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, 2011 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 # The use of native_system_header_dir here is for the value (optionally)
713 # configured here. Uses of NATIVE_SYSTEM_HEADER_DIR in this file refer
714 # to the make variable defined in Makefile or in target make fragments.
715 AC_ARG_WITH([native-system-header-dir],
716 [ --with-native-system-header-dir=dir
717 use dir as the directory to look for standard
718 system header files in. Defaults to /usr/include.],
720 case ${with_native_system_header_dir} in
721 yes|no) AC_MSG_ERROR([bad value ${withval} given for native system include directory]) ;;
723 *) AC_MSG_ERROR([${withval} should be an absolute directory]) ;;
725 native_system_header_dir="${withval}"
726 ], [native_system_header_dir=/usr/include])
727 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR, $native_system_header_dir)
729 AC_ARG_WITH([runtime-root-prefix],
730 [ --with-runtime-root-prefix=prefix
731 prepend prefix to paths used by the compiler to
732 name the dynamic linker and other files used at
733 runtime. Defaults to empty (no prefix).],
735 case ${with_runtime_root_prefix} in
736 yes|no) AC_MSG_ERROR([bad value ${withval} given for runtime root prefix]) ;;
738 *) AC_MSG_ERROR([${withval} should be an absolute directory]) ;;
740 RUNTIME_ROOT_PREFIX_DEFINE="-DRUNTIME_ROOT_PREFIX=\\\"${withval}\\\""
741 ], [RUNTIME_ROOT_PREFIX_DEFINE=""])
742 AC_SUBST(RUNTIME_ROOT_PREFIX_DEFINE)
744 AC_ARG_WITH([build-sysroot],
745 [ --with-build-sysroot=SYSROOT
746 use sysroot as the system root during the build],
747 [if test x"$withval" != x ; then
748 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
750 [SYSROOT_CFLAGS_FOR_TARGET=])
751 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
754 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
756 case ${with_sysroot} in
757 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
758 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
761 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
762 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
764 if test "x$prefix" = xNONE; then
765 test_prefix=/usr/local
769 if test "x$exec_prefix" = xNONE; then
770 test_exec_prefix=$test_prefix
772 test_exec_prefix=$exec_prefix
774 case ${TARGET_SYSTEM_ROOT} in
775 "${test_prefix}"|"${test_prefix}/"*|\
776 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
777 '${prefix}'|'${prefix}/'*|\
778 '${exec_prefix}'|'${exec_prefix}/'*)
779 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
780 TARGET_SYSTEM_ROOT_DEFINE="$t"
785 TARGET_SYSTEM_ROOT_DEFINE=
786 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
788 AC_SUBST(TARGET_SYSTEM_ROOT)
789 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
790 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
793 [AS_HELP_STRING([--with-specs=SPECS],
794 [add SPECS to driver command-line processing])],
795 [CONFIGURE_SPECS=$withval],
798 AC_SUBST(CONFIGURE_SPECS)
800 ACX_PKGVERSION([GCC])
801 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
803 # Sanity check enable_languages in case someone does not run the toplevel
804 # configure # script.
805 AC_ARG_ENABLE(languages,
806 [ --enable-languages=LIST specify which front-ends to build],
807 [case ,${enable_languages}, in
809 # go safe -- we cannot be much sure without the toplevel
811 # analysis of which target libs are present and usable
815 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
820 enable_languages=c,${enable_languages}
823 [enable_languages=c])
825 AC_ARG_WITH(multilib-list,
826 [ --with-multilib-list Select multilibs (SH only)],
828 with_multilib_list=default)
830 # -------------------------
831 # Checks for other programs
832 # -------------------------
836 # Find some useful tools
838 # We need awk to create options.c and options.h.
839 # Bail out if it's missing.
841 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
849 # By default, the Darwin ranlib will not treat common symbols as
850 # definitions when building the archive table of contents. Other
851 # ranlibs do that; pass an option to the Darwin ranlib that makes
852 # it behave similarly.
858 AC_SUBST(ranlib_flags)
862 # See if cmp has --ignore-initial.
863 gcc_AC_PROG_CMP_IGNORE_INITIAL
865 # See if we have the mktemp command.
866 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
868 # See if makeinfo has been installed and is modern enough
869 # that we can use it.
870 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
871 [GNU texinfo.* \([0-9][0-9.]*\)],
872 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
873 if test $gcc_cv_prog_makeinfo_modern = no; then
875 *** Makeinfo is missing or too old.
876 *** Info documentation will not be built.])
883 # Is pod2man recent enough to regenerate manpages?
884 AC_MSG_CHECKING([for recent Pod::Man])
885 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
887 GENERATED_MANPAGES=generated-manpages
892 AC_SUBST(GENERATED_MANPAGES)
894 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
897 dnl Don't use AC_PROG_LEX; we insist on flex.
898 dnl LEXLIB is not useful in gcc.
899 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
902 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
904 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
905 # check for build == host before using them.
908 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
909 && test -d ../binutils ; then
910 NM='${objdir}/../binutils/nm-new'
912 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
916 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
917 && test -d ../binutils ; then
918 AR='${objdir}/../binutils/ar'
920 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
924 # --------------------
925 # Checks for C headers
926 # --------------------
928 # Need to reject headers which give warnings, so that the -Werror bootstrap
929 # works later. *sigh* This needs to come before all header checks.
936 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
937 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
938 sys/resource.h sys/param.h sys/times.h sys/stat.h \
939 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
941 # Check for thread headers.
942 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
943 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
945 # These tests can't be done till we know if we have limits.h.
949 # ----------------------
950 # Checks for C++ headers
951 # ----------------------
953 dnl Autoconf will give an error in the configure script if there is no
954 dnl C++ preprocessor. Hack to prevent that.
955 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
957 m4_popdef([AC_MSG_ERROR])[]dnl
961 AC_CHECK_HEADERS(unordered_map)
962 AC_CHECK_HEADERS(tr1/unordered_map)
963 AC_CHECK_HEADERS(ext/hash_map)
972 # These libraries may be used by collect2.
973 # We may need a special search path to get them linked.
974 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
976 for libs in '' -lld -lmld \
977 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
978 '-L/usr/lib/cmplrs/cc3.11 -lmld'
981 AC_TRY_LINK_FUNC(ldopen,
982 [gcc_cv_collect2_libs="$libs"; break])
985 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
986 case $gcc_cv_collect2_libs in
988 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
990 AC_SUBST(COLLECT2_LIBS)
992 # When building Ada code on Alpha, we need exc_resume which is usually in
993 # -lexc. So test for it.
996 AC_SEARCH_LIBS(exc_resume, exc)
999 AC_SUBST(GNAT_LIBEXC)
1001 # Some systems put ldexp and frexp in libm instead of libc; assume
1002 # they're both in the same place. jcf-dump needs them.
1005 AC_SEARCH_LIBS(ldexp, m)
1010 # Use <inttypes.h> only if it exists,
1011 # doesn't clash with <sys/types.h>, and declares intmax_t.
1012 AC_MSG_CHECKING(for inttypes.h)
1013 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1014 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1015 [[#include <sys/types.h>
1016 #include <inttypes.h>]],
1017 [[intmax_t i = -1;]])],
1018 [gcc_cv_header_inttypes_h=yes],
1019 [gcc_cv_header_inttypes_h=no])])
1020 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1021 if test $gcc_cv_header_inttypes_h = yes; then
1022 AC_DEFINE(HAVE_INTTYPES_H, 1,
1023 [Define if you have a working <inttypes.h> header file.])
1026 dnl Disabled until we have a complete test for buggy enum bitfields.
1027 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1029 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1030 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1031 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1032 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1033 putchar_unlocked putc_unlocked)
1034 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1035 sysconf strsignal getrusage nl_langinfo \
1036 gettimeofday mbstowcs wcswidth mmap setlocale \
1039 if test x$ac_cv_func_mbstowcs = xyes; then
1040 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1041 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1047 [gcc_cv_func_mbstowcs_works=yes],
1048 [gcc_cv_func_mbstowcs_works=no],
1049 [gcc_cv_func_mbstowcs_works=yes])])
1050 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1051 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1052 [Define this macro if mbstowcs does not crash when its
1053 first argument is NULL.])
1057 AC_CHECK_TYPE(ssize_t, int)
1058 AC_CHECK_TYPE(caddr_t, char *)
1060 gcc_AC_FUNC_MMAP_BLACKLIST
1064 # Under VMS, vfork works very differently than on Unix. The standard test
1065 # won't work, and it isn't easily adaptable. It makes more sense to
1067 ac_cv_func_vfork_works=yes
1073 # Until we have in-tree GNU iconv:
1075 AC_SUBST(LIBICONV_DEP)
1081 # We will need to find libiberty.h and ansidecl.h
1082 saved_CFLAGS="$CFLAGS"
1083 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1084 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1085 strsignal strstr strverscmp \
1086 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1087 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1088 #include "ansidecl.h"
1089 #include "system.h"])
1091 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1092 #include "ansidecl.h"
1094 #ifdef HAVE_SYS_RESOURCE_H
1095 #include <sys/resource.h>
1099 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1100 #include "ansidecl.h"
1102 #ifdef HAVE_SYS_RESOURCE_H
1103 #include <sys/resource.h>
1105 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1106 [Define to `long' if <sys/resource.h> doesn't define.])])
1108 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1109 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1110 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1111 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1112 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1113 #include "ansidecl.h"
1122 gcc_AC_CHECK_DECLS(times, , ,[
1123 #include "ansidecl.h"
1125 #ifdef HAVE_SYS_TIMES_H
1126 #include <sys/times.h>
1130 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1131 #include "ansidecl.h"
1136 # More time-related stuff.
1137 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1138 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1139 #include "ansidecl.h"
1141 #ifdef HAVE_SYS_TIMES_H
1142 #include <sys/times.h>
1144 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1145 if test $ac_cv_struct_tms = yes; then
1146 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1147 [Define if <sys/times.h> defines struct tms.])
1150 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1151 # revisit after autoconf 2.50.
1152 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1153 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1154 #include "ansidecl.h"
1156 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1157 if test $gcc_cv_type_clock_t = yes; then
1158 AC_DEFINE(HAVE_CLOCK_T, 1,
1159 [Define if <time.h> defines clock_t.])
1162 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1163 CFLAGS="$saved_CFLAGS"
1165 gcc_AC_INITFINI_ARRAY
1167 # mkdir takes a single argument on some systems.
1168 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1176 # With Setjmp/Longjmp based exception handling.
1177 AC_ARG_ENABLE(sjlj-exceptions,
1178 [ --enable-sjlj-exceptions
1179 arrange to use setjmp/longjmp exception handling],
1182 if test $enableval != yes; then
1183 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1188 force_sjlj_exceptions=yes],
1191 force_sjlj_exceptions=yes
1195 force_sjlj_exceptions=no
1198 if test $force_sjlj_exceptions = yes; then
1199 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1200 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1201 [Define 0/1 to force the choice for exception handling model.])
1204 # For platforms with the unwind ABI which includes an unwind library,
1205 # libunwind, we can choose to use the system libunwind.
1206 # config.gcc also contains tests of with_system_libunwind.
1207 GCC_CHECK_UNWIND_GETIPINFO
1209 # --------------------------------------------------------
1210 # Build, host, and target specific configuration fragments
1211 # --------------------------------------------------------
1213 # Collect build-machine-specific information.
1214 . ${srcdir}/config.build
1216 # Collect host-machine-specific information.
1217 . ${srcdir}/config.host
1221 # Collect target-machine-specific information.
1222 . ${srcdir}/config.gcc
1224 extra_objs="${host_extra_objs} ${extra_objs}"
1225 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1227 # Default the target-machine variables that were not explicitly set.
1228 if test x"$tm_file" = x
1229 then tm_file=$cpu_type/$cpu_type.h; fi
1231 if test x"$extra_headers" = x
1232 then extra_headers=; fi
1234 if test x$md_file = x
1235 then md_file=$cpu_type/$cpu_type.md; fi
1237 if test x$out_file = x
1238 then out_file=$cpu_type/$cpu_type.c; fi
1240 if test x"$tmake_file" = x
1241 then tmake_file=$cpu_type/t-$cpu_type
1244 if test x"$dwarf2" = xyes
1245 then tm_file="$tm_file tm-dwarf2.h"
1248 # Say what files are being used for the output code and MD file.
1249 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1250 echo "Using \`$srcdir/config/$md_file' as machine description file."
1252 # If any of the xm_file variables contain nonexistent files, warn
1253 # about them and drop them.
1256 for x in $build_xm_file; do
1257 if test -f $srcdir/config/$x
1259 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1265 for x in $host_xm_file; do
1266 if test -f $srcdir/config/$x
1268 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1274 for x in $xm_file; do
1275 if test -f $srcdir/config/$x
1277 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1283 for f in $tm_file; do
1286 if test $count = ax; then
1287 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1289 echo "Using the following target machine macro files:"
1290 for f in $tm_file; do
1291 echo " $srcdir/config/$f"
1295 if test x$need_64bit_hwint = xyes; then
1296 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1297 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1300 if test x$use_long_long_for_widest_fast_int = xyes; then
1301 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1302 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1303 efficiently supported by the host hardware.])
1307 for f in $host_xm_file; do
1310 if test $count = a; then
1312 elif test $count = ax; then
1313 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1315 echo "Using the following host machine macro files:"
1316 for f in $host_xm_file; do
1317 echo " $srcdir/config/$f"
1320 echo "Using ${out_host_hook_obj} for host machine hooks."
1322 if test "$host_xm_file" != "$build_xm_file"; then
1324 for f in $build_xm_file; do
1327 if test $count = a; then
1329 elif test $count = ax; then
1330 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1332 echo "Using the following build machine macro files:"
1333 for f in $build_xm_file; do
1334 echo " $srcdir/config/$f"
1341 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1342 gcc_cv_mcontext_underscores,
1344 #include <sys/cdefs.h>
1345 #include <sys/signal.h>
1346 #include <ucontext.h>
1347 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1349 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1350 if test $gcc_cv_mcontext_underscores = yes; then
1351 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1352 [mcontext_t fields start with __])
1361 # Check if a valid thread package
1362 case ${enable_threads} in
1365 target_thread_file='single'
1369 target_thread_file='single'
1371 aix | dce | gnat | irix | posix | posix95 | rtems | \
1372 single | vxworks | win32 | mipssde)
1373 target_thread_file=${enable_threads}
1376 echo "${enable_threads} is an unknown thread package" 1>&2
1381 if test x${thread_file} = x; then
1382 # No thread file set by target-specific clauses in config.gcc,
1383 # so use file chosen by default logic above
1384 thread_file=${target_thread_file}
1387 # Make gthr-default.h if we have a thread file.
1389 if test $thread_file != single; then
1390 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1391 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1392 rm -f gthr-default.h-t
1394 mv -f gthr-default.h-t gthr-default.h
1396 gthread_flags=-DHAVE_GTHR_DEFAULT
1398 AC_SUBST(gthread_flags)
1405 if test x$enable___cxa_atexit = xyes || \
1406 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1407 if test x$host = x$target; then
1409 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1410 # keyed to flag_use_cxa_atexit
1415 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1416 [echo "__cxa_atexit can't be enabled on this target"])
1420 # We can't check for __cxa_atexit when building a cross, so assume
1424 if test x$use_cxa_atexit = xyes; then
1425 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1426 [Define if you want to use __cxa_atexit, rather than atexit, to
1427 register C++ destructors for local statics and global objects.
1428 This is essential for fully standards-compliant handling of
1429 destructors, but requires __cxa_atexit in libc.])
1433 # Look for a file containing extra machine modes.
1434 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1435 extra_modes_file='$(srcdir)'/config/${extra_modes}
1436 AC_SUBST(extra_modes_file)
1437 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1438 [Define to the name of a file containing a list of extra machine modes
1439 for this architecture.])
1442 # Convert extra_options into a form suitable for Makefile use.
1445 for f in $extra_options; do
1446 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1447 all_opt_files="$all_opt_files $srcdir/config/$f"
1449 AC_SUBST(extra_opt_files)
1451 # auto-host.h is the file containing items generated by autoconf and is
1452 # the first file included by config.h.
1453 # If host=build, it is correct to have bconfig include auto-host.h
1454 # as well. If host!=build, we are in error and need to do more
1455 # work to find out the build config parameters.
1456 if test x$host = x$build
1458 build_auto=auto-host.h
1460 # We create a subdir, then run autoconf in the subdir.
1461 # To prevent recursion we set host and build for the new
1462 # invocation of configure to the build for this invocation
1469 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1470 *) realsrcdir=../${srcdir};;
1472 saved_CFLAGS="${CFLAGS}"
1473 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1474 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1475 ${realsrcdir}/configure \
1476 --enable-languages=${enable_languages-all} \
1477 --target=$target_alias --host=$build_alias --build=$build_alias
1478 CFLAGS="${saved_CFLAGS}"
1480 # We just finished tests for the build machine, so rename
1481 # the file auto-build.h in the gcc directory.
1482 mv auto-host.h ../auto-build.h
1485 build_auto=auto-build.h
1487 AC_SUBST(build_subdir)
1489 tm_file="${tm_file} defaults.h"
1490 tm_p_file="${tm_p_file} tm-preds.h"
1491 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1492 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1493 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1494 # put this back in temporarily.
1495 xm_file="auto-host.h ansidecl.h ${xm_file}"
1502 # Compile in configure arguments.
1503 if test -f configargs.h ; then
1504 # Being re-configured.
1505 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1506 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1508 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1511 # Double all backslashes and backslash all quotes to turn
1512 # gcc_config_arguments into a C string.
1513 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1514 $gcc_config_arguments
1516 gcc_config_arguments_str=`cat conftest.out`
1519 cat > configargs.h <<EOF
1520 /* Generated automatically. */
1521 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1522 static const char thread_model[] = "$thread_file";
1524 static const struct {
1525 const char *name, *value;
1526 } configure_default_options[] = $configure_default_options;
1531 gcc_BASEVER=`cat $srcdir/BASE-VER`
1532 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1533 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1534 if test -f $srcdir/REVISION ; then
1535 gcc_REVISION=`cat $srcdir/REVISION`
1539 cat > plugin-version.h <<EOF
1540 #include "configargs.h"
1542 static char basever[] = "$gcc_BASEVER";
1543 static char datestamp[] = "$gcc_DATESTAMP";
1544 static char devphase[] = "$gcc_DEVPHASE";
1545 static char revision[] = "$gcc_REVISION";
1547 /* FIXME plugins: We should make the version information more precise.
1548 One way to do is to add a checksum. */
1550 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1552 configuration_arguments};
1556 # Internationalization
1557 ZW_GNU_GETTEXT_SISTER_DIR
1559 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1560 # -liconv on the link line twice.
1561 case "$LIBINTL" in *$LIBICONV*)
1565 AC_ARG_ENABLE(secureplt,
1566 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1569 AC_ARG_ENABLE(leading-mingw64-underscores,
1570 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1571 [Enable leading underscores on 64 bit mingw targets]),
1573 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1574 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1575 [Define if we should use leading underscore on 64 bit mingw targets])])
1578 [ --enable-cld enable -mcld by default for 32bit x86], [],
1581 AC_ARG_ENABLE(frame-pointer,
1582 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1585 linux* | darwin[[8912]]*)
1586 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1588 enable_frame_pointer=no
1591 enable_frame_pointer=yes
1596 # Windows32 Registry support for specifying GCC installation paths.
1597 AC_ARG_ENABLE(win32-registry,
1598 [ --disable-win32-registry
1599 disable lookup of installation paths in the
1600 Registry on Windows hosts
1601 --enable-win32-registry enable registry lookup (default)
1602 --enable-win32-registry=KEY
1603 use KEY instead of GCC version as the last portion
1604 of the registry key],,)
1607 win32 | pe | cygwin* | mingw32* | uwin*)
1608 if test "x$enable_win32_registry" != xno; then
1609 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1612 if test "x$enable_win32_registry" != xno; then
1613 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1614 [Define to 1 if installation paths should be looked up in the Windows
1615 Registry. Ignored on non-Windows hosts.])
1617 if test "x$enable_win32_registry" != xyes \
1618 && test "x$enable_win32_registry" != x; then
1619 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1620 [Define to be the last component of the Windows registry key under which
1621 to look for installation paths. The full key used will be
1622 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1623 The default is the GCC version number.])
1629 # Get an absolute path to the GCC top-level source directory
1630 holddir=`${PWDCMD-pwd}`
1632 topdir=`${PWDCMD-pwd}`
1635 # Conditionalize the makefile for this host machine.
1637 for f in ${host_xmake_file}
1639 if test -f ${srcdir}/config/$f
1641 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1645 # Conditionalize the makefile for this target machine.
1647 for f in ${tmake_file}
1649 if test -f ${srcdir}/config/$f
1651 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1654 tmake_file="${tmake_file_}"
1656 out_object_file=`basename $out_file .c`.o
1658 tm_file_list="options.h"
1659 tm_include_list="options.h insn-constants.h"
1660 for f in $tm_file; do
1663 f=`echo $f | sed 's/^..//'`
1664 tm_file_list="${tm_file_list} $f"
1665 tm_include_list="${tm_include_list} $f"
1668 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1669 tm_include_list="${tm_include_list} $f"
1672 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1673 tm_include_list="${tm_include_list} config/$f"
1680 for f in $tm_p_file; do
1683 tm_p_file_list="${tm_p_file_list} $f"
1684 tm_p_include_list="${tm_p_include_list} $f"
1687 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1688 tm_p_include_list="${tm_p_include_list} config/$f"
1694 for f in $xm_file; do
1697 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1698 xm_include_list="${xm_include_list} $f"
1701 xm_file_list="${xm_file_list} $f"
1702 xm_include_list="${xm_include_list} $f"
1705 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1706 xm_include_list="${xm_include_list} config/$f"
1712 host_xm_include_list=
1713 for f in $host_xm_file; do
1716 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1717 host_xm_include_list="${host_xm_include_list} $f"
1720 host_xm_file_list="${host_xm_file_list} $f"
1721 host_xm_include_list="${host_xm_include_list} $f"
1724 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1725 host_xm_include_list="${host_xm_include_list} config/$f"
1731 for f in $build_xm_file; do
1734 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1735 build_xm_include_list="${build_xm_include_list} $f"
1737 auto-build.h | auto-host.h )
1738 build_xm_file_list="${build_xm_file_list} $f"
1739 build_xm_include_list="${build_xm_include_list} $f"
1742 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1743 build_xm_include_list="${build_xm_include_list} config/$f"
1748 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1749 # cross-compiler which does not use the native headers and libraries.
1750 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1751 CROSS= AC_SUBST(CROSS)
1752 ALL=all.internal AC_SUBST(ALL)
1753 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1755 if test "x$with_build_sysroot" != x; then
1756 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1758 # This value is used, even on a native system, because
1759 # CROSS_SYSTEM_HEADER_DIR is just
1760 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1761 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1764 if test x$host != x$target
1766 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1768 SYSTEM_HEADER_DIR=$build_system_header_dir
1769 case "$host","$target" in
1770 # Darwin crosses can use the host system's libraries and headers,
1771 # because of the fat library support. Of course, it must be the
1772 # same version of Darwin on both sides. Allow the user to
1773 # just say --target=foo-darwin without a version number to mean
1774 # "the version on this system".
1775 *-*-darwin*,*-*-darwin*)
1776 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1777 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1778 if test $hostos = $targetos -o $targetos = darwin ; then
1780 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1785 i?86-*-*,x86_64-*-* \
1786 | powerpc*-*-*,powerpc64*-*-*)
1787 CROSS="$CROSS -DNATIVE_CROSS" ;;
1792 if test "x$with_headers" = x; then
1799 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1800 SYSTEM_HEADER_DIR=$build_system_header_dir
1803 # If this is a cross-compiler that does not
1804 # have its own set of headers then define
1807 # If this is using newlib, without having the headers available now,
1808 # then define inhibit_libc in LIBGCC2_CFLAGS.
1809 # This prevents libgcc2 from containing any code which requires libc
1811 : ${inhibit_libc=false}
1812 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1813 test x$with_newlib = xyes ; } &&
1814 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1817 AC_SUBST(inhibit_libc)
1819 # When building gcc with a cross-compiler, we need to adjust things so
1820 # that the generator programs are still built with the native compiler.
1821 # Also, we cannot run fixincludes.
1823 # These are the normal (build=host) settings:
1824 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1825 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1826 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1827 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1829 # And these apply if build != host, or we are generating coverage data
1830 if test x$build != x$host || test "x$coverage_flags" != x
1832 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1833 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1836 # Expand extra_headers to include complete path.
1837 # This substitutes for lots of t-* files.
1839 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1840 for file in ${extra_headers} ; do
1841 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1844 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1845 if test x"$use_gcc_tgmath" = xyes
1846 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1849 # Define collect2 in Makefile.
1850 case $host_can_use_collect2 in
1852 *) collect2='collect2$(exeext)' ;;
1854 AC_SUBST([collect2])
1856 # Add a definition of USE_COLLECT2 if system wants one.
1857 case $use_collect2 in
1858 no) use_collect2= ;;
1861 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1862 xm_defines="${xm_defines} USE_COLLECT2"
1863 case $host_can_use_collect2 in
1865 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1871 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1872 [Define to the name of the LTO plugin DSO that must be
1873 passed to the linker's -plugin=LIB option.])
1875 # ---------------------------
1876 # Assembler & linker features
1877 # ---------------------------
1879 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1880 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1881 # However when ld-new is first executed from the build tree, libtool will
1882 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1883 # to the build tree. While doing this we need to use the previous-stage
1884 # linker, or we have an infinite loop. The presence of a shell script as
1885 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1886 # the gcc/collect-ld script. So we need to know how libtool works, or
1887 # exec-tool will fail.
1889 m4_defun([_LT_CONFIG_COMMANDS], [])
1892 AC_SUBST(enable_fast_install)
1894 # Identify the assembler which will work hand-in-glove with the newly
1895 # built GCC, so that we can examine its features. This is the assembler
1896 # which will be driven by the driver program.
1898 # If build != host, and we aren't building gas in-tree, we identify a
1899 # build->target assembler and hope that it will have the same features
1900 # as the host->target assembler we'll be using.
1901 gcc_cv_gas_major_version=
1902 gcc_cv_gas_minor_version=
1903 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1905 m4_pattern_allow([AS_FOR_TARGET])dnl
1906 AS_VAR_SET_IF(gcc_cv_as,, [
1907 if test -x "$DEFAULT_ASSEMBLER"; then
1908 gcc_cv_as="$DEFAULT_ASSEMBLER"
1909 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1910 && test -f ../gas/Makefile \
1911 && test x$build = x$host; then
1912 gcc_cv_as=../gas/as-new$build_exeext
1913 elif test -x as$build_exeext; then
1914 # Build using assembler in the current directory.
1915 gcc_cv_as=./as$build_exeext
1916 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1917 gcc_cv_as="$AS_FOR_TARGET"
1919 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1922 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1923 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1924 case "$ORIGINAL_AS_FOR_TARGET" in
1925 ./as | ./as$build_exeext) ;;
1926 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1929 AC_MSG_CHECKING(what assembler to use)
1930 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1931 # Single tree build which includes gas. We want to prefer it
1932 # over whatever linker top-level may have detected, since
1933 # we'll use what we're building after installation anyway.
1934 AC_MSG_RESULT(newly built gas)
1936 _gcc_COMPUTE_GAS_VERSION
1937 in_tree_gas_is_elf=no
1938 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1939 || (grep 'obj_format = multi' ../gas/Makefile \
1940 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1942 in_tree_gas_is_elf=yes
1945 AC_MSG_RESULT($gcc_cv_as)
1949 # Identify the linker which will work hand-in-glove with the newly
1950 # built GCC, so that we can examine its features. This is the linker
1951 # which will be driven by the driver program.
1953 # If build != host, and we aren't building gas in-tree, we identify a
1954 # build->target linker and hope that it will have the same features
1955 # as the host->target linker we'll be using.
1956 gcc_cv_gld_major_version=
1957 gcc_cv_gld_minor_version=
1958 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1959 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1961 AS_VAR_SET_IF(gcc_cv_ld,, [
1962 if test -x "$DEFAULT_LINKER"; then
1963 gcc_cv_ld="$DEFAULT_LINKER"
1964 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1965 && test -f ../ld/Makefile \
1966 && test x$build = x$host; then
1967 gcc_cv_ld=../ld/ld-new$build_exeext
1968 elif test -x collect-ld$build_exeext; then
1969 # Build using linker in the current directory.
1970 gcc_cv_ld=./collect-ld$build_exeext
1971 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1972 gcc_cv_ld="$LD_FOR_TARGET"
1974 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1977 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1978 PLUGIN_LD=`basename $gcc_cv_ld`
1979 AC_ARG_WITH(plugin-ld,
1980 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1981 [if test x"$withval" != x; then
1982 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1983 PLUGIN_LD="$withval"
1985 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1986 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1988 # Check to see if we are using gold instead of ld
1989 AC_MSG_CHECKING(whether we are using gold)
1991 if test x$gcc_cv_ld != x; then
1992 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1993 | grep "GNU gold" > /dev/null; then
1997 AC_MSG_RESULT($ld_is_gold)
1999 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2000 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2001 case "$ORIGINAL_LD_FOR_TARGET" in
2002 ./collect-ld | ./collect-ld$build_exeext) ;;
2003 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2006 AC_MSG_CHECKING(what linker to use)
2007 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2008 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2009 # Single tree build which includes ld. We want to prefer it
2010 # over whatever linker top-level may have detected, since
2011 # we'll use what we're building after installation anyway.
2012 AC_MSG_RESULT(newly built ld)
2014 in_tree_ld_is_elf=no
2015 if (grep 'EMUL = .*elf' ../ld/Makefile \
2016 || grep 'EMUL = .*linux' ../ld/Makefile \
2017 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2018 in_tree_ld_is_elf=yes
2019 elif test "$ld_is_gold" = yes; then
2020 in_tree_ld_is_elf=yes
2022 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
2025 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2026 if test x$gcc_cv_gld_version != x; then
2030 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2031 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2034 AC_MSG_RESULT($gcc_cv_ld)
2038 # Figure out what nm we will be using.
2039 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2040 AS_VAR_SET_IF(gcc_cv_nm,, [
2041 if test -f $gcc_cv_binutils_srcdir/configure.in \
2042 && test -f ../binutils/Makefile \
2043 && test x$build = x$host; then
2044 gcc_cv_nm=../binutils/nm-new$build_exeext
2045 elif test -x nm$build_exeext; then
2046 gcc_cv_nm=./nm$build_exeext
2047 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2048 gcc_cv_nm="$NM_FOR_TARGET"
2050 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2053 AC_MSG_CHECKING(what nm to use)
2054 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2055 # Single tree build which includes binutils.
2056 AC_MSG_RESULT(newly built nm)
2059 AC_MSG_RESULT($gcc_cv_nm)
2063 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2064 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2065 case "$ORIGINAL_NM_FOR_TARGET" in
2066 ./nm | ./nm$build_exeext) ;;
2067 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2071 # Figure out what objdump we will be using.
2072 AS_VAR_SET_IF(gcc_cv_objdump,, [
2073 if test -f $gcc_cv_binutils_srcdir/configure.in \
2074 && test -f ../binutils/Makefile \
2075 && test x$build = x$host; then
2076 # Single tree build which includes binutils.
2077 gcc_cv_objdump=../binutils/objdump$build_exeext
2078 elif test -x objdump$build_exeext; then
2079 gcc_cv_objdump=./objdump$build_exeext
2080 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2081 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2083 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2086 AC_MSG_CHECKING(what objdump to use)
2087 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2088 # Single tree build which includes binutils.
2089 AC_MSG_RESULT(newly built objdump)
2090 elif test x$gcc_cv_objdump = x; then
2091 AC_MSG_RESULT(not found)
2093 AC_MSG_RESULT($gcc_cv_objdump)
2096 # Figure out what readelf we will be using.
2097 AS_VAR_SET_IF(gcc_cv_readelf,, [
2098 if test -f $gcc_cv_binutils_srcdir/configure.in \
2099 && test -f ../binutils/Makefile \
2100 && test x$build = x$host; then
2101 # Single tree build which includes binutils.
2102 gcc_cv_readelf=../binutils/readelf$build_exeext
2103 elif test -x readelf$build_exeext; then
2104 gcc_cv_readelf=./readelf$build_exeext
2106 AC_PATH_PROG(gcc_cv_readelf, readelf)
2109 AC_MSG_CHECKING(what readelf to use)
2110 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2111 # Single tree build which includes binutils.
2112 AC_MSG_RESULT(newly built readelf)
2113 elif test x$gcc_cv_readelf = x; then
2114 AC_MSG_RESULT(not found)
2116 AC_MSG_RESULT($gcc_cv_readelf)
2119 # Figure out what assembler alignment features are present.
2120 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2124 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2125 [Define if your assembler supports .balign and .p2align.])])
2127 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2130 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2131 [Define if your assembler supports specifying the maximum number
2132 of bytes to skip when using the GAS .p2align command.])])
2134 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2137 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2138 [Define if your assembler supports .literal16.])])
2140 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2142 [conftest_label1: .word 0
2144 conftest_label2: .word 0
2146 [if test x$gcc_cv_nm != x; then
2147 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2148 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2149 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2151 else gcc_cv_as_subsection_m1=yes
2153 rm -f conftest.nm1 conftest.nm2
2155 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2156 [Define if your assembler supports .subsection and .subsection -1 starts
2157 emitting at the beginning of your section.])])
2159 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2162 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2164 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2166 [ .weakref foobar, barfnot],,
2167 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2169 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2172 .NSUBSPA $CODE$,COMDAT],,
2173 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2175 # .hidden needs to be supported in both the assembler and the linker,
2176 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2177 # This is irritatingly difficult to feature test for; we have to check the
2178 # date string after the version number. If we've got an in-tree
2179 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2181 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2182 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2186 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2187 # STV_HIDDEN, so disable .hidden support if so.
2190 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2191 cat > conftest.s <<EOF
2198 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2199 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2200 grep '\.hidden default' > /dev/null; then
2203 gcc_cv_as_hidden=yes
2206 # Assume bug is present if objdump is missing.
2211 gcc_cv_as_hidden=yes
2215 # gnu_indirect_function type is an extension proposed at
2216 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2217 # selection of function implementation
2218 AC_ARG_ENABLE(gnu-indirect-function,
2219 [AS_HELP_STRING([--enable-gnu-indirect-function],
2220 [enable the use of the @gnu_indirect_function to glibc systems])],
2221 [case $enable_gnu_indirect_function in
2223 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2224 Valid choices are 'yes' and 'no'.]) ;;
2226 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2227 if test x$enable_gnu_indirect_function = xyes; then
2228 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2229 [Define if your system supports gnu indirect functions.])
2233 if test $in_tree_ld != yes ; then
2234 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2235 if echo "$ld_ver" | grep GNU > /dev/null; then
2236 if test x"$ld_is_gold" = xyes; then
2237 # GNU gold --version looks like this:
2239 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2241 # We extract the binutils version which is more familiar and specific
2242 # than the gold version.
2243 ld_vers=`echo $ld_ver | sed -n \
2244 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2246 # GNU ld --version looks like this:
2248 # GNU ld (GNU Binutils) 2.21.51.20110225
2249 ld_vers=`echo $ld_ver | sed -n \
2250 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2252 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2253 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2254 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2255 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2260 # Solaris 2 ld -V output looks like this for a regular version:
2262 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2264 # but test versions add stuff at the end:
2266 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2268 ld_ver=`$gcc_cv_ld -V 2>&1`
2269 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2270 ld_vers=`echo $ld_ver | sed -n \
2271 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2272 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2273 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2281 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2282 [[if test $in_tree_ld = yes ; then
2284 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2285 && test $in_tree_ld_is_elf = yes; then
2286 gcc_cv_ld_hidden=yes
2289 gcc_cv_ld_hidden=yes
2290 if test x"$ld_is_gold" = xyes; then
2292 elif echo "$ld_ver" | grep GNU > /dev/null; then
2293 if test 0"$ld_date" -lt 20020404; then
2294 if test -n "$ld_date"; then
2295 # If there was date string, but was earlier than 2002-04-04, fail
2297 elif test -z "$ld_vers"; then
2298 # If there was no date string nor ld version number, something is wrong
2301 test -z "$ld_vers_patch" && ld_vers_patch=0
2302 if test "$ld_vers_major" -lt 2; then
2304 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2305 gcc_cv_ld_hidden="no"
2306 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2313 hppa64*-*-hpux* | ia64*-*-hpux*)
2314 gcc_cv_ld_hidden=yes
2317 # .hidden support was backported to Solaris 8, starting with ld
2319 if test "$ld_vers_minor" -ge 276; then
2320 gcc_cv_ld_hidden=yes
2325 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2326 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2327 # .symbolic was only added in Solaris 9 12/02.
2328 gcc_cv_ld_hidden=yes
2336 libgcc_visibility=no
2337 AC_SUBST(libgcc_visibility)
2338 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2339 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2340 libgcc_visibility=yes
2341 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2342 [Define if your assembler and linker support .hidden.])
2345 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2346 gcc_cv_ld_ro_rw_mix=unknown
2347 if test $in_tree_ld = yes ; then
2348 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2349 && test $in_tree_ld_is_elf = yes; then
2350 gcc_cv_ld_ro_rw_mix=read-write
2352 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2353 echo '.section myfoosect, "a"' > conftest1.s
2354 echo '.section myfoosect, "aw"' > conftest2.s
2355 echo '.byte 1' >> conftest2.s
2356 echo '.section myfoosect, "a"' > conftest3.s
2357 echo '.byte 0' >> conftest3.s
2358 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2359 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2360 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2361 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2362 conftest2.o conftest3.o > /dev/null 2>&1; then
2363 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2364 | sed -e '/myfoosect/!d' -e N`
2365 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2366 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2367 gcc_cv_ld_ro_rw_mix=read-only
2369 gcc_cv_ld_ro_rw_mix=read-write
2374 rm -f conftest.* conftest[123].*
2377 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2378 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2379 [Define if your linker links a mix of read-only
2380 and read-write sections into a read-write section.])
2382 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2384 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2385 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2393 [[# GAS versions before 2.11 do not support uleb128,
2394 # despite appearing to.
2395 # ??? There exists an elf-specific test that will crash
2396 # the assembler. Perhaps it's better to figure out whether
2397 # arbitrary sections are supported and try the test.
2398 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2399 if echo "$as_ver" | grep GNU > /dev/null; then
2400 as_vers=`echo $as_ver | sed -n \
2401 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2402 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2403 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2404 if test $as_major -eq 2 && test $as_minor -lt 11
2406 else gcc_cv_as_leb128=yes
2409 [AC_DEFINE(HAVE_AS_LEB128, 1,
2410 [Define if your assembler supports .sleb128 and .uleb128.])])
2412 # Check if we have assembler support for unwind directives.
2413 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2420 .cfi_escape 1, 2, 3, 4, 5
2424 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2425 # read-only and read-write sections, we need to make sure that the
2426 # assembler used emits read-write .eh_frame sections.
2427 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2428 if test "x$gcc_cv_objdump" != x; then
2429 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2430 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2431 gcc_cv_as_cfi_directive=no
2434 i?86-*-solaris2.1[[0-9]]*)
2435 # On Solaris/x86, make sure that GCC and gas agree on using
2436 # read-only .eh_frame sections for 64-bit.
2437 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2438 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2439 sed -e /.eh_frame/!d -e N | \
2440 grep READONLY > /dev/null; then
2441 gcc_cv_as_cfi_directive=yes
2443 gcc_cv_as_cfi_directive=no
2447 gcc_cv_as_cfi_directive=yes
2452 # no objdump, err on the side of caution
2453 gcc_cv_as_cfi_directive=no
2456 gcc_cv_as_cfi_directive=yes
2460 gcc_cv_as_cfi_directive=yes
2463 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2464 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2468 .cfi_adjust_cfa_offset 64
2470 .cfi_adjust_cfa_offset 128
2473 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2474 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2475 gcc_cv_as_cfi_advance_working=yes
2479 # no objdump, err on the side of caution
2480 gcc_cv_as_cfi_advance_working=no
2482 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2483 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2484 [`if test $gcc_cv_as_cfi_directive = yes \
2485 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2486 [Define 0/1 if your assembler supports CFI directives.])
2488 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2489 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2490 gcc_cv_as_cfi_personality_directive, ,,
2493 .cfi_personality 0, symbol
2495 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2496 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2497 then echo 1; else echo 0; fi`],
2498 [Define 0/1 if your assembler supports .cfi_personality.])
2500 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2501 gcc_cv_as_cfi_sections_directive, ,,
2503 .cfi_sections .debug_frame, .eh_frame
2507 win32 | pe | cygwin* | mingw32* | uwin*)
2508 # Need to check that we generated the correct relocation for the
2509 # .debug_frame section. This was fixed for binutils 2.21.
2510 gcc_cv_as_cfi_sections_directive=no
2511 if test "x$gcc_cv_objdump" != x; then
2512 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2513 grep secrel > /dev/null; then
2514 gcc_cv_as_cfi_sections_directive=yes
2519 gcc_cv_as_cfi_sections_directive=yes
2522 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2523 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2524 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2525 then echo 1; else echo 0; fi`],
2526 [Define 0/1 if your assembler supports .cfi_sections.])
2528 # GAS versions up to and including 2.11.0 may mis-optimize
2530 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2538 .section .eh_frame,"aw",@progbits
2540 .4byte .LECIE1-.LSCIE1
2554 .4byte .LEFDE1-.LASFDE1
2556 .4byte .LASFDE1-__FRAME_BEGIN__
2564 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2565 cat > conftest.lit <<EOF
2566 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2567 0010 01000000 12000000 18000000 00000000 ................
2568 0020 08000000 04080000 0044 .........D @&t@
2570 cat > conftest.big <<EOF
2571 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2572 0010 00000001 00000012 00000018 00000000 ................
2573 0020 00000008 04000000 0844 .........D @&t@
2575 # If the assembler didn't choke, and we can objdump,
2576 # and we got the correct data, then succeed.
2577 # The text in the here-document typically retains its unix-style line
2578 # endings, while the output of objdump will use host line endings.
2579 # Therefore, use diff -b for the comparisons.
2580 if test x$gcc_cv_objdump != x \
2581 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2582 | tail -3 > conftest.got \
2583 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2584 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2586 gcc_cv_as_eh_frame=yes
2587 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2588 gcc_cv_as_eh_frame=buggy
2590 # Uh oh, what do we do now?
2591 gcc_cv_as_eh_frame=no
2594 if test $gcc_cv_as_eh_frame = buggy; then
2595 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2596 [Define if your assembler mis-optimizes .eh_frame data.])
2599 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2600 [elf,2,12,0], [--fatal-warnings],
2601 [.section .rodata.str, "aMS", @progbits, 1])
2602 if test $gcc_cv_as_shf_merge = no; then
2603 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2604 [elf,2,12,0], [--fatal-warnings],
2605 [.section .rodata.str, "aMS", %progbits, 1])
2607 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2608 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2609 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2611 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2612 [elf,2,16,0], [--fatal-warnings],
2613 [.section .text,"axG",@progbits,.foo,comdat])
2614 if test $gcc_cv_as_comdat_group = yes; then
2615 gcc_cv_as_comdat_group_percent=no
2617 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2618 [elf,2,16,0], [--fatal-warnings],
2619 [.section .text,"axG",%progbits,.foo,comdat])
2621 if test x"$ld_is_gold" = xyes; then
2623 elif test $in_tree_ld = yes ; then
2625 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2626 && test $in_tree_ld_is_elf = yes; then
2629 elif echo "$ld_ver" | grep GNU > /dev/null; then
2631 if test 0"$ld_date" -lt 20050308; then
2632 if test -n "$ld_date"; then
2633 # If there was date string, but was earlier than 2005-03-08, fail
2635 elif test "$ld_vers_major" -lt 2; then
2637 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2644 *-*-solaris2.1[1-9]*)
2645 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2646 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2649 # FIXME: Maybe need to refine later when COMDAT group support with
2650 # Sun as is implemented.
2651 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2658 # Assume linkers other than GNU ld don't support COMDAT group.
2664 # Allow overriding the automatic COMDAT group tests above.
2665 AC_ARG_ENABLE(comdat,
2666 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2667 [comdat_group="$enable_comdat"])
2668 if test $comdat_group = no; then
2669 gcc_cv_as_comdat_group=no
2670 gcc_cv_as_comdat_group_percent=no
2672 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2673 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2674 [Define 0/1 if your assembler and linker support COMDAT groups.])
2676 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2677 gcc_cv_as_discriminator,
2681 .loc 1 1 0 discriminator 1],,
2682 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2683 [Define if your assembler supports the .loc discriminator sub-directive.])])
2685 # Thread-local storage - the check is heavily parameterized.
2694 .section ".tdata","awT",@progbits
2697 ldq $27,__tls_get_addr($29) !literal!1
2698 lda $16,foo($29) !tlsgd!1
2699 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2700 ldq $27,__tls_get_addr($29) !literal!2
2701 lda $16,foo($29) !tlsldm!2
2702 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2703 ldq $1,foo($29) !gotdtprel
2704 ldah $2,foo($29) !dtprelhi
2705 lda $3,foo($2) !dtprello
2706 lda $4,foo($29) !dtprel
2707 ldq $1,foo($29) !gottprel
2708 ldah $2,foo($29) !tprelhi
2709 lda $3,foo($2) !tprello
2710 lda $4,foo($29) !tprel'
2713 tls_as_opt=--fatal-warnings
2715 cris-*-*|crisv32-*-*)
2717 .section ".tdata","awT",@progbits
2724 tls_as_opt=--fatal-warnings
2728 .section ".tdata","awT",@progbits
2740 .section ".tdata","awT",@progbits
2744 addil LT%foo-$tls_gdidx$,gp
2745 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2748 addil LT%foo-$tls_ldidx$,gp
2750 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2751 addil LR%foo-$tls_dtpoff$,%ret0
2752 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2754 addil LT%foo-$tls_ieoff$,gp
2755 ldw RT%foo-$tls_ieoff$(%r1),%t2
2758 addil LR%foo-$tls_leoff$,%t1
2759 ldo RR%foo-$tls_leoff$(%r1),%t2'
2762 tls_as_opt=--fatal-warnings
2766 .section ".tdata","awT",%progbits
2779 i[34567]86-*-solaris2.*)
2781 tga_func=___tls_get_addr
2787 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2789 .section .tdata,"awt",@progbits'
2793 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2794 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2798 .section ".tdata","awT",@progbits'
2801 tls_as_opt="--fatal-warnings"
2803 conftest_s="$conftest_s
2807 leal foo@tlsgd(,%ebx,1), %eax
2808 leal foo@tlsldm(%ebx), %eax
2809 leal foo@dtpoff(%eax), %edx
2810 movl foo@gottpoff(%ebx), %eax
2811 subl foo@gottpoff(%ebx), %eax
2812 addl foo@gotntpoff(%ebx), %eax
2813 movl foo@indntpoff, %eax
2814 movl \$foo@tpoff, %eax
2815 subl \$foo@tpoff, %eax
2816 leal foo@ntpoff(%ecx), %eax"
2820 .section ".tdata","awT",@progbits
2824 leaq foo@TLSGD(%rip), %rdi
2825 leaq foo@TLSLD(%rip), %rdi
2826 leaq foo@DTPOFF(%rax), %rdx
2827 movq foo@GOTTPOFF(%rip), %rax
2828 movq $foo@TPOFF, %rax'
2831 tls_as_opt=--fatal-warnings
2835 .section ".tdata","awT",@progbits
2838 addl r16 = @ltoff(@dtpmod(foo#)), gp
2839 addl r17 = @ltoff(@dtprel(foo#)), gp
2840 addl r18 = @ltoff(@tprel(foo#)), gp
2841 addl r19 = @dtprel(foo#), gp
2842 adds r21 = @dtprel(foo#), r13
2843 movl r23 = @dtprel(foo#)
2844 addl r20 = @tprel(foo#), gp
2845 adds r22 = @tprel(foo#), r13
2846 movl r24 = @tprel(foo#)'
2849 tls_as_opt=--fatal-warnings
2853 .section .tdata,"awT",@progbits
2857 addiu $4, $28, %tlsgd(x)
2858 addiu $4, $28, %tlsldm(x)
2859 lui $4, %dtprel_hi(x)
2860 addiu $4, $4, %dtprel_lo(x)
2861 lw $4, %gottprel(x)($28)
2862 lui $4, %tprel_hi(x)
2863 addiu $4, $4, %tprel_lo(x)'
2866 tls_as_opt='-32 --fatal-warnings'
2870 .section .tdata,"awT",@progbits
2875 move.l x@TLSGD(%a5),%a0
2876 move.l x@TLSLDM(%a5),%a0
2877 move.l x@TLSLDO(%a5),%a0
2878 move.l x@TLSIE(%a5),%a0
2879 move.l x@TLSLE(%a5),%a0'
2882 tls_as_opt='--fatal-warnings'
2886 .section ".tdata","awT",@progbits
2894 addi 3,31,ld0@got@tlsgd
2896 addi 3,31,x1@got@tlsld
2899 addis 9,3,x2@dtprel@ha
2900 addi 9,9,x2@dtprel@l
2901 lwz 9,x3@got@tprel(31)
2904 addis 9,2,x2@tprel@ha
2905 addi 9,9,x2@tprel@l'
2908 tls_as_opt="-a32 --fatal-warnings"
2912 .section ".tdata","awT",@progbits
2920 addi 3,2,ld0@got@tlsgd
2926 addi 3,2,x1@got@tlsld
2932 addis 9,3,x2@dtprel@ha
2933 addi 9,9,x2@dtprel@l
2936 ld 9,x3@got@dtprel(2)
2942 tls_as_opt="-a64 --fatal-warnings"
2946 .section ".tdata","awT",@progbits
2955 l %r1,foo@GOTNTPOFF(%r12)
2956 l %r1,0(%r1):tls_load:foo
2957 bas %r14,0(%r1,%r13):tls_gdcall:foo
2958 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2961 tls_as_opt="-m31 --fatal-warnings"
2965 .section ".tdata","awT",@progbits
2973 lg %r1,foo@GOTNTPOFF(%r12)
2974 larl %r1,foo@INDNTPOFF
2975 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2976 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2979 tls_as_opt="-m64 -Aesame --fatal-warnings"
2981 sh-*-* | sh[34]-*-*)
2983 .section ".tdata","awT",@progbits
2993 tls_as_opt=--fatal-warnings
2997 sparc*-sun-solaris2.*)
2999 tga_func=__tls_get_addr
3005 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3007 .section ".tdata",#alloc,#write,#tls'
3012 .section ".tdata","awT",@progbits'
3015 tls_as_opt="-32 --fatal-warnings"
3017 conftest_s="$conftest_s
3020 sethi %tgd_hi22(foo), %o0
3021 add %o0, %tgd_lo10(foo), %o1
3022 add %l7, %o1, %o0, %tgd_add(foo)
3023 call __tls_get_addr, %tgd_call(foo)
3024 sethi %tldm_hi22(foo), %l1
3025 add %l1, %tldm_lo10(foo), %l2
3026 add %l7, %l2, %o0, %tldm_add(foo)
3027 call __tls_get_addr, %tldm_call(foo)
3028 sethi %tldo_hix22(foo), %l3
3029 xor %l3, %tldo_lox10(foo), %l4
3030 add %o0, %l4, %l5, %tldo_add(foo)
3031 sethi %tie_hi22(foo), %o3
3032 add %o3, %tie_lo10(foo), %o3
3033 ld [%l7 + %o3], %o2, %tie_ld(foo)
3034 add %g7, %o2, %o4, %tie_add(foo)
3035 sethi %tle_hix22(foo), %l1
3036 xor %l1, %tle_lox10(foo), %o5
3037 ld [%g7 + %o5], %o1"
3041 .section ".tdata","awT",@progbits
3044 movi a8, foo@TLSFUNC
3045 movi a10, foo@TLSARG
3046 callx8.tls a8, foo@TLSCALL'
3053 if test "x$enable_tls" = xno ; then
3054 : # TLS explicitly disabled.
3055 elif test "x$enable_tls" = xyes ; then
3056 set_have_as_tls=yes # TLS explicitly enabled.
3057 elif test -z "$tls_first_major"; then
3058 : # If we don't have a check, assume no support.
3060 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3061 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3062 [set_have_as_tls=yes])
3066 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3067 # with TLS support are in use, native TLS cannot work.
3071 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3072 # gld with TLS support are in use, native TLS cannot work.
3075 # TLS was introduced in the Solaris 9 FCS release and backported to
3076 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3077 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3078 # ld and GCC don't support any longer.
3080 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3082 # Check ld and ld.so.1 TLS support.
3083 if echo "$ld_ver" | grep GNU > /dev/null; then
3084 # Assume all interesting versions of GNU ld have TLS support.
3085 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3089 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3091 min_tls_ld_vers_minor=280
3093 # Solaris 8/SPARC ld has TLS support since version 1.272.
3094 sparc*-*-solaris2.8)
3095 min_tls_ld_vers_minor=272
3097 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3099 min_tls_ld_vers_minor=374
3101 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3102 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3103 min_tls_ld_vers_minor=343
3106 if test "$ld_vers_major" -gt 1 || \
3107 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3113 AC_MSG_RESULT($ld_tls_support)
3116 save_LDFLAGS="$LDFLAGS"
3120 AC_MSG_CHECKING(alternate thread library)
3122 # TLS support was backported to Solaris 8 patches, but only lives in
3123 # the alternate thread library which became the default in Solaris 9.
3124 # We want to always use that, irrespective of TLS support.
3126 # Take multilib subdir into account. There's no spec to handle
3127 # this. The 64 symlink exists since Solaris 8.
3128 lwp_dir=/usr/lib/lwp
3129 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3130 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3137 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3138 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3139 [Define to the linker flags to use for -pthread.])
3140 AC_MSG_RESULT($lwp_dir)
3142 AC_MSG_CHECKING(library containing $tga_func)
3143 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3144 # (32-bit x86) only lived in libthread, so check for that. Keep
3145 # set_have_as_tls if found, disable if not.
3146 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3147 # Clear LIBS if we cannot support TLS.
3148 if test $set_have_as_tls = no; then
3151 # Always define LIB_TLS_SPEC, even without TLS support.
3152 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3153 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3154 AC_MSG_RESULT($LIBS)
3157 LDFLAGS="$save_LDFLAGS"
3160 if test $set_have_as_tls = yes ; then
3161 AC_DEFINE(HAVE_AS_TLS, 1,
3162 [Define if your assembler and linker support thread-local storage.])
3165 # Target-specific assembler checks.
3167 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3168 gcc_cv_ld_static_dynamic=no
3169 gcc_cv_ld_static_option='-Bstatic'
3170 gcc_cv_ld_dynamic_option='-Bdynamic'
3171 if test $in_tree_ld = yes ; then
3172 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3173 gcc_cv_ld_static_dynamic=yes
3175 elif test x$gcc_cv_ld != x; then
3176 # Check if linker supports -Bstatic/-Bdynamic option
3177 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3178 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3179 gcc_cv_ld_static_dynamic=yes
3182 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3184 gcc_cv_ld_static_dynamic=yes
3185 gcc_cv_ld_static_option="-noso"
3186 gcc_cv_ld_dynamic_option="-so_archive"
3188 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3190 gcc_cv_ld_static_dynamic=yes
3192 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3194 gcc_cv_ld_static_dynamic=yes
3199 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3200 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3201 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3202 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3203 [Define to the linker option to disable use of shared objects.])
3204 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3205 [Define to the linker option to enable use of shared objects.])
3207 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3209 if test x"$demangler_in_ld" = xyes; then
3210 AC_MSG_CHECKING(linker --demangle support)
3211 gcc_cv_ld_demangle=no
3212 if test $in_tree_ld = yes; then
3213 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3214 gcc_cv_ld_demangle=yes
3216 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3217 # Check if the GNU linker supports --demangle option
3218 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3219 gcc_cv_ld_demangle=yes
3222 if test x"$gcc_cv_ld_demangle" = xyes; then
3223 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3224 [Define if your linker supports --demangle option.])
3226 AC_MSG_RESULT($gcc_cv_ld_demangle)
3229 AC_MSG_CHECKING(linker plugin support)
3231 if test -f liblto_plugin.la; then
3232 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3233 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
3235 elif test "$ld_is_gold" = yes -a "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -eq 20; then
3239 elif test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld" && echo "$ld_ver" | grep GNU > /dev/null; then
3240 # Require GNU ld or gold 2.21+ for plugin support by default.
3241 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3243 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3244 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3247 elif test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" != x"$gcc_cv_ld"; then
3248 # Allow -fuse-linker-plugin if plugin linker differs from
3249 # default/specified linker.
3253 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3254 [Define to the level of your linker's plugin support.])
3255 AC_MSG_RESULT($gcc_cv_lto_plugin)
3258 # All TARGET_ABI_OSF targets.
3259 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3260 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3261 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3264 extbl $3, $2, $3 !lituse_bytoff!1
3265 ldq $2, a($29) !literal!1
3266 ldq $4, b($29) !literal!2
3267 ldq_u $3, 0($2) !lituse_base!1
3268 ldq $27, f($29) !literal!5
3269 jsr $26, ($27), f !lituse_jsr!5
3270 ldah $29, 0($26) !gpdisp!3
3271 lda $0, c($29) !gprel
3272 ldah $1, d($29) !gprelhigh
3273 lda $1, d($1) !gprellow
3274 lda $29, 0($29) !gpdisp!3],,
3275 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3276 [Define if your assembler supports explicit relocations.])])
3277 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3278 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3281 ldq $27, a($29) !literal!1
3282 jsr $26, ($27), a !lituse_jsrdirect!1],,
3283 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3284 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3288 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3289 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3290 [-no-mul-bug-abort], [.text],,
3291 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3292 [Define if your assembler supports the -no-mul-bug-abort option.])])
3296 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3297 [.register %g2, #scratch],,
3298 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3299 [Define if your assembler supports .register.])])
3301 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3303 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3304 [Define if your assembler supports -relax option.])])
3306 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3307 gcc_cv_as_sparc_gotdata_op,,
3313 sethi %gdop_hix22(foo), %g1
3314 xor %g1, %gdop_lox10(foo), %g1
3315 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3316 [if test x$gcc_cv_ld != x \
3317 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3318 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3319 if test x$gcc_cv_objdump != x; then
3320 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3321 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3322 gcc_cv_as_sparc_gotdata_op=no
3324 gcc_cv_as_sparc_gotdata_op=yes
3328 gcc_cv_as_sparc_gotdata_op=yes
3332 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3333 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3335 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3336 gcc_cv_as_sparc_ua_pcrel,,
3344 .uaword %r_disp32(foo)],
3345 [if test x$gcc_cv_ld != x \
3346 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3347 gcc_cv_as_sparc_ua_pcrel=yes
3350 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3351 [Define if your assembler and linker support unaligned PC relative relocs.])
3353 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3354 gcc_cv_as_sparc_ua_pcrel_hidden,,
3359 .uaword %r_disp32(foo)
3360 .byte 0x32, 0x33, 0x34
3365 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3366 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3367 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3368 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3369 if $gcc_cv_objdump -R conftest 2> /dev/null \
3370 | grep 'DISP32' > /dev/null 2>&1; then
3373 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3377 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3378 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3379 ]) # unaligned pcrel relocs
3381 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3382 gcc_cv_as_sparc_offsetable_lo10,,
3385 or %g1, %lo(ab) + 12, %g1
3386 or %g1, %lo(ab + 12), %g1],
3387 [if test x$gcc_cv_objdump != x \
3388 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3389 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3390 gcc_cv_as_sparc_offsetable_lo10=yes
3392 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3393 [Define if your assembler supports offsetable %lo().])])
3397 i[34567]86-*-* | x86_64-*-*)
3401 # Full C++ conformance when using a shared libstdc++-v3 requires some
3402 # support from the Cygwin DLL, which in more recent versions exports
3403 # wrappers to aid in interposing and redirecting operators new, delete,
3404 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3405 # are configuring for a version of Cygwin that exports the wrappers.
3406 if test x$host = x$target; then
3407 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3409 # Can't check presence of libc functions during cross-compile, so
3410 # we just have to assume we're building for an up-to-date target.
3411 gcc_ac_cygwin_dll_wrappers=yes
3413 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3414 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3415 [Define if you want to generate code by default that assumes that the
3416 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3419 cygwin* | pe | mingw32*)
3420 # Recent binutils allows the three-operand form of ".comm" on PE. This
3421 # definition is used unconditionally to initialise the default state of
3422 # the target option variable that governs usage of the feature.
3423 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3424 [2,19,52],,[.comm foo,1,32])
3425 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3426 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3427 [Define if your assembler supports specifying the alignment
3428 of objects allocated using the GAS .comm command.])
3429 # Used for DWARF 2 in PE
3430 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3431 gcc_cv_as_ix86_pe_secrel32,
3437 [if test x$gcc_cv_ld != x \
3438 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3439 gcc_cv_as_ix86_pe_secrel32=yes
3442 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3443 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3444 # Test if the assembler supports the extended form of the .section
3445 # directive that specifies section alignment. LTO support uses this,
3446 # but normally only after installation, so we warn but don't fail the
3447 # configure if LTO is enabled but the assembler does not support it.
3448 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3449 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3450 if test x$gcc_cv_as_section_has_align != xyes; then
3451 case ",$enable_languages," in
3453 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3460 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3461 gcc_cv_as_ix86_filds,,,
3462 [filds mem; fists mem],,
3463 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3464 [Define if your assembler uses filds and fists mnemonics.])])
3466 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3467 gcc_cv_as_ix86_fildq,,,
3468 [fildq mem; fistpq mem],,
3469 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3470 [Define if your assembler uses fildq and fistq mnemonics.])])
3472 gcc_GAS_CHECK_FEATURE([cmov syntax],
3473 gcc_cv_as_ix86_cmov_sun_syntax,,,
3474 [cmovl.l %edx, %eax],,
3475 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3476 [Define if your assembler supports the Sun syntax for cmov.])])
3478 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3479 gcc_cv_as_ix86_ffreep,,,
3481 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3482 [Define if your assembler supports the ffreep mnemonic.])])
3484 gcc_GAS_CHECK_FEATURE([.quad directive],
3485 gcc_cv_as_ix86_quad,,,
3487 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3488 [Define if your assembler supports the .quad directive.])])
3490 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3491 gcc_cv_as_ix86_sahf,,,
3494 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3495 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3497 gcc_GAS_CHECK_FEATURE([swap suffix],
3498 gcc_cv_as_ix86_swap,,,
3499 [movl.s %esp, %ebp],,
3500 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3501 [Define if your assembler supports the swap suffix.])])
3503 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3504 gcc_cv_as_ix86_diff_sect_delta,,,
3512 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3513 [Define if your assembler supports the subtraction of symbols in different sections.])])
3515 # These two are used unconditionally by i386.[ch]; it is to be defined
3516 # to 1 if the feature is present, 0 otherwise.
3517 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3518 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3524 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3525 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3526 [Define true if the assembler supports '.long foo@GOTOFF'.])
3528 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3529 gcc_cv_as_ix86_rep_lock_prefix,,,
3531 lock addl %edi, (%eax,%esi)
3532 lock orl $0, (%esp)],,
3533 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3534 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3539 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3540 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3542 addl r15 = @ltoffx(x#), gp
3544 ld8.mov r16 = [[r15]], x#],,
3545 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3546 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3552 *-*-aix*) conftest_s=' .machine "pwr5"
3556 gcc_GAS_CHECK_FEATURE([.machine directive support],
3557 gcc_cv_as_machine_directive,,,
3558 [ .machine ppc7400])
3559 if test x$gcc_cv_as_machine_directive != xyes; then
3560 echo "*** This target requires an assembler supporting \".machine\"" >&2
3561 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3562 test x$build = x$target && exit 1
3566 *) conftest_s=' .machine power4
3571 gcc_GAS_CHECK_FEATURE([mfcr field support],
3572 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3574 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3575 [Define if your assembler supports mfcr field.])])
3578 *-*-aix*) conftest_s=' .machine "pwr5"
3581 *) conftest_s=' .machine power5
3586 gcc_GAS_CHECK_FEATURE([popcntb support],
3587 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3589 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3590 [Define if your assembler supports popcntb field.])])
3593 *-*-aix*) conftest_s=' .machine "pwr5x"
3596 *) conftest_s=' .machine power5
3601 gcc_GAS_CHECK_FEATURE([fp round support],
3602 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3604 [AC_DEFINE(HAVE_AS_FPRND, 1,
3605 [Define if your assembler supports fprnd.])])
3608 *-*-aix*) conftest_s=' .machine "pwr6"
3611 *) conftest_s=' .machine power6
3616 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3617 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3619 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3620 [Define if your assembler supports mffgpr and mftgpr.])])
3623 *-*-aix*) conftest_s=' .csect .text[[PR]]
3625 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3629 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3630 *) conftest_s=' .text
3632 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3635 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3636 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3638 [AC_DEFINE(HAVE_AS_REL16, 1,
3639 [Define if your assembler supports R_PPC_REL16 relocs.])])
3642 *-*-aix*) conftest_s=' .machine "pwr6"
3645 *) conftest_s=' .machine power6
3650 gcc_GAS_CHECK_FEATURE([compare bytes support],
3651 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3653 [AC_DEFINE(HAVE_AS_CMPB, 1,
3654 [Define if your assembler supports cmpb.])])
3657 *-*-aix*) conftest_s=' .machine "pwr6"
3660 *) conftest_s=' .machine power6
3665 gcc_GAS_CHECK_FEATURE([decimal float support],
3666 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3668 [AC_DEFINE(HAVE_AS_DFP, 1,
3669 [Define if your assembler supports DFP instructions.])])
3672 *-*-aix*) conftest_s=' .machine "pwr7"
3675 *) conftest_s=' .machine power7
3680 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3681 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3683 [AC_DEFINE(HAVE_AS_VSX, 1,
3684 [Define if your assembler supports VSX instructions.])])
3687 *-*-aix*) conftest_s=' .machine "pwr7"
3690 *) conftest_s=' .machine power7
3695 gcc_GAS_CHECK_FEATURE([popcntd support],
3696 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3698 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3699 [Define if your assembler supports POPCNTD instructions.])])
3702 *-*-aix*) conftest_s=' .csect .text[[PR]]
3704 *) conftest_s=' .text
3708 gcc_GAS_CHECK_FEATURE([lwsync support],
3709 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3711 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3712 [Define if your assembler supports LWSYNC instructions.])])
3715 *-*-aix*) conftest_s=' .machine "476"
3718 *) conftest_s=' .machine "476"
3723 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3724 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3726 [AC_DEFINE(HAVE_AS_DCI, 1,
3727 [Define if your assembler supports the DCI/ICI instructions.])])
3729 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3730 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3731 [.gnu_attribute 4,1],,
3732 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3733 [Define if your assembler supports .gnu_attribute.])])
3735 gcc_GAS_CHECK_FEATURE([tls marker support],
3736 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3737 [ bl __tls_get_addr(x@tlsgd)],,
3738 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3739 [Define if your assembler supports arg info for __tls_get_addr.])])
3743 gcc_GAS_CHECK_FEATURE([.ref support],
3744 gcc_cv_as_aix_ref, [2.21.0],,
3745 [ .csect stuff[[rw]]
3751 [AC_DEFINE(HAVE_AS_REF, 1,
3752 [Define if your assembler supports .ref])])
3758 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3759 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3760 [ lw $4,%gp_rel(foo)($4)],,
3761 [if test x$target_cpu_default = x
3762 then target_cpu_default=MASK_EXPLICIT_RELOCS
3763 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3765 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3766 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3767 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3768 [Define if the assembler understands -mno-shared.])])
3770 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3771 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3772 [.gnu_attribute 4,1],,
3773 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3774 [Define if your assembler supports .gnu_attribute.])])
3776 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3777 gcc_cv_as_mips_dtprelword, [2,18,0],,
3778 [.section .tdata,"awT",@progbits
3782 .dtprelword x+0x8000],,
3783 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3784 [Define if your assembler supports .dtprelword.])])
3786 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3787 gcc_cv_as_mips_dspr1_mult,,,
3797 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3798 [Define if your assembler supports DSPR1 mult.])])
3800 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3801 gcc_cv_as_ld_jalr_reloc=no
3802 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3803 if test $in_tree_ld = yes ; then
3804 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3805 && test $in_tree_ld_is_elf = yes; then
3806 gcc_cv_as_ld_jalr_reloc=yes
3808 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3809 echo ' .ent x' > conftest.s
3810 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3811 echo ' ld $25,%call16(y)($28)' >> conftest.s
3812 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3813 echo '1: jalr $25' >> conftest.s
3814 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3815 echo '1: jalr $25' >> conftest.s
3816 echo ' .end x' >> conftest.s
3817 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3818 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3819 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3820 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3821 gcc_cv_as_ld_jalr_reloc=yes
3827 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3828 if test x$target_cpu_default = x; then
3829 target_cpu_default=MASK_RELAX_PIC_CALLS
3831 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3834 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3836 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3837 [gcc_cv_ld_mips_personality_relaxation],
3838 [gcc_cv_ld_mips_personality_relaxation=no
3839 if test $in_tree_ld = yes ; then
3840 if test "$gcc_cv_gld_major_version" -eq 2 \
3841 -a "$gcc_cv_gld_minor_version" -ge 21 \
3842 -o "$gcc_cv_gld_major_version" -gt 2; then
3843 gcc_cv_ld_mips_personality_relaxation=yes
3845 elif test x$gcc_cv_as != x \
3846 -a x$gcc_cv_ld != x \
3847 -a x$gcc_cv_readelf != x ; then
3848 cat > conftest.s <<EOF
3850 .cfi_personality 0x80,indirect_ptr
3857 .section .data,"aw",@progbits
3861 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3862 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3863 if $gcc_cv_readelf -d conftest 2>&1 \
3864 | grep TEXTREL > /dev/null 2>&1; then
3866 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3867 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3870 gcc_cv_ld_mips_personality_relaxation=yes
3874 rm -f conftest.s conftest.o conftest])
3875 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3876 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3877 [Define if your linker can relax absolute .eh_frame personality
3878 pointers into PC-relative form.])
3883 # Mips and HP-UX need the GNU assembler.
3884 # Linux on IA64 might be able to use the Intel assembler.
3887 mips*-*-* | *-*-hpux* )
3888 if test x$gas_flag = xyes \
3889 || test x"$host" != x"$build" \
3890 || test ! -x "$gcc_cv_as" \
3891 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3894 echo "*** This configuration requires the GNU assembler" >&2
3900 # ??? Not all targets support dwarf2 debug_line, even within a version
3901 # of gas. Moreover, we need to emit a valid instruction to trigger any
3902 # info to the output file. So, as supported targets are added to gas 2.11,
3903 # add some instruction here to (also) show we expect this might work.
3904 # ??? Once 2.11 is released, probably need to add first known working
3905 # version to the per-target configury.
3907 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3908 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3918 if test x"$insn" != x; then
3920 .file 1 \"conftest.s\"
3923 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3924 gcc_cv_as_dwarf2_debug_line,
3925 [elf,2,11,0],, [$conftest_s],
3926 [if test x$gcc_cv_objdump != x \
3927 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3928 | grep debug_line > /dev/null 2>&1; then
3929 gcc_cv_as_dwarf2_debug_line=yes
3932 # The .debug_line file table must be in the exact order that
3933 # we specified the files, since these indices are also used
3934 # by DW_AT_decl_file. Approximate this test by testing if
3935 # the assembler bitches if the same index is assigned twice.
3936 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3937 gcc_cv_as_dwarf2_file_buggy,,,
3941 if test $gcc_cv_as_dwarf2_debug_line = yes \
3942 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3943 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3944 [Define if your assembler supports dwarf2 .file/.loc directives,
3945 and preserves file table indices exactly as given.])
3948 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3949 gcc_cv_as_gdwarf2_flag,
3950 [elf,2,11,0], [--gdwarf2], [$insn],,
3951 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3952 [Define if your assembler supports the --gdwarf2 option.])])
3954 gcc_GAS_CHECK_FEATURE([--gstabs option],
3955 gcc_cv_as_gstabs_flag,
3956 [elf,2,11,0], [--gstabs], [$insn],
3957 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3958 # and warns about it, but still exits successfully. So check for
3960 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3962 else gcc_cv_as_gstabs_flag=yes
3964 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3965 [Define if your assembler supports the --gstabs option.])])
3967 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3968 gcc_cv_as_debug_prefix_map_flag,
3969 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3970 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3971 [Define if your assembler supports the --debug-prefix-map option.])])
3974 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3977 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3978 [Define if your assembler supports .lcomm with an alignment field.])])
3980 AC_ARG_ENABLE(gnu-unique-object,
3981 [AS_HELP_STRING([--enable-gnu-unique-object],
3982 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
3983 [case $enable_gnu_unique_object in
3985 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3986 Valid choices are 'yes' and 'no'.]) ;;
3988 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3990 [.type foo, @gnu_unique_object],,
3991 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3992 [[if test x$host = x$build -a x$host = x$target &&
3993 ldd --version 2>/dev/null &&
3994 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3995 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3996 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3997 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3998 if test "$glibcnum" -ge 2011 ; then
3999 enable_gnu_unique_object=yes
4002 if test x$enable_gnu_unique_object = xyes; then
4003 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4004 [Define if your assembler supports @gnu_unique_object.])
4007 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4008 [gcc_cv_as_line_zero],
4009 [gcc_cv_as_line_zero=no
4010 if test $in_tree_gas = yes; then
4011 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4012 elif test "x$gcc_cv_as" != x; then
4013 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4014 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4015 test "x`cat conftest.out`" = x
4017 gcc_cv_as_line_zero=yes
4019 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4020 cat conftest.s >&AS_MESSAGE_LOG_FD
4021 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4022 cat conftest.out >&AS_MESSAGE_LOG_FD
4024 rm -f conftest.o conftest.s conftest.out
4026 if test "x$gcc_cv_as_line_zero" = xyes; then
4027 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4028 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4031 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4032 gcc_cv_ld_eh_frame_hdr=no
4033 if test $in_tree_ld = yes ; then
4034 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4035 && test $in_tree_ld_is_elf = yes; then
4036 gcc_cv_ld_eh_frame_hdr=yes
4038 elif test x$gcc_cv_ld != x; then
4039 if echo "$ld_ver" | grep GNU > /dev/null; then
4040 # Check if linker supports --eh-frame-hdr option
4041 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4042 gcc_cv_ld_eh_frame_hdr=yes
4047 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4048 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4049 gcc_cv_ld_eh_frame_hdr=yes
4055 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4056 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4057 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4058 [Define if your linker supports .eh_frame_hdr.])
4060 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4062 AC_MSG_CHECKING(linker position independent executable support)
4064 if test $in_tree_ld = yes ; then
4065 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4066 && test $in_tree_ld_is_elf = yes; then
4069 elif test x$gcc_cv_ld != x; then
4070 # Check if linker supports -pie option
4071 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4075 if test x"$gcc_cv_ld_pie" = xyes; then
4076 AC_DEFINE(HAVE_LD_PIE, 1,
4077 [Define if your linker supports -pie option.])
4079 AC_MSG_RESULT($gcc_cv_ld_pie)
4081 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4082 gcc_cv_ld_eh_gc_sections=no
4083 if test $in_tree_ld = yes ; then
4084 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4085 && test $in_tree_ld_is_elf = yes; then
4086 gcc_cv_ld_eh_gc_sections=yes
4088 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4089 cat > conftest.s <<EOF
4092 .type _start, @function
4095 .size _start, .-_start
4096 .section .text.foo,"ax",@progbits
4097 .type foo, @function
4101 .section .gcc_except_table.foo,"a",@progbits
4104 .section .eh_frame,"a",@progbits
4107 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4108 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4109 | grep "gc-sections option ignored" > /dev/null; then
4110 gcc_cv_ld_eh_gc_sections=no
4111 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4112 | grep gcc_except_table > /dev/null; then
4113 gcc_cv_ld_eh_gc_sections=yes
4114 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4115 if test x$gcc_cv_as_comdat_group != xyes; then
4116 gcc_cv_ld_eh_gc_sections=no
4117 cat > conftest.s <<EOF
4120 .type _start, @function
4123 .size _start, .-_start
4124 .section .gnu.linkonce.t.foo,"ax",@progbits
4125 .type foo, @function
4129 .section .gcc_except_table.foo,"a",@progbits
4132 .section .eh_frame,"a",@progbits
4135 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4136 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4137 | grep "gc-sections option ignored" > /dev/null; then
4138 gcc_cv_ld_eh_gc_sections=no
4139 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4140 | grep gcc_except_table > /dev/null; then
4141 gcc_cv_ld_eh_gc_sections=yes
4147 rm -f conftest.s conftest.o conftest
4151 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4152 gcc_cv_ld_eh_gc_sections=no
4155 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4156 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4157 [Define if your linker supports garbage collection of
4158 sections in presence of EH frames.])
4160 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4162 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4163 gcc_cv_ld_eh_gc_sections_bug=no
4164 if test $in_tree_ld = yes ; then
4165 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4166 && test $in_tree_ld_is_elf = yes; then
4167 gcc_cv_ld_eh_gc_sections_bug=yes
4169 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
4170 gcc_cv_ld_eh_gc_sections_bug=yes
4171 cat > conftest.s <<EOF
4174 .type _start, @function
4177 .size _start, .-_start
4178 .section .text.startup.foo,"ax",@progbits
4179 .type foo, @function
4183 .section .gcc_except_table.foo,"a",@progbits
4186 .section .eh_frame,"a",@progbits
4189 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4190 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4191 | grep "gc-sections option ignored" > /dev/null; then
4193 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4194 | grep gcc_except_table > /dev/null; then
4195 gcc_cv_ld_eh_gc_sections_bug=no
4198 rm -f conftest.s conftest.o conftest
4200 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4201 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4202 [Define if your linker has buggy garbage collection of
4203 sections support when .text.startup.foo like sections are used.])
4205 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4211 AC_CACHE_CHECK(linker --as-needed support,
4212 gcc_cv_ld_as_needed,
4213 [gcc_cv_ld_as_needed=no
4214 if test $in_tree_ld = yes ; then
4215 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4216 && test $in_tree_ld_is_elf = yes; then
4217 gcc_cv_ld_as_needed=yes
4219 elif test x$gcc_cv_ld != x; then
4220 # Check if linker supports --as-needed and --no-as-needed options
4221 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4222 gcc_cv_ld_as_needed=yes
4226 if test x"$gcc_cv_ld_as_needed" = xyes; then
4227 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4228 [Define if your linker supports --as-needed and --no-as-needed options.])
4231 case "$target:$tm_file" in
4232 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4233 AC_CACHE_CHECK(linker support for omitting dot symbols,
4234 gcc_cv_ld_no_dot_syms,
4235 [gcc_cv_ld_no_dot_syms=no
4236 if test $in_tree_ld = yes ; then
4237 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4238 gcc_cv_ld_no_dot_syms=yes
4240 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4241 cat > conftest1.s <<EOF
4245 cat > conftest2.s <<EOF
4246 .section ".opd","aw"
4251 .quad .LEfoo,.TOC.@tocbase,0
4257 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4258 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4259 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4260 gcc_cv_ld_no_dot_syms=yes
4262 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4265 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4266 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4267 [Define if your PowerPC64 linker only needs function descriptor syms.])
4270 AC_CACHE_CHECK(linker large toc support,
4271 gcc_cv_ld_large_toc,
4272 [gcc_cv_ld_large_toc=no
4273 if test $in_tree_ld = yes ; then
4274 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4275 gcc_cv_ld_large_toc=yes
4277 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4278 cat > conftest.s <<EOF
4279 .section ".tbss","awT",@nobits
4285 addis 9,13,ie0@got@tprel@ha
4286 ld 9,ie0@got@tprel@l(9)
4288 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4289 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4290 gcc_cv_ld_large_toc=yes
4292 rm -f conftest conftest.o conftest.s
4295 if test x"$gcc_cv_ld_large_toc" = xyes; then
4296 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4297 [Define if your PowerPC64 linker supports a large TOC.])
4302 AC_CACHE_CHECK(linker --build-id support,
4304 [gcc_cv_ld_buildid=no
4305 if test $in_tree_ld = yes ; then
4306 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4307 "$gcc_cv_gld_minor_version" -ge 18 -o \
4308 "$gcc_cv_gld_major_version" -gt 2 \
4309 && test $in_tree_ld_is_elf = yes; then
4310 gcc_cv_ld_buildid=yes
4312 elif test x$gcc_cv_ld != x; then
4313 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4314 gcc_cv_ld_buildid=yes
4317 if test x"$gcc_cv_ld_buildid" = xyes; then
4318 AC_DEFINE(HAVE_LD_BUILDID, 1,
4319 [Define if your linker supports --build-id.])
4322 AC_ARG_ENABLE(linker-build-id,
4323 [ --enable-linker-build-id
4324 compiler will always pass --build-id to linker],
4326 enable_linker_build_id=no)
4328 if test x"$enable_linker_build_id" = xyes; then
4329 if test x"$gcc_cv_ld_buildid" = xyes; then
4330 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4331 [Define if gcc should always pass --build-id to linker.])
4333 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4337 # In binutils 2.21, GNU ld gained support for new emulations fully
4338 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4339 AC_CACHE_CHECK(linker *_sol2 emulation support,
4340 gcc_cv_ld_sol2_emulation,
4341 [gcc_cv_ld_sol2_emulation=no
4342 if test $in_tree_ld = yes ; then
4343 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4344 "$gcc_cv_gld_minor_version" -ge 21 -o \
4345 "$gcc_cv_gld_major_version" -gt 2 \
4346 && test $in_tree_ld_is_elf = yes; then
4347 gcc_cv_ld_sol2_emulation=yes
4349 elif test x$gcc_cv_ld != x; then
4350 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4351 grep _sol2 > /dev/null; then
4352 gcc_cv_ld_sol2_emulation=yes
4355 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4356 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4357 [Define if your linker supports the *_sol2 emulations.])
4360 AC_CACHE_CHECK(linker --sysroot support,
4362 [gcc_cv_ld_sysroot=no
4363 if test $in_tree_ld = yes ; then
4364 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4365 gcc_cv_ld_sysroot=yes
4367 elif test x$gcc_cv_ld != x; then
4368 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4369 gcc_cv_ld_sysroot=yes
4372 if test x"$gcc_cv_ld_sysroot" = xyes; then
4373 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4374 [Define if your linker supports --sysroot.])
4377 if test x$with_sysroot = x && test x$host = x$target \
4378 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4379 && test "$prefix" != "NONE"; then
4380 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4381 [Define to PREFIX/include if cpp should also search that directory.])
4384 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4385 if test "x$with_headers" != x; then
4386 target_header_dir=$with_headers
4387 elif test "x$with_sysroot" = x; then
4388 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4389 elif test "x$with_build_sysroot" != "x"; then
4390 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4391 elif test "x$with_sysroot" = xyes; then
4392 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4394 target_header_dir="${with_sysroot}${native_system_header_dir}"
4397 target_header_dir=${native_system_header_dir}
4400 # Test for stack protector support in target C library.
4401 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4402 gcc_cv_libc_provides_ssp,
4403 [gcc_cv_libc_provides_ssp=no
4405 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4406 [# glibc 2.4 and later provides __stack_chk_fail and
4407 # either __stack_chk_guard, or TLS access to stack guard canary.
4408 if test -f $target_header_dir/features.h \
4409 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4410 $target_header_dir/features.h > /dev/null; then
4411 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4412 $target_header_dir/features.h > /dev/null; then
4413 gcc_cv_libc_provides_ssp=yes
4414 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4415 $target_header_dir/features.h > /dev/null \
4416 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4417 $target_header_dir/features.h > /dev/null; then
4418 gcc_cv_libc_provides_ssp=yes
4419 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4420 $target_header_dir/features.h > /dev/null && \
4421 test -f $target_header_dir/bits/uClibc_config.h && \
4422 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4423 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4424 gcc_cv_libc_provides_ssp=yes
4429 # Avoid complicated tests (see
4430 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4431 # simply assert that glibc does provide this, which is true for all
4432 # realistically usable GNU/Hurd configurations.
4433 gcc_cv_libc_provides_ssp=yes;;
4434 *-*-darwin* | *-*-freebsd*)
4435 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4436 [echo "no __stack_chk_fail on this target"])
4438 *) gcc_cv_libc_provides_ssp=no ;;
4441 if test x$gcc_cv_libc_provides_ssp = xyes; then
4442 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4443 [Define if your target C library provides stack protector support])
4446 # Test for <sys/sdt.h> on the target.
4447 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4448 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4450 if test -f $target_header_dir/sys/sdt.h; then
4451 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4452 [Define if your target C library provides sys/sdt.h])
4454 AC_MSG_RESULT($have_sys_sdt_h)
4456 # Check if TFmode long double should be used by default or not.
4457 # Some glibc targets used DFmode long double, but with glibc 2.4
4458 # and later they can use TFmode.
4460 powerpc*-*-linux* | \
4464 AC_ARG_WITH(long-double-128,
4465 [ --with-long-double-128 Use 128-bit long double by default.],
4466 gcc_cv_target_ldbl128="$with_long_double_128",
4467 [[gcc_cv_target_ldbl128=no
4468 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4469 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4470 && gcc_cv_target_ldbl128=yes
4474 if test x$gcc_cv_target_ldbl128 = xyes; then
4475 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4476 [Define if TFmode long double should be the default])
4479 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4480 gcc_cv_target_dl_iterate_phdr=unknown
4483 # <link.h> needs both a dl_iterate_phdr declaration and support for
4484 # compilation with largefile support.
4485 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4486 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4487 gcc_cv_target_dl_iterate_phdr=yes
4489 gcc_cv_target_dl_iterate_phdr=no
4493 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4494 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4495 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4496 [Define if your target C library provides the `dl_iterate_phdr' function.])
4498 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4500 # Find out what GC implementation we want, or may, use.
4502 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4510 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4513 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4518 echo "Using $GGC for garbage collection."
4520 # Libraries to use on the host. This will normally be set by the top
4521 # level Makefile. Here we simply capture the value for our Makefile.
4522 if test -z "${HOST_LIBS+set}"; then
4527 # Use the system's zlib library.
4529 zlibinc="-I\$(srcdir)/../zlib"
4530 AC_ARG_WITH(system-zlib,
4531 [ --with-system-zlib use installed libz],
4538 dnl Very limited version of automake's enable-maintainer-mode
4540 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4541 dnl maintainer-mode is disabled by default
4542 AC_ARG_ENABLE(maintainer-mode,
4543 [ --enable-maintainer-mode
4544 enable make rules and dependencies not useful
4545 (and sometimes confusing) to the casual installer],
4546 maintainer_mode=$enableval,
4549 AC_MSG_RESULT($maintainer_mode)
4551 if test "$maintainer_mode" = "yes"; then
4562 # Make empty files to contain the specs and options for each language.
4563 # Then add #include lines to for a compiler that has specs and/or options.
4569 # These (without "all_") are set in each config-lang.in.
4570 # `language' must be a single word so is spelled singularly.
4573 all_outputs='Makefile'
4574 # List of language makefile fragments.
4576 # Additional files for gengtype
4577 all_gtfiles="$target_gtfiles"
4579 # These are the languages that are set in --enable-languages,
4580 # and are available in the GCC tree.
4581 all_selected_languages=
4583 # Add the language fragments.
4584 # Languages are added via two mechanisms. Some information must be
4585 # recorded in makefile variables, these are defined in config-lang.in.
4586 # We accumulate them and plug them into the main Makefile.
4587 # The other mechanism is a set of hooks for each of the main targets
4588 # like `clean', `install', etc.
4590 language_hooks="Make-hooks"
4592 for lang in ${srcdir}/*/config-lang.in
4595 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4597 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4598 if test "x$lang_alias" = x
4600 echo "$lang doesn't set \$language." 1>&2
4603 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4604 subdirs="$subdirs $subdir"
4606 # $gcc_subdir is where the gcc integration files are to be found
4607 # for a language, both for internal compiler purposes (compiler
4608 # sources implementing front-end to GCC tree converters), and for
4609 # build infrastructure purposes (Make-lang.in, etc.)
4611 # This will be <subdir> (relative to $srcdir) if a line like
4612 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4613 # is found in <langdir>/config-lang.in, and will remain <langdir>
4616 # Except for the language alias (fetched above), the regular
4617 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4618 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4619 # only this and the language alias.
4621 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4622 if [ "$gcc_subdir" = "" ]; then
4623 gcc_subdir="$subdir"
4626 case ",$enable_languages," in
4628 all_selected_languages="$all_selected_languages $lang_alias"
4629 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4630 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4642 . ${srcdir}/$gcc_subdir/config-lang.in
4643 if test "x$language" = x
4645 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4650 case ",$enable_languages," in
4653 for i in $subdir_requires; do
4654 test -f "${srcdir}/$i/config-lang.in" && continue
4662 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4663 if test -f $srcdir/$gcc_subdir/lang.opt; then
4664 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4665 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4667 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4668 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4670 all_languages="$all_languages $language"
4671 all_compilers="$all_compilers $compilers"
4672 all_outputs="$all_outputs $outputs"
4673 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4674 case ",$enable_languages," in
4676 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4678 AC_SUBST(enable_lto)
4684 # Pick up gtfiles for c
4686 . ${srcdir}/c-config-lang.in
4687 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4690 for language in $all_selected_languages
4692 check_languages="$check_languages check-$language"
4695 # We link each language in with a set of hooks, reached indirectly via
4696 # lang.${target}. Only do so for selected languages.
4700 target_list="all.cross start.encap rest.encap tags \
4701 install-common install-man install-info install-pdf install-html dvi \
4702 pdf html uninstall info man srcextra srcman srcinfo \
4703 mostlyclean clean distclean maintainer-clean install-plugin"
4705 for t in $target_list
4708 for lang in $all_selected_languages
4712 echo "lang.$t: $x" >> Make-hooks
4716 # Option include files
4719 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4720 option_includes="option-includes.mk"
4721 AC_SUBST_FILE(option_includes)
4729 echo "dir ." > .gdbinit
4730 echo "dir ${srcdir}" >> .gdbinit
4731 if test x$gdb_needs_out_file_path = xyes
4733 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4735 if test "x$subdirs" != x; then
4738 echo "dir ${srcdir}/$s" >> .gdbinit
4741 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4743 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4744 AC_SUBST(gcc_tooldir)
4747 # Find a directory in which to install a shared libgcc.
4749 AC_ARG_ENABLE(version-specific-runtime-libs,
4750 [ --enable-version-specific-runtime-libs
4751 specify that runtime libraries should be
4752 installed in a compiler-specific directory])
4754 AC_ARG_WITH(slibdir,
4755 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4756 slibdir="$with_slibdir",
4757 if test "${enable_version_specific_runtime_libs+set}" = set; then
4758 slibdir='$(libsubdir)'
4759 elif test "$host" != "$target"; then
4760 slibdir='$(build_tooldir)/lib'
4766 # Set default prefix canonicalization.
4768 AC_ARG_ENABLE(canonical-prefixes,
4769 [ --enable-canonical-prefixes
4770 enable or disable prefix canonicalization],
4772 enable_canonical_prefixes=yes)
4773 if test x"$enable_canonical_prefixes" = xyes; then
4774 AC_DEFINE(ENABLE_CANONICAL_PREFIXES,
4775 1, [Define to enable prefix canonicalization.])
4778 # Substitute configuration variables
4781 AC_SUBST(all_compilers)
4782 AC_SUBST(all_gtfiles)
4783 AC_SUBST(all_lang_makefrags)
4784 AC_SUBST(all_languages)
4785 AC_SUBST(all_selected_languages)
4786 AC_SUBST(build_exeext)
4787 AC_SUBST(build_install_headers_dir)
4788 AC_SUBST(build_xm_file_list)
4789 AC_SUBST(build_xm_include_list)
4790 AC_SUBST(build_xm_defines)
4791 AC_SUBST(build_file_translate)
4792 AC_SUBST(check_languages)
4793 AC_SUBST(cpp_install_dir)
4794 AC_SUBST(xmake_file)
4795 AC_SUBST(tmake_file)
4796 AC_SUBST(TM_ENDIAN_CONFIG)
4797 AC_SUBST(TM_MULTILIB_CONFIG)
4798 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4799 AC_SUBST(extra_gcc_objs)
4800 AC_SUBST(user_headers_inc_next_pre)
4801 AC_SUBST(user_headers_inc_next_post)
4802 AC_SUBST(extra_headers_list)
4803 AC_SUBST(extra_objs)
4804 AC_SUBST(extra_parts)
4805 AC_SUBST(extra_passes)
4806 AC_SUBST(extra_programs)
4807 AC_SUBST(float_h_file)
4808 AC_SUBST(gcc_config_arguments)
4809 AC_SUBST(gcc_gxx_include_dir)
4810 AC_SUBST(host_exeext)
4811 AC_SUBST(host_xm_file_list)
4812 AC_SUBST(host_xm_include_list)
4813 AC_SUBST(host_xm_defines)
4814 AC_SUBST(out_host_hook_obj)
4816 AC_SUBST(lang_opt_files)
4817 AC_SUBST(lang_specs_files)
4818 AC_SUBST(lang_tree_files)
4819 AC_SUBST(local_prefix)
4821 AC_SUBST(objc_boehm_gc)
4823 AC_SUBST(out_object_file)
4824 AC_SUBST(thread_file)
4825 AC_SUBST(tm_file_list)
4826 AC_SUBST(tm_include_list)
4827 AC_SUBST(tm_defines)
4828 AC_SUBST(tm_p_file_list)
4829 AC_SUBST(tm_p_include_list)
4830 AC_SUBST(xm_file_list)
4831 AC_SUBST(xm_include_list)
4832 AC_SUBST(xm_defines)
4833 AC_SUBST(use_gcc_stdint)
4834 AC_SUBST(c_target_objs)
4835 AC_SUBST(cxx_target_objs)
4836 AC_SUBST(fortran_target_objs)
4837 AC_SUBST(target_cpu_default)
4839 AC_SUBST_FILE(language_hooks)
4842 if test x${build} = x${host} ; then
4843 if test x${host} = x${target} ; then
4844 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4846 echo "Links are now set up to build a cross-compiler" 1>&2
4847 echo " from ${host} to ${target}." 1>&2
4850 if test x${host} = x${target} ; then
4851 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4852 echo " for ${target}." 1>&2
4854 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4855 echo " from ${host} to ${target}." 1>&2
4859 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4860 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4862 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4863 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4865 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4866 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4867 if test "x${CLOOGLIBS}" != "x" ; then
4868 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4871 # Check for plugin support
4872 AC_ARG_ENABLE(plugin,
4873 [ --enable-plugin enable plugin support],
4874 enable_plugin=$enableval,
4875 enable_plugin=yes; default_plugin=yes)
4881 if test x$build = x$host; then
4882 export_sym_check="nm${exeext} -g"
4883 elif test x$host = x$target; then
4884 export_sym_check="$gcc_cv_nm -g"
4890 if test x$build = x$host; then
4891 export_sym_check="objdump${exeext} -T"
4892 elif test x$host = x$target; then
4893 export_sym_check="$gcc_cv_objdump -T"
4900 if test x"$enable_plugin" = x"yes"; then
4902 AC_MSG_CHECKING([for exported symbols])
4903 if test "x$export_sym_check" != x; then
4904 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4905 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4906 if $export_sym_check conftest | grep foobar > /dev/null; then
4907 : # No need to use a flag
4908 AC_MSG_RESULT([yes])
4910 AC_MSG_RESULT([yes])
4911 AC_MSG_CHECKING([for -rdynamic])
4912 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4913 if $export_sym_check conftest | grep foobar > /dev/null; then
4915 pluginlibs="-rdynamic"
4920 AC_MSG_RESULT([$plugin_rdynamic])
4923 AC_MSG_RESULT([unable to check])
4928 AC_SEARCH_LIBS([dlopen], [dl])
4929 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4930 pluginlibs="$pluginlibs -ldl"
4934 # Check that we can build shared objects with -fPIC -shared
4935 saved_LDFLAGS="$LDFLAGS"
4936 saved_CFLAGS="$CFLAGS"
4939 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4940 CFLAGS="$CFLAGS -fPIC"
4941 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4944 CFLAGS="$CFLAGS -fPIC"
4945 LDFLAGS="$LDFLAGS -fPIC -shared"
4948 AC_MSG_CHECKING([for -fPIC -shared])
4950 [extern int X;],[return X == 0;],
4951 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4952 [AC_MSG_RESULT([no]); have_pic_shared=no])
4953 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4957 LDFLAGS="$saved_LDFLAGS"
4958 CFLAGS="$saved_CFLAGS"
4960 # If plugin support had been requested but not available, fail.
4961 if test x"$enable_plugin" = x"no" ; then
4962 if test x"$default_plugin" != x"yes"; then
4964 Building GCC with plugin support requires a host that supports
4965 -fPIC, -shared, -ldl and -rdynamic.])
4970 AC_SUBST(pluginlibs)
4971 AC_SUBST(enable_plugin)
4972 if test x"$enable_plugin" = x"yes"; then
4973 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4977 AC_ARG_ENABLE(libquadmath-support,
4978 [AS_HELP_STRING([--disable-libquadmath-support],
4979 [disable libquadmath support for Fortran])],
4980 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
4981 ENABLE_LIBQUADMATH_SUPPORT=yes)
4982 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
4983 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
4984 [Define to 1 to enable libquadmath support])
4988 # Configure the subdirectories
4989 # AC_CONFIG_SUBDIRS($subdirs)
4991 # Create the Makefile
4992 # and configure language subdirectories
4993 AC_CONFIG_FILES($all_outputs)
4995 AC_CONFIG_COMMANDS([default],
4997 case ${CONFIG_HEADERS} in
4998 *auto-host.h:config.in*)
5001 # Make sure all the subdirs exist.
5002 for d in $subdirs doc build c-family
5004 test -d $d || mkdir $d
5007 [subdirs='$subdirs'])