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, 2009, 2010 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 ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
309 # sizeof(char) is 1 by definition.
310 AC_CHECK_SIZEOF(void *)
311 AC_CHECK_SIZEOF(short)
313 AC_CHECK_SIZEOF(long)
314 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
315 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
318 # ---------------------
319 # Warnings and checking
320 # ---------------------
322 # Check $CC warning features (if it's GCC).
323 # We want to use -pedantic, but we don't want warnings about
327 # So, we only use -pedantic if we can disable those warnings.
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
331 ACX_PROG_CC_WARNING_OPTS(
332 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
338 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
339 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
340 [-Wno-overlength-strings])), [strict_warn])
341 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
343 # The above macros do nothing if the compiler is not GCC. However, the
344 # Makefile has more goo to add other flags, so these variables are used
345 # to enable warnings only for GCC.
348 if test "x$GCC" = "xyes"; then
349 warn_cflags='$(GCC_WARN_CFLAGS)'
350 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
352 AC_SUBST(warn_cflags)
353 AC_SUBST(warn_cxxflags)
355 # Enable expensive internal checks
357 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
361 AC_ARG_ENABLE(checking,
362 [ --enable-checking[=LIST]
363 enable expensive run-time checks. With LIST,
364 enable only specific categories of checks.
365 Categories are: yes,no,all,none,release.
366 Flags are: assert,df,fold,gc,gcac,gimple,misc,
367 rtlflag,rtl,runtime,tree,valgrind,types.],
368 [ac_checking_flags="${enableval}"],[
369 # Determine the default checks.
370 if test x$is_release = x ; then
371 ac_checking_flags=yes
373 ac_checking_flags=release
375 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
376 for check in release $ac_checking_flags
379 # these set all the flags to specific states
380 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
381 ac_fold_checking= ; ac_gc_checking=1 ;
382 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
383 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
384 ac_tree_checking=1 ; ac_valgrind_checking= ;
385 ac_types_checking=1 ;;
386 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
387 ac_fold_checking= ; ac_gc_checking= ;
388 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
389 ac_rtlflag_checking= ; ac_runtime_checking= ;
390 ac_tree_checking= ; ac_valgrind_checking= ;
391 ac_types_checking= ;;
392 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
393 ac_fold_checking=1 ; ac_gc_checking=1 ;
394 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
395 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
396 ac_tree_checking=1 ; ac_valgrind_checking= ;
397 ac_types_checking=1 ;;
398 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
399 ac_fold_checking= ; ac_gc_checking= ;
400 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
401 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
402 ac_tree_checking= ; ac_valgrind_checking= ;
403 ac_types_checking= ;;
404 # these enable particular checks
405 assert) ac_assert_checking=1 ;;
406 df) ac_df_checking=1 ;;
407 fold) ac_fold_checking=1 ;;
408 gc) ac_gc_checking=1 ;;
409 gcac) ac_gc_always_collect=1 ;;
410 gimple) ac_gimple_checking=1 ;;
411 misc) ac_checking=1 ;;
412 rtl) ac_rtl_checking=1 ;;
413 rtlflag) ac_rtlflag_checking=1 ;;
414 runtime) ac_runtime_checking=1 ;;
415 tree) ac_tree_checking=1 ;;
416 types) ac_types_checking=1 ;;
417 valgrind) ac_valgrind_checking=1 ;;
418 *) AC_MSG_ERROR(unknown check category $check) ;;
424 if test x$ac_checking != x ; then
425 AC_DEFINE(ENABLE_CHECKING, 1,
426 [Define if you want more run-time sanity checks. This one gets a grab
427 bag of miscellaneous but relatively cheap checks.])
428 nocommon_flag=-fno-common
430 AC_SUBST(nocommon_flag)
431 if test x$ac_df_checking != x ; then
432 AC_DEFINE(ENABLE_DF_CHECKING, 1,
433 [Define if you want more run-time sanity checks for dataflow.])
435 if test x$ac_assert_checking != x ; then
436 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
437 [Define if you want assertions enabled. This is a cheap check.])
439 if test x$ac_gimple_checking != x ; then
440 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
441 [Define if you want operations on GIMPLE (the basic data structure of
442 the high-level optimizers) to be checked for dynamic type safety at
443 runtime. This is moderately expensive.])
445 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
446 if test x$ac_runtime_checking != x ; then
447 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
448 [Define if you want runtime assertions enabled. This is a cheap check.])
450 if test x$ac_tree_checking != x ; then
451 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
452 [Define if you want all operations on trees (the basic data
453 structure of the front ends) to be checked for dynamic type safety
454 at runtime. This is moderately expensive. The tree browser debugging
455 routines will also be enabled by this option.
457 TREEBROWSER=tree-browser.o
459 if test x$ac_types_checking != x ; then
460 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
461 [Define if you want all gimple types to be verified after gimplifiation.
465 AC_SUBST(TREEBROWSER)
466 if test x$ac_rtl_checking != x ; then
467 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
468 [Define if you want all operations on RTL (the basic data structure
469 of the optimizer and back end) to be checked for dynamic type safety
470 at runtime. This is quite expensive.])
472 if test x$ac_rtlflag_checking != x ; then
473 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
474 [Define if you want RTL flag accesses to be checked against the RTL
475 codes that are supported for each access macro. This is relatively
478 if test x$ac_gc_checking != x ; then
479 AC_DEFINE(ENABLE_GC_CHECKING, 1,
480 [Define if you want the garbage collector to do object poisoning and
481 other memory allocation checks. This is quite expensive.])
483 if test x$ac_gc_always_collect != x ; then
484 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
485 [Define if you want the garbage collector to operate in maximally
486 paranoid mode, validating the entire heap and collecting garbage at
487 every opportunity. This is extremely expensive.])
489 if test x$ac_fold_checking != x ; then
490 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
491 [Define if you want fold checked that it never destructs its argument.
492 This is quite expensive.])
494 valgrind_path_defines=
497 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
498 dnl # an if statement. This was the source of very frustrating bugs
499 dnl # in converting to autoconf 2.5x!
500 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
502 if test x$ac_valgrind_checking != x ; then
503 # It is certainly possible that there's valgrind but no valgrind.h.
504 # GCC relies on making annotations so we must have both.
505 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
506 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
507 [[#include <valgrind/memcheck.h>
508 #ifndef VALGRIND_DISCARD
509 #error VALGRIND_DISCARD not defined
511 [gcc_cv_header_valgrind_memcheck_h=yes],
512 [gcc_cv_header_valgrind_memcheck_h=no])
513 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
514 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
515 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
516 [[#include <memcheck.h>
517 #ifndef VALGRIND_DISCARD
518 #error VALGRIND_DISCARD not defined
520 [gcc_cv_header_memcheck_h=yes],
521 [gcc_cv_header_memcheck_h=no])
522 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
523 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
524 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
525 if test "x$valgrind_path" = "x" \
526 || (test $have_valgrind_h = no \
527 && test $gcc_cv_header_memcheck_h = no \
528 && test $gcc_cv_header_valgrind_memcheck_h = no); then
529 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
531 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
532 valgrind_command="$valgrind_path -q"
533 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
534 [Define if you want to run subprograms and generated programs
535 through valgrind (a memory checker). This is extremely expensive.])
536 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
537 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
538 [Define if valgrind's valgrind/memcheck.h header is installed.])
540 if test $gcc_cv_header_memcheck_h = yes; then
541 AC_DEFINE(HAVE_MEMCHECK_H, 1,
542 [Define if valgrind's memcheck.h header is installed.])
545 AC_SUBST(valgrind_path_defines)
546 AC_SUBST(valgrind_command)
548 # Enable code coverage collection
549 AC_ARG_ENABLE(coverage,
550 [ --enable-coverage[=LEVEL]
551 enable compiler's code coverage collection.
552 Use to measure compiler performance and locate
553 unused parts of the compiler. With LEVEL, specify
554 optimization. Values are opt, noopt,
556 [case "${enableval}" in
558 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
561 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
564 # a.k.a. --disable-coverage
568 AC_MSG_ERROR(unknown coverage setting $enableval)
572 AC_SUBST(coverage_flags)
574 AC_ARG_ENABLE(gather-detailed-mem-stats,
575 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
576 [enable_gather_detailed_mem_stats=no])
577 if test x$enable_gather_detailed_mem_stats = xyes ; then
578 AC_DEFINE(GATHER_STATISTICS, 1,
579 [Define to enable detailed memory allocation stats gathering.])
582 # -------------------------------
583 # Miscenalleous configure options
584 # -------------------------------
586 # See if we are building gcc with C++.
587 AC_ARG_ENABLE(build-with-cxx,
588 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
589 ENABLE_BUILD_WITH_CXX=$enableval,
590 ENABLE_BUILD_WITH_CXX=no)
591 AC_SUBST(ENABLE_BUILD_WITH_CXX)
592 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
593 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
594 [Define if building with C++.])
599 [ --with-stabs arrange to use stabs instead of host debug format],
603 # Determine whether or not multilibs are enabled.
604 AC_ARG_ENABLE(multilib,
605 [ --enable-multilib enable library support for multiple ABIs],
606 [], [enable_multilib=yes])
607 AC_SUBST(enable_multilib)
609 # Enable __cxa_atexit for C++.
610 AC_ARG_ENABLE(__cxa_atexit,
611 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
614 # Enable C extension for decimal float if target supports it.
615 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
617 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
618 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
619 [Define to 1 to enable decimal float extension to C.])
621 # Use default_decimal_float for dependency.
622 enable_decimal_float=$default_decimal_float
624 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
625 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
626 [Define to 1 to specify that we are using the BID decimal floating
627 point format instead of DPD])
629 # Enable C extension for fixed-point arithmetic.
630 AC_ARG_ENABLE(fixed-point,
631 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
639 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
640 enable_fixed_point=no
643 enable_fixed_point=yes
648 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
649 enable_fixed_point=no
653 AC_SUBST(enable_fixed_point)
655 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
656 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
657 [Define to 1 to enable fixed-point arithmetic extension to C.])
660 # Pass with no value to take the default
661 # Pass with a value to specify a thread package
662 AC_ARG_ENABLE(threads,
663 [ --enable-threads enable thread usage for target GCC
664 --enable-threads=LIB use LIB thread package for target GCC],,
668 [ --enable-tls enable or disable generation of tls code
669 overriding the assembler check for tls support],
673 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
674 Valid choices are 'yes' and 'no'.]) ;;
678 AC_ARG_ENABLE(objc-gc,
679 [ --enable-objc-gc enable the use of Boehm's garbage collector with
680 the GNU Objective-C runtime],
681 if test x$enable_objc_gc = xno; then
689 [ --with-dwarf2 force the default debug format to be DWARF 2],
690 dwarf2="$with_dwarf2",
693 AC_ARG_ENABLE(shared,
694 [ --disable-shared don't provide a shared libgcc],
696 case $enable_shared in
700 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
701 for pkg in $enableval; do
702 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
709 ], [enable_shared=yes])
710 AC_SUBST(enable_shared)
712 AC_ARG_WITH(build-sysroot,
713 [ --with-build-sysroot=sysroot
714 use sysroot as the system root during the build])
717 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
719 case ${with_sysroot} in
720 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
721 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
724 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
725 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
727 if test "x$prefix" = xNONE; then
728 test_prefix=/usr/local
732 if test "x$exec_prefix" = xNONE; then
733 test_exec_prefix=$test_prefix
735 test_exec_prefix=$exec_prefix
737 case ${TARGET_SYSTEM_ROOT} in
738 "${test_prefix}"|"${test_prefix}/"*|\
739 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
740 '${prefix}'|'${prefix}/'*|\
741 '${exec_prefix}'|'${exec_prefix}/'*)
742 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
743 TARGET_SYSTEM_ROOT_DEFINE="$t"
748 TARGET_SYSTEM_ROOT_DEFINE=
749 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
751 AC_SUBST(TARGET_SYSTEM_ROOT)
752 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
753 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
756 [AS_HELP_STRING([--with-specs=SPECS],
757 [add SPECS to driver command-line processing])],
758 [CONFIGURE_SPECS=$withval],
761 AC_SUBST(CONFIGURE_SPECS)
763 ACX_PKGVERSION([GCC])
764 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
766 # Sanity check enable_languages in case someone does not run the toplevel
767 # configure # script.
768 AC_ARG_ENABLE(languages,
769 [ --enable-languages=LIST specify which front-ends to build],
770 [case ,${enable_languages}, in
772 # go safe -- we cannot be much sure without the toplevel
774 # analysis of which target libs are present and usable
778 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
783 enable_languages=c,${enable_languages}
786 [enable_languages=c])
788 AC_ARG_WITH(multilib-list,
789 [ --with-multilib-list Select multilibs (SH only)],
791 with_multilib_list=default)
793 # -------------------------
794 # Checks for other programs
795 # -------------------------
799 # Find some useful tools
801 # We need awk to create options.c and options.h.
802 # Bail out if it's missing.
804 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
812 # By default, the Darwin ranlib will not treat common symbols as
813 # definitions when building the archive table of contents. Other
814 # ranlibs do that; pass an option to the Darwin ranlib that makes
815 # it behave similarly.
821 AC_SUBST(ranlib_flags)
825 # See if cmp has --ignore-initial.
826 gcc_AC_PROG_CMP_IGNORE_INITIAL
828 # See if we have the mktemp command.
829 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
831 # See if makeinfo has been installed and is modern enough
832 # that we can use it.
833 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
834 [GNU texinfo.* \([0-9][0-9.]*\)],
835 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
836 if test $gcc_cv_prog_makeinfo_modern = no; then
838 *** Makeinfo is missing or too old.
839 *** Info documentation will not be built.])
846 # Is pod2man recent enough to regenerate manpages?
847 AC_MSG_CHECKING([for recent Pod::Man])
848 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
850 GENERATED_MANPAGES=generated-manpages
855 AC_SUBST(GENERATED_MANPAGES)
857 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
860 dnl Don't use AC_PROG_LEX; we insist on flex.
861 dnl LEXLIB is not useful in gcc.
862 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
865 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
867 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
868 # check for build == host before using them.
871 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
872 && test -d ../binutils ; then
873 NM='${objdir}/../binutils/nm-new'
875 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
879 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
880 && test -d ../binutils ; then
881 AR='${objdir}/../binutils/ar'
883 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
887 # --------------------
888 # Checks for C headers
889 # --------------------
891 # Need to reject headers which give warnings, so that the -Werror bootstrap
892 # works later. *sigh* This needs to come before all header checks.
899 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
900 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
901 sys/resource.h sys/param.h sys/times.h sys/stat.h \
902 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
904 # Check for thread headers.
905 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
906 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
908 # These tests can't be done till we know if we have limits.h.
912 # ----------------------
913 # Checks for C++ headers
914 # ----------------------
918 AC_CHECK_HEADERS(unordered_map)
919 AC_CHECK_HEADERS(tr1/unordered_map)
920 AC_CHECK_HEADERS(ext/hash_map)
929 # These libraries may be used by collect2.
930 # We may need a special search path to get them linked.
931 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
933 for libs in '' -lld -lmld \
934 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
935 '-L/usr/lib/cmplrs/cc3.11 -lmld'
938 AC_TRY_LINK_FUNC(ldopen,
939 [gcc_cv_collect2_libs="$libs"; break])
942 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
943 case $gcc_cv_collect2_libs in
945 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
947 AC_SUBST(COLLECT2_LIBS)
949 # When building Ada code on Alpha, we need exc_resume which is usually in
950 # -lexc. So test for it.
953 AC_SEARCH_LIBS(exc_resume, exc)
956 AC_SUBST(GNAT_LIBEXC)
958 # Some systems put ldexp and frexp in libm instead of libc; assume
959 # they're both in the same place. jcf-dump needs them.
962 AC_SEARCH_LIBS(ldexp, m)
967 # Use <inttypes.h> only if it exists,
968 # doesn't clash with <sys/types.h>, and declares intmax_t.
969 AC_MSG_CHECKING(for inttypes.h)
970 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
971 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
972 [[#include <sys/types.h>
973 #include <inttypes.h>]],
974 [[intmax_t i = -1;]])],
975 [gcc_cv_header_inttypes_h=yes],
976 [gcc_cv_header_inttypes_h=no])])
977 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
978 if test $gcc_cv_header_inttypes_h = yes; then
979 AC_DEFINE(HAVE_INTTYPES_H, 1,
980 [Define if you have a working <inttypes.h> header file.])
983 dnl Disabled until we have a complete test for buggy enum bitfields.
984 dnl gcc_AC_C_ENUM_BF_UNSIGNED
986 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
987 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
988 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
989 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
990 putchar_unlocked putc_unlocked)
991 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
992 sysconf strsignal getrusage nl_langinfo \
993 gettimeofday mbstowcs wcswidth mmap setlocale \
996 if test x$ac_cv_func_mbstowcs = xyes; then
997 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
998 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1004 [gcc_cv_func_mbstowcs_works=yes],
1005 [gcc_cv_func_mbstowcs_works=no],
1006 [gcc_cv_func_mbstowcs_works=yes])])
1007 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1008 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1009 [Define this macro if mbstowcs does not crash when its
1010 first argument is NULL.])
1014 AC_CHECK_TYPE(ssize_t, int)
1015 AC_CHECK_TYPE(caddr_t, char *)
1017 gcc_AC_FUNC_MMAP_BLACKLIST
1021 # Under VMS, vfork works very differently than on Unix. The standard test
1022 # won't work, and it isn't easily adaptable. It makes more sense to
1024 ac_cv_func_vfork_works=yes
1030 # Until we have in-tree GNU iconv:
1032 AC_SUBST(LIBICONV_DEP)
1038 # We will need to find libiberty.h and ansidecl.h
1039 saved_CFLAGS="$CFLAGS"
1040 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1041 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1042 strsignal strstr strverscmp \
1043 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1044 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1045 #include "ansidecl.h"
1046 #include "system.h"])
1048 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1049 #include "ansidecl.h"
1051 #ifdef HAVE_SYS_RESOURCE_H
1052 #include <sys/resource.h>
1056 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1057 #include "ansidecl.h"
1059 #ifdef HAVE_SYS_RESOURCE_H
1060 #include <sys/resource.h>
1062 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1063 [Define to `long' if <sys/resource.h> doesn't define.])])
1065 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1066 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1067 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1068 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1069 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1070 #include "ansidecl.h"
1079 gcc_AC_CHECK_DECLS(times, , ,[
1080 #include "ansidecl.h"
1082 #ifdef HAVE_SYS_TIMES_H
1083 #include <sys/times.h>
1087 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1088 #include "ansidecl.h"
1093 # More time-related stuff.
1094 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1095 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1096 #include "ansidecl.h"
1098 #ifdef HAVE_SYS_TIMES_H
1099 #include <sys/times.h>
1101 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1102 if test $ac_cv_struct_tms = yes; then
1103 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1104 [Define if <sys/times.h> defines struct tms.])
1107 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1108 # revisit after autoconf 2.50.
1109 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1110 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1111 #include "ansidecl.h"
1113 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1114 if test $gcc_cv_type_clock_t = yes; then
1115 AC_DEFINE(HAVE_CLOCK_T, 1,
1116 [Define if <time.h> defines clock_t.])
1119 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1120 CFLAGS="$saved_CFLAGS"
1122 gcc_AC_INITFINI_ARRAY
1124 # mkdir takes a single argument on some systems.
1125 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1133 # With Setjmp/Longjmp based exception handling.
1134 AC_ARG_ENABLE(sjlj-exceptions,
1135 [ --enable-sjlj-exceptions
1136 arrange to use setjmp/longjmp exception handling],
1139 if test $enableval != yes; then
1140 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1145 force_sjlj_exceptions=yes],
1148 force_sjlj_exceptions=yes
1152 force_sjlj_exceptions=no
1155 if test $force_sjlj_exceptions = yes; then
1156 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1157 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1158 [Define 0/1 to force the choice for exception handling model.])
1161 # For platforms with the unwind ABI which includes an unwind library,
1162 # libunwind, we can choose to use the system libunwind.
1163 # config.gcc also contains tests of with_system_libunwind.
1164 GCC_CHECK_UNWIND_GETIPINFO
1166 # --------------------------------------------------------
1167 # Build, host, and target specific configuration fragments
1168 # --------------------------------------------------------
1170 # Collect build-machine-specific information.
1171 . ${srcdir}/config.build
1173 # Collect host-machine-specific information.
1174 . ${srcdir}/config.host
1178 # Collect target-machine-specific information.
1179 . ${srcdir}/config.gcc
1181 extra_objs="${host_extra_objs} ${extra_objs}"
1182 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1184 # Default the target-machine variables that were not explicitly set.
1185 if test x"$tm_file" = x
1186 then tm_file=$cpu_type/$cpu_type.h; fi
1188 if test x"$extra_headers" = x
1189 then extra_headers=; fi
1191 if test x$md_file = x
1192 then md_file=$cpu_type/$cpu_type.md; fi
1194 if test x$out_file = x
1195 then out_file=$cpu_type/$cpu_type.c; fi
1197 if test x"$tmake_file" = x
1198 then tmake_file=$cpu_type/t-$cpu_type
1201 if test x"$dwarf2" = xyes
1202 then tm_file="$tm_file tm-dwarf2.h"
1205 # Say what files are being used for the output code and MD file.
1206 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1207 echo "Using \`$srcdir/config/$md_file' as machine description file."
1209 # If any of the xm_file variables contain nonexistent files, warn
1210 # about them and drop them.
1213 for x in $build_xm_file; do
1214 if test -f $srcdir/config/$x
1216 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1222 for x in $host_xm_file; do
1223 if test -f $srcdir/config/$x
1225 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1231 for x in $xm_file; do
1232 if test -f $srcdir/config/$x
1234 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1240 for f in $tm_file; do
1243 if test $count = ax; then
1244 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1246 echo "Using the following target machine macro files:"
1247 for f in $tm_file; do
1248 echo " $srcdir/config/$f"
1252 if test x$need_64bit_hwint = xyes; then
1253 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1254 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1257 if test x$use_long_long_for_widest_fast_int = xyes; then
1258 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1259 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1260 efficiently supported by the host hardware.])
1264 for f in $host_xm_file; do
1267 if test $count = a; then
1269 elif test $count = ax; then
1270 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1272 echo "Using the following host machine macro files:"
1273 for f in $host_xm_file; do
1274 echo " $srcdir/config/$f"
1277 echo "Using ${out_host_hook_obj} for host machine hooks."
1279 if test "$host_xm_file" != "$build_xm_file"; then
1281 for f in $build_xm_file; do
1284 if test $count = a; then
1286 elif test $count = ax; then
1287 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1289 echo "Using the following build machine macro files:"
1290 for f in $build_xm_file; do
1291 echo " $srcdir/config/$f"
1298 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1299 gcc_cv_mcontext_underscores,
1301 #include <sys/cdefs.h>
1302 #include <sys/signal.h>
1303 #include <ucontext.h>
1304 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1306 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1307 if test $gcc_cv_mcontext_underscores = yes; then
1308 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1309 [mcontext_t fields start with __])
1318 # Check if a valid thread package
1319 case ${enable_threads} in
1322 target_thread_file='single'
1326 target_thread_file='single'
1328 aix | dce | gnat | irix | posix | posix95 | rtems | \
1329 single | solaris | vxworks | win32 | mipssde)
1330 target_thread_file=${enable_threads}
1333 echo "${enable_threads} is an unknown thread package" 1>&2
1338 if test x${thread_file} = x; then
1339 # No thread file set by target-specific clauses in config.gcc,
1340 # so use file chosen by default logic above
1341 thread_file=${target_thread_file}
1344 # Make gthr-default.h if we have a thread file.
1346 if test $thread_file != single; then
1347 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1348 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1349 rm -f gthr-default.h-t
1351 mv -f gthr-default.h-t gthr-default.h
1353 gthread_flags=-DHAVE_GTHR_DEFAULT
1355 AC_SUBST(gthread_flags)
1362 if test x$enable___cxa_atexit = xyes || \
1363 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1364 if test x$host = x$target; then
1366 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1367 # keyed to flag_use_cxa_atexit
1372 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1373 [echo "__cxa_atexit can't be enabled on this target"])
1377 # We can't check for __cxa_atexit when building a cross, so assume
1381 if test x$use_cxa_atexit = xyes; then
1382 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1383 [Define if you want to use __cxa_atexit, rather than atexit, to
1384 register C++ destructors for local statics and global objects.
1385 This is essential for fully standards-compliant handling of
1386 destructors, but requires __cxa_atexit in libc.])
1390 # Look for a file containing extra machine modes.
1391 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1392 extra_modes_file='$(srcdir)'/config/${extra_modes}
1393 AC_SUBST(extra_modes_file)
1394 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1395 [Define to the name of a file containing a list of extra machine modes
1396 for this architecture.])
1399 # Convert extra_options into a form suitable for Makefile use.
1402 for f in $extra_options; do
1403 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1404 all_opt_files="$all_opt_files $srcdir/config/$f"
1406 AC_SUBST(extra_opt_files)
1408 # auto-host.h is the file containing items generated by autoconf and is
1409 # the first file included by config.h.
1410 # If host=build, it is correct to have bconfig include auto-host.h
1411 # as well. If host!=build, we are in error and need to do more
1412 # work to find out the build config parameters.
1413 if test x$host = x$build
1415 build_auto=auto-host.h
1417 # We create a subdir, then run autoconf in the subdir.
1418 # To prevent recursion we set host and build for the new
1419 # invocation of configure to the build for this invocation
1426 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1427 *) realsrcdir=../${srcdir};;
1429 saved_CFLAGS="${CFLAGS}"
1430 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1431 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1432 ${realsrcdir}/configure \
1433 --enable-languages=${enable_languages-all} \
1434 --target=$target_alias --host=$build_alias --build=$build_alias
1435 CFLAGS="${saved_CFLAGS}"
1437 # We just finished tests for the build machine, so rename
1438 # the file auto-build.h in the gcc directory.
1439 mv auto-host.h ../auto-build.h
1442 build_auto=auto-build.h
1444 AC_SUBST(build_subdir)
1446 tm_file="${tm_file} defaults.h"
1447 tm_p_file="${tm_p_file} tm-preds.h"
1448 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1449 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1450 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1451 # put this back in temporarily.
1452 xm_file="auto-host.h ansidecl.h ${xm_file}"
1459 # Compile in configure arguments.
1460 if test -f configargs.h ; then
1461 # Being re-configured.
1462 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1463 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1465 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1468 # Double all backslashes and backslash all quotes to turn
1469 # gcc_config_arguments into a C string.
1470 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1471 $gcc_config_arguments
1473 gcc_config_arguments_str=`cat conftest.out`
1476 cat > configargs.h <<EOF
1477 /* Generated automatically. */
1478 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1479 static const char thread_model[] = "$thread_file";
1481 static const struct {
1482 const char *name, *value;
1483 } configure_default_options[] = $configure_default_options;
1488 gcc_BASEVER=`cat $srcdir/BASE-VER`
1489 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1490 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1491 if test -f $srcdir/REVISION ; then
1492 gcc_REVISION=`cat $srcdir/REVISION`
1496 cat > plugin-version.h <<EOF
1497 #include "configargs.h"
1499 static char basever[] = "$gcc_BASEVER";
1500 static char datestamp[] = "$gcc_DATESTAMP";
1501 static char devphase[] = "$gcc_DEVPHASE";
1502 static char revision[] = "$gcc_REVISION";
1504 /* FIXME plugins: We should make the version information more precise.
1505 One way to do is to add a checksum. */
1507 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1509 configuration_arguments};
1513 # Internationalization
1514 ZW_GNU_GETTEXT_SISTER_DIR
1516 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1517 # -liconv on the link line twice.
1518 case "$LIBINTL" in *$LIBICONV*)
1522 AC_ARG_ENABLE(secureplt,
1523 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1526 AC_ARG_ENABLE(leading-mingw64-underscores,
1527 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1528 [Enable leading underscores on 64 bit mingw targets]),
1530 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1531 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1532 [Define if we should use leading underscore on 64 bit mingw targets])])
1535 [ --enable-cld enable -mcld by default for 32bit x86], [],
1538 AC_ARG_ENABLE(frame-pointer,
1539 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1542 linux* | darwin[[8912]]*)
1543 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1545 enable_frame_pointer=no
1548 enable_frame_pointer=yes
1553 # Windows32 Registry support for specifying GCC installation paths.
1554 AC_ARG_ENABLE(win32-registry,
1555 [ --disable-win32-registry
1556 disable lookup of installation paths in the
1557 Registry on Windows hosts
1558 --enable-win32-registry enable registry lookup (default)
1559 --enable-win32-registry=KEY
1560 use KEY instead of GCC version as the last portion
1561 of the registry key],,)
1564 win32 | pe | cygwin* | mingw32* | uwin*)
1565 if test "x$enable_win32_registry" != xno; then
1566 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1569 if test "x$enable_win32_registry" != xno; then
1570 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1571 [Define to 1 if installation paths should be looked up in the Windows
1572 Registry. Ignored on non-Windows hosts.])
1574 if test "x$enable_win32_registry" != xyes \
1575 && test "x$enable_win32_registry" != x; then
1576 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1577 [Define to be the last component of the Windows registry key under which
1578 to look for installation paths. The full key used will be
1579 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1580 The default is the GCC version number.])
1586 # Get an absolute path to the GCC top-level source directory
1587 holddir=`${PWDCMD-pwd}`
1589 topdir=`${PWDCMD-pwd}`
1592 # Conditionalize the makefile for this host machine.
1594 for f in ${host_xmake_file}
1596 if test -f ${srcdir}/config/$f
1598 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1602 # Conditionalize the makefile for this target machine.
1604 for f in ${tmake_file}
1606 if test -f ${srcdir}/config/$f
1608 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1611 tmake_file="${tmake_file_}"
1613 out_object_file=`basename $out_file .c`.o
1615 tm_file_list="options.h"
1616 tm_include_list="options.h insn-constants.h"
1617 for f in $tm_file; do
1620 f=`echo $f | sed 's/^..//'`
1621 tm_file_list="${tm_file_list} $f"
1622 tm_include_list="${tm_include_list} $f"
1625 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1626 tm_include_list="${tm_include_list} $f"
1629 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1630 tm_include_list="${tm_include_list} config/$f"
1637 for f in $tm_p_file; do
1640 tm_p_file_list="${tm_p_file_list} $f"
1641 tm_p_include_list="${tm_p_include_list} $f"
1644 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1645 tm_p_include_list="${tm_p_include_list} config/$f"
1651 for f in $xm_file; do
1654 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1655 xm_include_list="${xm_include_list} $f"
1658 xm_file_list="${xm_file_list} $f"
1659 xm_include_list="${xm_include_list} $f"
1662 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1663 xm_include_list="${xm_include_list} config/$f"
1669 host_xm_include_list=
1670 for f in $host_xm_file; do
1673 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1674 host_xm_include_list="${host_xm_include_list} $f"
1677 host_xm_file_list="${host_xm_file_list} $f"
1678 host_xm_include_list="${host_xm_include_list} $f"
1681 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1682 host_xm_include_list="${host_xm_include_list} config/$f"
1688 for f in $build_xm_file; do
1691 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1692 build_xm_include_list="${build_xm_include_list} $f"
1694 auto-build.h | auto-host.h )
1695 build_xm_file_list="${build_xm_file_list} $f"
1696 build_xm_include_list="${build_xm_include_list} $f"
1699 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1700 build_xm_include_list="${build_xm_include_list} config/$f"
1705 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1706 # cross-compiler which does not use the native headers and libraries.
1707 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1708 CROSS= AC_SUBST(CROSS)
1709 ALL=all.internal AC_SUBST(ALL)
1710 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1712 if test "x$with_build_sysroot" != x; then
1713 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1715 # This value is used, even on a native system, because
1716 # CROSS_SYSTEM_HEADER_DIR is just
1717 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1718 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1721 if test x$host != x$target
1723 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1725 SYSTEM_HEADER_DIR=$build_system_header_dir
1726 case "$host","$target" in
1727 # Darwin crosses can use the host system's libraries and headers,
1728 # because of the fat library support. Of course, it must be the
1729 # same version of Darwin on both sides. Allow the user to
1730 # just say --target=foo-darwin without a version number to mean
1731 # "the version on this system".
1732 *-*-darwin*,*-*-darwin*)
1733 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1734 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1735 if test $hostos = $targetos -o $targetos = darwin ; then
1737 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1742 i?86-*-*,x86_64-*-* \
1743 | powerpc*-*-*,powerpc64*-*-*)
1744 CROSS="$CROSS -DNATIVE_CROSS" ;;
1749 if test "x$with_headers" = x; then
1756 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1757 SYSTEM_HEADER_DIR=$build_system_header_dir
1760 # If this is a cross-compiler that does not
1761 # have its own set of headers then define
1764 # If this is using newlib, without having the headers available now,
1765 # then define inhibit_libc in LIBGCC2_CFLAGS.
1766 # This prevents libgcc2 from containing any code which requires libc
1768 : ${inhibit_libc=false}
1769 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1770 test x$with_newlib = xyes ; } &&
1771 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1774 AC_SUBST(inhibit_libc)
1776 # When building gcc with a cross-compiler, we need to adjust things so
1777 # that the generator programs are still built with the native compiler.
1778 # Also, we cannot run fixincludes.
1780 # These are the normal (build=host) settings:
1781 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1782 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1783 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1784 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1786 # And these apply if build != host, or we are generating coverage data
1787 if test x$build != x$host || test "x$coverage_flags" != x
1789 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1790 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1793 # Expand extra_headers to include complete path.
1794 # This substitutes for lots of t-* files.
1796 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1797 for file in ${extra_headers} ; do
1798 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1801 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1802 if test x"$use_gcc_tgmath" = xyes
1803 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1806 # Define collect2 in Makefile.
1807 case $host_can_use_collect2 in
1809 *) collect2='collect2$(exeext)' ;;
1811 AC_SUBST([collect2])
1813 # Add a definition of USE_COLLECT2 if system wants one.
1814 case $use_collect2 in
1815 no) use_collect2= ;;
1818 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1819 xm_defines="${xm_defines} USE_COLLECT2"
1820 case $host_can_use_collect2 in
1822 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1828 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1829 [Define to the name of the LTO plugin DSO that must be
1830 passed to the linker's -plugin=LIB option.])
1832 # ---------------------------
1833 # Assembler & linker features
1834 # ---------------------------
1836 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1837 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1838 # However when ld-new is first executed from the build tree, libtool will
1839 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1840 # to the build tree. While doing this we need to use the previous-stage
1841 # linker, or we have an infinite loop. The presence of a shell script as
1842 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1843 # the gcc/collect-ld script. So we need to know how libtool works, or
1844 # exec-tool will fail.
1846 m4_defun([_LT_CONFIG_COMMANDS], [])
1849 AC_SUBST(enable_fast_install)
1851 # Identify the assembler which will work hand-in-glove with the newly
1852 # built GCC, so that we can examine its features. This is the assembler
1853 # which will be driven by the driver program.
1855 # If build != host, and we aren't building gas in-tree, we identify a
1856 # build->target assembler and hope that it will have the same features
1857 # as the host->target assembler we'll be using.
1858 gcc_cv_gas_major_version=
1859 gcc_cv_gas_minor_version=
1860 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1862 m4_pattern_allow([AS_FOR_TARGET])dnl
1863 AS_VAR_SET_IF(gcc_cv_as,, [
1864 if test -x "$DEFAULT_ASSEMBLER"; then
1865 gcc_cv_as="$DEFAULT_ASSEMBLER"
1866 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1867 && test -f ../gas/Makefile \
1868 && test x$build = x$host; then
1869 gcc_cv_as=../gas/as-new$build_exeext
1870 elif test -x as$build_exeext; then
1871 # Build using assembler in the current directory.
1872 gcc_cv_as=./as$build_exeext
1873 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1874 gcc_cv_as="$AS_FOR_TARGET"
1876 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1879 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1880 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1881 case "$ORIGINAL_AS_FOR_TARGET" in
1882 ./as | ./as$build_exeext) ;;
1883 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1886 AC_MSG_CHECKING(what assembler to use)
1887 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1888 # Single tree build which includes gas. We want to prefer it
1889 # over whatever linker top-level may have detected, since
1890 # we'll use what we're building after installation anyway.
1891 AC_MSG_RESULT(newly built gas)
1893 _gcc_COMPUTE_GAS_VERSION
1894 in_tree_gas_is_elf=no
1895 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1896 || (grep 'obj_format = multi' ../gas/Makefile \
1897 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1899 in_tree_gas_is_elf=yes
1902 AC_MSG_RESULT($gcc_cv_as)
1906 # Identify the linker which will work hand-in-glove with the newly
1907 # built GCC, so that we can examine its features. This is the linker
1908 # which will be driven by the driver program.
1910 # If build != host, and we aren't building gas in-tree, we identify a
1911 # build->target linker and hope that it will have the same features
1912 # as the host->target linker we'll be using.
1913 gcc_cv_gld_major_version=
1914 gcc_cv_gld_minor_version=
1915 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1916 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1918 AS_VAR_SET_IF(gcc_cv_ld,, [
1919 if test -x "$DEFAULT_LINKER"; then
1920 gcc_cv_ld="$DEFAULT_LINKER"
1921 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1922 && test -f ../ld/Makefile \
1923 && test x$build = x$host; then
1924 gcc_cv_ld=../ld/ld-new$build_exeext
1925 elif test -x collect-ld$build_exeext; then
1926 # Build using linker in the current directory.
1927 gcc_cv_ld=./collect-ld$build_exeext
1928 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1929 gcc_cv_ld="$LD_FOR_TARGET"
1931 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1934 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1935 PLUGIN_LD=`basename $gcc_cv_ld`
1936 AC_ARG_WITH(plugin-ld,
1937 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1938 [if test x"$withval" != x; then
1939 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1940 PLUGIN_LD="$withval"
1942 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1943 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1945 # Check to see if we are using gold instead of ld
1946 AC_MSG_CHECKING(whether we are using gold)
1948 if test x$gcc_cv_ld != x; then
1949 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1950 | grep "GNU gold" > /dev/null; then
1954 AC_MSG_RESULT($ld_is_gold)
1956 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1957 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1958 case "$ORIGINAL_LD_FOR_TARGET" in
1959 ./collect-ld | ./collect-ld$build_exeext) ;;
1960 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1963 AC_MSG_CHECKING(what linker to use)
1964 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1965 # Single tree build which includes ld. We want to prefer it
1966 # over whatever linker top-level may have detected, since
1967 # we'll use what we're building after installation anyway.
1968 AC_MSG_RESULT(newly built ld)
1970 in_tree_ld_is_elf=no
1971 if (grep 'EMUL = .*elf' ../ld/Makefile \
1972 || grep 'EMUL = .*linux' ../ld/Makefile \
1973 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1974 in_tree_ld_is_elf=yes
1976 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
1979 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1980 if test x$gcc_cv_gld_version != x; then
1984 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1985 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1988 AC_MSG_RESULT($gcc_cv_ld)
1992 # Figure out what nm we will be using.
1993 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1994 AS_VAR_SET_IF(gcc_cv_nm,, [
1995 if test -f $gcc_cv_binutils_srcdir/configure.in \
1996 && test -f ../binutils/Makefile \
1997 && test x$build = x$host; then
1998 gcc_cv_nm=../binutils/nm-new$build_exeext
1999 elif test -x nm$build_exeext; then
2000 gcc_cv_nm=./nm$build_exeext
2001 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2002 gcc_cv_nm="$NM_FOR_TARGET"
2004 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2007 AC_MSG_CHECKING(what nm to use)
2008 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2009 # Single tree build which includes binutils.
2010 AC_MSG_RESULT(newly built nm)
2013 AC_MSG_RESULT($gcc_cv_nm)
2017 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2018 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2019 case "$ORIGINAL_NM_FOR_TARGET" in
2020 ./nm | ./nm$build_exeext) ;;
2021 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2025 # Figure out what objdump we will be using.
2026 AS_VAR_SET_IF(gcc_cv_objdump,, [
2027 if test -f $gcc_cv_binutils_srcdir/configure.in \
2028 && test -f ../binutils/Makefile \
2029 && test x$build = x$host; then
2030 # Single tree build which includes binutils.
2031 gcc_cv_objdump=../binutils/objdump$build_exeext
2032 elif test -x objdump$build_exeext; then
2033 gcc_cv_objdump=./objdump$build_exeext
2034 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2035 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2037 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2040 AC_MSG_CHECKING(what objdump to use)
2041 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2042 # Single tree build which includes binutils.
2043 AC_MSG_RESULT(newly built objdump)
2044 elif test x$gcc_cv_objdump = x; then
2045 AC_MSG_RESULT(not found)
2047 AC_MSG_RESULT($gcc_cv_objdump)
2050 # Figure out what readelf we will be using.
2051 AS_VAR_SET_IF(gcc_cv_readelf,, [
2052 if test -f $gcc_cv_binutils_srcdir/configure.in \
2053 && test -f ../binutils/Makefile \
2054 && test x$build = x$host; then
2055 # Single tree build which includes binutils.
2056 gcc_cv_readelf=../binutils/readelf$build_exeext
2057 elif test -x readelf$build_exeext; then
2058 gcc_cv_readelf=./readelf$build_exeext
2060 AC_PATH_PROG(gcc_cv_readelf, readelf)
2063 AC_MSG_CHECKING(what readelf to use)
2064 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2065 # Single tree build which includes binutils.
2066 AC_MSG_RESULT(newly built readelf)
2067 elif test x$gcc_cv_readelf = x; then
2068 AC_MSG_RESULT(not found)
2070 AC_MSG_RESULT($gcc_cv_readelf)
2073 # Figure out what assembler alignment features are present.
2074 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2078 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2079 [Define if your assembler supports .balign and .p2align.])])
2081 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2084 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2085 [Define if your assembler supports specifying the maximum number
2086 of bytes to skip when using the GAS .p2align command.])])
2088 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2091 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2092 [Define if your assembler supports .literal16.])])
2094 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2096 [conftest_label1: .word 0
2098 conftest_label2: .word 0
2100 [if test x$gcc_cv_nm != x; then
2101 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2102 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2103 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2105 else gcc_cv_as_subsection_m1=yes
2107 rm -f conftest.nm1 conftest.nm2
2109 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2110 [Define if your assembler supports .subsection and .subsection -1 starts
2111 emitting at the beginning of your section.])])
2113 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2116 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2118 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2120 [ .weakref foobar, barfnot],,
2121 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2123 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2126 .NSUBSPA $CODE$,COMDAT],,
2127 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2129 # .hidden needs to be supported in both the assembler and the linker,
2130 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2131 # This is irritatingly difficult to feature test for; we have to check the
2132 # date string after the version number. If we've got an in-tree
2133 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2135 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2136 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2140 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2141 # STV_HIDDEN, so disable .hidden support if so.
2144 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2145 cat > conftest.s <<EOF
2152 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2153 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2154 grep '\.hidden default' > /dev/null; then
2157 gcc_cv_as_hidden=yes
2160 # Assume bug is present if objdump is missing.
2165 gcc_cv_as_hidden=yes
2169 # gnu_indirect_function type is an extension proposed at
2170 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2171 # selection of function implementation
2172 AC_ARG_ENABLE(gnu-indirect-function,
2173 [AS_HELP_STRING([--enable-gnu-indirect-function],
2174 [enable the use of the @gnu_indirect_function to glibc systems])],
2175 [case $enable_gnu_indirect_function in
2177 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2178 Valid choices are 'yes' and 'no'.]) ;;
2180 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2181 if test x$enable_gnu_indirect_function = xyes; then
2182 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2183 [Define if your system supports gnu indirect functions.])
2187 if test $in_tree_ld != yes ; then
2188 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2189 if test x"$ld_is_gold" = xyes; then
2190 gcc_cv_ld_hidden=yes
2191 elif echo "$ld_ver" | grep GNU > /dev/null; then
2192 ld_vers=`echo $ld_ver | sed -n \
2193 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2194 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2195 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2196 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2197 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2202 # Solaris 2 ld -V output looks like this for a regular version:
2204 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2206 # but test versions add stuff at the end:
2208 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2210 ld_ver=`$gcc_cv_ld -V 2>&1`
2211 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2212 ld_vers=`echo $ld_ver | sed -n \
2213 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2214 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2215 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2223 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2224 [[if test $in_tree_ld = yes ; then
2226 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2227 && test $in_tree_ld_is_elf = yes; then
2228 gcc_cv_ld_hidden=yes
2231 gcc_cv_ld_hidden=yes
2232 if echo "$ld_ver" | grep GNU > /dev/null; then
2233 if test 0"$ld_date" -lt 20020404; then
2234 if test -n "$ld_date"; then
2235 # If there was date string, but was earlier than 2002-04-04, fail
2237 elif test -z "$ld_vers"; then
2238 # If there was no date string nor ld version number, something is wrong
2241 test -z "$ld_vers_patch" && ld_vers_patch=0
2242 if test "$ld_vers_major" -lt 2; then
2244 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2245 gcc_cv_ld_hidden="no"
2246 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2253 hppa64*-*-hpux* | ia64*-*-hpux*)
2254 gcc_cv_ld_hidden=yes
2257 # .hidden support was backported to Solaris 8, starting with ld
2259 if test "$ld_vers_minor" -ge 276; then
2260 gcc_cv_ld_hidden=yes
2265 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2266 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2267 # .symbolic was only added in Solaris 9 12/02.
2268 gcc_cv_ld_hidden=yes
2276 libgcc_visibility=no
2277 AC_SUBST(libgcc_visibility)
2278 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2279 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2280 libgcc_visibility=yes
2281 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2282 [Define if your assembler and linker support .hidden.])
2285 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2286 gcc_cv_ld_ro_rw_mix=unknown
2287 if test $in_tree_ld = yes ; then
2288 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2289 && test $in_tree_ld_is_elf = yes; then
2290 gcc_cv_ld_ro_rw_mix=read-write
2292 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2293 echo '.section myfoosect, "a"' > conftest1.s
2294 echo '.section myfoosect, "aw"' > conftest2.s
2295 echo '.byte 1' >> conftest2.s
2296 echo '.section myfoosect, "a"' > conftest3.s
2297 echo '.byte 0' >> conftest3.s
2298 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2299 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2300 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2301 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2302 conftest2.o conftest3.o > /dev/null 2>&1; then
2303 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2304 | sed -e '/myfoosect/!d' -e N`
2305 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2306 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2307 gcc_cv_ld_ro_rw_mix=read-only
2309 gcc_cv_ld_ro_rw_mix=read-write
2314 rm -f conftest.* conftest[123].*
2317 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2318 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2319 [Define if your linker links a mix of read-only
2320 and read-write sections into a read-write section.])
2322 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2324 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2325 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2333 [[# GAS versions before 2.11 do not support uleb128,
2334 # despite appearing to.
2335 # ??? There exists an elf-specific test that will crash
2336 # the assembler. Perhaps it's better to figure out whether
2337 # arbitrary sections are supported and try the test.
2338 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2339 if echo "$as_ver" | grep GNU > /dev/null; then
2340 as_vers=`echo $as_ver | sed -n \
2341 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2342 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2343 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2344 if test $as_major -eq 2 && test $as_minor -lt 11
2346 else gcc_cv_as_leb128=yes
2349 [AC_DEFINE(HAVE_AS_LEB128, 1,
2350 [Define if your assembler supports .sleb128 and .uleb128.])])
2352 # Check if we have assembler support for unwind directives.
2353 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2360 .cfi_escape 1, 2, 3, 4, 5
2364 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2365 # read-only and read-write sections, we need to make sure that the
2366 # assembler used emits read-write .eh_frame sections.
2367 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2368 if test "x$gcc_cv_objdump" != x; then
2369 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2370 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2371 gcc_cv_as_cfi_directive=no
2374 i?86-*-solaris2.1[[0-9]]*)
2375 # On Solaris/x86, make sure that GCC and gas agree on using
2376 # read-only .eh_frame sections for 64-bit.
2377 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2378 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2379 sed -e /.eh_frame/!d -e N | \
2380 grep READONLY > /dev/null; then
2381 gcc_cv_as_cfi_directive=yes
2383 gcc_cv_as_cfi_directive=no
2387 gcc_cv_as_cfi_directive=yes
2392 # no objdump, err on the side of caution
2393 gcc_cv_as_cfi_directive=no
2396 gcc_cv_as_cfi_directive=yes
2400 gcc_cv_as_cfi_directive=yes
2403 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2404 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2408 .cfi_adjust_cfa_offset 64
2410 .cfi_adjust_cfa_offset 128
2413 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2414 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2415 gcc_cv_as_cfi_advance_working=yes
2419 # no objdump, err on the side of caution
2420 gcc_cv_as_cfi_advance_working=no
2422 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2423 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2424 [`if test $gcc_cv_as_cfi_directive = yes \
2425 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2426 [Define 0/1 if your assembler supports CFI directives.])
2428 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2429 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2430 gcc_cv_as_cfi_personality_directive, ,,
2433 .cfi_personality 0, symbol
2435 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2436 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2437 then echo 1; else echo 0; fi`],
2438 [Define 0/1 if your assembler supports .cfi_personality.])
2440 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2441 gcc_cv_as_cfi_sections_directive, ,,
2443 .cfi_sections .debug_frame, .eh_frame
2447 win32 | pe | cygwin* | mingw32* | uwin*)
2448 # Need to check that we generated the correct relocation for the
2449 # .debug_frame section. This was fixed for binutils 2.21.
2450 gcc_cv_as_cfi_sections_directive=no
2451 if test "x$gcc_cv_objdump" != x; then
2452 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2453 grep secrel > /dev/null; then
2454 gcc_cv_as_cfi_sections_directive=yes
2459 gcc_cv_as_cfi_sections_directive=yes
2462 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2463 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2464 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2465 then echo 1; else echo 0; fi`],
2466 [Define 0/1 if your assembler supports .cfi_sections.])
2468 # GAS versions up to and including 2.11.0 may mis-optimize
2470 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2478 .section .eh_frame,"aw",@progbits
2480 .4byte .LECIE1-.LSCIE1
2494 .4byte .LEFDE1-.LASFDE1
2496 .4byte .LASFDE1-__FRAME_BEGIN__
2504 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2505 cat > conftest.lit <<EOF
2506 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2507 0010 01000000 12000000 18000000 00000000 ................
2508 0020 08000000 04080000 0044 .........D @&t@
2510 cat > conftest.big <<EOF
2511 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2512 0010 00000001 00000012 00000018 00000000 ................
2513 0020 00000008 04000000 0844 .........D @&t@
2515 # If the assembler didn't choke, and we can objdump,
2516 # and we got the correct data, then succeed.
2517 # The text in the here-document typically retains its unix-style line
2518 # endings, while the output of objdump will use host line endings.
2519 # Therefore, use diff -b for the comparisons.
2520 if test x$gcc_cv_objdump != x \
2521 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2522 | tail -3 > conftest.got \
2523 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2524 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2526 gcc_cv_as_eh_frame=yes
2527 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2528 gcc_cv_as_eh_frame=buggy
2530 # Uh oh, what do we do now?
2531 gcc_cv_as_eh_frame=no
2534 if test $gcc_cv_as_eh_frame = buggy; then
2535 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2536 [Define if your assembler mis-optimizes .eh_frame data.])
2539 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2540 [elf,2,12,0], [--fatal-warnings],
2541 [.section .rodata.str, "aMS", @progbits, 1])
2542 if test $gcc_cv_as_shf_merge = no; then
2543 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2544 [elf,2,12,0], [--fatal-warnings],
2545 [.section .rodata.str, "aMS", %progbits, 1])
2547 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2548 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2549 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2551 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2552 [elf,2,16,0], [--fatal-warnings],
2553 [.section .text,"axG",@progbits,.foo,comdat])
2554 if test $gcc_cv_as_comdat_group = yes; then
2555 gcc_cv_as_comdat_group_percent=no
2557 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2558 [elf,2,16,0], [--fatal-warnings],
2559 [.section .text,"axG",%progbits,.foo,comdat])
2561 if test x"$ld_is_gold" = xyes; then
2563 elif test $in_tree_ld = yes ; then
2565 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2566 && test $in_tree_ld_is_elf = yes; then
2569 elif echo "$ld_ver" | grep GNU > /dev/null; then
2571 if test 0"$ld_date" -lt 20050308; then
2572 if test -n "$ld_date"; then
2573 # If there was date string, but was earlier than 2005-03-08, fail
2575 elif test "$ld_vers_major" -lt 2; then
2577 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2584 *-*-solaris2.1[1-9]*)
2585 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2586 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2589 # FIXME: Maybe need to refine later when COMDAT group support with
2590 # Sun as is implemented.
2591 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2598 # Assume linkers other than GNU ld don't support COMDAT group.
2604 # Allow overriding the automatic COMDAT group tests above.
2605 AC_ARG_ENABLE(comdat,
2606 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2607 [comdat_group="$enable_comdat"])
2608 if test $comdat_group = no; then
2609 gcc_cv_as_comdat_group=no
2610 gcc_cv_as_comdat_group_percent=no
2612 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2613 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2614 [Define 0/1 if your assembler and linker support COMDAT groups.])
2616 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2617 gcc_cv_as_discriminator,
2621 .loc 1 1 0 discriminator 1],,
2622 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2623 [Define if your assembler supports the .loc discriminator sub-directive.])])
2625 # Thread-local storage - the check is heavily parameterized.
2634 .section ".tdata","awT",@progbits
2637 ldq $27,__tls_get_addr($29) !literal!1
2638 lda $16,foo($29) !tlsgd!1
2639 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2640 ldq $27,__tls_get_addr($29) !literal!2
2641 lda $16,foo($29) !tlsldm!2
2642 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2643 ldq $1,foo($29) !gotdtprel
2644 ldah $2,foo($29) !dtprelhi
2645 lda $3,foo($2) !dtprello
2646 lda $4,foo($29) !dtprel
2647 ldq $1,foo($29) !gottprel
2648 ldah $2,foo($29) !tprelhi
2649 lda $3,foo($2) !tprello
2650 lda $4,foo($29) !tprel'
2653 tls_as_opt=--fatal-warnings
2655 cris-*-*|crisv32-*-*)
2657 .section ".tdata","awT",@progbits
2664 tls_as_opt=--fatal-warnings
2668 .section ".tdata","awT",@progbits
2680 .section ".tdata","awT",@progbits
2684 addil LT%foo-$tls_gdidx$,gp
2685 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2688 addil LT%foo-$tls_ldidx$,gp
2690 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2691 addil LR%foo-$tls_dtpoff$,%ret0
2692 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2694 addil LT%foo-$tls_ieoff$,gp
2695 ldw RT%foo-$tls_ieoff$(%r1),%t2
2698 addil LR%foo-$tls_leoff$,%t1
2699 ldo RR%foo-$tls_leoff$(%r1),%t2'
2702 tls_as_opt=--fatal-warnings
2706 .section ".tdata","awT",%progbits
2719 i[34567]86-*-solaris2.*)
2721 tga_func=___tls_get_addr
2727 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2729 .section .tdata,"awt",@progbits'
2733 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2734 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2738 .section ".tdata","awT",@progbits'
2741 tls_as_opt="--fatal-warnings"
2743 conftest_s="$conftest_s
2747 leal foo@tlsgd(,%ebx,1), %eax
2748 leal foo@tlsldm(%ebx), %eax
2749 leal foo@dtpoff(%eax), %edx
2750 movl foo@gottpoff(%ebx), %eax
2751 subl foo@gottpoff(%ebx), %eax
2752 addl foo@gotntpoff(%ebx), %eax
2753 movl foo@indntpoff, %eax
2754 movl \$foo@tpoff, %eax
2755 subl \$foo@tpoff, %eax
2756 leal foo@ntpoff(%ecx), %eax"
2760 .section ".tdata","awT",@progbits
2764 leaq foo@TLSGD(%rip), %rdi
2765 leaq foo@TLSLD(%rip), %rdi
2766 leaq foo@DTPOFF(%rax), %rdx
2767 movq foo@GOTTPOFF(%rip), %rax
2768 movq $foo@TPOFF, %rax'
2771 tls_as_opt=--fatal-warnings
2775 .section ".tdata","awT",@progbits
2778 addl r16 = @ltoff(@dtpmod(foo#)), gp
2779 addl r17 = @ltoff(@dtprel(foo#)), gp
2780 addl r18 = @ltoff(@tprel(foo#)), gp
2781 addl r19 = @dtprel(foo#), gp
2782 adds r21 = @dtprel(foo#), r13
2783 movl r23 = @dtprel(foo#)
2784 addl r20 = @tprel(foo#), gp
2785 adds r22 = @tprel(foo#), r13
2786 movl r24 = @tprel(foo#)'
2789 tls_as_opt=--fatal-warnings
2793 .section .tdata,"awT",@progbits
2797 addiu $4, $28, %tlsgd(x)
2798 addiu $4, $28, %tlsldm(x)
2799 lui $4, %dtprel_hi(x)
2800 addiu $4, $4, %dtprel_lo(x)
2801 lw $4, %gottprel(x)($28)
2802 lui $4, %tprel_hi(x)
2803 addiu $4, $4, %tprel_lo(x)'
2806 tls_as_opt='-32 --fatal-warnings'
2810 .section .tdata,"awT",@progbits
2815 move.l x@TLSGD(%a5),%a0
2816 move.l x@TLSLDM(%a5),%a0
2817 move.l x@TLSLDO(%a5),%a0
2818 move.l x@TLSIE(%a5),%a0
2819 move.l x@TLSLE(%a5),%a0'
2822 tls_as_opt='--fatal-warnings'
2826 .section ".tdata","awT",@progbits
2834 addi 3,31,ld0@got@tlsgd
2836 addi 3,31,x1@got@tlsld
2839 addis 9,3,x2@dtprel@ha
2840 addi 9,9,x2@dtprel@l
2841 lwz 9,x3@got@tprel(31)
2844 addis 9,2,x2@tprel@ha
2845 addi 9,9,x2@tprel@l'
2848 tls_as_opt="-a32 --fatal-warnings"
2852 .section ".tdata","awT",@progbits
2860 addi 3,2,ld0@got@tlsgd
2866 addi 3,2,x1@got@tlsld
2872 addis 9,3,x2@dtprel@ha
2873 addi 9,9,x2@dtprel@l
2876 ld 9,x3@got@dtprel(2)
2882 tls_as_opt="-a64 --fatal-warnings"
2886 .section ".tdata","awT",@progbits
2895 l %r1,foo@GOTNTPOFF(%r12)
2896 l %r1,0(%r1):tls_load:foo
2897 bas %r14,0(%r1,%r13):tls_gdcall:foo
2898 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2901 tls_as_opt="-m31 --fatal-warnings"
2905 .section ".tdata","awT",@progbits
2913 lg %r1,foo@GOTNTPOFF(%r12)
2914 larl %r1,foo@INDNTPOFF
2915 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2916 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2919 tls_as_opt="-m64 -Aesame --fatal-warnings"
2921 sh-*-* | sh[34]-*-*)
2923 .section ".tdata","awT",@progbits
2933 tls_as_opt=--fatal-warnings
2937 sparc*-sun-solaris2.*)
2939 tga_func=__tls_get_addr
2945 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2947 .section ".tdata",#alloc,#write,#tls'
2952 .section ".tdata","awT",@progbits'
2955 tls_as_opt="-32 --fatal-warnings"
2957 conftest_s="$conftest_s
2960 sethi %tgd_hi22(foo), %o0
2961 add %o0, %tgd_lo10(foo), %o1
2962 add %l7, %o1, %o0, %tgd_add(foo)
2963 call __tls_get_addr, %tgd_call(foo)
2964 sethi %tldm_hi22(foo), %l1
2965 add %l1, %tldm_lo10(foo), %l2
2966 add %l7, %l2, %o0, %tldm_add(foo)
2967 call __tls_get_addr, %tldm_call(foo)
2968 sethi %tldo_hix22(foo), %l3
2969 xor %l3, %tldo_lox10(foo), %l4
2970 add %o0, %l4, %l5, %tldo_add(foo)
2971 sethi %tie_hi22(foo), %o3
2972 add %o3, %tie_lo10(foo), %o3
2973 ld [%l7 + %o3], %o2, %tie_ld(foo)
2974 add %g7, %o2, %o4, %tie_add(foo)
2975 sethi %tle_hix22(foo), %l1
2976 xor %l1, %tle_lox10(foo), %o5
2977 ld [%g7 + %o5], %o1"
2981 .section ".tdata","awT",@progbits
2984 movi a8, foo@TLSFUNC
2985 movi a10, foo@TLSARG
2986 callx8.tls a8, foo@TLSCALL'
2993 if test "x$enable_tls" = xno ; then
2994 : # TLS explicitly disabled.
2995 elif test "x$enable_tls" = xyes ; then
2996 set_have_as_tls=yes # TLS explicitly enabled.
2997 elif test -z "$tls_first_major"; then
2998 : # If we don't have a check, assume no support.
3000 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3001 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3002 [set_have_as_tls=yes])
3006 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3007 # with TLS support are in use, native TLS cannot work.
3011 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3012 # gld with TLS support are in use, native TLS cannot work.
3015 # TLS was introduced in the Solaris 9 FCS release and backported to
3016 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3017 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3018 # ld and GCC don't support any longer.
3020 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3022 # Check ld and ld.so.1 TLS support.
3023 if echo "$ld_ver" | grep GNU > /dev/null; then
3024 # Assume all interesting versions of GNU ld have TLS support.
3025 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3029 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3031 min_tls_ld_vers_minor=280
3033 # Solaris 8/SPARC ld has TLS support since version 1.272.
3034 sparc*-*-solaris2.8)
3035 min_tls_ld_vers_minor=272
3037 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3039 min_tls_ld_vers_minor=374
3041 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3042 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3043 min_tls_ld_vers_minor=343
3046 if test "$ld_vers_major" -gt 1 || \
3047 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3053 AC_MSG_RESULT($ld_tls_support)
3056 save_LDFLAGS="$LDFLAGS"
3060 AC_MSG_CHECKING(alternate thread library)
3062 # TLS support was backported to Solaris 8 patches, but only lives in
3063 # the alternate thread library which became the default in Solaris 9.
3064 # We want to always use that, irrespective of TLS support.
3066 # Take multilib subdir into account. There's no spec to handle
3067 # this. The 64 symlink exists since Solaris 8.
3068 lwp_dir=/usr/lib/lwp
3069 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3070 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3077 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3078 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3079 [Define to the linker flags to use for -pthread.])
3080 AC_MSG_RESULT($lwp_dir)
3082 AC_MSG_CHECKING(library containing $tga_func)
3083 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3084 # (32-bit x86) only lived in libthread, so check for that. Keep
3085 # set_have_as_tls if found, disable if not.
3086 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3087 # Clear LIBS if we cannot support TLS.
3088 if test $set_have_as_tls = no; then
3091 # Always define LIB_TLS_SPEC, even without TLS support.
3092 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3093 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3094 AC_MSG_RESULT($LIBS)
3097 LDFLAGS="$save_LDFLAGS"
3100 if test $set_have_as_tls = yes ; then
3101 AC_DEFINE(HAVE_AS_TLS, 1,
3102 [Define if your assembler and linker support thread-local storage.])
3105 # Target-specific assembler checks.
3107 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3108 gcc_cv_ld_static_dynamic=no
3109 if test $in_tree_ld = yes ; then
3110 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3111 gcc_cv_ld_static_dynamic=yes
3113 elif test x$gcc_cv_ld != x; then
3114 # Check if linker supports -Bstatic/-Bdynamic option
3115 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3116 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3117 gcc_cv_ld_static_dynamic=yes
3120 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3121 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3122 [Define if your linker supports -Bstatic/-Bdynamic option.])
3124 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3126 if test x"$demangler_in_ld" = xyes; then
3127 AC_MSG_CHECKING(linker --demangle support)
3128 gcc_cv_ld_demangle=no
3129 if test $in_tree_ld = yes; then
3130 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3131 gcc_cv_ld_demangle=yes
3133 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3134 # Check if the GNU linker supports --demangle option
3135 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3136 gcc_cv_ld_demangle=yes
3139 if test x"$gcc_cv_ld_demangle" = xyes; then
3140 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3141 [Define if your linker supports --demangle option.])
3143 AC_MSG_RESULT($gcc_cv_ld_demangle)
3147 # All TARGET_ABI_OSF targets.
3148 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3149 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3150 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3153 extbl $3, $2, $3 !lituse_bytoff!1
3154 ldq $2, a($29) !literal!1
3155 ldq $4, b($29) !literal!2
3156 ldq_u $3, 0($2) !lituse_base!1
3157 ldq $27, f($29) !literal!5
3158 jsr $26, ($27), f !lituse_jsr!5
3159 ldah $29, 0($26) !gpdisp!3
3160 lda $0, c($29) !gprel
3161 ldah $1, d($29) !gprelhigh
3162 lda $1, d($1) !gprellow
3163 lda $29, 0($29) !gpdisp!3],,
3164 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3165 [Define if your assembler supports explicit relocations.])])
3166 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3167 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3170 ldq $27, a($29) !literal!1
3171 jsr $26, ($27), a !lituse_jsrdirect!1],,
3172 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3173 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3177 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3178 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3179 [-no-mul-bug-abort], [.text],,
3180 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3181 [Define if your assembler supports the -no-mul-bug-abort option.])])
3185 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3186 [.register %g2, #scratch],,
3187 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3188 [Define if your assembler supports .register.])])
3190 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3192 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3193 [Define if your assembler supports -relax option.])])
3195 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3196 gcc_cv_as_sparc_gotdata_op,,
3202 sethi %gdop_hix22(foo), %g1
3203 xor %g1, %gdop_lox10(foo), %g1
3204 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3205 [if test x$gcc_cv_ld != x \
3206 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3207 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3208 if test x$gcc_cv_objdump != x; then
3209 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3210 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3211 gcc_cv_as_sparc_gotdata_op=no
3213 gcc_cv_as_sparc_gotdata_op=yes
3217 gcc_cv_as_sparc_gotdata_op=yes
3221 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3222 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3224 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3225 gcc_cv_as_sparc_ua_pcrel,,
3233 .uaword %r_disp32(foo)],
3234 [if test x$gcc_cv_ld != x \
3235 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3236 gcc_cv_as_sparc_ua_pcrel=yes
3239 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3240 [Define if your assembler and linker support unaligned PC relative relocs.])
3242 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3243 gcc_cv_as_sparc_ua_pcrel_hidden,,
3248 .uaword %r_disp32(foo)
3249 .byte 0x32, 0x33, 0x34
3254 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3255 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3256 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3257 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3258 if $gcc_cv_objdump -R conftest 2> /dev/null \
3259 | grep 'DISP32' > /dev/null 2>&1; then
3262 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3266 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3267 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3268 ]) # unaligned pcrel relocs
3270 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3271 gcc_cv_as_sparc_offsetable_lo10,,
3274 or %g1, %lo(ab) + 12, %g1
3275 or %g1, %lo(ab + 12), %g1],
3276 [if test x$gcc_cv_objdump != x \
3277 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3278 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3279 gcc_cv_as_sparc_offsetable_lo10=yes
3281 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3282 [Define if your assembler supports offsetable %lo().])])
3286 i[34567]86-*-* | x86_64-*-*)
3290 # Full C++ conformance when using a shared libstdc++-v3 requires some
3291 # support from the Cygwin DLL, which in more recent versions exports
3292 # wrappers to aid in interposing and redirecting operators new, delete,
3293 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3294 # are configuring for a version of Cygwin that exports the wrappers.
3295 if test x$host = x$target; then
3296 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3298 # Can't check presence of libc functions during cross-compile, so
3299 # we just have to assume we're building for an up-to-date target.
3300 gcc_ac_cygwin_dll_wrappers=yes
3302 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3303 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3304 [Define if you want to generate code by default that assumes that the
3305 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3308 cygwin* | pe | mingw32*)
3309 # Recent binutils allows the three-operand form of ".comm" on PE. This
3310 # definition is used unconditionally to initialise the default state of
3311 # the target option variable that governs usage of the feature.
3312 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3313 [2,19,52],,[.comm foo,1,32])
3314 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3315 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3316 [Define if your assembler supports specifying the alignment
3317 of objects allocated using the GAS .comm command.])
3318 # Used for DWARF 2 in PE
3319 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3320 gcc_cv_as_ix86_pe_secrel32,
3326 [if test x$gcc_cv_ld != x \
3327 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3328 gcc_cv_as_ix86_pe_secrel32=yes
3331 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3332 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3333 # Test if the assembler supports the extended form of the .section
3334 # directive that specifies section alignment. LTO support uses this,
3335 # but normally only after installation, so we warn but don't fail the
3336 # configure if LTO is enabled but the assembler does not support it.
3337 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3338 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3339 if test x$gcc_cv_as_section_has_align != xyes; then
3340 case ",$enable_languages," in
3342 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3349 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3350 gcc_cv_as_ix86_filds,,,
3351 [filds mem; fists mem],,
3352 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3353 [Define if your assembler uses filds and fists mnemonics.])])
3355 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3356 gcc_cv_as_ix86_fildq,,,
3357 [fildq mem; fistpq mem],,
3358 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3359 [Define if your assembler uses fildq and fistq mnemonics.])])
3361 gcc_GAS_CHECK_FEATURE([cmov syntax],
3362 gcc_cv_as_ix86_cmov_sun_syntax,,,
3363 [cmovl.l %edx, %eax],,
3364 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3365 [Define if your assembler supports the Sun syntax for cmov.])])
3367 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3368 gcc_cv_as_ix86_ffreep,,,
3370 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3371 [Define if your assembler supports the ffreep mnemonic.])])
3373 gcc_GAS_CHECK_FEATURE([.quad directive],
3374 gcc_cv_as_ix86_quad,,,
3376 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3377 [Define if your assembler supports the .quad directive.])])
3379 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3380 gcc_cv_as_ix86_sahf,,,
3383 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3384 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3386 gcc_GAS_CHECK_FEATURE([swap suffix],
3387 gcc_cv_as_ix86_swap,,,
3388 [movl.s %esp, %ebp],,
3389 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3390 [Define if your assembler supports the swap suffix.])])
3392 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3393 gcc_cv_as_ix86_diff_sect_delta,,,
3401 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3402 [Define if your assembler supports the subtraction of symbols in different sections.])])
3404 # These two are used unconditionally by i386.[ch]; it is to be defined
3405 # to 1 if the feature is present, 0 otherwise.
3406 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3407 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3413 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3414 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3415 [Define true if the assembler supports '.long foo@GOTOFF'.])
3417 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3418 gcc_cv_as_ix86_rep_lock_prefix,,,
3420 lock addl %edi, (%eax,%esi)
3421 lock orl $0, (%esp)],,
3422 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3423 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3428 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3429 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3431 addl r15 = @ltoffx(x#), gp
3433 ld8.mov r16 = [[r15]], x#],,
3434 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3435 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3441 *-*-aix*) conftest_s=' .machine "pwr5"
3445 gcc_GAS_CHECK_FEATURE([.machine directive support],
3446 gcc_cv_as_machine_directive,,,
3447 [ .machine ppc7400])
3448 if test x$gcc_cv_as_machine_directive != xyes; then
3449 echo "*** This target requires an assembler supporting \".machine\"" >&2
3450 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3451 test x$build = x$target && exit 1
3455 *) conftest_s=' .machine power4
3460 gcc_GAS_CHECK_FEATURE([mfcr field support],
3461 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3463 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3464 [Define if your assembler supports mfcr field.])])
3467 *-*-aix*) conftest_s=' .machine "pwr5"
3470 *) conftest_s=' .machine power5
3475 gcc_GAS_CHECK_FEATURE([popcntb support],
3476 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3478 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3479 [Define if your assembler supports popcntb field.])])
3482 *-*-aix*) conftest_s=' .machine "pwr5x"
3485 *) conftest_s=' .machine power5
3490 gcc_GAS_CHECK_FEATURE([fp round support],
3491 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3493 [AC_DEFINE(HAVE_AS_FPRND, 1,
3494 [Define if your assembler supports fprnd.])])
3497 *-*-aix*) conftest_s=' .machine "pwr6"
3500 *) conftest_s=' .machine power6
3505 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3506 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3508 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3509 [Define if your assembler supports mffgpr and mftgpr.])])
3512 *-*-aix*) conftest_s=' .csect .text[[PR]]
3514 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3518 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3519 *) conftest_s=' .text
3521 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3524 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3525 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3527 [AC_DEFINE(HAVE_AS_REL16, 1,
3528 [Define if your assembler supports R_PPC_REL16 relocs.])])
3531 *-*-aix*) conftest_s=' .machine "pwr6"
3534 *) conftest_s=' .machine power6
3539 gcc_GAS_CHECK_FEATURE([compare bytes support],
3540 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3542 [AC_DEFINE(HAVE_AS_CMPB, 1,
3543 [Define if your assembler supports cmpb.])])
3546 *-*-aix*) conftest_s=' .machine "pwr6"
3549 *) conftest_s=' .machine power6
3554 gcc_GAS_CHECK_FEATURE([decimal float support],
3555 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3557 [AC_DEFINE(HAVE_AS_DFP, 1,
3558 [Define if your assembler supports DFP instructions.])])
3561 *-*-aix*) conftest_s=' .machine "pwr7"
3564 *) conftest_s=' .machine power7
3569 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3570 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3572 [AC_DEFINE(HAVE_AS_VSX, 1,
3573 [Define if your assembler supports VSX instructions.])])
3576 *-*-aix*) conftest_s=' .machine "pwr7"
3579 *) conftest_s=' .machine power7
3584 gcc_GAS_CHECK_FEATURE([popcntd support],
3585 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3587 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3588 [Define if your assembler supports POPCNTD instructions.])])
3591 *-*-aix*) conftest_s=' .csect .text[[PR]]
3593 *) conftest_s=' .text
3597 gcc_GAS_CHECK_FEATURE([lwsync support],
3598 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3600 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3601 [Define if your assembler supports LWSYNC instructions.])])
3604 *-*-aix*) conftest_s=' .machine "476"
3607 *) conftest_s=' .machine "476"
3612 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3613 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3615 [AC_DEFINE(HAVE_AS_DCI, 1,
3616 [Define if your assembler supports the DCI/ICI instructions.])])
3618 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3619 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3620 [.gnu_attribute 4,1],,
3621 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3622 [Define if your assembler supports .gnu_attribute.])])
3624 gcc_GAS_CHECK_FEATURE([tls marker support],
3625 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3626 [ bl __tls_get_addr(x@tlsgd)],,
3627 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3628 [Define if your assembler supports arg info for __tls_get_addr.])])
3632 gcc_GAS_CHECK_FEATURE([.ref support],
3633 gcc_cv_as_aix_ref, [2.21.0],,
3634 [ .csect stuff[[rw]]
3640 [AC_DEFINE(HAVE_AS_REF, 1,
3641 [Define if your assembler supports .ref])])
3647 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3648 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3649 [ lw $4,%gp_rel(foo)($4)],,
3650 [if test x$target_cpu_default = x
3651 then target_cpu_default=MASK_EXPLICIT_RELOCS
3652 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3654 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3655 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3656 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3657 [Define if the assembler understands -mno-shared.])])
3659 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3660 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3661 [.gnu_attribute 4,1],,
3662 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3663 [Define if your assembler supports .gnu_attribute.])])
3665 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3666 gcc_cv_as_mips_dtprelword, [2,18,0],,
3667 [.section .tdata,"awT",@progbits
3671 .dtprelword x+0x8000],,
3672 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3673 [Define if your assembler supports .dtprelword.])])
3675 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3676 gcc_cv_as_mips_dspr1_mult,,,
3686 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3687 [Define if your assembler supports DSPR1 mult.])])
3689 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3690 gcc_cv_as_ld_jalr_reloc=no
3691 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3692 if test $in_tree_ld = yes ; then
3693 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3694 && test $in_tree_ld_is_elf = yes; then
3695 gcc_cv_as_ld_jalr_reloc=yes
3697 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3698 echo ' .ent x' > conftest.s
3699 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3700 echo ' ld $25,%call16(y)($28)' >> conftest.s
3701 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3702 echo '1: jalr $25' >> conftest.s
3703 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3704 echo '1: jalr $25' >> conftest.s
3705 echo ' .end x' >> conftest.s
3706 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3707 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3708 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3709 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3710 gcc_cv_as_ld_jalr_reloc=yes
3716 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3717 if test x$target_cpu_default = x; then
3718 target_cpu_default=MASK_RELAX_PIC_CALLS
3720 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3723 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3725 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3726 [gcc_cv_ld_mips_personality_relaxation],
3727 [gcc_cv_ld_mips_personality_relaxation=no
3728 if test $in_tree_ld = yes ; then
3729 if test "$gcc_cv_gld_major_version" -eq 2 \
3730 -a "$gcc_cv_gld_minor_version" -ge 21 \
3731 -o "$gcc_cv_gld_major_version" -gt 2; then
3732 gcc_cv_ld_mips_personality_relaxation=yes
3734 elif test x$gcc_cv_as != x \
3735 -a x$gcc_cv_ld != x \
3736 -a x$gcc_cv_readelf != x ; then
3737 cat > conftest.s <<EOF
3739 .cfi_personality 0x80,indirect_ptr
3746 .section .data,"aw",@progbits
3750 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3751 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3752 if $gcc_cv_readelf -d conftest 2>&1 \
3753 | grep TEXTREL > /dev/null 2>&1; then
3755 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3756 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3759 gcc_cv_ld_mips_personality_relaxation=yes
3763 rm -f conftest.s conftest.o conftest])
3764 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3765 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3766 [Define if your linker can relax absolute .eh_frame personality
3767 pointers into PC-relative form.])
3772 # Mips and HP-UX need the GNU assembler.
3773 # Linux on IA64 might be able to use the Intel assembler.
3776 mips*-*-* | *-*-hpux* )
3777 if test x$gas_flag = xyes \
3778 || test x"$host" != x"$build" \
3779 || test ! -x "$gcc_cv_as" \
3780 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3783 echo "*** This configuration requires the GNU assembler" >&2
3789 # ??? Not all targets support dwarf2 debug_line, even within a version
3790 # of gas. Moreover, we need to emit a valid instruction to trigger any
3791 # info to the output file. So, as supported targets are added to gas 2.11,
3792 # add some instruction here to (also) show we expect this might work.
3793 # ??? Once 2.11 is released, probably need to add first known working
3794 # version to the per-target configury.
3796 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3797 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3807 if test x"$insn" != x; then
3809 .file 1 \"conftest.s\"
3812 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3813 gcc_cv_as_dwarf2_debug_line,
3814 [elf,2,11,0],, [$conftest_s],
3815 [if test x$gcc_cv_objdump != x \
3816 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3817 | grep debug_line > /dev/null 2>&1; then
3818 gcc_cv_as_dwarf2_debug_line=yes
3821 # The .debug_line file table must be in the exact order that
3822 # we specified the files, since these indices are also used
3823 # by DW_AT_decl_file. Approximate this test by testing if
3824 # the assembler bitches if the same index is assigned twice.
3825 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3826 gcc_cv_as_dwarf2_file_buggy,,,
3830 if test $gcc_cv_as_dwarf2_debug_line = yes \
3831 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3832 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3833 [Define if your assembler supports dwarf2 .file/.loc directives,
3834 and preserves file table indices exactly as given.])
3837 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3838 gcc_cv_as_gdwarf2_flag,
3839 [elf,2,11,0], [--gdwarf2], [$insn],,
3840 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3841 [Define if your assembler supports the --gdwarf2 option.])])
3843 gcc_GAS_CHECK_FEATURE([--gstabs option],
3844 gcc_cv_as_gstabs_flag,
3845 [elf,2,11,0], [--gstabs], [$insn],
3846 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3847 # and warns about it, but still exits successfully. So check for
3849 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3851 else gcc_cv_as_gstabs_flag=yes
3853 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3854 [Define if your assembler supports the --gstabs option.])])
3856 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3857 gcc_cv_as_debug_prefix_map_flag,
3858 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3859 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3860 [Define if your assembler supports the --debug-prefix-map option.])])
3863 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3866 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3867 [Define if your assembler supports .lcomm with an alignment field.])])
3869 AC_ARG_ENABLE(gnu-unique-object,
3870 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3872 [case $enable_gnu_unique_object in
3874 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3875 Valid choices are 'yes' and 'no'.]) ;;
3877 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3879 [.type foo, @gnu_unique_object],,
3880 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3881 [[if test x$host = x$build -a x$host = x$target &&
3882 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3883 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3884 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3885 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3886 if test "$glibcnum" -ge 2011 ; then
3887 enable_gnu_unique_object=yes
3890 if test x$enable_gnu_unique_object = xyes; then
3891 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3892 [Define if your assembler supports @gnu_unique_object.])
3895 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3896 [gcc_cv_as_line_zero],
3897 [gcc_cv_as_line_zero=no
3898 if test $in_tree_gas = yes; then
3899 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3900 elif test "x$gcc_cv_as" != x; then
3901 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3902 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3903 test "x`cat conftest.out`" = x
3905 gcc_cv_as_line_zero=yes
3907 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3908 cat conftest.s >&AS_MESSAGE_LOG_FD
3909 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3910 cat conftest.out >&AS_MESSAGE_LOG_FD
3912 rm -f conftest.o conftest.s conftest.out
3914 if test "x$gcc_cv_as_line_zero" = xyes; then
3915 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3916 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3919 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3920 gcc_cv_ld_eh_frame_hdr=no
3921 if test $in_tree_ld = yes ; then
3922 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3923 && test $in_tree_ld_is_elf = yes; then
3924 gcc_cv_ld_eh_frame_hdr=yes
3926 elif test x$gcc_cv_ld != x; then
3927 # Check if linker supports --eh-frame-hdr option
3928 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3929 gcc_cv_ld_eh_frame_hdr=yes
3932 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3933 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3934 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3935 [Define if your linker supports --eh-frame-hdr option.])
3937 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3939 AC_MSG_CHECKING(linker position independent executable support)
3941 if test $in_tree_ld = yes ; then
3942 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3943 && test $in_tree_ld_is_elf = yes; then
3946 elif test x$gcc_cv_ld != x; then
3947 # Check if linker supports -pie option
3948 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3952 if test x"$gcc_cv_ld_pie" = xyes; then
3953 AC_DEFINE(HAVE_LD_PIE, 1,
3954 [Define if your linker supports -pie option.])
3956 AC_MSG_RESULT($gcc_cv_ld_pie)
3958 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3959 gcc_cv_ld_eh_gc_sections=no
3960 if test $in_tree_ld = yes ; then
3961 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3962 && test $in_tree_ld_is_elf = yes; then
3963 gcc_cv_ld_eh_gc_sections=yes
3965 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3966 cat > conftest.s <<EOF
3969 .type _start, @function
3972 .size _start, .-_start
3973 .section .text.foo,"ax",@progbits
3974 .type foo, @function
3978 .section .gcc_except_table.foo,"a",@progbits
3981 .section .eh_frame,"a",@progbits
3984 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3985 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3986 | grep "gc-sections option ignored" > /dev/null; then
3987 gcc_cv_ld_eh_gc_sections=no
3988 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3989 | grep gcc_except_table > /dev/null; then
3990 gcc_cv_ld_eh_gc_sections=yes
3991 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3992 if test x$gcc_cv_as_comdat_group != xyes; then
3993 gcc_cv_ld_eh_gc_sections=no
3994 cat > conftest.s <<EOF
3997 .type _start, @function
4000 .size _start, .-_start
4001 .section .gnu.linkonce.t.foo,"ax",@progbits
4002 .type foo, @function
4006 .section .gcc_except_table.foo,"a",@progbits
4009 .section .eh_frame,"a",@progbits
4012 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4013 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4014 | grep "gc-sections option ignored" > /dev/null; then
4015 gcc_cv_ld_eh_gc_sections=no
4016 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4017 | grep gcc_except_table > /dev/null; then
4018 gcc_cv_ld_eh_gc_sections=yes
4024 rm -f conftest.s conftest.o conftest
4028 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4029 gcc_cv_ld_eh_gc_sections=no
4032 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4033 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4034 [Define if your linker supports garbage collection of
4035 sections in presence of EH frames.])
4037 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4043 AC_CACHE_CHECK(linker --as-needed support,
4044 gcc_cv_ld_as_needed,
4045 [gcc_cv_ld_as_needed=no
4046 if test $in_tree_ld = yes ; then
4047 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4048 && test $in_tree_ld_is_elf = yes; then
4049 gcc_cv_ld_as_needed=yes
4051 elif test x$gcc_cv_ld != x; then
4052 # Check if linker supports --as-needed and --no-as-needed options
4053 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4054 gcc_cv_ld_as_needed=yes
4058 if test x"$gcc_cv_ld_as_needed" = xyes; then
4059 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4060 [Define if your linker supports --as-needed and --no-as-needed options.])
4063 case "$target:$tm_file" in
4064 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4065 AC_CACHE_CHECK(linker support for omitting dot symbols,
4066 gcc_cv_ld_no_dot_syms,
4067 [gcc_cv_ld_no_dot_syms=no
4068 if test $in_tree_ld = yes ; then
4069 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4070 gcc_cv_ld_no_dot_syms=yes
4072 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4073 cat > conftest1.s <<EOF
4077 cat > conftest2.s <<EOF
4078 .section ".opd","aw"
4083 .quad .LEfoo,.TOC.@tocbase,0
4089 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4090 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4091 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4092 gcc_cv_ld_no_dot_syms=yes
4094 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4097 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4098 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4099 [Define if your PowerPC64 linker only needs function descriptor syms.])
4102 AC_CACHE_CHECK(linker large toc support,
4103 gcc_cv_ld_large_toc,
4104 [gcc_cv_ld_large_toc=no
4105 if test $in_tree_ld = yes ; then
4106 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4107 gcc_cv_ld_large_toc=yes
4109 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4110 cat > conftest.s <<EOF
4111 .section ".tbss","awT",@nobits
4117 addis 9,13,ie0@got@tprel@ha
4118 ld 9,ie0@got@tprel@l(9)
4120 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4121 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4122 gcc_cv_ld_large_toc=yes
4124 rm -f conftest conftest.o conftest.s
4127 if test x"$gcc_cv_ld_large_toc" = xyes; then
4128 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4129 [Define if your PowerPC64 linker supports a large TOC.])
4134 AC_CACHE_CHECK(linker --build-id support,
4136 [gcc_cv_ld_buildid=no
4137 if test $in_tree_ld = yes ; then
4138 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4139 "$gcc_cv_gld_minor_version" -ge 18 -o \
4140 "$gcc_cv_gld_major_version" -gt 2 \
4141 && test $in_tree_ld_is_elf = yes; then
4142 gcc_cv_ld_buildid=yes
4144 elif test x$gcc_cv_ld != x; then
4145 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4146 gcc_cv_ld_buildid=yes
4149 if test x"$gcc_cv_ld_buildid" = xyes; then
4150 AC_DEFINE(HAVE_LD_BUILDID, 1,
4151 [Define if your linker supports --build-id.])
4154 AC_ARG_ENABLE(linker-build-id,
4155 [ --enable-linker-build-id
4156 compiler will always pass --build-id to linker],
4158 enable_linker_build_id=no)
4160 if test x"$enable_linker_build_id" = xyes; then
4161 if test x"$gcc_cv_ld_buildid" = xyes; then
4162 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4163 [Define if gcc should always pass --build-id to linker.])
4165 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4169 # In binutils 2.21, GNU ld gained support for new emulations fully
4170 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4171 AC_CACHE_CHECK(linker *_sol2 emulation support,
4172 gcc_cv_ld_sol2_emulation,
4173 [gcc_cv_ld_sol2_emulation=no
4174 if test $in_tree_ld = yes ; then
4175 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4176 "$gcc_cv_gld_minor_version" -ge 21 -o \
4177 "$gcc_cv_gld_major_version" -gt 2 \
4178 && test $in_tree_ld_is_elf = yes; then
4179 gcc_cv_ld_sol2_emulation=yes
4181 elif test x$gcc_cv_ld != x; then
4182 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4183 grep _sol2 > /dev/null; then
4184 gcc_cv_ld_sol2_emulation=yes
4187 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4188 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4189 [Define if your linker supports the *_sol2 emulations.])
4192 AC_CACHE_CHECK(linker --sysroot support,
4194 [gcc_cv_ld_sysroot=no
4195 if test $in_tree_ld = yes ; then
4196 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4197 gcc_cv_ld_sysroot=yes
4199 elif test x$gcc_cv_ld != x; then
4200 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4201 gcc_cv_ld_sysroot=yes
4204 if test x"$gcc_cv_ld_sysroot" = xyes; then
4205 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4206 [Define if your linker supports --sysroot.])
4209 if test x$with_sysroot = x && test x$host = x$target \
4210 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4211 && test "$prefix" != "NONE"; then
4212 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4213 [Define to PREFIX/include if cpp should also search that directory.])
4216 # Test for stack protector support in target C library.
4217 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4218 gcc_cv_libc_provides_ssp,
4219 [gcc_cv_libc_provides_ssp=no
4221 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4222 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4223 if test "x$with_headers" != x; then
4224 glibc_header_dir=$with_headers
4225 elif test "x$with_sysroot" = x; then
4226 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4227 elif test "x$with_build_sysroot" != "x"; then
4228 glibc_header_dir="${with_build_sysroot}/usr/include"
4229 elif test "x$with_sysroot" = xyes; then
4230 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4232 glibc_header_dir="${with_sysroot}/usr/include"
4235 glibc_header_dir=/usr/include
4237 [# glibc 2.4 and later provides __stack_chk_fail and
4238 # either __stack_chk_guard, or TLS access to stack guard canary.
4239 if test -f $glibc_header_dir/features.h \
4240 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4241 $glibc_header_dir/features.h > /dev/null; then
4242 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4243 $glibc_header_dir/features.h > /dev/null; then
4244 gcc_cv_libc_provides_ssp=yes
4245 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4246 $glibc_header_dir/features.h > /dev/null \
4247 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4248 $glibc_header_dir/features.h > /dev/null; then
4249 gcc_cv_libc_provides_ssp=yes
4250 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4251 $glibc_header_dir/features.h > /dev/null && \
4252 test -f $glibc_header_dir/bits/uClibc_config.h && \
4253 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4254 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4255 gcc_cv_libc_provides_ssp=yes
4260 # Avoid complicated tests (see
4261 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4262 # simply assert that glibc does provide this, which is true for all
4263 # realistically usable GNU/Hurd configurations.
4264 gcc_cv_libc_provides_ssp=yes;;
4265 *-*-darwin* | *-*-freebsd*)
4266 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4267 [echo "no __stack_chk_fail on this target"])
4269 *) gcc_cv_libc_provides_ssp=no ;;
4272 if test x$gcc_cv_libc_provides_ssp = xyes; then
4273 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4274 [Define if your target C library provides stack protector support])
4277 # Check if TFmode long double should be used by default or not.
4278 # Some glibc targets used DFmode long double, but with glibc 2.4
4279 # and later they can use TFmode.
4281 powerpc*-*-linux* | \
4286 AC_ARG_WITH(long-double-128,
4287 [ --with-long-double-128 Use 128-bit long double by default.],
4288 gcc_cv_target_ldbl128="$with_long_double_128",
4289 [[gcc_cv_target_ldbl128=no
4290 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4291 if test "x$with_sysroot" = x; then
4292 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4293 elif test "x$with_build_sysroot" != "x"; then
4294 glibc_header_dir="${with_build_sysroot}/usr/include"
4295 elif test "x$with_sysroot" = xyes; then
4296 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4298 glibc_header_dir="${with_sysroot}/usr/include"
4301 glibc_header_dir=/usr/include
4303 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4304 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4305 && gcc_cv_target_ldbl128=yes
4309 if test x$gcc_cv_target_ldbl128 = xyes; then
4310 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4311 [Define if TFmode long double should be the default])
4314 # Find out what GC implementation we want, or may, use.
4316 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4324 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4327 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4332 echo "Using $GGC for garbage collection."
4334 # Libraries to use on the host. This will normally be set by the top
4335 # level Makefile. Here we simply capture the value for our Makefile.
4336 if test -z "${HOST_LIBS+set}"; then
4341 # Use the system's zlib library.
4343 zlibinc="-I\$(srcdir)/../zlib"
4344 AC_ARG_WITH(system-zlib,
4345 [ --with-system-zlib use installed libz],
4352 dnl Very limited version of automake's enable-maintainer-mode
4354 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4355 dnl maintainer-mode is disabled by default
4356 AC_ARG_ENABLE(maintainer-mode,
4357 [ --enable-maintainer-mode
4358 enable make rules and dependencies not useful
4359 (and sometimes confusing) to the casual installer],
4360 maintainer_mode=$enableval,
4363 AC_MSG_RESULT($maintainer_mode)
4365 if test "$maintainer_mode" = "yes"; then
4376 # Make empty files to contain the specs and options for each language.
4377 # Then add #include lines to for a compiler that has specs and/or options.
4383 # These (without "all_") are set in each config-lang.in.
4384 # `language' must be a single word so is spelled singularly.
4387 all_outputs='Makefile'
4388 # List of language makefile fragments.
4390 # Additional files for gengtype
4391 all_gtfiles="$target_gtfiles"
4393 # These are the languages that are set in --enable-languages,
4394 # and are available in the GCC tree.
4395 all_selected_languages=
4397 # Add the language fragments.
4398 # Languages are added via two mechanisms. Some information must be
4399 # recorded in makefile variables, these are defined in config-lang.in.
4400 # We accumulate them and plug them into the main Makefile.
4401 # The other mechanism is a set of hooks for each of the main targets
4402 # like `clean', `install', etc.
4404 language_hooks="Make-hooks"
4406 for lang in ${srcdir}/*/config-lang.in
4409 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4411 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4412 if test "x$lang_alias" = x
4414 echo "$lang doesn't set \$language." 1>&2
4417 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4418 subdirs="$subdirs $subdir"
4420 # $gcc_subdir is where the gcc integration files are to be found
4421 # for a language, both for internal compiler purposes (compiler
4422 # sources implementing front-end to GCC tree converters), and for
4423 # build infrastructure purposes (Make-lang.in, etc.)
4425 # This will be <subdir> (relative to $srcdir) if a line like
4426 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4427 # is found in <langdir>/config-lang.in, and will remain <langdir>
4430 # Except for the language alias (fetched above), the regular
4431 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4432 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4433 # only this and the language alias.
4435 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4436 if [ "$gcc_subdir" = "" ]; then
4437 gcc_subdir="$subdir"
4440 case ",$enable_languages," in
4442 all_selected_languages="$all_selected_languages $lang_alias"
4443 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4444 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4456 . ${srcdir}/$gcc_subdir/config-lang.in
4457 if test "x$language" = x
4459 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4464 case ",$enable_languages," in
4467 for i in $subdir_requires; do
4468 test -f "${srcdir}/$i/config-lang.in" && continue
4476 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4477 if test -f $srcdir/$gcc_subdir/lang.opt; then
4478 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4479 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4481 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4482 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4484 all_languages="$all_languages $language"
4485 all_compilers="$all_compilers $compilers"
4486 all_outputs="$all_outputs $outputs"
4487 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4488 case ",$enable_languages," in
4490 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4492 AC_SUBST(enable_lto)
4498 # Pick up gtfiles for c
4500 . ${srcdir}/c-config-lang.in
4501 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4504 for language in $all_selected_languages
4506 check_languages="$check_languages check-$language"
4509 # We link each language in with a set of hooks, reached indirectly via
4510 # lang.${target}. Only do so for selected languages.
4514 target_list="all.cross start.encap rest.encap tags \
4515 install-common install-man install-info install-pdf install-html dvi \
4516 pdf html uninstall info man srcextra srcman srcinfo \
4517 mostlyclean clean distclean maintainer-clean install-plugin"
4519 for t in $target_list
4522 for lang in $all_selected_languages
4526 echo "lang.$t: $x" >> Make-hooks
4530 # Option include files
4533 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4534 option_includes="option-includes.mk"
4535 AC_SUBST_FILE(option_includes)
4543 echo "dir ." > .gdbinit
4544 echo "dir ${srcdir}" >> .gdbinit
4545 if test x$gdb_needs_out_file_path = xyes
4547 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4549 if test "x$subdirs" != x; then
4552 echo "dir ${srcdir}/$s" >> .gdbinit
4555 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4557 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4558 AC_SUBST(gcc_tooldir)
4561 # Find a directory in which to install a shared libgcc.
4563 AC_ARG_ENABLE(version-specific-runtime-libs,
4564 [ --enable-version-specific-runtime-libs
4565 specify that runtime libraries should be
4566 installed in a compiler-specific directory])
4568 AC_ARG_WITH(slibdir,
4569 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4570 slibdir="$with_slibdir",
4571 if test "${enable_version_specific_runtime_libs+set}" = set; then
4572 slibdir='$(libsubdir)'
4573 elif test "$host" != "$target"; then
4574 slibdir='$(build_tooldir)/lib'
4580 # Substitute configuration variables
4583 AC_SUBST(all_compilers)
4584 AC_SUBST(all_gtfiles)
4585 AC_SUBST(all_lang_makefrags)
4586 AC_SUBST(all_languages)
4587 AC_SUBST(all_selected_languages)
4588 AC_SUBST(build_exeext)
4589 AC_SUBST(build_install_headers_dir)
4590 AC_SUBST(build_xm_file_list)
4591 AC_SUBST(build_xm_include_list)
4592 AC_SUBST(build_xm_defines)
4593 AC_SUBST(build_file_translate)
4594 AC_SUBST(check_languages)
4595 AC_SUBST(cpp_install_dir)
4596 AC_SUBST(xmake_file)
4597 AC_SUBST(tmake_file)
4598 AC_SUBST(TM_ENDIAN_CONFIG)
4599 AC_SUBST(TM_MULTILIB_CONFIG)
4600 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4601 AC_SUBST(extra_gcc_objs)
4602 AC_SUBST(user_headers_inc_next_pre)
4603 AC_SUBST(user_headers_inc_next_post)
4604 AC_SUBST(extra_headers_list)
4605 AC_SUBST(extra_objs)
4606 AC_SUBST(extra_parts)
4607 AC_SUBST(extra_passes)
4608 AC_SUBST(extra_programs)
4609 AC_SUBST(float_h_file)
4610 AC_SUBST(gcc_config_arguments)
4611 AC_SUBST(gcc_gxx_include_dir)
4612 AC_SUBST(host_exeext)
4613 AC_SUBST(host_xm_file_list)
4614 AC_SUBST(host_xm_include_list)
4615 AC_SUBST(host_xm_defines)
4616 AC_SUBST(out_host_hook_obj)
4618 AC_SUBST(lang_opt_files)
4619 AC_SUBST(lang_specs_files)
4620 AC_SUBST(lang_tree_files)
4621 AC_SUBST(local_prefix)
4623 AC_SUBST(objc_boehm_gc)
4625 AC_SUBST(out_object_file)
4626 AC_SUBST(thread_file)
4627 AC_SUBST(tm_file_list)
4628 AC_SUBST(tm_include_list)
4629 AC_SUBST(tm_defines)
4630 AC_SUBST(tm_p_file_list)
4631 AC_SUBST(tm_p_include_list)
4632 AC_SUBST(xm_file_list)
4633 AC_SUBST(xm_include_list)
4634 AC_SUBST(xm_defines)
4635 AC_SUBST(use_gcc_stdint)
4636 AC_SUBST(c_target_objs)
4637 AC_SUBST(cxx_target_objs)
4638 AC_SUBST(fortran_target_objs)
4639 AC_SUBST(target_cpu_default)
4641 AC_SUBST_FILE(language_hooks)
4644 if test x${build} = x${host} ; then
4645 if test x${host} = x${target} ; then
4646 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4648 echo "Links are now set up to build a cross-compiler" 1>&2
4649 echo " from ${host} to ${target}." 1>&2
4652 if test x${host} = x${target} ; then
4653 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4654 echo " for ${target}." 1>&2
4656 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4657 echo " from ${host} to ${target}." 1>&2
4661 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4662 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4664 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4665 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4667 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4668 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4669 if test "x${CLOOGLIBS}" != "x" ; then
4670 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4673 # Check for plugin support
4674 AC_ARG_ENABLE(plugin,
4675 [ --enable-plugin enable plugin support],
4676 enable_plugin=$enableval,
4677 enable_plugin=yes; default_plugin=yes)
4683 if test x$build = x$host; then
4684 export_sym_check="nm${exeext} -g"
4685 elif test x$host = x$target; then
4686 export_sym_check="$gcc_cv_nm -g"
4692 if test x$build = x$host; then
4693 export_sym_check="objdump${exeext} -T"
4694 elif test x$host = x$target; then
4695 export_sym_check="$gcc_cv_objdump -T"
4702 if test x"$enable_plugin" = x"yes"; then
4704 AC_MSG_CHECKING([for exported symbols])
4705 if test "x$export_sym_check" != x; then
4706 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4707 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4708 if $export_sym_check conftest | grep foobar > /dev/null; then
4709 : # No need to use a flag
4710 AC_MSG_RESULT([yes])
4712 AC_MSG_RESULT([yes])
4713 AC_MSG_CHECKING([for -rdynamic])
4714 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4715 if $export_sym_check conftest | grep foobar > /dev/null; then
4717 pluginlibs="-rdynamic"
4722 AC_MSG_RESULT([$plugin_rdynamic])
4725 AC_MSG_RESULT([unable to check])
4730 AC_SEARCH_LIBS([dlopen], [dl])
4731 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4732 pluginlibs="$pluginlibs -ldl"
4736 # Check that we can build shared objects with -fPIC -shared
4737 saved_LDFLAGS="$LDFLAGS"
4738 saved_CFLAGS="$CFLAGS"
4741 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4742 CFLAGS="$CFLAGS -fPIC"
4743 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4746 CFLAGS="$CFLAGS -fPIC"
4747 LDFLAGS="$LDFLAGS -fPIC -shared"
4750 AC_MSG_CHECKING([for -fPIC -shared])
4752 [extern int X;],[return X == 0;],
4753 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4754 [AC_MSG_RESULT([no]); have_pic_shared=no])
4755 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4759 LDFLAGS="$saved_LDFLAGS"
4760 CFLAGS="$saved_CFLAGS"
4762 # If plugin support had been requested but not available, fail.
4763 if test x"$enable_plugin" = x"no" ; then
4764 if test x"$default_plugin" != x"yes"; then
4766 Building GCC with plugin support requires a host that supports
4767 -fPIC, -shared, -ldl and -rdynamic.])
4772 AC_SUBST(pluginlibs)
4773 AC_SUBST(enable_plugin)
4774 if test x"$enable_plugin" = x"yes"; then
4775 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4778 # Configure the subdirectories
4779 # AC_CONFIG_SUBDIRS($subdirs)
4781 # Create the Makefile
4782 # and configure language subdirectories
4783 AC_CONFIG_FILES($all_outputs)
4785 AC_CONFIG_COMMANDS([default],
4787 case ${CONFIG_HEADERS} in
4788 *auto-host.h:config.in*)
4791 # Make sure all the subdirs exist.
4792 for d in $subdirs doc build c-family
4794 test -d $d || mkdir $d
4797 [subdirs='$subdirs'])