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} ${srcdir}/../missing ar)
887 # --------------------
888 # Checks for C headers
889 # --------------------
891 # Need to reject headers which give warnings, so that the -Werror bootstrap
892 # works later. *sigh* This needs to come before all header checks.
899 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
900 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
901 sys/resource.h sys/param.h sys/times.h sys/stat.h \
902 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
904 # Check for thread headers.
905 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
906 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
908 # These tests can't be done till we know if we have limits.h.
912 # ----------------------
913 # Checks for C++ headers
914 # ----------------------
916 dnl Autoconf will give an error in the configure script if there is no
917 dnl C++ preprocessor. Hack to prevent that.
918 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
920 m4_popdef([AC_MSG_ERROR])[]dnl
924 AC_CHECK_HEADERS(unordered_map)
925 AC_CHECK_HEADERS(tr1/unordered_map)
926 AC_CHECK_HEADERS(ext/hash_map)
935 # These libraries may be used by collect2.
936 # We may need a special search path to get them linked.
937 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
939 for libs in '' -lld -lmld \
940 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
941 '-L/usr/lib/cmplrs/cc3.11 -lmld'
944 AC_TRY_LINK_FUNC(ldopen,
945 [gcc_cv_collect2_libs="$libs"; break])
948 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
949 case $gcc_cv_collect2_libs in
951 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
953 AC_SUBST(COLLECT2_LIBS)
955 # When building Ada code on Alpha, we need exc_resume which is usually in
956 # -lexc. So test for it.
959 AC_SEARCH_LIBS(exc_resume, exc)
962 AC_SUBST(GNAT_LIBEXC)
964 # Some systems put ldexp and frexp in libm instead of libc; assume
965 # they're both in the same place. jcf-dump needs them.
968 AC_SEARCH_LIBS(ldexp, m)
973 # Use <inttypes.h> only if it exists,
974 # doesn't clash with <sys/types.h>, and declares intmax_t.
975 AC_MSG_CHECKING(for inttypes.h)
976 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
977 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
978 [[#include <sys/types.h>
979 #include <inttypes.h>]],
980 [[intmax_t i = -1;]])],
981 [gcc_cv_header_inttypes_h=yes],
982 [gcc_cv_header_inttypes_h=no])])
983 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
984 if test $gcc_cv_header_inttypes_h = yes; then
985 AC_DEFINE(HAVE_INTTYPES_H, 1,
986 [Define if you have a working <inttypes.h> header file.])
989 dnl Disabled until we have a complete test for buggy enum bitfields.
990 dnl gcc_AC_C_ENUM_BF_UNSIGNED
992 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
993 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
994 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
995 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
996 putchar_unlocked putc_unlocked)
997 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
998 sysconf strsignal getrusage nl_langinfo \
999 gettimeofday mbstowcs wcswidth mmap setlocale \
1002 if test x$ac_cv_func_mbstowcs = xyes; then
1003 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1004 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1010 [gcc_cv_func_mbstowcs_works=yes],
1011 [gcc_cv_func_mbstowcs_works=no],
1012 [gcc_cv_func_mbstowcs_works=yes])])
1013 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1014 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1015 [Define this macro if mbstowcs does not crash when its
1016 first argument is NULL.])
1020 AC_CHECK_TYPE(ssize_t, int)
1021 AC_CHECK_TYPE(caddr_t, char *)
1023 gcc_AC_FUNC_MMAP_BLACKLIST
1027 # Under VMS, vfork works very differently than on Unix. The standard test
1028 # won't work, and it isn't easily adaptable. It makes more sense to
1030 ac_cv_func_vfork_works=yes
1036 # Until we have in-tree GNU iconv:
1038 AC_SUBST(LIBICONV_DEP)
1044 # We will need to find libiberty.h and ansidecl.h
1045 saved_CFLAGS="$CFLAGS"
1046 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1047 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1048 strsignal strstr strverscmp \
1049 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1050 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1051 #include "ansidecl.h"
1052 #include "system.h"])
1054 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1055 #include "ansidecl.h"
1057 #ifdef HAVE_SYS_RESOURCE_H
1058 #include <sys/resource.h>
1062 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1063 #include "ansidecl.h"
1065 #ifdef HAVE_SYS_RESOURCE_H
1066 #include <sys/resource.h>
1068 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1069 [Define to `long' if <sys/resource.h> doesn't define.])])
1071 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1072 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1073 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1074 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1075 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1076 #include "ansidecl.h"
1085 gcc_AC_CHECK_DECLS(times, , ,[
1086 #include "ansidecl.h"
1088 #ifdef HAVE_SYS_TIMES_H
1089 #include <sys/times.h>
1093 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1094 #include "ansidecl.h"
1099 # More time-related stuff.
1100 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1101 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1102 #include "ansidecl.h"
1104 #ifdef HAVE_SYS_TIMES_H
1105 #include <sys/times.h>
1107 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1108 if test $ac_cv_struct_tms = yes; then
1109 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1110 [Define if <sys/times.h> defines struct tms.])
1113 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1114 # revisit after autoconf 2.50.
1115 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1116 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1117 #include "ansidecl.h"
1119 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1120 if test $gcc_cv_type_clock_t = yes; then
1121 AC_DEFINE(HAVE_CLOCK_T, 1,
1122 [Define if <time.h> defines clock_t.])
1125 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1126 CFLAGS="$saved_CFLAGS"
1128 gcc_AC_INITFINI_ARRAY
1130 # mkdir takes a single argument on some systems.
1131 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1139 # With Setjmp/Longjmp based exception handling.
1140 AC_ARG_ENABLE(sjlj-exceptions,
1141 [ --enable-sjlj-exceptions
1142 arrange to use setjmp/longjmp exception handling],
1145 if test $enableval != yes; then
1146 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1151 force_sjlj_exceptions=yes],
1154 force_sjlj_exceptions=yes
1158 force_sjlj_exceptions=no
1161 if test $force_sjlj_exceptions = yes; then
1162 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1163 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1164 [Define 0/1 to force the choice for exception handling model.])
1167 # For platforms with the unwind ABI which includes an unwind library,
1168 # libunwind, we can choose to use the system libunwind.
1169 # config.gcc also contains tests of with_system_libunwind.
1170 GCC_CHECK_UNWIND_GETIPINFO
1172 # --------------------------------------------------------
1173 # Build, host, and target specific configuration fragments
1174 # --------------------------------------------------------
1176 # Collect build-machine-specific information.
1177 . ${srcdir}/config.build
1179 # Collect host-machine-specific information.
1180 . ${srcdir}/config.host
1184 # Collect target-machine-specific information.
1185 . ${srcdir}/config.gcc
1187 extra_objs="${host_extra_objs} ${extra_objs}"
1188 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1190 # Default the target-machine variables that were not explicitly set.
1191 if test x"$tm_file" = x
1192 then tm_file=$cpu_type/$cpu_type.h; fi
1194 if test x"$extra_headers" = x
1195 then extra_headers=; fi
1197 if test x$md_file = x
1198 then md_file=$cpu_type/$cpu_type.md; fi
1200 if test x$out_file = x
1201 then out_file=$cpu_type/$cpu_type.c; fi
1203 if test x"$tmake_file" = x
1204 then tmake_file=$cpu_type/t-$cpu_type
1207 if test x"$dwarf2" = xyes
1208 then tm_file="$tm_file tm-dwarf2.h"
1211 # Say what files are being used for the output code and MD file.
1212 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1213 echo "Using \`$srcdir/config/$md_file' as machine description file."
1215 # If any of the xm_file variables contain nonexistent files, warn
1216 # about them and drop them.
1219 for x in $build_xm_file; do
1220 if test -f $srcdir/config/$x
1222 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1228 for x in $host_xm_file; do
1229 if test -f $srcdir/config/$x
1231 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1237 for x in $xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for f in $tm_file; do
1249 if test $count = ax; then
1250 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1252 echo "Using the following target machine macro files:"
1253 for f in $tm_file; do
1254 echo " $srcdir/config/$f"
1258 if test x$need_64bit_hwint = xyes; then
1259 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1260 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1263 if test x$use_long_long_for_widest_fast_int = xyes; then
1264 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1265 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1266 efficiently supported by the host hardware.])
1270 for f in $host_xm_file; do
1273 if test $count = a; then
1275 elif test $count = ax; then
1276 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1278 echo "Using the following host machine macro files:"
1279 for f in $host_xm_file; do
1280 echo " $srcdir/config/$f"
1283 echo "Using ${out_host_hook_obj} for host machine hooks."
1285 if test "$host_xm_file" != "$build_xm_file"; then
1287 for f in $build_xm_file; do
1290 if test $count = a; then
1292 elif test $count = ax; then
1293 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1295 echo "Using the following build machine macro files:"
1296 for f in $build_xm_file; do
1297 echo " $srcdir/config/$f"
1304 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1305 gcc_cv_mcontext_underscores,
1307 #include <sys/cdefs.h>
1308 #include <sys/signal.h>
1309 #include <ucontext.h>
1310 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1312 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1313 if test $gcc_cv_mcontext_underscores = yes; then
1314 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1315 [mcontext_t fields start with __])
1324 # Check if a valid thread package
1325 case ${enable_threads} in
1328 target_thread_file='single'
1332 target_thread_file='single'
1334 aix | dce | gnat | irix | posix | posix95 | rtems | \
1335 single | solaris | vxworks | win32 | mipssde)
1336 target_thread_file=${enable_threads}
1339 echo "${enable_threads} is an unknown thread package" 1>&2
1344 if test x${thread_file} = x; then
1345 # No thread file set by target-specific clauses in config.gcc,
1346 # so use file chosen by default logic above
1347 thread_file=${target_thread_file}
1350 # Make gthr-default.h if we have a thread file.
1352 if test $thread_file != single; then
1353 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1354 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1355 rm -f gthr-default.h-t
1357 mv -f gthr-default.h-t gthr-default.h
1359 gthread_flags=-DHAVE_GTHR_DEFAULT
1361 AC_SUBST(gthread_flags)
1368 if test x$enable___cxa_atexit = xyes || \
1369 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1370 if test x$host = x$target; then
1372 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1373 # keyed to flag_use_cxa_atexit
1378 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1379 [echo "__cxa_atexit can't be enabled on this target"])
1383 # We can't check for __cxa_atexit when building a cross, so assume
1387 if test x$use_cxa_atexit = xyes; then
1388 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1389 [Define if you want to use __cxa_atexit, rather than atexit, to
1390 register C++ destructors for local statics and global objects.
1391 This is essential for fully standards-compliant handling of
1392 destructors, but requires __cxa_atexit in libc.])
1396 # Look for a file containing extra machine modes.
1397 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1398 extra_modes_file='$(srcdir)'/config/${extra_modes}
1399 AC_SUBST(extra_modes_file)
1400 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1401 [Define to the name of a file containing a list of extra machine modes
1402 for this architecture.])
1405 # Convert extra_options into a form suitable for Makefile use.
1408 for f in $extra_options; do
1409 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1410 all_opt_files="$all_opt_files $srcdir/config/$f"
1412 AC_SUBST(extra_opt_files)
1414 # auto-host.h is the file containing items generated by autoconf and is
1415 # the first file included by config.h.
1416 # If host=build, it is correct to have bconfig include auto-host.h
1417 # as well. If host!=build, we are in error and need to do more
1418 # work to find out the build config parameters.
1419 if test x$host = x$build
1421 build_auto=auto-host.h
1423 # We create a subdir, then run autoconf in the subdir.
1424 # To prevent recursion we set host and build for the new
1425 # invocation of configure to the build for this invocation
1432 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1433 *) realsrcdir=../${srcdir};;
1435 saved_CFLAGS="${CFLAGS}"
1436 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1437 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1438 ${realsrcdir}/configure \
1439 --enable-languages=${enable_languages-all} \
1440 --target=$target_alias --host=$build_alias --build=$build_alias
1441 CFLAGS="${saved_CFLAGS}"
1443 # We just finished tests for the build machine, so rename
1444 # the file auto-build.h in the gcc directory.
1445 mv auto-host.h ../auto-build.h
1448 build_auto=auto-build.h
1450 AC_SUBST(build_subdir)
1452 tm_file="${tm_file} defaults.h"
1453 tm_p_file="${tm_p_file} tm-preds.h"
1454 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1455 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1456 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1457 # put this back in temporarily.
1458 xm_file="auto-host.h ansidecl.h ${xm_file}"
1465 # Compile in configure arguments.
1466 if test -f configargs.h ; then
1467 # Being re-configured.
1468 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1469 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1471 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1474 # Double all backslashes and backslash all quotes to turn
1475 # gcc_config_arguments into a C string.
1476 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1477 $gcc_config_arguments
1479 gcc_config_arguments_str=`cat conftest.out`
1482 cat > configargs.h <<EOF
1483 /* Generated automatically. */
1484 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1485 static const char thread_model[] = "$thread_file";
1487 static const struct {
1488 const char *name, *value;
1489 } configure_default_options[] = $configure_default_options;
1494 gcc_BASEVER=`cat $srcdir/BASE-VER`
1495 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1496 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1497 if test -f $srcdir/REVISION ; then
1498 gcc_REVISION=`cat $srcdir/REVISION`
1502 cat > plugin-version.h <<EOF
1503 #include "configargs.h"
1505 static char basever[] = "$gcc_BASEVER";
1506 static char datestamp[] = "$gcc_DATESTAMP";
1507 static char devphase[] = "$gcc_DEVPHASE";
1508 static char revision[] = "$gcc_REVISION";
1510 /* FIXME plugins: We should make the version information more precise.
1511 One way to do is to add a checksum. */
1513 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1515 configuration_arguments};
1519 # Internationalization
1520 ZW_GNU_GETTEXT_SISTER_DIR
1522 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1523 # -liconv on the link line twice.
1524 case "$LIBINTL" in *$LIBICONV*)
1528 AC_ARG_ENABLE(secureplt,
1529 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1532 AC_ARG_ENABLE(leading-mingw64-underscores,
1533 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1534 [Enable leading underscores on 64 bit mingw targets]),
1536 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1537 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1538 [Define if we should use leading underscore on 64 bit mingw targets])])
1541 [ --enable-cld enable -mcld by default for 32bit x86], [],
1544 AC_ARG_ENABLE(frame-pointer,
1545 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1548 linux* | darwin[[8912]]*)
1549 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1551 enable_frame_pointer=no
1554 enable_frame_pointer=yes
1559 # Windows32 Registry support for specifying GCC installation paths.
1560 AC_ARG_ENABLE(win32-registry,
1561 [ --disable-win32-registry
1562 disable lookup of installation paths in the
1563 Registry on Windows hosts
1564 --enable-win32-registry enable registry lookup (default)
1565 --enable-win32-registry=KEY
1566 use KEY instead of GCC version as the last portion
1567 of the registry key],,)
1570 win32 | pe | cygwin* | mingw32* | uwin*)
1571 if test "x$enable_win32_registry" != xno; then
1572 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1575 if test "x$enable_win32_registry" != xno; then
1576 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1577 [Define to 1 if installation paths should be looked up in the Windows
1578 Registry. Ignored on non-Windows hosts.])
1580 if test "x$enable_win32_registry" != xyes \
1581 && test "x$enable_win32_registry" != x; then
1582 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1583 [Define to be the last component of the Windows registry key under which
1584 to look for installation paths. The full key used will be
1585 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1586 The default is the GCC version number.])
1592 # Get an absolute path to the GCC top-level source directory
1593 holddir=`${PWDCMD-pwd}`
1595 topdir=`${PWDCMD-pwd}`
1598 # Conditionalize the makefile for this host machine.
1600 for f in ${host_xmake_file}
1602 if test -f ${srcdir}/config/$f
1604 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1608 # Conditionalize the makefile for this target machine.
1610 for f in ${tmake_file}
1612 if test -f ${srcdir}/config/$f
1614 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1617 tmake_file="${tmake_file_}"
1619 out_object_file=`basename $out_file .c`.o
1621 tm_file_list="options.h"
1622 tm_include_list="options.h insn-constants.h"
1623 for f in $tm_file; do
1626 f=`echo $f | sed 's/^..//'`
1627 tm_file_list="${tm_file_list} $f"
1628 tm_include_list="${tm_include_list} $f"
1631 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1632 tm_include_list="${tm_include_list} $f"
1635 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1636 tm_include_list="${tm_include_list} config/$f"
1643 for f in $tm_p_file; do
1646 tm_p_file_list="${tm_p_file_list} $f"
1647 tm_p_include_list="${tm_p_include_list} $f"
1650 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1651 tm_p_include_list="${tm_p_include_list} config/$f"
1657 for f in $xm_file; do
1660 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1661 xm_include_list="${xm_include_list} $f"
1664 xm_file_list="${xm_file_list} $f"
1665 xm_include_list="${xm_include_list} $f"
1668 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1669 xm_include_list="${xm_include_list} config/$f"
1675 host_xm_include_list=
1676 for f in $host_xm_file; do
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1680 host_xm_include_list="${host_xm_include_list} $f"
1683 host_xm_file_list="${host_xm_file_list} $f"
1684 host_xm_include_list="${host_xm_include_list} $f"
1687 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1688 host_xm_include_list="${host_xm_include_list} config/$f"
1694 for f in $build_xm_file; do
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1698 build_xm_include_list="${build_xm_include_list} $f"
1700 auto-build.h | auto-host.h )
1701 build_xm_file_list="${build_xm_file_list} $f"
1702 build_xm_include_list="${build_xm_include_list} $f"
1705 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1706 build_xm_include_list="${build_xm_include_list} config/$f"
1711 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1712 # cross-compiler which does not use the native headers and libraries.
1713 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1714 CROSS= AC_SUBST(CROSS)
1715 ALL=all.internal AC_SUBST(ALL)
1716 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1718 if test "x$with_build_sysroot" != x; then
1719 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1721 # This value is used, even on a native system, because
1722 # CROSS_SYSTEM_HEADER_DIR is just
1723 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1724 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1727 if test x$host != x$target
1729 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1731 SYSTEM_HEADER_DIR=$build_system_header_dir
1732 case "$host","$target" in
1733 # Darwin crosses can use the host system's libraries and headers,
1734 # because of the fat library support. Of course, it must be the
1735 # same version of Darwin on both sides. Allow the user to
1736 # just say --target=foo-darwin without a version number to mean
1737 # "the version on this system".
1738 *-*-darwin*,*-*-darwin*)
1739 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1740 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1741 if test $hostos = $targetos -o $targetos = darwin ; then
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1748 i?86-*-*,x86_64-*-* \
1749 | powerpc*-*-*,powerpc64*-*-*)
1750 CROSS="$CROSS -DNATIVE_CROSS" ;;
1755 if test "x$with_headers" = x; then
1762 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1763 SYSTEM_HEADER_DIR=$build_system_header_dir
1766 # If this is a cross-compiler that does not
1767 # have its own set of headers then define
1770 # If this is using newlib, without having the headers available now,
1771 # then define inhibit_libc in LIBGCC2_CFLAGS.
1772 # This prevents libgcc2 from containing any code which requires libc
1774 : ${inhibit_libc=false}
1775 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1776 test x$with_newlib = xyes ; } &&
1777 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1780 AC_SUBST(inhibit_libc)
1782 # When building gcc with a cross-compiler, we need to adjust things so
1783 # that the generator programs are still built with the native compiler.
1784 # Also, we cannot run fixincludes.
1786 # These are the normal (build=host) settings:
1787 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1788 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1789 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1790 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1792 # And these apply if build != host, or we are generating coverage data
1793 if test x$build != x$host || test "x$coverage_flags" != x
1795 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1796 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1799 # Expand extra_headers to include complete path.
1800 # This substitutes for lots of t-* files.
1802 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1803 for file in ${extra_headers} ; do
1804 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1807 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1808 if test x"$use_gcc_tgmath" = xyes
1809 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1812 # Define collect2 in Makefile.
1813 case $host_can_use_collect2 in
1815 *) collect2='collect2$(exeext)' ;;
1817 AC_SUBST([collect2])
1819 # Add a definition of USE_COLLECT2 if system wants one.
1820 case $use_collect2 in
1821 no) use_collect2= ;;
1824 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1825 xm_defines="${xm_defines} USE_COLLECT2"
1826 case $host_can_use_collect2 in
1828 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1834 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1835 [Define to the name of the LTO plugin DSO that must be
1836 passed to the linker's -plugin=LIB option.])
1838 # ---------------------------
1839 # Assembler & linker features
1840 # ---------------------------
1842 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1843 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1844 # However when ld-new is first executed from the build tree, libtool will
1845 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1846 # to the build tree. While doing this we need to use the previous-stage
1847 # linker, or we have an infinite loop. The presence of a shell script as
1848 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1849 # the gcc/collect-ld script. So we need to know how libtool works, or
1850 # exec-tool will fail.
1852 m4_defun([_LT_CONFIG_COMMANDS], [])
1855 AC_SUBST(enable_fast_install)
1857 # Identify the assembler which will work hand-in-glove with the newly
1858 # built GCC, so that we can examine its features. This is the assembler
1859 # which will be driven by the driver program.
1861 # If build != host, and we aren't building gas in-tree, we identify a
1862 # build->target assembler and hope that it will have the same features
1863 # as the host->target assembler we'll be using.
1864 gcc_cv_gas_major_version=
1865 gcc_cv_gas_minor_version=
1866 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1868 m4_pattern_allow([AS_FOR_TARGET])dnl
1869 AS_VAR_SET_IF(gcc_cv_as,, [
1870 if test -x "$DEFAULT_ASSEMBLER"; then
1871 gcc_cv_as="$DEFAULT_ASSEMBLER"
1872 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1873 && test -f ../gas/Makefile \
1874 && test x$build = x$host; then
1875 gcc_cv_as=../gas/as-new$build_exeext
1876 elif test -x as$build_exeext; then
1877 # Build using assembler in the current directory.
1878 gcc_cv_as=./as$build_exeext
1879 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1880 gcc_cv_as="$AS_FOR_TARGET"
1882 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1885 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1886 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1887 case "$ORIGINAL_AS_FOR_TARGET" in
1888 ./as | ./as$build_exeext) ;;
1889 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1892 AC_MSG_CHECKING(what assembler to use)
1893 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1894 # Single tree build which includes gas. We want to prefer it
1895 # over whatever linker top-level may have detected, since
1896 # we'll use what we're building after installation anyway.
1897 AC_MSG_RESULT(newly built gas)
1899 _gcc_COMPUTE_GAS_VERSION
1900 in_tree_gas_is_elf=no
1901 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1902 || (grep 'obj_format = multi' ../gas/Makefile \
1903 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1905 in_tree_gas_is_elf=yes
1908 AC_MSG_RESULT($gcc_cv_as)
1912 # Identify the linker which will work hand-in-glove with the newly
1913 # built GCC, so that we can examine its features. This is the linker
1914 # which will be driven by the driver program.
1916 # If build != host, and we aren't building gas in-tree, we identify a
1917 # build->target linker and hope that it will have the same features
1918 # as the host->target linker we'll be using.
1919 gcc_cv_gld_major_version=
1920 gcc_cv_gld_minor_version=
1921 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1922 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1924 AS_VAR_SET_IF(gcc_cv_ld,, [
1925 if test -x "$DEFAULT_LINKER"; then
1926 gcc_cv_ld="$DEFAULT_LINKER"
1927 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1928 && test -f ../ld/Makefile \
1929 && test x$build = x$host; then
1930 gcc_cv_ld=../ld/ld-new$build_exeext
1931 elif test -x collect-ld$build_exeext; then
1932 # Build using linker in the current directory.
1933 gcc_cv_ld=./collect-ld$build_exeext
1934 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1935 gcc_cv_ld="$LD_FOR_TARGET"
1937 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1940 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1941 PLUGIN_LD=`basename $gcc_cv_ld`
1942 AC_ARG_WITH(plugin-ld,
1943 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1944 [if test x"$withval" != x; then
1945 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1946 PLUGIN_LD="$withval"
1948 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1949 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1951 # Check to see if we are using gold instead of ld
1952 AC_MSG_CHECKING(whether we are using gold)
1954 if test x$gcc_cv_ld != x; then
1955 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1956 | grep "GNU gold" > /dev/null; then
1960 AC_MSG_RESULT($ld_is_gold)
1962 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1963 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1964 case "$ORIGINAL_LD_FOR_TARGET" in
1965 ./collect-ld | ./collect-ld$build_exeext) ;;
1966 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1969 AC_MSG_CHECKING(what linker to use)
1970 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1971 # Single tree build which includes ld. We want to prefer it
1972 # over whatever linker top-level may have detected, since
1973 # we'll use what we're building after installation anyway.
1974 AC_MSG_RESULT(newly built ld)
1976 in_tree_ld_is_elf=no
1977 if (grep 'EMUL = .*elf' ../ld/Makefile \
1978 || grep 'EMUL = .*linux' ../ld/Makefile \
1979 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1980 in_tree_ld_is_elf=yes
1982 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
1985 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1986 if test x$gcc_cv_gld_version != x; then
1990 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1991 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1994 AC_MSG_RESULT($gcc_cv_ld)
1998 # Figure out what nm we will be using.
1999 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2000 AS_VAR_SET_IF(gcc_cv_nm,, [
2001 if test -f $gcc_cv_binutils_srcdir/configure.in \
2002 && test -f ../binutils/Makefile \
2003 && test x$build = x$host; then
2004 gcc_cv_nm=../binutils/nm-new$build_exeext
2005 elif test -x nm$build_exeext; then
2006 gcc_cv_nm=./nm$build_exeext
2007 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2008 gcc_cv_nm="$NM_FOR_TARGET"
2010 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2013 AC_MSG_CHECKING(what nm to use)
2014 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2015 # Single tree build which includes binutils.
2016 AC_MSG_RESULT(newly built nm)
2019 AC_MSG_RESULT($gcc_cv_nm)
2023 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2024 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2025 case "$ORIGINAL_NM_FOR_TARGET" in
2026 ./nm | ./nm$build_exeext) ;;
2027 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2031 # Figure out what objdump we will be using.
2032 AS_VAR_SET_IF(gcc_cv_objdump,, [
2033 if test -f $gcc_cv_binutils_srcdir/configure.in \
2034 && test -f ../binutils/Makefile \
2035 && test x$build = x$host; then
2036 # Single tree build which includes binutils.
2037 gcc_cv_objdump=../binutils/objdump$build_exeext
2038 elif test -x objdump$build_exeext; then
2039 gcc_cv_objdump=./objdump$build_exeext
2040 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2041 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2043 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2046 AC_MSG_CHECKING(what objdump to use)
2047 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2048 # Single tree build which includes binutils.
2049 AC_MSG_RESULT(newly built objdump)
2050 elif test x$gcc_cv_objdump = x; then
2051 AC_MSG_RESULT(not found)
2053 AC_MSG_RESULT($gcc_cv_objdump)
2056 # Figure out what readelf we will be using.
2057 AS_VAR_SET_IF(gcc_cv_readelf,, [
2058 if test -f $gcc_cv_binutils_srcdir/configure.in \
2059 && test -f ../binutils/Makefile \
2060 && test x$build = x$host; then
2061 # Single tree build which includes binutils.
2062 gcc_cv_readelf=../binutils/readelf$build_exeext
2063 elif test -x readelf$build_exeext; then
2064 gcc_cv_readelf=./readelf$build_exeext
2066 AC_PATH_PROG(gcc_cv_readelf, readelf)
2069 AC_MSG_CHECKING(what readelf to use)
2070 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2071 # Single tree build which includes binutils.
2072 AC_MSG_RESULT(newly built readelf)
2073 elif test x$gcc_cv_readelf = x; then
2074 AC_MSG_RESULT(not found)
2076 AC_MSG_RESULT($gcc_cv_readelf)
2079 # Figure out what assembler alignment features are present.
2080 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2084 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2085 [Define if your assembler supports .balign and .p2align.])])
2087 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2090 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2091 [Define if your assembler supports specifying the maximum number
2092 of bytes to skip when using the GAS .p2align command.])])
2094 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2097 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2098 [Define if your assembler supports .literal16.])])
2100 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2102 [conftest_label1: .word 0
2104 conftest_label2: .word 0
2106 [if test x$gcc_cv_nm != x; then
2107 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2108 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2109 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2111 else gcc_cv_as_subsection_m1=yes
2113 rm -f conftest.nm1 conftest.nm2
2115 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2116 [Define if your assembler supports .subsection and .subsection -1 starts
2117 emitting at the beginning of your section.])])
2119 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2122 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2124 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2126 [ .weakref foobar, barfnot],,
2127 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2129 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2132 .NSUBSPA $CODE$,COMDAT],,
2133 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2135 # .hidden needs to be supported in both the assembler and the linker,
2136 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2137 # This is irritatingly difficult to feature test for; we have to check the
2138 # date string after the version number. If we've got an in-tree
2139 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2141 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2142 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2146 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2147 # STV_HIDDEN, so disable .hidden support if so.
2150 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2151 cat > conftest.s <<EOF
2158 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2159 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2160 grep '\.hidden default' > /dev/null; then
2163 gcc_cv_as_hidden=yes
2166 # Assume bug is present if objdump is missing.
2171 gcc_cv_as_hidden=yes
2175 # gnu_indirect_function type is an extension proposed at
2176 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2177 # selection of function implementation
2178 AC_ARG_ENABLE(gnu-indirect-function,
2179 [AS_HELP_STRING([--enable-gnu-indirect-function],
2180 [enable the use of the @gnu_indirect_function to glibc systems])],
2181 [case $enable_gnu_indirect_function in
2183 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2184 Valid choices are 'yes' and 'no'.]) ;;
2186 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2187 if test x$enable_gnu_indirect_function = xyes; then
2188 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2189 [Define if your system supports gnu indirect functions.])
2193 if test $in_tree_ld != yes ; then
2194 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2195 if test x"$ld_is_gold" = xyes; then
2196 gcc_cv_ld_hidden=yes
2197 elif echo "$ld_ver" | grep GNU > /dev/null; then
2198 ld_vers=`echo $ld_ver | sed -n \
2199 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2200 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2201 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2202 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2203 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2208 # Solaris 2 ld -V output looks like this for a regular version:
2210 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2212 # but test versions add stuff at the end:
2214 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2216 ld_ver=`$gcc_cv_ld -V 2>&1`
2217 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2218 ld_vers=`echo $ld_ver | sed -n \
2219 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2220 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2221 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2229 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2230 [[if test $in_tree_ld = yes ; then
2232 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2233 && test $in_tree_ld_is_elf = yes; then
2234 gcc_cv_ld_hidden=yes
2237 gcc_cv_ld_hidden=yes
2238 if echo "$ld_ver" | grep GNU > /dev/null; then
2239 if test 0"$ld_date" -lt 20020404; then
2240 if test -n "$ld_date"; then
2241 # If there was date string, but was earlier than 2002-04-04, fail
2243 elif test -z "$ld_vers"; then
2244 # If there was no date string nor ld version number, something is wrong
2247 test -z "$ld_vers_patch" && ld_vers_patch=0
2248 if test "$ld_vers_major" -lt 2; then
2250 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2251 gcc_cv_ld_hidden="no"
2252 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2259 hppa64*-*-hpux* | ia64*-*-hpux*)
2260 gcc_cv_ld_hidden=yes
2263 # .hidden support was backported to Solaris 8, starting with ld
2265 if test "$ld_vers_minor" -ge 276; then
2266 gcc_cv_ld_hidden=yes
2271 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2272 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2273 # .symbolic was only added in Solaris 9 12/02.
2274 gcc_cv_ld_hidden=yes
2282 libgcc_visibility=no
2283 AC_SUBST(libgcc_visibility)
2284 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2285 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2286 libgcc_visibility=yes
2287 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2288 [Define if your assembler and linker support .hidden.])
2291 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2292 gcc_cv_ld_ro_rw_mix=unknown
2293 if test $in_tree_ld = yes ; then
2294 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2295 && test $in_tree_ld_is_elf = yes; then
2296 gcc_cv_ld_ro_rw_mix=read-write
2298 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2299 echo '.section myfoosect, "a"' > conftest1.s
2300 echo '.section myfoosect, "aw"' > conftest2.s
2301 echo '.byte 1' >> conftest2.s
2302 echo '.section myfoosect, "a"' > conftest3.s
2303 echo '.byte 0' >> conftest3.s
2304 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2305 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2306 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2307 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2308 conftest2.o conftest3.o > /dev/null 2>&1; then
2309 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2310 | sed -e '/myfoosect/!d' -e N`
2311 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2312 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2313 gcc_cv_ld_ro_rw_mix=read-only
2315 gcc_cv_ld_ro_rw_mix=read-write
2320 rm -f conftest.* conftest[123].*
2323 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2324 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2325 [Define if your linker links a mix of read-only
2326 and read-write sections into a read-write section.])
2328 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2330 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2331 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2339 [[# GAS versions before 2.11 do not support uleb128,
2340 # despite appearing to.
2341 # ??? There exists an elf-specific test that will crash
2342 # the assembler. Perhaps it's better to figure out whether
2343 # arbitrary sections are supported and try the test.
2344 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2345 if echo "$as_ver" | grep GNU > /dev/null; then
2346 as_vers=`echo $as_ver | sed -n \
2347 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2348 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2349 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2350 if test $as_major -eq 2 && test $as_minor -lt 11
2352 else gcc_cv_as_leb128=yes
2355 [AC_DEFINE(HAVE_AS_LEB128, 1,
2356 [Define if your assembler supports .sleb128 and .uleb128.])])
2358 # Check if we have assembler support for unwind directives.
2359 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2366 .cfi_escape 1, 2, 3, 4, 5
2370 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2371 # read-only and read-write sections, we need to make sure that the
2372 # assembler used emits read-write .eh_frame sections.
2373 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2374 if test "x$gcc_cv_objdump" != x; then
2375 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2376 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2377 gcc_cv_as_cfi_directive=no
2380 i?86-*-solaris2.1[[0-9]]*)
2381 # On Solaris/x86, make sure that GCC and gas agree on using
2382 # read-only .eh_frame sections for 64-bit.
2383 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2384 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2385 sed -e /.eh_frame/!d -e N | \
2386 grep READONLY > /dev/null; then
2387 gcc_cv_as_cfi_directive=yes
2389 gcc_cv_as_cfi_directive=no
2393 gcc_cv_as_cfi_directive=yes
2398 # no objdump, err on the side of caution
2399 gcc_cv_as_cfi_directive=no
2402 gcc_cv_as_cfi_directive=yes
2406 gcc_cv_as_cfi_directive=yes
2409 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2410 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2414 .cfi_adjust_cfa_offset 64
2416 .cfi_adjust_cfa_offset 128
2419 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2420 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2421 gcc_cv_as_cfi_advance_working=yes
2425 # no objdump, err on the side of caution
2426 gcc_cv_as_cfi_advance_working=no
2428 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2429 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2430 [`if test $gcc_cv_as_cfi_directive = yes \
2431 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2432 [Define 0/1 if your assembler supports CFI directives.])
2434 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2435 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2436 gcc_cv_as_cfi_personality_directive, ,,
2439 .cfi_personality 0, symbol
2441 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2442 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2443 then echo 1; else echo 0; fi`],
2444 [Define 0/1 if your assembler supports .cfi_personality.])
2446 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2447 gcc_cv_as_cfi_sections_directive, ,,
2449 .cfi_sections .debug_frame, .eh_frame
2453 win32 | pe | cygwin* | mingw32* | uwin*)
2454 # Need to check that we generated the correct relocation for the
2455 # .debug_frame section. This was fixed for binutils 2.21.
2456 gcc_cv_as_cfi_sections_directive=no
2457 if test "x$gcc_cv_objdump" != x; then
2458 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2459 grep secrel > /dev/null; then
2460 gcc_cv_as_cfi_sections_directive=yes
2465 gcc_cv_as_cfi_sections_directive=yes
2468 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2469 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2470 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2471 then echo 1; else echo 0; fi`],
2472 [Define 0/1 if your assembler supports .cfi_sections.])
2474 # GAS versions up to and including 2.11.0 may mis-optimize
2476 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2484 .section .eh_frame,"aw",@progbits
2486 .4byte .LECIE1-.LSCIE1
2500 .4byte .LEFDE1-.LASFDE1
2502 .4byte .LASFDE1-__FRAME_BEGIN__
2510 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2511 cat > conftest.lit <<EOF
2512 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2513 0010 01000000 12000000 18000000 00000000 ................
2514 0020 08000000 04080000 0044 .........D @&t@
2516 cat > conftest.big <<EOF
2517 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2518 0010 00000001 00000012 00000018 00000000 ................
2519 0020 00000008 04000000 0844 .........D @&t@
2521 # If the assembler didn't choke, and we can objdump,
2522 # and we got the correct data, then succeed.
2523 # The text in the here-document typically retains its unix-style line
2524 # endings, while the output of objdump will use host line endings.
2525 # Therefore, use diff -b for the comparisons.
2526 if test x$gcc_cv_objdump != x \
2527 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2528 | tail -3 > conftest.got \
2529 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2530 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2532 gcc_cv_as_eh_frame=yes
2533 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2534 gcc_cv_as_eh_frame=buggy
2536 # Uh oh, what do we do now?
2537 gcc_cv_as_eh_frame=no
2540 if test $gcc_cv_as_eh_frame = buggy; then
2541 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2542 [Define if your assembler mis-optimizes .eh_frame data.])
2545 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2546 [elf,2,12,0], [--fatal-warnings],
2547 [.section .rodata.str, "aMS", @progbits, 1])
2548 if test $gcc_cv_as_shf_merge = no; then
2549 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2550 [elf,2,12,0], [--fatal-warnings],
2551 [.section .rodata.str, "aMS", %progbits, 1])
2553 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2554 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2555 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2557 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2558 [elf,2,16,0], [--fatal-warnings],
2559 [.section .text,"axG",@progbits,.foo,comdat])
2560 if test $gcc_cv_as_comdat_group = yes; then
2561 gcc_cv_as_comdat_group_percent=no
2563 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2564 [elf,2,16,0], [--fatal-warnings],
2565 [.section .text,"axG",%progbits,.foo,comdat])
2567 if test x"$ld_is_gold" = xyes; then
2569 elif test $in_tree_ld = yes ; then
2571 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2572 && test $in_tree_ld_is_elf = yes; then
2575 elif echo "$ld_ver" | grep GNU > /dev/null; then
2577 if test 0"$ld_date" -lt 20050308; then
2578 if test -n "$ld_date"; then
2579 # If there was date string, but was earlier than 2005-03-08, fail
2581 elif test "$ld_vers_major" -lt 2; then
2583 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2590 *-*-solaris2.1[1-9]*)
2591 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2592 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2595 # FIXME: Maybe need to refine later when COMDAT group support with
2596 # Sun as is implemented.
2597 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2604 # Assume linkers other than GNU ld don't support COMDAT group.
2610 # Allow overriding the automatic COMDAT group tests above.
2611 AC_ARG_ENABLE(comdat,
2612 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2613 [comdat_group="$enable_comdat"])
2614 if test $comdat_group = no; then
2615 gcc_cv_as_comdat_group=no
2616 gcc_cv_as_comdat_group_percent=no
2618 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2619 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2620 [Define 0/1 if your assembler and linker support COMDAT groups.])
2622 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2623 gcc_cv_as_discriminator,
2627 .loc 1 1 0 discriminator 1],,
2628 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2629 [Define if your assembler supports the .loc discriminator sub-directive.])])
2631 # Thread-local storage - the check is heavily parameterized.
2640 .section ".tdata","awT",@progbits
2643 ldq $27,__tls_get_addr($29) !literal!1
2644 lda $16,foo($29) !tlsgd!1
2645 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2646 ldq $27,__tls_get_addr($29) !literal!2
2647 lda $16,foo($29) !tlsldm!2
2648 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2649 ldq $1,foo($29) !gotdtprel
2650 ldah $2,foo($29) !dtprelhi
2651 lda $3,foo($2) !dtprello
2652 lda $4,foo($29) !dtprel
2653 ldq $1,foo($29) !gottprel
2654 ldah $2,foo($29) !tprelhi
2655 lda $3,foo($2) !tprello
2656 lda $4,foo($29) !tprel'
2659 tls_as_opt=--fatal-warnings
2661 cris-*-*|crisv32-*-*)
2663 .section ".tdata","awT",@progbits
2670 tls_as_opt=--fatal-warnings
2674 .section ".tdata","awT",@progbits
2686 .section ".tdata","awT",@progbits
2690 addil LT%foo-$tls_gdidx$,gp
2691 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2694 addil LT%foo-$tls_ldidx$,gp
2696 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2697 addil LR%foo-$tls_dtpoff$,%ret0
2698 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2700 addil LT%foo-$tls_ieoff$,gp
2701 ldw RT%foo-$tls_ieoff$(%r1),%t2
2704 addil LR%foo-$tls_leoff$,%t1
2705 ldo RR%foo-$tls_leoff$(%r1),%t2'
2708 tls_as_opt=--fatal-warnings
2712 .section ".tdata","awT",%progbits
2725 i[34567]86-*-solaris2.*)
2727 tga_func=___tls_get_addr
2733 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2735 .section .tdata,"awt",@progbits'
2739 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2740 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2744 .section ".tdata","awT",@progbits'
2747 tls_as_opt="--fatal-warnings"
2749 conftest_s="$conftest_s
2753 leal foo@tlsgd(,%ebx,1), %eax
2754 leal foo@tlsldm(%ebx), %eax
2755 leal foo@dtpoff(%eax), %edx
2756 movl foo@gottpoff(%ebx), %eax
2757 subl foo@gottpoff(%ebx), %eax
2758 addl foo@gotntpoff(%ebx), %eax
2759 movl foo@indntpoff, %eax
2760 movl \$foo@tpoff, %eax
2761 subl \$foo@tpoff, %eax
2762 leal foo@ntpoff(%ecx), %eax"
2766 .section ".tdata","awT",@progbits
2770 leaq foo@TLSGD(%rip), %rdi
2771 leaq foo@TLSLD(%rip), %rdi
2772 leaq foo@DTPOFF(%rax), %rdx
2773 movq foo@GOTTPOFF(%rip), %rax
2774 movq $foo@TPOFF, %rax'
2777 tls_as_opt=--fatal-warnings
2781 .section ".tdata","awT",@progbits
2784 addl r16 = @ltoff(@dtpmod(foo#)), gp
2785 addl r17 = @ltoff(@dtprel(foo#)), gp
2786 addl r18 = @ltoff(@tprel(foo#)), gp
2787 addl r19 = @dtprel(foo#), gp
2788 adds r21 = @dtprel(foo#), r13
2789 movl r23 = @dtprel(foo#)
2790 addl r20 = @tprel(foo#), gp
2791 adds r22 = @tprel(foo#), r13
2792 movl r24 = @tprel(foo#)'
2795 tls_as_opt=--fatal-warnings
2799 .section .tdata,"awT",@progbits
2803 addiu $4, $28, %tlsgd(x)
2804 addiu $4, $28, %tlsldm(x)
2805 lui $4, %dtprel_hi(x)
2806 addiu $4, $4, %dtprel_lo(x)
2807 lw $4, %gottprel(x)($28)
2808 lui $4, %tprel_hi(x)
2809 addiu $4, $4, %tprel_lo(x)'
2812 tls_as_opt='-32 --fatal-warnings'
2816 .section .tdata,"awT",@progbits
2821 move.l x@TLSGD(%a5),%a0
2822 move.l x@TLSLDM(%a5),%a0
2823 move.l x@TLSLDO(%a5),%a0
2824 move.l x@TLSIE(%a5),%a0
2825 move.l x@TLSLE(%a5),%a0'
2828 tls_as_opt='--fatal-warnings'
2832 .section ".tdata","awT",@progbits
2840 addi 3,31,ld0@got@tlsgd
2842 addi 3,31,x1@got@tlsld
2845 addis 9,3,x2@dtprel@ha
2846 addi 9,9,x2@dtprel@l
2847 lwz 9,x3@got@tprel(31)
2850 addis 9,2,x2@tprel@ha
2851 addi 9,9,x2@tprel@l'
2854 tls_as_opt="-a32 --fatal-warnings"
2858 .section ".tdata","awT",@progbits
2866 addi 3,2,ld0@got@tlsgd
2872 addi 3,2,x1@got@tlsld
2878 addis 9,3,x2@dtprel@ha
2879 addi 9,9,x2@dtprel@l
2882 ld 9,x3@got@dtprel(2)
2888 tls_as_opt="-a64 --fatal-warnings"
2892 .section ".tdata","awT",@progbits
2901 l %r1,foo@GOTNTPOFF(%r12)
2902 l %r1,0(%r1):tls_load:foo
2903 bas %r14,0(%r1,%r13):tls_gdcall:foo
2904 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2907 tls_as_opt="-m31 --fatal-warnings"
2911 .section ".tdata","awT",@progbits
2919 lg %r1,foo@GOTNTPOFF(%r12)
2920 larl %r1,foo@INDNTPOFF
2921 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2922 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2925 tls_as_opt="-m64 -Aesame --fatal-warnings"
2927 sh-*-* | sh[34]-*-*)
2929 .section ".tdata","awT",@progbits
2939 tls_as_opt=--fatal-warnings
2943 sparc*-sun-solaris2.*)
2945 tga_func=__tls_get_addr
2951 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2953 .section ".tdata",#alloc,#write,#tls'
2958 .section ".tdata","awT",@progbits'
2961 tls_as_opt="-32 --fatal-warnings"
2963 conftest_s="$conftest_s
2966 sethi %tgd_hi22(foo), %o0
2967 add %o0, %tgd_lo10(foo), %o1
2968 add %l7, %o1, %o0, %tgd_add(foo)
2969 call __tls_get_addr, %tgd_call(foo)
2970 sethi %tldm_hi22(foo), %l1
2971 add %l1, %tldm_lo10(foo), %l2
2972 add %l7, %l2, %o0, %tldm_add(foo)
2973 call __tls_get_addr, %tldm_call(foo)
2974 sethi %tldo_hix22(foo), %l3
2975 xor %l3, %tldo_lox10(foo), %l4
2976 add %o0, %l4, %l5, %tldo_add(foo)
2977 sethi %tie_hi22(foo), %o3
2978 add %o3, %tie_lo10(foo), %o3
2979 ld [%l7 + %o3], %o2, %tie_ld(foo)
2980 add %g7, %o2, %o4, %tie_add(foo)
2981 sethi %tle_hix22(foo), %l1
2982 xor %l1, %tle_lox10(foo), %o5
2983 ld [%g7 + %o5], %o1"
2987 .section ".tdata","awT",@progbits
2990 movi a8, foo@TLSFUNC
2991 movi a10, foo@TLSARG
2992 callx8.tls a8, foo@TLSCALL'
2999 if test "x$enable_tls" = xno ; then
3000 : # TLS explicitly disabled.
3001 elif test "x$enable_tls" = xyes ; then
3002 set_have_as_tls=yes # TLS explicitly enabled.
3003 elif test -z "$tls_first_major"; then
3004 : # If we don't have a check, assume no support.
3006 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3007 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3008 [set_have_as_tls=yes])
3012 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3013 # with TLS support are in use, native TLS cannot work.
3017 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3018 # gld with TLS support are in use, native TLS cannot work.
3021 # TLS was introduced in the Solaris 9 FCS release and backported to
3022 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3023 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3024 # ld and GCC don't support any longer.
3026 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3028 # Check ld and ld.so.1 TLS support.
3029 if echo "$ld_ver" | grep GNU > /dev/null; then
3030 # Assume all interesting versions of GNU ld have TLS support.
3031 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3035 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3037 min_tls_ld_vers_minor=280
3039 # Solaris 8/SPARC ld has TLS support since version 1.272.
3040 sparc*-*-solaris2.8)
3041 min_tls_ld_vers_minor=272
3043 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3045 min_tls_ld_vers_minor=374
3047 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3048 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3049 min_tls_ld_vers_minor=343
3052 if test "$ld_vers_major" -gt 1 || \
3053 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3059 AC_MSG_RESULT($ld_tls_support)
3062 save_LDFLAGS="$LDFLAGS"
3066 AC_MSG_CHECKING(alternate thread library)
3068 # TLS support was backported to Solaris 8 patches, but only lives in
3069 # the alternate thread library which became the default in Solaris 9.
3070 # We want to always use that, irrespective of TLS support.
3072 # Take multilib subdir into account. There's no spec to handle
3073 # this. The 64 symlink exists since Solaris 8.
3074 lwp_dir=/usr/lib/lwp
3075 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3076 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3083 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3084 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3085 [Define to the linker flags to use for -pthread.])
3086 AC_MSG_RESULT($lwp_dir)
3088 AC_MSG_CHECKING(library containing $tga_func)
3089 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3090 # (32-bit x86) only lived in libthread, so check for that. Keep
3091 # set_have_as_tls if found, disable if not.
3092 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3093 # Clear LIBS if we cannot support TLS.
3094 if test $set_have_as_tls = no; then
3097 # Always define LIB_TLS_SPEC, even without TLS support.
3098 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3099 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3100 AC_MSG_RESULT($LIBS)
3103 LDFLAGS="$save_LDFLAGS"
3106 if test $set_have_as_tls = yes ; then
3107 AC_DEFINE(HAVE_AS_TLS, 1,
3108 [Define if your assembler and linker support thread-local storage.])
3111 # Target-specific assembler checks.
3113 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3114 gcc_cv_ld_static_dynamic=no
3115 if test $in_tree_ld = yes ; then
3116 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3117 gcc_cv_ld_static_dynamic=yes
3119 elif test x$gcc_cv_ld != x; then
3120 # Check if linker supports -Bstatic/-Bdynamic option
3121 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3122 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3123 gcc_cv_ld_static_dynamic=yes
3126 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3127 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3128 [Define if your linker supports -Bstatic/-Bdynamic option.])
3130 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3132 if test x"$demangler_in_ld" = xyes; then
3133 AC_MSG_CHECKING(linker --demangle support)
3134 gcc_cv_ld_demangle=no
3135 if test $in_tree_ld = yes; then
3136 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3137 gcc_cv_ld_demangle=yes
3139 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3140 # Check if the GNU linker supports --demangle option
3141 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3142 gcc_cv_ld_demangle=yes
3145 if test x"$gcc_cv_ld_demangle" = xyes; then
3146 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3147 [Define if your linker supports --demangle option.])
3149 AC_MSG_RESULT($gcc_cv_ld_demangle)
3153 # All TARGET_ABI_OSF targets.
3154 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3155 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3156 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3159 extbl $3, $2, $3 !lituse_bytoff!1
3160 ldq $2, a($29) !literal!1
3161 ldq $4, b($29) !literal!2
3162 ldq_u $3, 0($2) !lituse_base!1
3163 ldq $27, f($29) !literal!5
3164 jsr $26, ($27), f !lituse_jsr!5
3165 ldah $29, 0($26) !gpdisp!3
3166 lda $0, c($29) !gprel
3167 ldah $1, d($29) !gprelhigh
3168 lda $1, d($1) !gprellow
3169 lda $29, 0($29) !gpdisp!3],,
3170 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3171 [Define if your assembler supports explicit relocations.])])
3172 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3173 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3176 ldq $27, a($29) !literal!1
3177 jsr $26, ($27), a !lituse_jsrdirect!1],,
3178 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3179 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3183 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3184 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3185 [-no-mul-bug-abort], [.text],,
3186 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3187 [Define if your assembler supports the -no-mul-bug-abort option.])])
3191 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3192 [.register %g2, #scratch],,
3193 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3194 [Define if your assembler supports .register.])])
3196 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3198 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3199 [Define if your assembler supports -relax option.])])
3201 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3202 gcc_cv_as_sparc_gotdata_op,,
3208 sethi %gdop_hix22(foo), %g1
3209 xor %g1, %gdop_lox10(foo), %g1
3210 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3211 [if test x$gcc_cv_ld != x \
3212 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3213 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3214 if test x$gcc_cv_objdump != x; then
3215 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3216 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3217 gcc_cv_as_sparc_gotdata_op=no
3219 gcc_cv_as_sparc_gotdata_op=yes
3223 gcc_cv_as_sparc_gotdata_op=yes
3227 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3228 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3230 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3231 gcc_cv_as_sparc_ua_pcrel,,
3239 .uaword %r_disp32(foo)],
3240 [if test x$gcc_cv_ld != x \
3241 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3242 gcc_cv_as_sparc_ua_pcrel=yes
3245 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3246 [Define if your assembler and linker support unaligned PC relative relocs.])
3248 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3249 gcc_cv_as_sparc_ua_pcrel_hidden,,
3254 .uaword %r_disp32(foo)
3255 .byte 0x32, 0x33, 0x34
3260 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3261 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3262 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3263 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3264 if $gcc_cv_objdump -R conftest 2> /dev/null \
3265 | grep 'DISP32' > /dev/null 2>&1; then
3268 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3272 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3273 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3274 ]) # unaligned pcrel relocs
3276 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3277 gcc_cv_as_sparc_offsetable_lo10,,
3280 or %g1, %lo(ab) + 12, %g1
3281 or %g1, %lo(ab + 12), %g1],
3282 [if test x$gcc_cv_objdump != x \
3283 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3284 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3285 gcc_cv_as_sparc_offsetable_lo10=yes
3287 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3288 [Define if your assembler supports offsetable %lo().])])
3292 i[34567]86-*-* | x86_64-*-*)
3296 # Full C++ conformance when using a shared libstdc++-v3 requires some
3297 # support from the Cygwin DLL, which in more recent versions exports
3298 # wrappers to aid in interposing and redirecting operators new, delete,
3299 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3300 # are configuring for a version of Cygwin that exports the wrappers.
3301 if test x$host = x$target; then
3302 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3304 # Can't check presence of libc functions during cross-compile, so
3305 # we just have to assume we're building for an up-to-date target.
3306 gcc_ac_cygwin_dll_wrappers=yes
3308 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3309 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3310 [Define if you want to generate code by default that assumes that the
3311 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3314 cygwin* | pe | mingw32*)
3315 # Recent binutils allows the three-operand form of ".comm" on PE. This
3316 # definition is used unconditionally to initialise the default state of
3317 # the target option variable that governs usage of the feature.
3318 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3319 [2,19,52],,[.comm foo,1,32])
3320 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3321 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3322 [Define if your assembler supports specifying the alignment
3323 of objects allocated using the GAS .comm command.])
3324 # Used for DWARF 2 in PE
3325 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3326 gcc_cv_as_ix86_pe_secrel32,
3332 [if test x$gcc_cv_ld != x \
3333 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3334 gcc_cv_as_ix86_pe_secrel32=yes
3337 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3338 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3339 # Test if the assembler supports the extended form of the .section
3340 # directive that specifies section alignment. LTO support uses this,
3341 # but normally only after installation, so we warn but don't fail the
3342 # configure if LTO is enabled but the assembler does not support it.
3343 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3344 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3345 if test x$gcc_cv_as_section_has_align != xyes; then
3346 case ",$enable_languages," in
3348 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3355 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3356 gcc_cv_as_ix86_filds,,,
3357 [filds mem; fists mem],,
3358 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3359 [Define if your assembler uses filds and fists mnemonics.])])
3361 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3362 gcc_cv_as_ix86_fildq,,,
3363 [fildq mem; fistpq mem],,
3364 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3365 [Define if your assembler uses fildq and fistq mnemonics.])])
3367 gcc_GAS_CHECK_FEATURE([cmov syntax],
3368 gcc_cv_as_ix86_cmov_sun_syntax,,,
3369 [cmovl.l %edx, %eax],,
3370 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3371 [Define if your assembler supports the Sun syntax for cmov.])])
3373 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3374 gcc_cv_as_ix86_ffreep,,,
3376 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3377 [Define if your assembler supports the ffreep mnemonic.])])
3379 gcc_GAS_CHECK_FEATURE([.quad directive],
3380 gcc_cv_as_ix86_quad,,,
3382 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3383 [Define if your assembler supports the .quad directive.])])
3385 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3386 gcc_cv_as_ix86_sahf,,,
3389 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3390 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3392 gcc_GAS_CHECK_FEATURE([swap suffix],
3393 gcc_cv_as_ix86_swap,,,
3394 [movl.s %esp, %ebp],,
3395 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3396 [Define if your assembler supports the swap suffix.])])
3398 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3399 gcc_cv_as_ix86_diff_sect_delta,,,
3407 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3408 [Define if your assembler supports the subtraction of symbols in different sections.])])
3410 # These two are used unconditionally by i386.[ch]; it is to be defined
3411 # to 1 if the feature is present, 0 otherwise.
3412 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3413 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3419 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3420 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3421 [Define true if the assembler supports '.long foo@GOTOFF'.])
3423 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3424 gcc_cv_as_ix86_rep_lock_prefix,,,
3426 lock addl %edi, (%eax,%esi)
3427 lock orl $0, (%esp)],,
3428 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3429 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3434 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3435 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3437 addl r15 = @ltoffx(x#), gp
3439 ld8.mov r16 = [[r15]], x#],,
3440 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3441 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3447 *-*-aix*) conftest_s=' .machine "pwr5"
3451 gcc_GAS_CHECK_FEATURE([.machine directive support],
3452 gcc_cv_as_machine_directive,,,
3453 [ .machine ppc7400])
3454 if test x$gcc_cv_as_machine_directive != xyes; then
3455 echo "*** This target requires an assembler supporting \".machine\"" >&2
3456 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3457 test x$build = x$target && exit 1
3461 *) conftest_s=' .machine power4
3466 gcc_GAS_CHECK_FEATURE([mfcr field support],
3467 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3469 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3470 [Define if your assembler supports mfcr field.])])
3473 *-*-aix*) conftest_s=' .machine "pwr5"
3476 *) conftest_s=' .machine power5
3481 gcc_GAS_CHECK_FEATURE([popcntb support],
3482 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3484 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3485 [Define if your assembler supports popcntb field.])])
3488 *-*-aix*) conftest_s=' .machine "pwr5x"
3491 *) conftest_s=' .machine power5
3496 gcc_GAS_CHECK_FEATURE([fp round support],
3497 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3499 [AC_DEFINE(HAVE_AS_FPRND, 1,
3500 [Define if your assembler supports fprnd.])])
3503 *-*-aix*) conftest_s=' .machine "pwr6"
3506 *) conftest_s=' .machine power6
3511 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3512 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3514 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3515 [Define if your assembler supports mffgpr and mftgpr.])])
3518 *-*-aix*) conftest_s=' .csect .text[[PR]]
3520 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3524 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3525 *) conftest_s=' .text
3527 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3530 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3531 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3533 [AC_DEFINE(HAVE_AS_REL16, 1,
3534 [Define if your assembler supports R_PPC_REL16 relocs.])])
3537 *-*-aix*) conftest_s=' .machine "pwr6"
3540 *) conftest_s=' .machine power6
3545 gcc_GAS_CHECK_FEATURE([compare bytes support],
3546 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3548 [AC_DEFINE(HAVE_AS_CMPB, 1,
3549 [Define if your assembler supports cmpb.])])
3552 *-*-aix*) conftest_s=' .machine "pwr6"
3555 *) conftest_s=' .machine power6
3560 gcc_GAS_CHECK_FEATURE([decimal float support],
3561 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3563 [AC_DEFINE(HAVE_AS_DFP, 1,
3564 [Define if your assembler supports DFP instructions.])])
3567 *-*-aix*) conftest_s=' .machine "pwr7"
3570 *) conftest_s=' .machine power7
3575 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3576 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3578 [AC_DEFINE(HAVE_AS_VSX, 1,
3579 [Define if your assembler supports VSX instructions.])])
3582 *-*-aix*) conftest_s=' .machine "pwr7"
3585 *) conftest_s=' .machine power7
3590 gcc_GAS_CHECK_FEATURE([popcntd support],
3591 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3593 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3594 [Define if your assembler supports POPCNTD instructions.])])
3597 *-*-aix*) conftest_s=' .csect .text[[PR]]
3599 *) conftest_s=' .text
3603 gcc_GAS_CHECK_FEATURE([lwsync support],
3604 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3606 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3607 [Define if your assembler supports LWSYNC instructions.])])
3610 *-*-aix*) conftest_s=' .machine "476"
3613 *) conftest_s=' .machine "476"
3618 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3619 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3621 [AC_DEFINE(HAVE_AS_DCI, 1,
3622 [Define if your assembler supports the DCI/ICI instructions.])])
3624 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3625 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3626 [.gnu_attribute 4,1],,
3627 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3628 [Define if your assembler supports .gnu_attribute.])])
3630 gcc_GAS_CHECK_FEATURE([tls marker support],
3631 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3632 [ bl __tls_get_addr(x@tlsgd)],,
3633 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3634 [Define if your assembler supports arg info for __tls_get_addr.])])
3638 gcc_GAS_CHECK_FEATURE([.ref support],
3639 gcc_cv_as_aix_ref, [2.21.0],,
3640 [ .csect stuff[[rw]]
3646 [AC_DEFINE(HAVE_AS_REF, 1,
3647 [Define if your assembler supports .ref])])
3653 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3654 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3655 [ lw $4,%gp_rel(foo)($4)],,
3656 [if test x$target_cpu_default = x
3657 then target_cpu_default=MASK_EXPLICIT_RELOCS
3658 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3660 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3661 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3662 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3663 [Define if the assembler understands -mno-shared.])])
3665 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3666 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3667 [.gnu_attribute 4,1],,
3668 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3669 [Define if your assembler supports .gnu_attribute.])])
3671 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3672 gcc_cv_as_mips_dtprelword, [2,18,0],,
3673 [.section .tdata,"awT",@progbits
3677 .dtprelword x+0x8000],,
3678 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3679 [Define if your assembler supports .dtprelword.])])
3681 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3682 gcc_cv_as_mips_dspr1_mult,,,
3692 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3693 [Define if your assembler supports DSPR1 mult.])])
3695 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3696 gcc_cv_as_ld_jalr_reloc=no
3697 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3698 if test $in_tree_ld = yes ; then
3699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3700 && test $in_tree_ld_is_elf = yes; then
3701 gcc_cv_as_ld_jalr_reloc=yes
3703 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3704 echo ' .ent x' > conftest.s
3705 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3706 echo ' ld $25,%call16(y)($28)' >> conftest.s
3707 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3708 echo '1: jalr $25' >> conftest.s
3709 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3710 echo '1: jalr $25' >> conftest.s
3711 echo ' .end x' >> conftest.s
3712 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3713 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3714 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3715 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3716 gcc_cv_as_ld_jalr_reloc=yes
3722 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3723 if test x$target_cpu_default = x; then
3724 target_cpu_default=MASK_RELAX_PIC_CALLS
3726 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3729 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3731 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3732 [gcc_cv_ld_mips_personality_relaxation],
3733 [gcc_cv_ld_mips_personality_relaxation=no
3734 if test $in_tree_ld = yes ; then
3735 if test "$gcc_cv_gld_major_version" -eq 2 \
3736 -a "$gcc_cv_gld_minor_version" -ge 21 \
3737 -o "$gcc_cv_gld_major_version" -gt 2; then
3738 gcc_cv_ld_mips_personality_relaxation=yes
3740 elif test x$gcc_cv_as != x \
3741 -a x$gcc_cv_ld != x \
3742 -a x$gcc_cv_readelf != x ; then
3743 cat > conftest.s <<EOF
3745 .cfi_personality 0x80,indirect_ptr
3752 .section .data,"aw",@progbits
3756 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3757 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3758 if $gcc_cv_readelf -d conftest 2>&1 \
3759 | grep TEXTREL > /dev/null 2>&1; then
3761 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3762 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3765 gcc_cv_ld_mips_personality_relaxation=yes
3769 rm -f conftest.s conftest.o conftest])
3770 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3771 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3772 [Define if your linker can relax absolute .eh_frame personality
3773 pointers into PC-relative form.])
3778 # Mips and HP-UX need the GNU assembler.
3779 # Linux on IA64 might be able to use the Intel assembler.
3782 mips*-*-* | *-*-hpux* )
3783 if test x$gas_flag = xyes \
3784 || test x"$host" != x"$build" \
3785 || test ! -x "$gcc_cv_as" \
3786 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3789 echo "*** This configuration requires the GNU assembler" >&2
3795 # ??? Not all targets support dwarf2 debug_line, even within a version
3796 # of gas. Moreover, we need to emit a valid instruction to trigger any
3797 # info to the output file. So, as supported targets are added to gas 2.11,
3798 # add some instruction here to (also) show we expect this might work.
3799 # ??? Once 2.11 is released, probably need to add first known working
3800 # version to the per-target configury.
3802 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3803 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3813 if test x"$insn" != x; then
3815 .file 1 \"conftest.s\"
3818 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3819 gcc_cv_as_dwarf2_debug_line,
3820 [elf,2,11,0],, [$conftest_s],
3821 [if test x$gcc_cv_objdump != x \
3822 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3823 | grep debug_line > /dev/null 2>&1; then
3824 gcc_cv_as_dwarf2_debug_line=yes
3827 # The .debug_line file table must be in the exact order that
3828 # we specified the files, since these indices are also used
3829 # by DW_AT_decl_file. Approximate this test by testing if
3830 # the assembler bitches if the same index is assigned twice.
3831 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3832 gcc_cv_as_dwarf2_file_buggy,,,
3836 if test $gcc_cv_as_dwarf2_debug_line = yes \
3837 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3838 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3839 [Define if your assembler supports dwarf2 .file/.loc directives,
3840 and preserves file table indices exactly as given.])
3843 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3844 gcc_cv_as_gdwarf2_flag,
3845 [elf,2,11,0], [--gdwarf2], [$insn],,
3846 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3847 [Define if your assembler supports the --gdwarf2 option.])])
3849 gcc_GAS_CHECK_FEATURE([--gstabs option],
3850 gcc_cv_as_gstabs_flag,
3851 [elf,2,11,0], [--gstabs], [$insn],
3852 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3853 # and warns about it, but still exits successfully. So check for
3855 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3857 else gcc_cv_as_gstabs_flag=yes
3859 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3860 [Define if your assembler supports the --gstabs option.])])
3862 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3863 gcc_cv_as_debug_prefix_map_flag,
3864 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3865 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3866 [Define if your assembler supports the --debug-prefix-map option.])])
3869 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3872 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3873 [Define if your assembler supports .lcomm with an alignment field.])])
3875 AC_ARG_ENABLE(gnu-unique-object,
3876 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3878 [case $enable_gnu_unique_object in
3880 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3881 Valid choices are 'yes' and 'no'.]) ;;
3883 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3885 [.type foo, @gnu_unique_object],,
3886 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3887 [[if test x$host = x$build -a x$host = x$target &&
3888 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3889 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3890 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3891 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3892 if test "$glibcnum" -ge 2011 ; then
3893 enable_gnu_unique_object=yes
3896 if test x$enable_gnu_unique_object = xyes; then
3897 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3898 [Define if your assembler supports @gnu_unique_object.])
3901 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3902 [gcc_cv_as_line_zero],
3903 [gcc_cv_as_line_zero=no
3904 if test $in_tree_gas = yes; then
3905 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3906 elif test "x$gcc_cv_as" != x; then
3907 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3908 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3909 test "x`cat conftest.out`" = x
3911 gcc_cv_as_line_zero=yes
3913 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3914 cat conftest.s >&AS_MESSAGE_LOG_FD
3915 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3916 cat conftest.out >&AS_MESSAGE_LOG_FD
3918 rm -f conftest.o conftest.s conftest.out
3920 if test "x$gcc_cv_as_line_zero" = xyes; then
3921 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3922 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3925 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3926 gcc_cv_ld_eh_frame_hdr=no
3927 if test $in_tree_ld = yes ; then
3928 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3929 && test $in_tree_ld_is_elf = yes; then
3930 gcc_cv_ld_eh_frame_hdr=yes
3932 elif test x$gcc_cv_ld != x; then
3933 # Check if linker supports --eh-frame-hdr option
3934 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3935 gcc_cv_ld_eh_frame_hdr=yes
3938 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3939 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3940 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3941 [Define if your linker supports --eh-frame-hdr option.])
3943 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3945 AC_MSG_CHECKING(linker position independent executable support)
3947 if test $in_tree_ld = yes ; then
3948 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3949 && test $in_tree_ld_is_elf = yes; then
3952 elif test x$gcc_cv_ld != x; then
3953 # Check if linker supports -pie option
3954 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3958 if test x"$gcc_cv_ld_pie" = xyes; then
3959 AC_DEFINE(HAVE_LD_PIE, 1,
3960 [Define if your linker supports -pie option.])
3962 AC_MSG_RESULT($gcc_cv_ld_pie)
3964 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3965 gcc_cv_ld_eh_gc_sections=no
3966 if test $in_tree_ld = yes ; then
3967 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3968 && test $in_tree_ld_is_elf = yes; then
3969 gcc_cv_ld_eh_gc_sections=yes
3971 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3972 cat > conftest.s <<EOF
3975 .type _start, @function
3978 .size _start, .-_start
3979 .section .text.foo,"ax",@progbits
3980 .type foo, @function
3984 .section .gcc_except_table.foo,"a",@progbits
3987 .section .eh_frame,"a",@progbits
3990 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3991 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3992 | grep "gc-sections option ignored" > /dev/null; then
3993 gcc_cv_ld_eh_gc_sections=no
3994 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3995 | grep gcc_except_table > /dev/null; then
3996 gcc_cv_ld_eh_gc_sections=yes
3997 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3998 if test x$gcc_cv_as_comdat_group != xyes; then
3999 gcc_cv_ld_eh_gc_sections=no
4000 cat > conftest.s <<EOF
4003 .type _start, @function
4006 .size _start, .-_start
4007 .section .gnu.linkonce.t.foo,"ax",@progbits
4008 .type foo, @function
4012 .section .gcc_except_table.foo,"a",@progbits
4015 .section .eh_frame,"a",@progbits
4018 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4019 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4020 | grep "gc-sections option ignored" > /dev/null; then
4021 gcc_cv_ld_eh_gc_sections=no
4022 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4023 | grep gcc_except_table > /dev/null; then
4024 gcc_cv_ld_eh_gc_sections=yes
4030 rm -f conftest.s conftest.o conftest
4034 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4035 gcc_cv_ld_eh_gc_sections=no
4038 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4039 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4040 [Define if your linker supports garbage collection of
4041 sections in presence of EH frames.])
4043 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4049 AC_CACHE_CHECK(linker --as-needed support,
4050 gcc_cv_ld_as_needed,
4051 [gcc_cv_ld_as_needed=no
4052 if test $in_tree_ld = yes ; then
4053 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4054 && test $in_tree_ld_is_elf = yes; then
4055 gcc_cv_ld_as_needed=yes
4057 elif test x$gcc_cv_ld != x; then
4058 # Check if linker supports --as-needed and --no-as-needed options
4059 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4060 gcc_cv_ld_as_needed=yes
4064 if test x"$gcc_cv_ld_as_needed" = xyes; then
4065 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4066 [Define if your linker supports --as-needed and --no-as-needed options.])
4069 case "$target:$tm_file" in
4070 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4071 AC_CACHE_CHECK(linker support for omitting dot symbols,
4072 gcc_cv_ld_no_dot_syms,
4073 [gcc_cv_ld_no_dot_syms=no
4074 if test $in_tree_ld = yes ; then
4075 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4076 gcc_cv_ld_no_dot_syms=yes
4078 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4079 cat > conftest1.s <<EOF
4083 cat > conftest2.s <<EOF
4084 .section ".opd","aw"
4089 .quad .LEfoo,.TOC.@tocbase,0
4095 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4096 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4097 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4098 gcc_cv_ld_no_dot_syms=yes
4100 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4103 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4104 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4105 [Define if your PowerPC64 linker only needs function descriptor syms.])
4108 AC_CACHE_CHECK(linker large toc support,
4109 gcc_cv_ld_large_toc,
4110 [gcc_cv_ld_large_toc=no
4111 if test $in_tree_ld = yes ; then
4112 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4113 gcc_cv_ld_large_toc=yes
4115 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4116 cat > conftest.s <<EOF
4117 .section ".tbss","awT",@nobits
4123 addis 9,13,ie0@got@tprel@ha
4124 ld 9,ie0@got@tprel@l(9)
4126 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4127 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4128 gcc_cv_ld_large_toc=yes
4130 rm -f conftest conftest.o conftest.s
4133 if test x"$gcc_cv_ld_large_toc" = xyes; then
4134 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4135 [Define if your PowerPC64 linker supports a large TOC.])
4140 AC_CACHE_CHECK(linker --build-id support,
4142 [gcc_cv_ld_buildid=no
4143 if test $in_tree_ld = yes ; then
4144 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4145 "$gcc_cv_gld_minor_version" -ge 18 -o \
4146 "$gcc_cv_gld_major_version" -gt 2 \
4147 && test $in_tree_ld_is_elf = yes; then
4148 gcc_cv_ld_buildid=yes
4150 elif test x$gcc_cv_ld != x; then
4151 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4152 gcc_cv_ld_buildid=yes
4155 if test x"$gcc_cv_ld_buildid" = xyes; then
4156 AC_DEFINE(HAVE_LD_BUILDID, 1,
4157 [Define if your linker supports --build-id.])
4160 AC_ARG_ENABLE(linker-build-id,
4161 [ --enable-linker-build-id
4162 compiler will always pass --build-id to linker],
4164 enable_linker_build_id=no)
4166 if test x"$enable_linker_build_id" = xyes; then
4167 if test x"$gcc_cv_ld_buildid" = xyes; then
4168 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4169 [Define if gcc should always pass --build-id to linker.])
4171 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4175 # In binutils 2.21, GNU ld gained support for new emulations fully
4176 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4177 AC_CACHE_CHECK(linker *_sol2 emulation support,
4178 gcc_cv_ld_sol2_emulation,
4179 [gcc_cv_ld_sol2_emulation=no
4180 if test $in_tree_ld = yes ; then
4181 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4182 "$gcc_cv_gld_minor_version" -ge 21 -o \
4183 "$gcc_cv_gld_major_version" -gt 2 \
4184 && test $in_tree_ld_is_elf = yes; then
4185 gcc_cv_ld_sol2_emulation=yes
4187 elif test x$gcc_cv_ld != x; then
4188 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4189 grep _sol2 > /dev/null; then
4190 gcc_cv_ld_sol2_emulation=yes
4193 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4194 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4195 [Define if your linker supports the *_sol2 emulations.])
4198 AC_CACHE_CHECK(linker --sysroot support,
4200 [gcc_cv_ld_sysroot=no
4201 if test $in_tree_ld = yes ; then
4202 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4203 gcc_cv_ld_sysroot=yes
4205 elif test x$gcc_cv_ld != x; then
4206 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4207 gcc_cv_ld_sysroot=yes
4210 if test x"$gcc_cv_ld_sysroot" = xyes; then
4211 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4212 [Define if your linker supports --sysroot.])
4215 if test x$with_sysroot = x && test x$host = x$target \
4216 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4217 && test "$prefix" != "NONE"; then
4218 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4219 [Define to PREFIX/include if cpp should also search that directory.])
4222 # Test for stack protector support in target C library.
4223 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4224 gcc_cv_libc_provides_ssp,
4225 [gcc_cv_libc_provides_ssp=no
4227 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4228 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4229 if test "x$with_headers" != x; then
4230 glibc_header_dir=$with_headers
4231 elif test "x$with_sysroot" = x; then
4232 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4233 elif test "x$with_build_sysroot" != "x"; then
4234 glibc_header_dir="${with_build_sysroot}/usr/include"
4235 elif test "x$with_sysroot" = xyes; then
4236 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4238 glibc_header_dir="${with_sysroot}/usr/include"
4241 glibc_header_dir=/usr/include
4243 [# glibc 2.4 and later provides __stack_chk_fail and
4244 # either __stack_chk_guard, or TLS access to stack guard canary.
4245 if test -f $glibc_header_dir/features.h \
4246 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4247 $glibc_header_dir/features.h > /dev/null; then
4248 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4249 $glibc_header_dir/features.h > /dev/null; then
4250 gcc_cv_libc_provides_ssp=yes
4251 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4252 $glibc_header_dir/features.h > /dev/null \
4253 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4254 $glibc_header_dir/features.h > /dev/null; then
4255 gcc_cv_libc_provides_ssp=yes
4256 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4257 $glibc_header_dir/features.h > /dev/null && \
4258 test -f $glibc_header_dir/bits/uClibc_config.h && \
4259 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4260 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4261 gcc_cv_libc_provides_ssp=yes
4266 # Avoid complicated tests (see
4267 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4268 # simply assert that glibc does provide this, which is true for all
4269 # realistically usable GNU/Hurd configurations.
4270 gcc_cv_libc_provides_ssp=yes;;
4271 *-*-darwin* | *-*-freebsd*)
4272 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4273 [echo "no __stack_chk_fail on this target"])
4275 *) gcc_cv_libc_provides_ssp=no ;;
4278 if test x$gcc_cv_libc_provides_ssp = xyes; then
4279 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4280 [Define if your target C library provides stack protector support])
4283 # Check if TFmode long double should be used by default or not.
4284 # Some glibc targets used DFmode long double, but with glibc 2.4
4285 # and later they can use TFmode.
4287 powerpc*-*-linux* | \
4292 AC_ARG_WITH(long-double-128,
4293 [ --with-long-double-128 Use 128-bit long double by default.],
4294 gcc_cv_target_ldbl128="$with_long_double_128",
4295 [[gcc_cv_target_ldbl128=no
4296 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4297 if test "x$with_sysroot" = x; then
4298 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4299 elif test "x$with_build_sysroot" != "x"; then
4300 glibc_header_dir="${with_build_sysroot}/usr/include"
4301 elif test "x$with_sysroot" = xyes; then
4302 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4304 glibc_header_dir="${with_sysroot}/usr/include"
4307 glibc_header_dir=/usr/include
4309 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4310 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4311 && gcc_cv_target_ldbl128=yes
4315 if test x$gcc_cv_target_ldbl128 = xyes; then
4316 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4317 [Define if TFmode long double should be the default])
4320 # Find out what GC implementation we want, or may, use.
4322 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4330 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4333 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4338 echo "Using $GGC for garbage collection."
4340 # Libraries to use on the host. This will normally be set by the top
4341 # level Makefile. Here we simply capture the value for our Makefile.
4342 if test -z "${HOST_LIBS+set}"; then
4347 # Use the system's zlib library.
4349 zlibinc="-I\$(srcdir)/../zlib"
4350 AC_ARG_WITH(system-zlib,
4351 [ --with-system-zlib use installed libz],
4358 dnl Very limited version of automake's enable-maintainer-mode
4360 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4361 dnl maintainer-mode is disabled by default
4362 AC_ARG_ENABLE(maintainer-mode,
4363 [ --enable-maintainer-mode
4364 enable make rules and dependencies not useful
4365 (and sometimes confusing) to the casual installer],
4366 maintainer_mode=$enableval,
4369 AC_MSG_RESULT($maintainer_mode)
4371 if test "$maintainer_mode" = "yes"; then
4382 # Make empty files to contain the specs and options for each language.
4383 # Then add #include lines to for a compiler that has specs and/or options.
4389 # These (without "all_") are set in each config-lang.in.
4390 # `language' must be a single word so is spelled singularly.
4393 all_outputs='Makefile'
4394 # List of language makefile fragments.
4396 # Additional files for gengtype
4397 all_gtfiles="$target_gtfiles"
4399 # These are the languages that are set in --enable-languages,
4400 # and are available in the GCC tree.
4401 all_selected_languages=
4403 # Add the language fragments.
4404 # Languages are added via two mechanisms. Some information must be
4405 # recorded in makefile variables, these are defined in config-lang.in.
4406 # We accumulate them and plug them into the main Makefile.
4407 # The other mechanism is a set of hooks for each of the main targets
4408 # like `clean', `install', etc.
4410 language_hooks="Make-hooks"
4412 for lang in ${srcdir}/*/config-lang.in
4415 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4417 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4418 if test "x$lang_alias" = x
4420 echo "$lang doesn't set \$language." 1>&2
4423 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4424 subdirs="$subdirs $subdir"
4426 # $gcc_subdir is where the gcc integration files are to be found
4427 # for a language, both for internal compiler purposes (compiler
4428 # sources implementing front-end to GCC tree converters), and for
4429 # build infrastructure purposes (Make-lang.in, etc.)
4431 # This will be <subdir> (relative to $srcdir) if a line like
4432 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4433 # is found in <langdir>/config-lang.in, and will remain <langdir>
4436 # Except for the language alias (fetched above), the regular
4437 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4438 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4439 # only this and the language alias.
4441 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4442 if [ "$gcc_subdir" = "" ]; then
4443 gcc_subdir="$subdir"
4446 case ",$enable_languages," in
4448 all_selected_languages="$all_selected_languages $lang_alias"
4449 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4450 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4462 . ${srcdir}/$gcc_subdir/config-lang.in
4463 if test "x$language" = x
4465 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4470 case ",$enable_languages," in
4473 for i in $subdir_requires; do
4474 test -f "${srcdir}/$i/config-lang.in" && continue
4482 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4483 if test -f $srcdir/$gcc_subdir/lang.opt; then
4484 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4485 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4487 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4488 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4490 all_languages="$all_languages $language"
4491 all_compilers="$all_compilers $compilers"
4492 all_outputs="$all_outputs $outputs"
4493 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4494 case ",$enable_languages," in
4496 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4498 AC_SUBST(enable_lto)
4504 # Pick up gtfiles for c
4506 . ${srcdir}/c-config-lang.in
4507 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4510 for language in $all_selected_languages
4512 check_languages="$check_languages check-$language"
4515 # We link each language in with a set of hooks, reached indirectly via
4516 # lang.${target}. Only do so for selected languages.
4520 target_list="all.cross start.encap rest.encap tags \
4521 install-common install-man install-info install-pdf install-html dvi \
4522 pdf html uninstall info man srcextra srcman srcinfo \
4523 mostlyclean clean distclean maintainer-clean install-plugin"
4525 for t in $target_list
4528 for lang in $all_selected_languages
4532 echo "lang.$t: $x" >> Make-hooks
4536 # Option include files
4539 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4540 option_includes="option-includes.mk"
4541 AC_SUBST_FILE(option_includes)
4549 echo "dir ." > .gdbinit
4550 echo "dir ${srcdir}" >> .gdbinit
4551 if test x$gdb_needs_out_file_path = xyes
4553 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4555 if test "x$subdirs" != x; then
4558 echo "dir ${srcdir}/$s" >> .gdbinit
4561 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4563 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4564 AC_SUBST(gcc_tooldir)
4567 # Find a directory in which to install a shared libgcc.
4569 AC_ARG_ENABLE(version-specific-runtime-libs,
4570 [ --enable-version-specific-runtime-libs
4571 specify that runtime libraries should be
4572 installed in a compiler-specific directory])
4574 AC_ARG_WITH(slibdir,
4575 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4576 slibdir="$with_slibdir",
4577 if test "${enable_version_specific_runtime_libs+set}" = set; then
4578 slibdir='$(libsubdir)'
4579 elif test "$host" != "$target"; then
4580 slibdir='$(build_tooldir)/lib'
4586 # Substitute configuration variables
4589 AC_SUBST(all_compilers)
4590 AC_SUBST(all_gtfiles)
4591 AC_SUBST(all_lang_makefrags)
4592 AC_SUBST(all_languages)
4593 AC_SUBST(all_selected_languages)
4594 AC_SUBST(build_exeext)
4595 AC_SUBST(build_install_headers_dir)
4596 AC_SUBST(build_xm_file_list)
4597 AC_SUBST(build_xm_include_list)
4598 AC_SUBST(build_xm_defines)
4599 AC_SUBST(build_file_translate)
4600 AC_SUBST(check_languages)
4601 AC_SUBST(cpp_install_dir)
4602 AC_SUBST(xmake_file)
4603 AC_SUBST(tmake_file)
4604 AC_SUBST(TM_ENDIAN_CONFIG)
4605 AC_SUBST(TM_MULTILIB_CONFIG)
4606 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4607 AC_SUBST(extra_gcc_objs)
4608 AC_SUBST(user_headers_inc_next_pre)
4609 AC_SUBST(user_headers_inc_next_post)
4610 AC_SUBST(extra_headers_list)
4611 AC_SUBST(extra_objs)
4612 AC_SUBST(extra_parts)
4613 AC_SUBST(extra_passes)
4614 AC_SUBST(extra_programs)
4615 AC_SUBST(float_h_file)
4616 AC_SUBST(gcc_config_arguments)
4617 AC_SUBST(gcc_gxx_include_dir)
4618 AC_SUBST(host_exeext)
4619 AC_SUBST(host_xm_file_list)
4620 AC_SUBST(host_xm_include_list)
4621 AC_SUBST(host_xm_defines)
4622 AC_SUBST(out_host_hook_obj)
4624 AC_SUBST(lang_opt_files)
4625 AC_SUBST(lang_specs_files)
4626 AC_SUBST(lang_tree_files)
4627 AC_SUBST(local_prefix)
4629 AC_SUBST(objc_boehm_gc)
4631 AC_SUBST(out_object_file)
4632 AC_SUBST(thread_file)
4633 AC_SUBST(tm_file_list)
4634 AC_SUBST(tm_include_list)
4635 AC_SUBST(tm_defines)
4636 AC_SUBST(tm_p_file_list)
4637 AC_SUBST(tm_p_include_list)
4638 AC_SUBST(xm_file_list)
4639 AC_SUBST(xm_include_list)
4640 AC_SUBST(xm_defines)
4641 AC_SUBST(use_gcc_stdint)
4642 AC_SUBST(c_target_objs)
4643 AC_SUBST(cxx_target_objs)
4644 AC_SUBST(fortran_target_objs)
4645 AC_SUBST(target_cpu_default)
4647 AC_SUBST_FILE(language_hooks)
4650 if test x${build} = x${host} ; then
4651 if test x${host} = x${target} ; then
4652 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4654 echo "Links are now set up to build a cross-compiler" 1>&2
4655 echo " from ${host} to ${target}." 1>&2
4658 if test x${host} = x${target} ; then
4659 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4660 echo " for ${target}." 1>&2
4662 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4663 echo " from ${host} to ${target}." 1>&2
4667 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4668 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4670 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4671 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4673 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4674 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4675 if test "x${CLOOGLIBS}" != "x" ; then
4676 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4679 # Check for plugin support
4680 AC_ARG_ENABLE(plugin,
4681 [ --enable-plugin enable plugin support],
4682 enable_plugin=$enableval,
4683 enable_plugin=yes; default_plugin=yes)
4689 if test x$build = x$host; then
4690 export_sym_check="nm${exeext} -g"
4691 elif test x$host = x$target; then
4692 export_sym_check="$gcc_cv_nm -g"
4698 if test x$build = x$host; then
4699 export_sym_check="objdump${exeext} -T"
4700 elif test x$host = x$target; then
4701 export_sym_check="$gcc_cv_objdump -T"
4708 if test x"$enable_plugin" = x"yes"; then
4710 AC_MSG_CHECKING([for exported symbols])
4711 if test "x$export_sym_check" != x; then
4712 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4713 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4714 if $export_sym_check conftest | grep foobar > /dev/null; then
4715 : # No need to use a flag
4716 AC_MSG_RESULT([yes])
4718 AC_MSG_RESULT([yes])
4719 AC_MSG_CHECKING([for -rdynamic])
4720 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4721 if $export_sym_check conftest | grep foobar > /dev/null; then
4723 pluginlibs="-rdynamic"
4728 AC_MSG_RESULT([$plugin_rdynamic])
4731 AC_MSG_RESULT([unable to check])
4736 AC_SEARCH_LIBS([dlopen], [dl])
4737 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4738 pluginlibs="$pluginlibs -ldl"
4742 # Check that we can build shared objects with -fPIC -shared
4743 saved_LDFLAGS="$LDFLAGS"
4744 saved_CFLAGS="$CFLAGS"
4747 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4748 CFLAGS="$CFLAGS -fPIC"
4749 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4752 CFLAGS="$CFLAGS -fPIC"
4753 LDFLAGS="$LDFLAGS -fPIC -shared"
4756 AC_MSG_CHECKING([for -fPIC -shared])
4758 [extern int X;],[return X == 0;],
4759 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4760 [AC_MSG_RESULT([no]); have_pic_shared=no])
4761 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4765 LDFLAGS="$saved_LDFLAGS"
4766 CFLAGS="$saved_CFLAGS"
4768 # If plugin support had been requested but not available, fail.
4769 if test x"$enable_plugin" = x"no" ; then
4770 if test x"$default_plugin" != x"yes"; then
4772 Building GCC with plugin support requires a host that supports
4773 -fPIC, -shared, -ldl and -rdynamic.])
4778 AC_SUBST(pluginlibs)
4779 AC_SUBST(enable_plugin)
4780 if test x"$enable_plugin" = x"yes"; then
4781 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4784 # Configure the subdirectories
4785 # AC_CONFIG_SUBDIRS($subdirs)
4787 # Create the Makefile
4788 # and configure language subdirectories
4789 AC_CONFIG_FILES($all_outputs)
4791 AC_CONFIG_COMMANDS([default],
4793 case ${CONFIG_HEADERS} in
4794 *auto-host.h:config.in*)
4797 # Make sure all the subdirs exist.
4798 for d in $subdirs doc build c-family
4800 test -d $d || mkdir $d
4803 [subdirs='$subdirs'])