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 AC_ARG_WITH(build-sysroot,
713 [ --with-build-sysroot=sysroot
714 use sysroot as the system root during the build])
717 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
719 case ${with_sysroot} in
720 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
721 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
724 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
725 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
727 if test "x$prefix" = xNONE; then
728 test_prefix=/usr/local
732 if test "x$exec_prefix" = xNONE; then
733 test_exec_prefix=$test_prefix
735 test_exec_prefix=$exec_prefix
737 case ${TARGET_SYSTEM_ROOT} in
738 "${test_prefix}"|"${test_prefix}/"*|\
739 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
740 '${prefix}'|'${prefix}/'*|\
741 '${exec_prefix}'|'${exec_prefix}/'*)
742 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
743 TARGET_SYSTEM_ROOT_DEFINE="$t"
748 TARGET_SYSTEM_ROOT_DEFINE=
749 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
751 AC_SUBST(TARGET_SYSTEM_ROOT)
752 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
753 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
756 [AS_HELP_STRING([--with-specs=SPECS],
757 [add SPECS to driver command-line processing])],
758 [CONFIGURE_SPECS=$withval],
761 AC_SUBST(CONFIGURE_SPECS)
763 ACX_PKGVERSION([GCC])
764 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
766 # Sanity check enable_languages in case someone does not run the toplevel
767 # configure # script.
768 AC_ARG_ENABLE(languages,
769 [ --enable-languages=LIST specify which front-ends to build],
770 [case ,${enable_languages}, in
772 # go safe -- we cannot be much sure without the toplevel
774 # analysis of which target libs are present and usable
778 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
783 enable_languages=c,${enable_languages}
786 [enable_languages=c])
788 AC_ARG_WITH(multilib-list,
789 [ --with-multilib-list Select multilibs (SH only)],
791 with_multilib_list=default)
793 # -------------------------
794 # Checks for other programs
795 # -------------------------
799 # Find some useful tools
801 # We need awk to create options.c and options.h.
802 # Bail out if it's missing.
804 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
812 # By default, the Darwin ranlib will not treat common symbols as
813 # definitions when building the archive table of contents. Other
814 # ranlibs do that; pass an option to the Darwin ranlib that makes
815 # it behave similarly.
821 AC_SUBST(ranlib_flags)
825 # See if cmp has --ignore-initial.
826 gcc_AC_PROG_CMP_IGNORE_INITIAL
828 # See if we have the mktemp command.
829 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
831 # See if makeinfo has been installed and is modern enough
832 # that we can use it.
833 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
834 [GNU texinfo.* \([0-9][0-9.]*\)],
835 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
836 if test $gcc_cv_prog_makeinfo_modern = no; then
838 *** Makeinfo is missing or too old.
839 *** Info documentation will not be built.])
846 # Is pod2man recent enough to regenerate manpages?
847 AC_MSG_CHECKING([for recent Pod::Man])
848 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
850 GENERATED_MANPAGES=generated-manpages
855 AC_SUBST(GENERATED_MANPAGES)
857 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
860 dnl Don't use AC_PROG_LEX; we insist on flex.
861 dnl LEXLIB is not useful in gcc.
862 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
865 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
867 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
868 # check for build == host before using them.
871 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
872 && test -d ../binutils ; then
873 NM='${objdir}/../binutils/nm-new'
875 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
879 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
880 && test -d ../binutils ; then
881 AR='${objdir}/../binutils/ar'
883 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
887 # --------------------
888 # Checks for C headers
889 # --------------------
891 # Need to reject headers which give warnings, so that the -Werror bootstrap
892 # works later. *sigh* This needs to come before all header checks.
899 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
900 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
901 sys/resource.h sys/param.h sys/times.h sys/stat.h \
902 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
904 # Check for thread headers.
905 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
906 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
908 # These tests can't be done till we know if we have limits.h.
912 # ----------------------
913 # Checks for C++ headers
914 # ----------------------
916 dnl Autoconf will give an error in the configure script if there is no
917 dnl C++ preprocessor. Hack to prevent that.
918 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
920 m4_popdef([AC_MSG_ERROR])[]dnl
924 AC_CHECK_HEADERS(unordered_map)
925 AC_CHECK_HEADERS(tr1/unordered_map)
926 AC_CHECK_HEADERS(ext/hash_map)
935 # These libraries may be used by collect2.
936 # We may need a special search path to get them linked.
937 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
939 for libs in '' -lld -lmld \
940 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
941 '-L/usr/lib/cmplrs/cc3.11 -lmld'
944 AC_TRY_LINK_FUNC(ldopen,
945 [gcc_cv_collect2_libs="$libs"; break])
948 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
949 case $gcc_cv_collect2_libs in
951 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
953 AC_SUBST(COLLECT2_LIBS)
955 # When building Ada code on Alpha, we need exc_resume which is usually in
956 # -lexc. So test for it.
959 AC_SEARCH_LIBS(exc_resume, exc)
962 AC_SUBST(GNAT_LIBEXC)
964 # Some systems put ldexp and frexp in libm instead of libc; assume
965 # they're both in the same place. jcf-dump needs them.
968 AC_SEARCH_LIBS(ldexp, m)
973 # Use <inttypes.h> only if it exists,
974 # doesn't clash with <sys/types.h>, and declares intmax_t.
975 AC_MSG_CHECKING(for inttypes.h)
976 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
977 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
978 [[#include <sys/types.h>
979 #include <inttypes.h>]],
980 [[intmax_t i = -1;]])],
981 [gcc_cv_header_inttypes_h=yes],
982 [gcc_cv_header_inttypes_h=no])])
983 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
984 if test $gcc_cv_header_inttypes_h = yes; then
985 AC_DEFINE(HAVE_INTTYPES_H, 1,
986 [Define if you have a working <inttypes.h> header file.])
989 dnl Disabled until we have a complete test for buggy enum bitfields.
990 dnl gcc_AC_C_ENUM_BF_UNSIGNED
992 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
993 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
994 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
995 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
996 putchar_unlocked putc_unlocked)
997 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
998 sysconf strsignal getrusage nl_langinfo \
999 gettimeofday mbstowcs wcswidth mmap setlocale \
1002 if test x$ac_cv_func_mbstowcs = xyes; then
1003 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1004 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1010 [gcc_cv_func_mbstowcs_works=yes],
1011 [gcc_cv_func_mbstowcs_works=no],
1012 [gcc_cv_func_mbstowcs_works=yes])])
1013 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1014 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1015 [Define this macro if mbstowcs does not crash when its
1016 first argument is NULL.])
1020 AC_CHECK_TYPE(ssize_t, int)
1021 AC_CHECK_TYPE(caddr_t, char *)
1023 gcc_AC_FUNC_MMAP_BLACKLIST
1027 # Under VMS, vfork works very differently than on Unix. The standard test
1028 # won't work, and it isn't easily adaptable. It makes more sense to
1030 ac_cv_func_vfork_works=yes
1036 # Until we have in-tree GNU iconv:
1038 AC_SUBST(LIBICONV_DEP)
1044 # We will need to find libiberty.h and ansidecl.h
1045 saved_CFLAGS="$CFLAGS"
1046 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1047 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1048 strsignal strstr strverscmp \
1049 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1050 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1051 #include "ansidecl.h"
1052 #include "system.h"])
1054 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1055 #include "ansidecl.h"
1057 #ifdef HAVE_SYS_RESOURCE_H
1058 #include <sys/resource.h>
1062 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1063 #include "ansidecl.h"
1065 #ifdef HAVE_SYS_RESOURCE_H
1066 #include <sys/resource.h>
1068 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1069 [Define to `long' if <sys/resource.h> doesn't define.])])
1071 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1072 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1073 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1074 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1075 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1076 #include "ansidecl.h"
1085 gcc_AC_CHECK_DECLS(times, , ,[
1086 #include "ansidecl.h"
1088 #ifdef HAVE_SYS_TIMES_H
1089 #include <sys/times.h>
1093 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1094 #include "ansidecl.h"
1099 # More time-related stuff.
1100 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1101 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1102 #include "ansidecl.h"
1104 #ifdef HAVE_SYS_TIMES_H
1105 #include <sys/times.h>
1107 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1108 if test $ac_cv_struct_tms = yes; then
1109 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1110 [Define if <sys/times.h> defines struct tms.])
1113 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1114 # revisit after autoconf 2.50.
1115 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1116 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1117 #include "ansidecl.h"
1119 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1120 if test $gcc_cv_type_clock_t = yes; then
1121 AC_DEFINE(HAVE_CLOCK_T, 1,
1122 [Define if <time.h> defines clock_t.])
1125 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1126 CFLAGS="$saved_CFLAGS"
1128 gcc_AC_INITFINI_ARRAY
1130 # mkdir takes a single argument on some systems.
1131 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1139 # With Setjmp/Longjmp based exception handling.
1140 AC_ARG_ENABLE(sjlj-exceptions,
1141 [ --enable-sjlj-exceptions
1142 arrange to use setjmp/longjmp exception handling],
1145 if test $enableval != yes; then
1146 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1151 force_sjlj_exceptions=yes],
1154 force_sjlj_exceptions=yes
1158 force_sjlj_exceptions=no
1161 if test $force_sjlj_exceptions = yes; then
1162 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1163 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1164 [Define 0/1 to force the choice for exception handling model.])
1167 # For platforms with the unwind ABI which includes an unwind library,
1168 # libunwind, we can choose to use the system libunwind.
1169 # config.gcc also contains tests of with_system_libunwind.
1170 GCC_CHECK_UNWIND_GETIPINFO
1172 # --------------------------------------------------------
1173 # Build, host, and target specific configuration fragments
1174 # --------------------------------------------------------
1176 # Collect build-machine-specific information.
1177 . ${srcdir}/config.build
1179 # Collect host-machine-specific information.
1180 . ${srcdir}/config.host
1184 # Collect target-machine-specific information.
1185 . ${srcdir}/config.gcc
1187 extra_objs="${host_extra_objs} ${extra_objs}"
1188 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1190 # Default the target-machine variables that were not explicitly set.
1191 if test x"$tm_file" = x
1192 then tm_file=$cpu_type/$cpu_type.h; fi
1194 if test x"$extra_headers" = x
1195 then extra_headers=; fi
1197 if test x$md_file = x
1198 then md_file=$cpu_type/$cpu_type.md; fi
1200 if test x$out_file = x
1201 then out_file=$cpu_type/$cpu_type.c; fi
1203 if test x"$tmake_file" = x
1204 then tmake_file=$cpu_type/t-$cpu_type
1207 if test x"$dwarf2" = xyes
1208 then tm_file="$tm_file tm-dwarf2.h"
1211 # Say what files are being used for the output code and MD file.
1212 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1213 echo "Using \`$srcdir/config/$md_file' as machine description file."
1215 # If any of the xm_file variables contain nonexistent files, warn
1216 # about them and drop them.
1219 for x in $build_xm_file; do
1220 if test -f $srcdir/config/$x
1222 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1228 for x in $host_xm_file; do
1229 if test -f $srcdir/config/$x
1231 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1237 for x in $xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for f in $tm_file; do
1249 if test $count = ax; then
1250 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1252 echo "Using the following target machine macro files:"
1253 for f in $tm_file; do
1254 echo " $srcdir/config/$f"
1258 if test x$need_64bit_hwint = xyes; then
1259 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1260 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1263 if test x$use_long_long_for_widest_fast_int = xyes; then
1264 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1265 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1266 efficiently supported by the host hardware.])
1270 for f in $host_xm_file; do
1273 if test $count = a; then
1275 elif test $count = ax; then
1276 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1278 echo "Using the following host machine macro files:"
1279 for f in $host_xm_file; do
1280 echo " $srcdir/config/$f"
1283 echo "Using ${out_host_hook_obj} for host machine hooks."
1285 if test "$host_xm_file" != "$build_xm_file"; then
1287 for f in $build_xm_file; do
1290 if test $count = a; then
1292 elif test $count = ax; then
1293 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1295 echo "Using the following build machine macro files:"
1296 for f in $build_xm_file; do
1297 echo " $srcdir/config/$f"
1304 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1305 gcc_cv_mcontext_underscores,
1307 #include <sys/cdefs.h>
1308 #include <sys/signal.h>
1309 #include <ucontext.h>
1310 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1312 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1313 if test $gcc_cv_mcontext_underscores = yes; then
1314 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1315 [mcontext_t fields start with __])
1324 # Check if a valid thread package
1325 case ${enable_threads} in
1328 target_thread_file='single'
1332 target_thread_file='single'
1334 aix | dce | gnat | irix | posix | posix95 | rtems | \
1335 single | vxworks | win32 | mipssde)
1336 target_thread_file=${enable_threads}
1339 echo "${enable_threads} is an unknown thread package" 1>&2
1344 if test x${thread_file} = x; then
1345 # No thread file set by target-specific clauses in config.gcc,
1346 # so use file chosen by default logic above
1347 thread_file=${target_thread_file}
1350 # Make gthr-default.h if we have a thread file.
1352 if test $thread_file != single; then
1353 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1354 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1355 rm -f gthr-default.h-t
1357 mv -f gthr-default.h-t gthr-default.h
1359 gthread_flags=-DHAVE_GTHR_DEFAULT
1361 AC_SUBST(gthread_flags)
1368 if test x$enable___cxa_atexit = xyes || \
1369 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1370 if test x$host = x$target; then
1372 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1373 # keyed to flag_use_cxa_atexit
1378 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1379 [echo "__cxa_atexit can't be enabled on this target"])
1383 # We can't check for __cxa_atexit when building a cross, so assume
1387 if test x$use_cxa_atexit = xyes; then
1388 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1389 [Define if you want to use __cxa_atexit, rather than atexit, to
1390 register C++ destructors for local statics and global objects.
1391 This is essential for fully standards-compliant handling of
1392 destructors, but requires __cxa_atexit in libc.])
1396 # Look for a file containing extra machine modes.
1397 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1398 extra_modes_file='$(srcdir)'/config/${extra_modes}
1399 AC_SUBST(extra_modes_file)
1400 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1401 [Define to the name of a file containing a list of extra machine modes
1402 for this architecture.])
1405 # Convert extra_options into a form suitable for Makefile use.
1408 for f in $extra_options; do
1409 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1410 all_opt_files="$all_opt_files $srcdir/config/$f"
1412 AC_SUBST(extra_opt_files)
1414 # auto-host.h is the file containing items generated by autoconf and is
1415 # the first file included by config.h.
1416 # If host=build, it is correct to have bconfig include auto-host.h
1417 # as well. If host!=build, we are in error and need to do more
1418 # work to find out the build config parameters.
1419 if test x$host = x$build
1421 build_auto=auto-host.h
1423 # We create a subdir, then run autoconf in the subdir.
1424 # To prevent recursion we set host and build for the new
1425 # invocation of configure to the build for this invocation
1432 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1433 *) realsrcdir=../${srcdir};;
1435 saved_CFLAGS="${CFLAGS}"
1436 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1437 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1438 ${realsrcdir}/configure \
1439 --enable-languages=${enable_languages-all} \
1440 --target=$target_alias --host=$build_alias --build=$build_alias
1441 CFLAGS="${saved_CFLAGS}"
1443 # We just finished tests for the build machine, so rename
1444 # the file auto-build.h in the gcc directory.
1445 mv auto-host.h ../auto-build.h
1448 build_auto=auto-build.h
1450 AC_SUBST(build_subdir)
1452 tm_file="${tm_file} defaults.h"
1453 tm_p_file="${tm_p_file} tm-preds.h"
1454 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1455 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1456 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1457 # put this back in temporarily.
1458 xm_file="auto-host.h ansidecl.h ${xm_file}"
1465 # Compile in configure arguments.
1466 if test -f configargs.h ; then
1467 # Being re-configured.
1468 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1469 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1471 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1474 # Double all backslashes and backslash all quotes to turn
1475 # gcc_config_arguments into a C string.
1476 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1477 $gcc_config_arguments
1479 gcc_config_arguments_str=`cat conftest.out`
1482 cat > configargs.h <<EOF
1483 /* Generated automatically. */
1484 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1485 static const char thread_model[] = "$thread_file";
1487 static const struct {
1488 const char *name, *value;
1489 } configure_default_options[] = $configure_default_options;
1494 gcc_BASEVER=`cat $srcdir/BASE-VER`
1495 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1496 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1497 if test -f $srcdir/REVISION ; then
1498 gcc_REVISION=`cat $srcdir/REVISION`
1502 cat > plugin-version.h <<EOF
1503 #include "configargs.h"
1505 static char basever[] = "$gcc_BASEVER";
1506 static char datestamp[] = "$gcc_DATESTAMP";
1507 static char devphase[] = "$gcc_DEVPHASE";
1508 static char revision[] = "$gcc_REVISION";
1510 /* FIXME plugins: We should make the version information more precise.
1511 One way to do is to add a checksum. */
1513 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1515 configuration_arguments};
1519 # Internationalization
1520 ZW_GNU_GETTEXT_SISTER_DIR
1522 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1523 # -liconv on the link line twice.
1524 case "$LIBINTL" in *$LIBICONV*)
1528 AC_ARG_ENABLE(secureplt,
1529 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1532 AC_ARG_ENABLE(leading-mingw64-underscores,
1533 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1534 [Enable leading underscores on 64 bit mingw targets]),
1536 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1537 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1538 [Define if we should use leading underscore on 64 bit mingw targets])])
1541 [ --enable-cld enable -mcld by default for 32bit x86], [],
1544 AC_ARG_ENABLE(frame-pointer,
1545 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1548 linux* | darwin[[8912]]*)
1549 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1551 enable_frame_pointer=no
1554 enable_frame_pointer=yes
1559 # Windows32 Registry support for specifying GCC installation paths.
1560 AC_ARG_ENABLE(win32-registry,
1561 [ --disable-win32-registry
1562 disable lookup of installation paths in the
1563 Registry on Windows hosts
1564 --enable-win32-registry enable registry lookup (default)
1565 --enable-win32-registry=KEY
1566 use KEY instead of GCC version as the last portion
1567 of the registry key],,)
1570 win32 | pe | cygwin* | mingw32* | uwin*)
1571 if test "x$enable_win32_registry" != xno; then
1572 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1575 if test "x$enable_win32_registry" != xno; then
1576 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1577 [Define to 1 if installation paths should be looked up in the Windows
1578 Registry. Ignored on non-Windows hosts.])
1580 if test "x$enable_win32_registry" != xyes \
1581 && test "x$enable_win32_registry" != x; then
1582 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1583 [Define to be the last component of the Windows registry key under which
1584 to look for installation paths. The full key used will be
1585 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1586 The default is the GCC version number.])
1592 # Get an absolute path to the GCC top-level source directory
1593 holddir=`${PWDCMD-pwd}`
1595 topdir=`${PWDCMD-pwd}`
1598 # Conditionalize the makefile for this host machine.
1600 for f in ${host_xmake_file}
1602 if test -f ${srcdir}/config/$f
1604 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1608 # Conditionalize the makefile for this target machine.
1610 for f in ${tmake_file}
1612 if test -f ${srcdir}/config/$f
1614 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1617 tmake_file="${tmake_file_}"
1619 out_object_file=`basename $out_file .c`.o
1621 tm_file_list="options.h"
1622 tm_include_list="options.h insn-constants.h"
1623 for f in $tm_file; do
1626 f=`echo $f | sed 's/^..//'`
1627 tm_file_list="${tm_file_list} $f"
1628 tm_include_list="${tm_include_list} $f"
1631 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1632 tm_include_list="${tm_include_list} $f"
1635 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1636 tm_include_list="${tm_include_list} config/$f"
1641 libgcc_tm_file_list=
1642 libgcc_tm_include_list=
1643 for f in $libgcc_tm_file; do
1644 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1645 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1650 for f in $tm_p_file; do
1653 tm_p_file_list="${tm_p_file_list} $f"
1654 tm_p_include_list="${tm_p_include_list} $f"
1657 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1658 tm_p_include_list="${tm_p_include_list} config/$f"
1664 for f in $xm_file; do
1667 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1668 xm_include_list="${xm_include_list} $f"
1671 xm_file_list="${xm_file_list} $f"
1672 xm_include_list="${xm_include_list} $f"
1675 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1676 xm_include_list="${xm_include_list} config/$f"
1682 host_xm_include_list=
1683 for f in $host_xm_file; do
1686 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1687 host_xm_include_list="${host_xm_include_list} $f"
1690 host_xm_file_list="${host_xm_file_list} $f"
1691 host_xm_include_list="${host_xm_include_list} $f"
1694 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1695 host_xm_include_list="${host_xm_include_list} config/$f"
1701 for f in $build_xm_file; do
1704 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1705 build_xm_include_list="${build_xm_include_list} $f"
1707 auto-build.h | auto-host.h )
1708 build_xm_file_list="${build_xm_file_list} $f"
1709 build_xm_include_list="${build_xm_include_list} $f"
1712 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1713 build_xm_include_list="${build_xm_include_list} config/$f"
1718 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1719 # cross-compiler which does not use the native headers and libraries.
1720 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1721 CROSS= AC_SUBST(CROSS)
1722 ALL=all.internal AC_SUBST(ALL)
1723 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1725 if test "x$with_build_sysroot" != x; then
1726 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1728 # This value is used, even on a native system, because
1729 # CROSS_SYSTEM_HEADER_DIR is just
1730 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1731 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1734 if test x$host != x$target
1736 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1738 SYSTEM_HEADER_DIR=$build_system_header_dir
1739 case "$host","$target" in
1740 # Darwin crosses can use the host system's libraries and headers,
1741 # because of the fat library support. Of course, it must be the
1742 # same version of Darwin on both sides. Allow the user to
1743 # just say --target=foo-darwin without a version number to mean
1744 # "the version on this system".
1745 *-*-darwin*,*-*-darwin*)
1746 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1747 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1748 if test $hostos = $targetos -o $targetos = darwin ; then
1750 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1755 i?86-*-*,x86_64-*-* \
1756 | powerpc*-*-*,powerpc64*-*-*)
1757 CROSS="$CROSS -DNATIVE_CROSS" ;;
1762 if test "x$with_headers" = x; then
1769 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1770 SYSTEM_HEADER_DIR=$build_system_header_dir
1773 # If this is a cross-compiler that does not
1774 # have its own set of headers then define
1777 # If this is using newlib, without having the headers available now,
1778 # then define inhibit_libc in LIBGCC2_CFLAGS.
1779 # This prevents libgcc2 from containing any code which requires libc
1781 : ${inhibit_libc=false}
1782 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1783 test x$with_newlib = xyes ; } &&
1784 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1787 AC_SUBST(inhibit_libc)
1789 # When building gcc with a cross-compiler, we need to adjust things so
1790 # that the generator programs are still built with the native compiler.
1791 # Also, we cannot run fixincludes.
1793 # These are the normal (build=host) settings:
1794 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1795 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1796 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1797 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1799 # And these apply if build != host, or we are generating coverage data
1800 if test x$build != x$host || test "x$coverage_flags" != x
1802 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1803 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1806 # Expand extra_headers to include complete path.
1807 # This substitutes for lots of t-* files.
1809 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1810 for file in ${extra_headers} ; do
1811 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1814 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1815 if test x"$use_gcc_tgmath" = xyes
1816 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1819 # Define collect2 in Makefile.
1820 case $host_can_use_collect2 in
1822 *) collect2='collect2$(exeext)' ;;
1824 AC_SUBST([collect2])
1826 # Add a definition of USE_COLLECT2 if system wants one.
1827 case $use_collect2 in
1828 no) use_collect2= ;;
1831 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1832 xm_defines="${xm_defines} USE_COLLECT2"
1833 case $host_can_use_collect2 in
1835 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1841 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1842 [Define to the name of the LTO plugin DSO that must be
1843 passed to the linker's -plugin=LIB option.])
1845 # ---------------------------
1846 # Assembler & linker features
1847 # ---------------------------
1849 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1850 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1851 # However when ld-new is first executed from the build tree, libtool will
1852 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1853 # to the build tree. While doing this we need to use the previous-stage
1854 # linker, or we have an infinite loop. The presence of a shell script as
1855 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1856 # the gcc/collect-ld script. So we need to know how libtool works, or
1857 # exec-tool will fail.
1859 m4_defun([_LT_CONFIG_COMMANDS], [])
1862 AC_SUBST(enable_fast_install)
1864 # Identify the assembler which will work hand-in-glove with the newly
1865 # built GCC, so that we can examine its features. This is the assembler
1866 # which will be driven by the driver program.
1868 # If build != host, and we aren't building gas in-tree, we identify a
1869 # build->target assembler and hope that it will have the same features
1870 # as the host->target assembler we'll be using.
1871 gcc_cv_gas_major_version=
1872 gcc_cv_gas_minor_version=
1873 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1875 m4_pattern_allow([AS_FOR_TARGET])dnl
1876 AS_VAR_SET_IF(gcc_cv_as,, [
1877 if test -x "$DEFAULT_ASSEMBLER"; then
1878 gcc_cv_as="$DEFAULT_ASSEMBLER"
1879 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1880 && test -f ../gas/Makefile \
1881 && test x$build = x$host; then
1882 gcc_cv_as=../gas/as-new$build_exeext
1883 elif test -x as$build_exeext; then
1884 # Build using assembler in the current directory.
1885 gcc_cv_as=./as$build_exeext
1886 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1887 gcc_cv_as="$AS_FOR_TARGET"
1889 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1892 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1893 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1894 case "$ORIGINAL_AS_FOR_TARGET" in
1895 ./as | ./as$build_exeext) ;;
1896 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1899 AC_MSG_CHECKING(what assembler to use)
1900 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1901 # Single tree build which includes gas. We want to prefer it
1902 # over whatever linker top-level may have detected, since
1903 # we'll use what we're building after installation anyway.
1904 AC_MSG_RESULT(newly built gas)
1906 _gcc_COMPUTE_GAS_VERSION
1907 in_tree_gas_is_elf=no
1908 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1909 || (grep 'obj_format = multi' ../gas/Makefile \
1910 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1912 in_tree_gas_is_elf=yes
1915 AC_MSG_RESULT($gcc_cv_as)
1919 # Identify the linker which will work hand-in-glove with the newly
1920 # built GCC, so that we can examine its features. This is the linker
1921 # which will be driven by the driver program.
1923 # If build != host, and we aren't building gas in-tree, we identify a
1924 # build->target linker and hope that it will have the same features
1925 # as the host->target linker we'll be using.
1926 gcc_cv_gld_major_version=
1927 gcc_cv_gld_minor_version=
1928 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1929 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1931 AS_VAR_SET_IF(gcc_cv_ld,, [
1932 if test -x "$DEFAULT_LINKER"; then
1933 gcc_cv_ld="$DEFAULT_LINKER"
1934 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1935 && test -f ../ld/Makefile \
1936 && test x$build = x$host; then
1937 gcc_cv_ld=../ld/ld-new$build_exeext
1938 elif test -x collect-ld$build_exeext; then
1939 # Build using linker in the current directory.
1940 gcc_cv_ld=./collect-ld$build_exeext
1941 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1942 gcc_cv_ld="$LD_FOR_TARGET"
1944 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1947 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1948 PLUGIN_LD=`basename $gcc_cv_ld`
1949 AC_ARG_WITH(plugin-ld,
1950 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1951 [if test x"$withval" != x; then
1952 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1953 PLUGIN_LD="$withval"
1955 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1956 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1958 # Check to see if we are using gold instead of ld
1959 AC_MSG_CHECKING(whether we are using gold)
1961 if test x$gcc_cv_ld != x; then
1962 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1963 | grep "GNU gold" > /dev/null; then
1967 AC_MSG_RESULT($ld_is_gold)
1969 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1970 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1971 case "$ORIGINAL_LD_FOR_TARGET" in
1972 ./collect-ld | ./collect-ld$build_exeext) ;;
1973 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1976 AC_MSG_CHECKING(what linker to use)
1977 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
1978 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
1979 # Single tree build which includes ld. We want to prefer it
1980 # over whatever linker top-level may have detected, since
1981 # we'll use what we're building after installation anyway.
1982 AC_MSG_RESULT(newly built ld)
1984 in_tree_ld_is_elf=no
1985 if (grep 'EMUL = .*elf' ../ld/Makefile \
1986 || grep 'EMUL = .*linux' ../ld/Makefile \
1987 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1988 in_tree_ld_is_elf=yes
1989 elif test "$ld_is_gold" = yes; then
1990 in_tree_ld_is_elf=yes
1992 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
1995 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1996 if test x$gcc_cv_gld_version != x; then
2000 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2001 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2004 AC_MSG_RESULT($gcc_cv_ld)
2008 # Figure out what nm we will be using.
2009 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2010 AS_VAR_SET_IF(gcc_cv_nm,, [
2011 if test -f $gcc_cv_binutils_srcdir/configure.in \
2012 && test -f ../binutils/Makefile \
2013 && test x$build = x$host; then
2014 gcc_cv_nm=../binutils/nm-new$build_exeext
2015 elif test -x nm$build_exeext; then
2016 gcc_cv_nm=./nm$build_exeext
2017 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2018 gcc_cv_nm="$NM_FOR_TARGET"
2020 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2023 AC_MSG_CHECKING(what nm to use)
2024 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2025 # Single tree build which includes binutils.
2026 AC_MSG_RESULT(newly built nm)
2029 AC_MSG_RESULT($gcc_cv_nm)
2033 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2034 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2035 case "$ORIGINAL_NM_FOR_TARGET" in
2036 ./nm | ./nm$build_exeext) ;;
2037 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2041 # Figure out what objdump we will be using.
2042 AS_VAR_SET_IF(gcc_cv_objdump,, [
2043 if test -f $gcc_cv_binutils_srcdir/configure.in \
2044 && test -f ../binutils/Makefile \
2045 && test x$build = x$host; then
2046 # Single tree build which includes binutils.
2047 gcc_cv_objdump=../binutils/objdump$build_exeext
2048 elif test -x objdump$build_exeext; then
2049 gcc_cv_objdump=./objdump$build_exeext
2050 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2051 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2053 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2056 AC_MSG_CHECKING(what objdump to use)
2057 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2058 # Single tree build which includes binutils.
2059 AC_MSG_RESULT(newly built objdump)
2060 elif test x$gcc_cv_objdump = x; then
2061 AC_MSG_RESULT(not found)
2063 AC_MSG_RESULT($gcc_cv_objdump)
2066 # Figure out what readelf we will be using.
2067 AS_VAR_SET_IF(gcc_cv_readelf,, [
2068 if test -f $gcc_cv_binutils_srcdir/configure.in \
2069 && test -f ../binutils/Makefile \
2070 && test x$build = x$host; then
2071 # Single tree build which includes binutils.
2072 gcc_cv_readelf=../binutils/readelf$build_exeext
2073 elif test -x readelf$build_exeext; then
2074 gcc_cv_readelf=./readelf$build_exeext
2076 AC_PATH_PROG(gcc_cv_readelf, readelf)
2079 AC_MSG_CHECKING(what readelf to use)
2080 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2081 # Single tree build which includes binutils.
2082 AC_MSG_RESULT(newly built readelf)
2083 elif test x$gcc_cv_readelf = x; then
2084 AC_MSG_RESULT(not found)
2086 AC_MSG_RESULT($gcc_cv_readelf)
2089 # Figure out what assembler alignment features are present.
2090 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2094 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2095 [Define if your assembler supports .balign and .p2align.])])
2097 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2100 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2101 [Define if your assembler supports specifying the maximum number
2102 of bytes to skip when using the GAS .p2align command.])])
2104 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2107 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2108 [Define if your assembler supports .literal16.])])
2110 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2112 [conftest_label1: .word 0
2114 conftest_label2: .word 0
2116 [if test x$gcc_cv_nm != x; then
2117 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2118 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2119 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2121 else gcc_cv_as_subsection_m1=yes
2123 rm -f conftest.nm1 conftest.nm2
2125 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2126 [Define if your assembler supports .subsection and .subsection -1 starts
2127 emitting at the beginning of your section.])])
2129 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2132 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2134 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2136 [ .weakref foobar, barfnot],,
2137 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2139 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2142 .NSUBSPA $CODE$,COMDAT],,
2143 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2145 # .hidden needs to be supported in both the assembler and the linker,
2146 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2147 # This is irritatingly difficult to feature test for; we have to check the
2148 # date string after the version number. If we've got an in-tree
2149 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2151 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2152 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2156 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2157 # STV_HIDDEN, so disable .hidden support if so.
2160 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2161 cat > conftest.s <<EOF
2168 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2169 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2170 grep '\.hidden default' > /dev/null; then
2173 gcc_cv_as_hidden=yes
2176 # Assume bug is present if objdump is missing.
2181 gcc_cv_as_hidden=yes
2185 # gnu_indirect_function type is an extension proposed at
2186 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2187 # selection of function implementation
2188 AC_ARG_ENABLE(gnu-indirect-function,
2189 [AS_HELP_STRING([--enable-gnu-indirect-function],
2190 [enable the use of the @gnu_indirect_function to glibc systems])],
2191 [case $enable_gnu_indirect_function in
2193 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2194 Valid choices are 'yes' and 'no'.]) ;;
2196 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2197 if test x$enable_gnu_indirect_function = xyes; then
2198 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2199 [Define if your system supports gnu indirect functions.])
2203 if test $in_tree_ld != yes ; then
2204 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2205 if echo "$ld_ver" | grep GNU > /dev/null; then
2206 if test x"$ld_is_gold" = xyes; then
2207 # GNU gold --version looks like this:
2209 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2211 # We extract the binutils version which is more familiar and specific
2212 # than the gold version.
2213 ld_vers=`echo $ld_ver | sed -n \
2214 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2216 # GNU ld --version looks like this:
2218 # GNU ld (GNU Binutils) 2.21.51.20110225
2219 ld_vers=`echo $ld_ver | sed -n \
2220 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2222 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2223 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2224 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2225 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2230 # Solaris 2 ld -V output looks like this for a regular version:
2232 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2234 # but test versions add stuff at the end:
2236 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2238 ld_ver=`$gcc_cv_ld -V 2>&1`
2239 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2240 ld_vers=`echo $ld_ver | sed -n \
2241 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2242 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2243 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2251 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2252 [[if test $in_tree_ld = yes ; then
2254 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2255 && test $in_tree_ld_is_elf = yes; then
2256 gcc_cv_ld_hidden=yes
2259 gcc_cv_ld_hidden=yes
2260 if test x"$ld_is_gold" = xyes; then
2262 elif echo "$ld_ver" | grep GNU > /dev/null; then
2263 if test 0"$ld_date" -lt 20020404; then
2264 if test -n "$ld_date"; then
2265 # If there was date string, but was earlier than 2002-04-04, fail
2267 elif test -z "$ld_vers"; then
2268 # If there was no date string nor ld version number, something is wrong
2271 test -z "$ld_vers_patch" && ld_vers_patch=0
2272 if test "$ld_vers_major" -lt 2; then
2274 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2275 gcc_cv_ld_hidden="no"
2276 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2283 hppa64*-*-hpux* | ia64*-*-hpux*)
2284 gcc_cv_ld_hidden=yes
2287 # .hidden support was backported to Solaris 8, starting with ld
2289 if test "$ld_vers_minor" -ge 276; then
2290 gcc_cv_ld_hidden=yes
2295 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2296 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2297 # .symbolic was only added in Solaris 9 12/02.
2298 gcc_cv_ld_hidden=yes
2306 libgcc_visibility=no
2307 AC_SUBST(libgcc_visibility)
2308 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2309 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2310 libgcc_visibility=yes
2311 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2312 [Define if your assembler and linker support .hidden.])
2315 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2316 gcc_cv_ld_ro_rw_mix=unknown
2317 if test $in_tree_ld = yes ; then
2318 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2319 && test $in_tree_ld_is_elf = yes; then
2320 gcc_cv_ld_ro_rw_mix=read-write
2322 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2323 echo '.section myfoosect, "a"' > conftest1.s
2324 echo '.section myfoosect, "aw"' > conftest2.s
2325 echo '.byte 1' >> conftest2.s
2326 echo '.section myfoosect, "a"' > conftest3.s
2327 echo '.byte 0' >> conftest3.s
2328 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2329 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2330 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2331 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2332 conftest2.o conftest3.o > /dev/null 2>&1; then
2333 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2334 | sed -e '/myfoosect/!d' -e N`
2335 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2336 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2337 gcc_cv_ld_ro_rw_mix=read-only
2339 gcc_cv_ld_ro_rw_mix=read-write
2344 rm -f conftest.* conftest[123].*
2347 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2348 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2349 [Define if your linker links a mix of read-only
2350 and read-write sections into a read-write section.])
2352 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2354 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2355 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2363 [[# GAS versions before 2.11 do not support uleb128,
2364 # despite appearing to.
2365 # ??? There exists an elf-specific test that will crash
2366 # the assembler. Perhaps it's better to figure out whether
2367 # arbitrary sections are supported and try the test.
2368 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2369 if echo "$as_ver" | grep GNU > /dev/null; then
2370 as_vers=`echo $as_ver | sed -n \
2371 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2372 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2373 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2374 if test $as_major -eq 2 && test $as_minor -lt 11
2376 else gcc_cv_as_leb128=yes
2379 [AC_DEFINE(HAVE_AS_LEB128, 1,
2380 [Define if your assembler supports .sleb128 and .uleb128.])])
2382 # Check if we have assembler support for unwind directives.
2383 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2390 .cfi_escape 1, 2, 3, 4, 5
2394 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2395 # read-only and read-write sections, we need to make sure that the
2396 # assembler used emits read-write .eh_frame sections.
2397 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2398 if test "x$gcc_cv_objdump" != x; then
2399 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2400 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2401 gcc_cv_as_cfi_directive=no
2404 i?86-*-solaris2.1[[0-9]]*)
2405 # On Solaris/x86, make sure that GCC and gas agree on using
2406 # read-only .eh_frame sections for 64-bit.
2407 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2408 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2409 sed -e /.eh_frame/!d -e N | \
2410 grep READONLY > /dev/null; then
2411 gcc_cv_as_cfi_directive=yes
2413 gcc_cv_as_cfi_directive=no
2417 gcc_cv_as_cfi_directive=yes
2422 # no objdump, err on the side of caution
2423 gcc_cv_as_cfi_directive=no
2426 gcc_cv_as_cfi_directive=yes
2430 gcc_cv_as_cfi_directive=yes
2433 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2434 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2438 .cfi_adjust_cfa_offset 64
2440 .cfi_adjust_cfa_offset 128
2443 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2444 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2445 gcc_cv_as_cfi_advance_working=yes
2449 # no objdump, err on the side of caution
2450 gcc_cv_as_cfi_advance_working=no
2452 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2453 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2454 [`if test $gcc_cv_as_cfi_directive = yes \
2455 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2456 [Define 0/1 if your assembler supports CFI directives.])
2458 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2459 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2460 gcc_cv_as_cfi_personality_directive, ,,
2463 .cfi_personality 0, symbol
2465 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2466 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2467 then echo 1; else echo 0; fi`],
2468 [Define 0/1 if your assembler supports .cfi_personality.])
2470 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2471 gcc_cv_as_cfi_sections_directive, ,,
2473 .cfi_sections .debug_frame, .eh_frame
2477 win32 | pe | cygwin* | mingw32* | uwin*)
2478 # Need to check that we generated the correct relocation for the
2479 # .debug_frame section. This was fixed for binutils 2.21.
2480 gcc_cv_as_cfi_sections_directive=no
2481 if test "x$gcc_cv_objdump" != x; then
2482 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2483 grep secrel > /dev/null; then
2484 gcc_cv_as_cfi_sections_directive=yes
2489 gcc_cv_as_cfi_sections_directive=yes
2492 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2493 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2494 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2495 then echo 1; else echo 0; fi`],
2496 [Define 0/1 if your assembler supports .cfi_sections.])
2498 # GAS versions up to and including 2.11.0 may mis-optimize
2500 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2508 .section .eh_frame,"aw",@progbits
2510 .4byte .LECIE1-.LSCIE1
2524 .4byte .LEFDE1-.LASFDE1
2526 .4byte .LASFDE1-__FRAME_BEGIN__
2534 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2535 cat > conftest.lit <<EOF
2536 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2537 0010 01000000 12000000 18000000 00000000 ................
2538 0020 08000000 04080000 0044 .........D @&t@
2540 cat > conftest.big <<EOF
2541 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2542 0010 00000001 00000012 00000018 00000000 ................
2543 0020 00000008 04000000 0844 .........D @&t@
2545 # If the assembler didn't choke, and we can objdump,
2546 # and we got the correct data, then succeed.
2547 # The text in the here-document typically retains its unix-style line
2548 # endings, while the output of objdump will use host line endings.
2549 # Therefore, use diff -b for the comparisons.
2550 if test x$gcc_cv_objdump != x \
2551 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2552 | tail -3 > conftest.got \
2553 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2554 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2556 gcc_cv_as_eh_frame=yes
2557 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2558 gcc_cv_as_eh_frame=buggy
2560 # Uh oh, what do we do now?
2561 gcc_cv_as_eh_frame=no
2564 if test $gcc_cv_as_eh_frame = buggy; then
2565 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2566 [Define if your assembler mis-optimizes .eh_frame data.])
2569 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2570 [elf,2,12,0], [--fatal-warnings],
2571 [.section .rodata.str, "aMS", @progbits, 1])
2572 if test $gcc_cv_as_shf_merge = no; then
2573 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2574 [elf,2,12,0], [--fatal-warnings],
2575 [.section .rodata.str, "aMS", %progbits, 1])
2577 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2578 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2579 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2581 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2582 [elf,2,16,0], [--fatal-warnings],
2583 [.section .text,"axG",@progbits,.foo,comdat])
2584 if test $gcc_cv_as_comdat_group = yes; then
2585 gcc_cv_as_comdat_group_percent=no
2587 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2588 [elf,2,16,0], [--fatal-warnings],
2589 [.section .text,"axG",%progbits,.foo,comdat])
2591 if test x"$ld_is_gold" = xyes; then
2593 elif test $in_tree_ld = yes ; then
2595 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2596 && test $in_tree_ld_is_elf = yes; then
2599 elif echo "$ld_ver" | grep GNU > /dev/null; then
2601 if test 0"$ld_date" -lt 20050308; then
2602 if test -n "$ld_date"; then
2603 # If there was date string, but was earlier than 2005-03-08, fail
2605 elif test "$ld_vers_major" -lt 2; then
2607 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2614 *-*-solaris2.1[1-9]*)
2615 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2616 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2619 # FIXME: Maybe need to refine later when COMDAT group support with
2620 # Sun as is implemented.
2621 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2628 # Assume linkers other than GNU ld don't support COMDAT group.
2634 # Allow overriding the automatic COMDAT group tests above.
2635 AC_ARG_ENABLE(comdat,
2636 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2637 [comdat_group="$enable_comdat"])
2638 if test $comdat_group = no; then
2639 gcc_cv_as_comdat_group=no
2640 gcc_cv_as_comdat_group_percent=no
2642 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2643 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2644 [Define 0/1 if your assembler and linker support COMDAT groups.])
2646 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2647 gcc_cv_as_discriminator,
2651 .loc 1 1 0 discriminator 1],,
2652 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2653 [Define if your assembler supports the .loc discriminator sub-directive.])])
2655 # Thread-local storage - the check is heavily parameterized.
2664 .section ".tdata","awT",@progbits
2667 ldq $27,__tls_get_addr($29) !literal!1
2668 lda $16,foo($29) !tlsgd!1
2669 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2670 ldq $27,__tls_get_addr($29) !literal!2
2671 lda $16,foo($29) !tlsldm!2
2672 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2673 ldq $1,foo($29) !gotdtprel
2674 ldah $2,foo($29) !dtprelhi
2675 lda $3,foo($2) !dtprello
2676 lda $4,foo($29) !dtprel
2677 ldq $1,foo($29) !gottprel
2678 ldah $2,foo($29) !tprelhi
2679 lda $3,foo($2) !tprello
2680 lda $4,foo($29) !tprel'
2683 tls_as_opt=--fatal-warnings
2685 cris-*-*|crisv32-*-*)
2687 .section ".tdata","awT",@progbits
2694 tls_as_opt=--fatal-warnings
2698 .section ".tdata","awT",@progbits
2710 .section ".tdata","awT",@progbits
2714 addil LT%foo-$tls_gdidx$,gp
2715 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2718 addil LT%foo-$tls_ldidx$,gp
2720 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2721 addil LR%foo-$tls_dtpoff$,%ret0
2722 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2724 addil LT%foo-$tls_ieoff$,gp
2725 ldw RT%foo-$tls_ieoff$(%r1),%t2
2728 addil LR%foo-$tls_leoff$,%t1
2729 ldo RR%foo-$tls_leoff$(%r1),%t2'
2732 tls_as_opt=--fatal-warnings
2736 .section ".tdata","awT",%progbits
2749 i[34567]86-*-solaris2.*)
2751 tga_func=___tls_get_addr
2757 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2759 .section .tdata,"awt",@progbits'
2763 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2764 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2768 .section ".tdata","awT",@progbits'
2771 tls_as_opt="--fatal-warnings"
2773 conftest_s="$conftest_s
2777 leal foo@tlsgd(,%ebx,1), %eax
2778 leal foo@tlsldm(%ebx), %eax
2779 leal foo@dtpoff(%eax), %edx
2780 movl foo@gottpoff(%ebx), %eax
2781 subl foo@gottpoff(%ebx), %eax
2782 addl foo@gotntpoff(%ebx), %eax
2783 movl foo@indntpoff, %eax
2784 movl \$foo@tpoff, %eax
2785 subl \$foo@tpoff, %eax
2786 leal foo@ntpoff(%ecx), %eax"
2790 .section ".tdata","awT",@progbits
2794 leaq foo@TLSGD(%rip), %rdi
2795 leaq foo@TLSLD(%rip), %rdi
2796 leaq foo@DTPOFF(%rax), %rdx
2797 movq foo@GOTTPOFF(%rip), %rax
2798 movq $foo@TPOFF, %rax'
2801 tls_as_opt=--fatal-warnings
2805 .section ".tdata","awT",@progbits
2808 addl r16 = @ltoff(@dtpmod(foo#)), gp
2809 addl r17 = @ltoff(@dtprel(foo#)), gp
2810 addl r18 = @ltoff(@tprel(foo#)), gp
2811 addl r19 = @dtprel(foo#), gp
2812 adds r21 = @dtprel(foo#), r13
2813 movl r23 = @dtprel(foo#)
2814 addl r20 = @tprel(foo#), gp
2815 adds r22 = @tprel(foo#), r13
2816 movl r24 = @tprel(foo#)'
2819 tls_as_opt=--fatal-warnings
2823 .section .tdata,"awT",@progbits
2827 addiu $4, $28, %tlsgd(x)
2828 addiu $4, $28, %tlsldm(x)
2829 lui $4, %dtprel_hi(x)
2830 addiu $4, $4, %dtprel_lo(x)
2831 lw $4, %gottprel(x)($28)
2832 lui $4, %tprel_hi(x)
2833 addiu $4, $4, %tprel_lo(x)'
2836 tls_as_opt='-32 --fatal-warnings'
2840 .section .tdata,"awT",@progbits
2845 move.l x@TLSGD(%a5),%a0
2846 move.l x@TLSLDM(%a5),%a0
2847 move.l x@TLSLDO(%a5),%a0
2848 move.l x@TLSIE(%a5),%a0
2849 move.l x@TLSLE(%a5),%a0'
2852 tls_as_opt='--fatal-warnings'
2856 .section ".tdata","awT",@progbits
2864 addi 3,31,ld0@got@tlsgd
2866 addi 3,31,x1@got@tlsld
2869 addis 9,3,x2@dtprel@ha
2870 addi 9,9,x2@dtprel@l
2871 lwz 9,x3@got@tprel(31)
2874 addis 9,2,x2@tprel@ha
2875 addi 9,9,x2@tprel@l'
2878 tls_as_opt="-a32 --fatal-warnings"
2882 .section ".tdata","awT",@progbits
2890 addi 3,2,ld0@got@tlsgd
2896 addi 3,2,x1@got@tlsld
2902 addis 9,3,x2@dtprel@ha
2903 addi 9,9,x2@dtprel@l
2906 ld 9,x3@got@dtprel(2)
2912 tls_as_opt="-a64 --fatal-warnings"
2916 .section ".tdata","awT",@progbits
2925 l %r1,foo@GOTNTPOFF(%r12)
2926 l %r1,0(%r1):tls_load:foo
2927 bas %r14,0(%r1,%r13):tls_gdcall:foo
2928 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2931 tls_as_opt="-m31 --fatal-warnings"
2935 .section ".tdata","awT",@progbits
2943 lg %r1,foo@GOTNTPOFF(%r12)
2944 larl %r1,foo@INDNTPOFF
2945 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2946 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2949 tls_as_opt="-m64 -Aesame --fatal-warnings"
2951 sh-*-* | sh[34]-*-*)
2953 .section ".tdata","awT",@progbits
2963 tls_as_opt=--fatal-warnings
2967 sparc*-sun-solaris2.*)
2969 tga_func=__tls_get_addr
2975 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2977 .section ".tdata",#alloc,#write,#tls'
2982 .section ".tdata","awT",@progbits'
2985 tls_as_opt="-32 --fatal-warnings"
2987 conftest_s="$conftest_s
2990 sethi %tgd_hi22(foo), %o0
2991 add %o0, %tgd_lo10(foo), %o1
2992 add %l7, %o1, %o0, %tgd_add(foo)
2993 call __tls_get_addr, %tgd_call(foo)
2994 sethi %tldm_hi22(foo), %l1
2995 add %l1, %tldm_lo10(foo), %l2
2996 add %l7, %l2, %o0, %tldm_add(foo)
2997 call __tls_get_addr, %tldm_call(foo)
2998 sethi %tldo_hix22(foo), %l3
2999 xor %l3, %tldo_lox10(foo), %l4
3000 add %o0, %l4, %l5, %tldo_add(foo)
3001 sethi %tie_hi22(foo), %o3
3002 add %o3, %tie_lo10(foo), %o3
3003 ld [%l7 + %o3], %o2, %tie_ld(foo)
3004 add %g7, %o2, %o4, %tie_add(foo)
3005 sethi %tle_hix22(foo), %l1
3006 xor %l1, %tle_lox10(foo), %o5
3007 ld [%g7 + %o5], %o1"
3011 .section ".tdata","awT",@progbits
3014 movi a8, foo@TLSFUNC
3015 movi a10, foo@TLSARG
3016 callx8.tls a8, foo@TLSCALL'
3023 if test "x$enable_tls" = xno ; then
3024 : # TLS explicitly disabled.
3025 elif test "x$enable_tls" = xyes ; then
3026 set_have_as_tls=yes # TLS explicitly enabled.
3027 elif test -z "$tls_first_major"; then
3028 : # If we don't have a check, assume no support.
3030 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3031 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3032 [set_have_as_tls=yes])
3036 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3037 # with TLS support are in use, native TLS cannot work.
3041 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3042 # gld with TLS support are in use, native TLS cannot work.
3045 # TLS was introduced in the Solaris 9 FCS release and backported to
3046 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3047 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3048 # ld and GCC don't support any longer.
3050 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3052 # Check ld and ld.so.1 TLS support.
3053 if echo "$ld_ver" | grep GNU > /dev/null; then
3054 # Assume all interesting versions of GNU ld have TLS support.
3055 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3059 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3061 min_tls_ld_vers_minor=280
3063 # Solaris 8/SPARC ld has TLS support since version 1.272.
3064 sparc*-*-solaris2.8)
3065 min_tls_ld_vers_minor=272
3067 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3069 min_tls_ld_vers_minor=374
3071 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3072 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3073 min_tls_ld_vers_minor=343
3076 if test "$ld_vers_major" -gt 1 || \
3077 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3083 AC_MSG_RESULT($ld_tls_support)
3086 save_LDFLAGS="$LDFLAGS"
3090 AC_MSG_CHECKING(alternate thread library)
3092 # TLS support was backported to Solaris 8 patches, but only lives in
3093 # the alternate thread library which became the default in Solaris 9.
3094 # We want to always use that, irrespective of TLS support.
3096 # Take multilib subdir into account. There's no spec to handle
3097 # this. The 64 symlink exists since Solaris 8.
3098 lwp_dir=/usr/lib/lwp
3099 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3100 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3107 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3108 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3109 [Define to the linker flags to use for -pthread.])
3110 AC_MSG_RESULT($lwp_dir)
3112 AC_MSG_CHECKING(library containing $tga_func)
3113 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3114 # (32-bit x86) only lived in libthread, so check for that. Keep
3115 # set_have_as_tls if found, disable if not.
3116 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3117 # Clear LIBS if we cannot support TLS.
3118 if test $set_have_as_tls = no; then
3121 # Always define LIB_TLS_SPEC, even without TLS support.
3122 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3123 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3124 AC_MSG_RESULT($LIBS)
3127 LDFLAGS="$save_LDFLAGS"
3130 if test $set_have_as_tls = yes ; then
3131 AC_DEFINE(HAVE_AS_TLS, 1,
3132 [Define if your assembler and linker support thread-local storage.])
3135 # Target-specific assembler checks.
3137 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3138 gcc_cv_ld_static_dynamic=no
3139 gcc_cv_ld_static_option='-Bstatic'
3140 gcc_cv_ld_dynamic_option='-Bdynamic'
3141 if test $in_tree_ld = yes ; then
3142 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3143 gcc_cv_ld_static_dynamic=yes
3145 elif test x$gcc_cv_ld != x; then
3146 # Check if linker supports -Bstatic/-Bdynamic option
3147 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3148 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3149 gcc_cv_ld_static_dynamic=yes
3152 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3154 gcc_cv_ld_static_dynamic=yes
3155 gcc_cv_ld_static_option="-noso"
3156 gcc_cv_ld_dynamic_option="-so_archive"
3158 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3160 gcc_cv_ld_static_dynamic=yes
3162 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3164 gcc_cv_ld_static_dynamic=yes
3169 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3170 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3171 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3172 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3173 [Define to the linker option to disable use of shared objects.])
3174 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3175 [Define to the linker option to enable use of shared objects.])
3177 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3179 if test x"$demangler_in_ld" = xyes; then
3180 AC_MSG_CHECKING(linker --demangle support)
3181 gcc_cv_ld_demangle=no
3182 if test $in_tree_ld = yes; then
3183 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3184 gcc_cv_ld_demangle=yes
3186 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3187 # Check if the GNU linker supports --demangle option
3188 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3189 gcc_cv_ld_demangle=yes
3192 if test x"$gcc_cv_ld_demangle" = xyes; then
3193 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3194 [Define if your linker supports --demangle option.])
3196 AC_MSG_RESULT($gcc_cv_ld_demangle)
3199 AC_MSG_CHECKING(linker plugin support)
3201 if test -f liblto_plugin.la; then
3202 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3203 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
3205 elif test "$ld_is_gold" = yes -a "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -eq 20; then
3209 elif test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld" && echo "$ld_ver" | grep GNU > /dev/null; then
3210 # Require GNU ld or gold 2.21+ for plugin support by default.
3211 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3213 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3214 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3217 elif test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" != x"$gcc_cv_ld"; then
3218 # Allow -fuse-linker-plugin if plugin linker differs from
3219 # default/specified linker.
3223 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3224 [Define to the level of your linker's plugin support.])
3225 AC_MSG_RESULT($gcc_cv_lto_plugin)
3228 # All TARGET_ABI_OSF targets.
3229 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3230 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3231 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3234 extbl $3, $2, $3 !lituse_bytoff!1
3235 ldq $2, a($29) !literal!1
3236 ldq $4, b($29) !literal!2
3237 ldq_u $3, 0($2) !lituse_base!1
3238 ldq $27, f($29) !literal!5
3239 jsr $26, ($27), f !lituse_jsr!5
3240 ldah $29, 0($26) !gpdisp!3
3241 lda $0, c($29) !gprel
3242 ldah $1, d($29) !gprelhigh
3243 lda $1, d($1) !gprellow
3244 lda $29, 0($29) !gpdisp!3],,
3245 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3246 [Define if your assembler supports explicit relocations.])])
3247 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3248 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3251 ldq $27, a($29) !literal!1
3252 jsr $26, ($27), a !lituse_jsrdirect!1],,
3253 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3254 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3258 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3259 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3260 [-no-mul-bug-abort], [.text],,
3261 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3262 [Define if your assembler supports the -no-mul-bug-abort option.])])
3266 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3267 [.register %g2, #scratch],,
3268 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3269 [Define if your assembler supports .register.])])
3271 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3273 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3274 [Define if your assembler supports -relax option.])])
3276 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3277 gcc_cv_as_sparc_gotdata_op,,
3284 sethi %gdop_hix22(foo), %g1
3285 xor %g1, %gdop_lox10(foo), %g1
3286 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3287 [if test x$gcc_cv_ld != x \
3288 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3289 if test x$gcc_cv_objdump != x; then
3290 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3291 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3292 gcc_cv_as_sparc_gotdata_op=no
3294 gcc_cv_as_sparc_gotdata_op=yes
3299 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3300 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3302 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3303 gcc_cv_as_sparc_ua_pcrel,,
3311 .uaword %r_disp32(foo)],
3312 [if test x$gcc_cv_ld != x \
3313 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3314 gcc_cv_as_sparc_ua_pcrel=yes
3317 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3318 [Define if your assembler and linker support unaligned PC relative relocs.])
3320 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3321 gcc_cv_as_sparc_ua_pcrel_hidden,,
3326 .uaword %r_disp32(foo)
3327 .byte 0x32, 0x33, 0x34
3332 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3333 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3334 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3335 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3336 if $gcc_cv_objdump -R conftest 2> /dev/null \
3337 | grep 'DISP32' > /dev/null 2>&1; then
3340 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3344 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3345 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3346 ]) # unaligned pcrel relocs
3348 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3349 gcc_cv_as_sparc_offsetable_lo10,,
3352 or %g1, %lo(ab) + 12, %g1
3353 or %g1, %lo(ab + 12), %g1],
3354 [if test x$gcc_cv_objdump != x \
3355 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3356 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3357 gcc_cv_as_sparc_offsetable_lo10=yes
3359 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3360 [Define if your assembler supports offsetable %lo().])])
3364 i[34567]86-*-* | x86_64-*-*)
3368 # Full C++ conformance when using a shared libstdc++-v3 requires some
3369 # support from the Cygwin DLL, which in more recent versions exports
3370 # wrappers to aid in interposing and redirecting operators new, delete,
3371 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3372 # are configuring for a version of Cygwin that exports the wrappers.
3373 if test x$host = x$target; then
3374 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3376 # Can't check presence of libc functions during cross-compile, so
3377 # we just have to assume we're building for an up-to-date target.
3378 gcc_ac_cygwin_dll_wrappers=yes
3380 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3381 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3382 [Define if you want to generate code by default that assumes that the
3383 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3386 cygwin* | pe | mingw32*)
3387 # Recent binutils allows the three-operand form of ".comm" on PE. This
3388 # definition is used unconditionally to initialise the default state of
3389 # the target option variable that governs usage of the feature.
3390 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3391 [2,19,52],,[.comm foo,1,32])
3392 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3393 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3394 [Define if your assembler supports specifying the alignment
3395 of objects allocated using the GAS .comm command.])
3396 # Used for DWARF 2 in PE
3397 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3398 gcc_cv_as_ix86_pe_secrel32,
3404 [if test x$gcc_cv_ld != x \
3405 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3406 gcc_cv_as_ix86_pe_secrel32=yes
3409 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3410 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3411 # Test if the assembler supports the extended form of the .section
3412 # directive that specifies section alignment. LTO support uses this,
3413 # but normally only after installation, so we warn but don't fail the
3414 # configure if LTO is enabled but the assembler does not support it.
3415 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3416 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3417 if test x$gcc_cv_as_section_has_align != xyes; then
3418 case ",$enable_languages," in
3420 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3427 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3428 gcc_cv_as_ix86_filds,,,
3429 [filds mem; fists mem],,
3430 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3431 [Define if your assembler uses filds and fists mnemonics.])])
3433 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3434 gcc_cv_as_ix86_fildq,,,
3435 [fildq mem; fistpq mem],,
3436 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3437 [Define if your assembler uses fildq and fistq mnemonics.])])
3439 gcc_GAS_CHECK_FEATURE([cmov syntax],
3440 gcc_cv_as_ix86_cmov_sun_syntax,,,
3441 [cmovl.l %edx, %eax],,
3442 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3443 [Define if your assembler supports the Sun syntax for cmov.])])
3445 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3446 gcc_cv_as_ix86_ffreep,,,
3448 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3449 [Define if your assembler supports the ffreep mnemonic.])])
3451 gcc_GAS_CHECK_FEATURE([.quad directive],
3452 gcc_cv_as_ix86_quad,,,
3454 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3455 [Define if your assembler supports the .quad directive.])])
3457 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3458 gcc_cv_as_ix86_sahf,,,
3461 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3462 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3464 gcc_GAS_CHECK_FEATURE([swap suffix],
3465 gcc_cv_as_ix86_swap,,,
3466 [movl.s %esp, %ebp],,
3467 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3468 [Define if your assembler supports the swap suffix.])])
3470 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3471 gcc_cv_as_ix86_diff_sect_delta,,,
3479 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3480 [Define if your assembler supports the subtraction of symbols in different sections.])])
3482 # These two are used unconditionally by i386.[ch]; it is to be defined
3483 # to 1 if the feature is present, 0 otherwise.
3484 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3485 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3491 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3492 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3493 [Define true if the assembler supports '.long foo@GOTOFF'.])
3495 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3496 gcc_cv_as_ix86_rep_lock_prefix,,,
3498 lock addl %edi, (%eax,%esi)
3499 lock orl $0, (%esp)],,
3500 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3501 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3506 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3507 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3509 addl r15 = @ltoffx(x#), gp
3511 ld8.mov r16 = [[r15]], x#],,
3512 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3513 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3519 *-*-aix*) conftest_s=' .machine "pwr5"
3523 gcc_GAS_CHECK_FEATURE([.machine directive support],
3524 gcc_cv_as_machine_directive,,,
3525 [ .machine ppc7400])
3526 if test x$gcc_cv_as_machine_directive != xyes; then
3527 echo "*** This target requires an assembler supporting \".machine\"" >&2
3528 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3529 test x$build = x$target && exit 1
3533 *) conftest_s=' .machine power4
3538 gcc_GAS_CHECK_FEATURE([mfcr field support],
3539 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3541 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3542 [Define if your assembler supports mfcr field.])])
3545 *-*-aix*) conftest_s=' .machine "pwr5"
3548 *) conftest_s=' .machine power5
3553 gcc_GAS_CHECK_FEATURE([popcntb support],
3554 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3556 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3557 [Define if your assembler supports popcntb field.])])
3560 *-*-aix*) conftest_s=' .machine "pwr5x"
3563 *) conftest_s=' .machine power5
3568 gcc_GAS_CHECK_FEATURE([fp round support],
3569 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3571 [AC_DEFINE(HAVE_AS_FPRND, 1,
3572 [Define if your assembler supports fprnd.])])
3575 *-*-aix*) conftest_s=' .machine "pwr6"
3578 *) conftest_s=' .machine power6
3583 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3584 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3586 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3587 [Define if your assembler supports mffgpr and mftgpr.])])
3590 *-*-aix*) conftest_s=' .csect .text[[PR]]
3592 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3596 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3597 *) conftest_s=' .text
3599 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3602 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3603 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3605 [AC_DEFINE(HAVE_AS_REL16, 1,
3606 [Define if your assembler supports R_PPC_REL16 relocs.])])
3609 *-*-aix*) conftest_s=' .machine "pwr6"
3612 *) conftest_s=' .machine power6
3617 gcc_GAS_CHECK_FEATURE([compare bytes support],
3618 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3620 [AC_DEFINE(HAVE_AS_CMPB, 1,
3621 [Define if your assembler supports cmpb.])])
3624 *-*-aix*) conftest_s=' .machine "pwr6"
3627 *) conftest_s=' .machine power6
3632 gcc_GAS_CHECK_FEATURE([decimal float support],
3633 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3635 [AC_DEFINE(HAVE_AS_DFP, 1,
3636 [Define if your assembler supports DFP instructions.])])
3639 *-*-aix*) conftest_s=' .machine "pwr7"
3642 *) conftest_s=' .machine power7
3647 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3648 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3650 [AC_DEFINE(HAVE_AS_VSX, 1,
3651 [Define if your assembler supports VSX instructions.])])
3654 *-*-aix*) conftest_s=' .machine "pwr7"
3657 *) conftest_s=' .machine power7
3662 gcc_GAS_CHECK_FEATURE([popcntd support],
3663 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3665 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3666 [Define if your assembler supports POPCNTD instructions.])])
3669 *-*-aix*) conftest_s=' .csect .text[[PR]]
3671 *) conftest_s=' .text
3675 gcc_GAS_CHECK_FEATURE([lwsync support],
3676 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3678 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3679 [Define if your assembler supports LWSYNC instructions.])])
3682 *-*-aix*) conftest_s=' .machine "476"
3685 *) conftest_s=' .machine "476"
3690 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3691 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3693 [AC_DEFINE(HAVE_AS_DCI, 1,
3694 [Define if your assembler supports the DCI/ICI instructions.])])
3696 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3697 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3698 [.gnu_attribute 4,1],,
3699 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3700 [Define if your assembler supports .gnu_attribute.])])
3702 gcc_GAS_CHECK_FEATURE([tls marker support],
3703 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3704 [ bl __tls_get_addr(x@tlsgd)],,
3705 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3706 [Define if your assembler supports arg info for __tls_get_addr.])])
3710 gcc_GAS_CHECK_FEATURE([.ref support],
3711 gcc_cv_as_aix_ref, [2.21.0],,
3712 [ .csect stuff[[rw]]
3718 [AC_DEFINE(HAVE_AS_REF, 1,
3719 [Define if your assembler supports .ref])])
3725 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3726 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3727 [ lw $4,%gp_rel(foo)($4)],,
3728 [if test x$target_cpu_default = x
3729 then target_cpu_default=MASK_EXPLICIT_RELOCS
3730 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3732 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3733 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3734 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3735 [Define if the assembler understands -mno-shared.])])
3737 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3738 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3739 [.gnu_attribute 4,1],,
3740 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3741 [Define if your assembler supports .gnu_attribute.])])
3743 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3744 gcc_cv_as_mips_dtprelword, [2,18,0],,
3745 [.section .tdata,"awT",@progbits
3749 .dtprelword x+0x8000],,
3750 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3751 [Define if your assembler supports .dtprelword.])])
3753 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3754 gcc_cv_as_mips_dspr1_mult,,,
3764 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3765 [Define if your assembler supports DSPR1 mult.])])
3767 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3768 gcc_cv_as_ld_jalr_reloc=no
3769 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3770 if test $in_tree_ld = yes ; then
3771 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3772 && test $in_tree_ld_is_elf = yes; then
3773 gcc_cv_as_ld_jalr_reloc=yes
3775 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3776 echo ' .ent x' > conftest.s
3777 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3778 echo ' ld $25,%call16(y)($28)' >> conftest.s
3779 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3780 echo '1: jalr $25' >> conftest.s
3781 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3782 echo '1: jalr $25' >> conftest.s
3783 echo ' .end x' >> conftest.s
3784 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3785 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3786 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3787 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3788 gcc_cv_as_ld_jalr_reloc=yes
3794 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3795 if test x$target_cpu_default = x; then
3796 target_cpu_default=MASK_RELAX_PIC_CALLS
3798 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3801 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3803 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3804 [gcc_cv_ld_mips_personality_relaxation],
3805 [gcc_cv_ld_mips_personality_relaxation=no
3806 if test $in_tree_ld = yes ; then
3807 if test "$gcc_cv_gld_major_version" -eq 2 \
3808 -a "$gcc_cv_gld_minor_version" -ge 21 \
3809 -o "$gcc_cv_gld_major_version" -gt 2; then
3810 gcc_cv_ld_mips_personality_relaxation=yes
3812 elif test x$gcc_cv_as != x \
3813 -a x$gcc_cv_ld != x \
3814 -a x$gcc_cv_readelf != x ; then
3815 cat > conftest.s <<EOF
3817 .cfi_personality 0x80,indirect_ptr
3824 .section .data,"aw",@progbits
3828 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3829 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3830 if $gcc_cv_readelf -d conftest 2>&1 \
3831 | grep TEXTREL > /dev/null 2>&1; then
3833 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3834 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3837 gcc_cv_ld_mips_personality_relaxation=yes
3841 rm -f conftest.s conftest.o conftest])
3842 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3843 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3844 [Define if your linker can relax absolute .eh_frame personality
3845 pointers into PC-relative form.])
3850 # Mips and HP-UX need the GNU assembler.
3851 # Linux on IA64 might be able to use the Intel assembler.
3854 mips*-*-* | *-*-hpux* )
3855 if test x$gas_flag = xyes \
3856 || test x"$host" != x"$build" \
3857 || test ! -x "$gcc_cv_as" \
3858 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3861 echo "*** This configuration requires the GNU assembler" >&2
3867 # ??? Not all targets support dwarf2 debug_line, even within a version
3868 # of gas. Moreover, we need to emit a valid instruction to trigger any
3869 # info to the output file. So, as supported targets are added to gas 2.11,
3870 # add some instruction here to (also) show we expect this might work.
3871 # ??? Once 2.11 is released, probably need to add first known working
3872 # version to the per-target configury.
3874 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3875 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3885 if test x"$insn" != x; then
3887 .file 1 \"conftest.s\"
3890 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3891 gcc_cv_as_dwarf2_debug_line,
3892 [elf,2,11,0],, [$conftest_s],
3893 [if test x$gcc_cv_objdump != x \
3894 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3895 | grep debug_line > /dev/null 2>&1; then
3896 gcc_cv_as_dwarf2_debug_line=yes
3899 # The .debug_line file table must be in the exact order that
3900 # we specified the files, since these indices are also used
3901 # by DW_AT_decl_file. Approximate this test by testing if
3902 # the assembler bitches if the same index is assigned twice.
3903 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3904 gcc_cv_as_dwarf2_file_buggy,,,
3908 if test $gcc_cv_as_dwarf2_debug_line = yes \
3909 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3910 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3911 [Define if your assembler supports dwarf2 .file/.loc directives,
3912 and preserves file table indices exactly as given.])
3915 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3916 gcc_cv_as_gdwarf2_flag,
3917 [elf,2,11,0], [--gdwarf2], [$insn],,
3918 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3919 [Define if your assembler supports the --gdwarf2 option.])])
3921 gcc_GAS_CHECK_FEATURE([--gstabs option],
3922 gcc_cv_as_gstabs_flag,
3923 [elf,2,11,0], [--gstabs], [$insn],
3924 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3925 # and warns about it, but still exits successfully. So check for
3927 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3929 else gcc_cv_as_gstabs_flag=yes
3931 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3932 [Define if your assembler supports the --gstabs option.])])
3934 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3935 gcc_cv_as_debug_prefix_map_flag,
3936 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3937 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3938 [Define if your assembler supports the --debug-prefix-map option.])])
3941 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3944 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3945 [Define if your assembler supports .lcomm with an alignment field.])])
3947 AC_ARG_ENABLE(gnu-unique-object,
3948 [AS_HELP_STRING([--enable-gnu-unique-object],
3949 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
3950 [case $enable_gnu_unique_object in
3952 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3953 Valid choices are 'yes' and 'no'.]) ;;
3955 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3957 [.type foo, @gnu_unique_object],,
3958 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3959 [[if test x$host = x$build -a x$host = x$target &&
3960 ldd --version 2>/dev/null &&
3961 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3962 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3963 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3964 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3965 if test "$glibcnum" -ge 2011 ; then
3966 enable_gnu_unique_object=yes
3969 if test x$enable_gnu_unique_object = xyes; then
3970 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3971 [Define if your assembler supports @gnu_unique_object.])
3974 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3975 [gcc_cv_as_line_zero],
3976 [gcc_cv_as_line_zero=no
3977 if test $in_tree_gas = yes; then
3978 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3979 elif test "x$gcc_cv_as" != x; then
3980 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3981 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3982 test "x`cat conftest.out`" = x
3984 gcc_cv_as_line_zero=yes
3986 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3987 cat conftest.s >&AS_MESSAGE_LOG_FD
3988 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3989 cat conftest.out >&AS_MESSAGE_LOG_FD
3991 rm -f conftest.o conftest.s conftest.out
3993 if test "x$gcc_cv_as_line_zero" = xyes; then
3994 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3995 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3998 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3999 gcc_cv_ld_eh_frame_hdr=no
4000 if test $in_tree_ld = yes ; then
4001 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4002 && test $in_tree_ld_is_elf = yes; then
4003 gcc_cv_ld_eh_frame_hdr=yes
4005 elif test x$gcc_cv_ld != x; then
4006 if echo "$ld_ver" | grep GNU > /dev/null; then
4007 # Check if linker supports --eh-frame-hdr option
4008 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4009 gcc_cv_ld_eh_frame_hdr=yes
4014 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4015 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4016 gcc_cv_ld_eh_frame_hdr=yes
4022 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4023 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4024 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4025 [Define if your linker supports .eh_frame_hdr.])
4027 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4029 AC_MSG_CHECKING(linker position independent executable support)
4031 if test $in_tree_ld = yes ; then
4032 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4033 && test $in_tree_ld_is_elf = yes; then
4036 elif test x$gcc_cv_ld != x; then
4037 # Check if linker supports -pie option
4038 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4042 if test x"$gcc_cv_ld_pie" = xyes; then
4043 AC_DEFINE(HAVE_LD_PIE, 1,
4044 [Define if your linker supports -pie option.])
4046 AC_MSG_RESULT($gcc_cv_ld_pie)
4048 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4049 gcc_cv_ld_eh_gc_sections=no
4050 if test $in_tree_ld = yes ; then
4051 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4052 && test $in_tree_ld_is_elf = yes; then
4053 gcc_cv_ld_eh_gc_sections=yes
4055 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4056 cat > conftest.s <<EOF
4059 .type _start, @function
4062 .size _start, .-_start
4063 .section .text.foo,"ax",@progbits
4064 .type foo, @function
4068 .section .gcc_except_table.foo,"a",@progbits
4071 .section .eh_frame,"a",@progbits
4074 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4075 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4076 | grep "gc-sections option ignored" > /dev/null; then
4077 gcc_cv_ld_eh_gc_sections=no
4078 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4079 | grep gcc_except_table > /dev/null; then
4080 gcc_cv_ld_eh_gc_sections=yes
4081 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4082 if test x$gcc_cv_as_comdat_group != xyes; then
4083 gcc_cv_ld_eh_gc_sections=no
4084 cat > conftest.s <<EOF
4087 .type _start, @function
4090 .size _start, .-_start
4091 .section .gnu.linkonce.t.foo,"ax",@progbits
4092 .type foo, @function
4096 .section .gcc_except_table.foo,"a",@progbits
4099 .section .eh_frame,"a",@progbits
4102 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4103 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4104 | grep "gc-sections option ignored" > /dev/null; then
4105 gcc_cv_ld_eh_gc_sections=no
4106 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4107 | grep gcc_except_table > /dev/null; then
4108 gcc_cv_ld_eh_gc_sections=yes
4114 rm -f conftest.s conftest.o conftest
4118 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4119 gcc_cv_ld_eh_gc_sections=no
4122 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4123 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4124 [Define if your linker supports garbage collection of
4125 sections in presence of EH frames.])
4127 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4129 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4130 gcc_cv_ld_eh_gc_sections_bug=no
4131 if test $in_tree_ld = yes ; then
4132 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4133 && test $in_tree_ld_is_elf = yes; then
4134 gcc_cv_ld_eh_gc_sections_bug=yes
4136 elif test x$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
4137 gcc_cv_ld_eh_gc_sections_bug=yes
4138 cat > conftest.s <<EOF
4141 .type _start, @function
4144 .size _start, .-_start
4145 .section .text.startup.foo,"ax",@progbits
4146 .type foo, @function
4150 .section .gcc_except_table.foo,"a",@progbits
4153 .section .eh_frame,"a",@progbits
4156 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4157 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4158 | grep "gc-sections option ignored" > /dev/null; then
4160 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4161 | grep gcc_except_table > /dev/null; then
4162 gcc_cv_ld_eh_gc_sections_bug=no
4165 rm -f conftest.s conftest.o conftest
4167 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4168 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4169 [Define if your linker has buggy garbage collection of
4170 sections support when .text.startup.foo like sections are used.])
4172 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4178 AC_CACHE_CHECK(linker --as-needed support,
4179 gcc_cv_ld_as_needed,
4180 [gcc_cv_ld_as_needed=no
4181 if test $in_tree_ld = yes ; then
4182 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4183 && test $in_tree_ld_is_elf = yes; then
4184 gcc_cv_ld_as_needed=yes
4186 elif test x$gcc_cv_ld != x; then
4187 # Check if linker supports --as-needed and --no-as-needed options
4188 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4189 gcc_cv_ld_as_needed=yes
4193 if test x"$gcc_cv_ld_as_needed" = xyes; then
4194 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4195 [Define if your linker supports --as-needed and --no-as-needed options.])
4198 case "$target:$tm_file" in
4199 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4200 AC_CACHE_CHECK(linker support for omitting dot symbols,
4201 gcc_cv_ld_no_dot_syms,
4202 [gcc_cv_ld_no_dot_syms=no
4203 if test $in_tree_ld = yes ; then
4204 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4205 gcc_cv_ld_no_dot_syms=yes
4207 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4208 cat > conftest1.s <<EOF
4212 cat > conftest2.s <<EOF
4213 .section ".opd","aw"
4218 .quad .LEfoo,.TOC.@tocbase,0
4224 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4225 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4226 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4227 gcc_cv_ld_no_dot_syms=yes
4229 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4232 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4233 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4234 [Define if your PowerPC64 linker only needs function descriptor syms.])
4237 AC_CACHE_CHECK(linker large toc support,
4238 gcc_cv_ld_large_toc,
4239 [gcc_cv_ld_large_toc=no
4240 if test $in_tree_ld = yes ; then
4241 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4242 gcc_cv_ld_large_toc=yes
4244 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4245 cat > conftest.s <<EOF
4246 .section ".tbss","awT",@nobits
4252 addis 9,13,ie0@got@tprel@ha
4253 ld 9,ie0@got@tprel@l(9)
4255 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4256 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4257 gcc_cv_ld_large_toc=yes
4259 rm -f conftest conftest.o conftest.s
4262 if test x"$gcc_cv_ld_large_toc" = xyes; then
4263 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4264 [Define if your PowerPC64 linker supports a large TOC.])
4269 AC_CACHE_CHECK(linker --build-id support,
4271 [gcc_cv_ld_buildid=no
4272 if test $in_tree_ld = yes ; then
4273 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4274 "$gcc_cv_gld_minor_version" -ge 18 -o \
4275 "$gcc_cv_gld_major_version" -gt 2 \
4276 && test $in_tree_ld_is_elf = yes; then
4277 gcc_cv_ld_buildid=yes
4279 elif test x$gcc_cv_ld != x; then
4280 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4281 gcc_cv_ld_buildid=yes
4284 if test x"$gcc_cv_ld_buildid" = xyes; then
4285 AC_DEFINE(HAVE_LD_BUILDID, 1,
4286 [Define if your linker supports --build-id.])
4289 AC_ARG_ENABLE(linker-build-id,
4290 [ --enable-linker-build-id
4291 compiler will always pass --build-id to linker],
4293 enable_linker_build_id=no)
4295 if test x"$enable_linker_build_id" = xyes; then
4296 if test x"$gcc_cv_ld_buildid" = xyes; then
4297 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4298 [Define if gcc should always pass --build-id to linker.])
4300 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4304 # In binutils 2.21, GNU ld gained support for new emulations fully
4305 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4306 AC_CACHE_CHECK(linker *_sol2 emulation support,
4307 gcc_cv_ld_sol2_emulation,
4308 [gcc_cv_ld_sol2_emulation=no
4309 if test $in_tree_ld = yes ; then
4310 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4311 "$gcc_cv_gld_minor_version" -ge 21 -o \
4312 "$gcc_cv_gld_major_version" -gt 2 \
4313 && test $in_tree_ld_is_elf = yes; then
4314 gcc_cv_ld_sol2_emulation=yes
4316 elif test x$gcc_cv_ld != x; then
4317 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4318 grep _sol2 > /dev/null; then
4319 gcc_cv_ld_sol2_emulation=yes
4322 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4323 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4324 [Define if your linker supports the *_sol2 emulations.])
4327 AC_CACHE_CHECK(linker --sysroot support,
4329 [gcc_cv_ld_sysroot=no
4330 if test $in_tree_ld = yes ; then
4331 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4332 gcc_cv_ld_sysroot=yes
4334 elif test x$gcc_cv_ld != x; then
4335 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4336 gcc_cv_ld_sysroot=yes
4339 if test x"$gcc_cv_ld_sysroot" = xyes; then
4340 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4341 [Define if your linker supports --sysroot.])
4344 if test x$with_sysroot = x && test x$host = x$target \
4345 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4346 && test "$prefix" != "NONE"; then
4347 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4348 [Define to PREFIX/include if cpp should also search that directory.])
4351 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4352 if test "x$with_headers" != x; then
4353 target_header_dir=$with_headers
4354 elif test "x$with_sysroot" = x; then
4355 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4356 elif test "x$with_build_sysroot" != "x"; then
4357 target_header_dir="${with_build_sysroot}/usr/include"
4358 elif test "x$with_sysroot" = xyes; then
4359 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4361 target_header_dir="${with_sysroot}/usr/include"
4364 target_header_dir=/usr/include
4367 # Test for stack protector support in target C library.
4368 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4369 gcc_cv_libc_provides_ssp,
4370 [gcc_cv_libc_provides_ssp=no
4372 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4373 [# glibc 2.4 and later provides __stack_chk_fail and
4374 # either __stack_chk_guard, or TLS access to stack guard canary.
4375 if test -f $target_header_dir/features.h \
4376 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4377 $target_header_dir/features.h > /dev/null; then
4378 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4379 $target_header_dir/features.h > /dev/null; then
4380 gcc_cv_libc_provides_ssp=yes
4381 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4382 $target_header_dir/features.h > /dev/null \
4383 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4384 $target_header_dir/features.h > /dev/null; then
4385 gcc_cv_libc_provides_ssp=yes
4386 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4387 $target_header_dir/features.h > /dev/null && \
4388 test -f $target_header_dir/bits/uClibc_config.h && \
4389 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4390 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4391 gcc_cv_libc_provides_ssp=yes
4396 # Avoid complicated tests (see
4397 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4398 # simply assert that glibc does provide this, which is true for all
4399 # realistically usable GNU/Hurd configurations.
4400 gcc_cv_libc_provides_ssp=yes;;
4401 *-*-darwin* | *-*-freebsd*)
4402 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4403 [echo "no __stack_chk_fail on this target"])
4405 *) gcc_cv_libc_provides_ssp=no ;;
4408 if test x$gcc_cv_libc_provides_ssp = xyes; then
4409 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4410 [Define if your target C library provides stack protector support])
4413 # Test for <sys/sdt.h> on the target.
4414 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4415 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4417 if test -f $target_header_dir/sys/sdt.h; then
4418 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4419 [Define if your target C library provides sys/sdt.h])
4421 AC_MSG_RESULT($have_sys_sdt_h)
4423 # Check if TFmode long double should be used by default or not.
4424 # Some glibc targets used DFmode long double, but with glibc 2.4
4425 # and later they can use TFmode.
4427 powerpc*-*-linux* | \
4431 AC_ARG_WITH(long-double-128,
4432 [ --with-long-double-128 Use 128-bit long double by default.],
4433 gcc_cv_target_ldbl128="$with_long_double_128",
4434 [[gcc_cv_target_ldbl128=no
4435 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4436 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4437 && gcc_cv_target_ldbl128=yes
4441 if test x$gcc_cv_target_ldbl128 = xyes; then
4442 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4443 [Define if TFmode long double should be the default])
4446 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4447 gcc_cv_target_dl_iterate_phdr=unknown
4450 # <link.h> needs both a dl_iterate_phdr declaration and support for
4451 # compilation with largefile support.
4452 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4453 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4454 gcc_cv_target_dl_iterate_phdr=yes
4456 gcc_cv_target_dl_iterate_phdr=no
4460 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4461 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4462 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4463 [Define if your target C library provides the `dl_iterate_phdr' function.])
4465 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4467 # Find out what GC implementation we want, or may, use.
4469 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4477 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4480 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4485 echo "Using $GGC for garbage collection."
4487 # Libraries to use on the host. This will normally be set by the top
4488 # level Makefile. Here we simply capture the value for our Makefile.
4489 if test -z "${HOST_LIBS+set}"; then
4494 # Use the system's zlib library.
4496 zlibinc="-I\$(srcdir)/../zlib"
4497 AC_ARG_WITH(system-zlib,
4498 [ --with-system-zlib use installed libz],
4505 dnl Very limited version of automake's enable-maintainer-mode
4507 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4508 dnl maintainer-mode is disabled by default
4509 AC_ARG_ENABLE(maintainer-mode,
4510 [ --enable-maintainer-mode
4511 enable make rules and dependencies not useful
4512 (and sometimes confusing) to the casual installer],
4513 maintainer_mode=$enableval,
4516 AC_MSG_RESULT($maintainer_mode)
4518 if test "$maintainer_mode" = "yes"; then
4529 # Make empty files to contain the specs and options for each language.
4530 # Then add #include lines to for a compiler that has specs and/or options.
4536 # These (without "all_") are set in each config-lang.in.
4537 # `language' must be a single word so is spelled singularly.
4540 all_outputs='Makefile'
4541 # List of language makefile fragments.
4543 # Additional files for gengtype
4544 all_gtfiles="$target_gtfiles"
4546 # These are the languages that are set in --enable-languages,
4547 # and are available in the GCC tree.
4548 all_selected_languages=
4550 # Add the language fragments.
4551 # Languages are added via two mechanisms. Some information must be
4552 # recorded in makefile variables, these are defined in config-lang.in.
4553 # We accumulate them and plug them into the main Makefile.
4554 # The other mechanism is a set of hooks for each of the main targets
4555 # like `clean', `install', etc.
4557 language_hooks="Make-hooks"
4559 for lang in ${srcdir}/*/config-lang.in
4562 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4564 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4565 if test "x$lang_alias" = x
4567 echo "$lang doesn't set \$language." 1>&2
4570 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4571 subdirs="$subdirs $subdir"
4573 # $gcc_subdir is where the gcc integration files are to be found
4574 # for a language, both for internal compiler purposes (compiler
4575 # sources implementing front-end to GCC tree converters), and for
4576 # build infrastructure purposes (Make-lang.in, etc.)
4578 # This will be <subdir> (relative to $srcdir) if a line like
4579 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4580 # is found in <langdir>/config-lang.in, and will remain <langdir>
4583 # Except for the language alias (fetched above), the regular
4584 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4585 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4586 # only this and the language alias.
4588 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4589 if [ "$gcc_subdir" = "" ]; then
4590 gcc_subdir="$subdir"
4593 case ",$enable_languages," in
4595 all_selected_languages="$all_selected_languages $lang_alias"
4596 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4597 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4609 . ${srcdir}/$gcc_subdir/config-lang.in
4610 if test "x$language" = x
4612 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4617 case ",$enable_languages," in
4620 for i in $subdir_requires; do
4621 test -f "${srcdir}/$i/config-lang.in" && continue
4629 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4630 if test -f $srcdir/$gcc_subdir/lang.opt; then
4631 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4632 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4634 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4635 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4637 all_languages="$all_languages $language"
4638 all_compilers="$all_compilers $compilers"
4639 all_outputs="$all_outputs $outputs"
4640 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4641 case ",$enable_languages," in
4643 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4645 AC_SUBST(enable_lto)
4651 # Pick up gtfiles for c
4653 . ${srcdir}/c-config-lang.in
4654 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4657 for language in $all_selected_languages
4659 check_languages="$check_languages check-$language"
4662 # We link each language in with a set of hooks, reached indirectly via
4663 # lang.${target}. Only do so for selected languages.
4667 target_list="all.cross start.encap rest.encap tags \
4668 install-common install-man install-info install-pdf install-html dvi \
4669 pdf html uninstall info man srcextra srcman srcinfo \
4670 mostlyclean clean distclean maintainer-clean install-plugin"
4672 for t in $target_list
4675 for lang in $all_selected_languages
4679 echo "lang.$t: $x" >> Make-hooks
4683 # Option include files
4686 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4687 option_includes="option-includes.mk"
4688 AC_SUBST_FILE(option_includes)
4696 echo "dir ." > .gdbinit
4697 echo "dir ${srcdir}" >> .gdbinit
4698 if test x$gdb_needs_out_file_path = xyes
4700 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4702 if test "x$subdirs" != x; then
4705 echo "dir ${srcdir}/$s" >> .gdbinit
4708 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4710 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4711 AC_SUBST(gcc_tooldir)
4714 # Find a directory in which to install a shared libgcc.
4716 AC_ARG_ENABLE(version-specific-runtime-libs,
4717 [ --enable-version-specific-runtime-libs
4718 specify that runtime libraries should be
4719 installed in a compiler-specific directory])
4721 AC_ARG_WITH(slibdir,
4722 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4723 slibdir="$with_slibdir",
4724 if test "${enable_version_specific_runtime_libs+set}" = set; then
4725 slibdir='$(libsubdir)'
4726 elif test "$host" != "$target"; then
4727 slibdir='$(build_tooldir)/lib'
4733 # Substitute configuration variables
4736 AC_SUBST(all_compilers)
4737 AC_SUBST(all_gtfiles)
4738 AC_SUBST(all_lang_makefrags)
4739 AC_SUBST(all_languages)
4740 AC_SUBST(all_selected_languages)
4741 AC_SUBST(build_exeext)
4742 AC_SUBST(build_install_headers_dir)
4743 AC_SUBST(build_xm_file_list)
4744 AC_SUBST(build_xm_include_list)
4745 AC_SUBST(build_xm_defines)
4746 AC_SUBST(build_file_translate)
4747 AC_SUBST(check_languages)
4748 AC_SUBST(cpp_install_dir)
4749 AC_SUBST(xmake_file)
4750 AC_SUBST(tmake_file)
4751 AC_SUBST(TM_ENDIAN_CONFIG)
4752 AC_SUBST(TM_MULTILIB_CONFIG)
4753 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4754 AC_SUBST(extra_gcc_objs)
4755 AC_SUBST(user_headers_inc_next_pre)
4756 AC_SUBST(user_headers_inc_next_post)
4757 AC_SUBST(extra_headers_list)
4758 AC_SUBST(extra_objs)
4759 AC_SUBST(extra_parts)
4760 AC_SUBST(extra_passes)
4761 AC_SUBST(extra_programs)
4762 AC_SUBST(float_h_file)
4763 AC_SUBST(gcc_config_arguments)
4764 AC_SUBST(gcc_gxx_include_dir)
4765 AC_SUBST(host_exeext)
4766 AC_SUBST(host_xm_file_list)
4767 AC_SUBST(host_xm_include_list)
4768 AC_SUBST(host_xm_defines)
4769 AC_SUBST(out_host_hook_obj)
4771 AC_SUBST(lang_opt_files)
4772 AC_SUBST(lang_specs_files)
4773 AC_SUBST(lang_tree_files)
4774 AC_SUBST(local_prefix)
4776 AC_SUBST(objc_boehm_gc)
4778 AC_SUBST(out_object_file)
4779 AC_SUBST(thread_file)
4780 AC_SUBST(tm_file_list)
4781 AC_SUBST(tm_include_list)
4782 AC_SUBST(tm_defines)
4783 AC_SUBST(libgcc_tm_file_list)
4784 AC_SUBST(libgcc_tm_include_list)
4785 AC_SUBST(tm_p_file_list)
4786 AC_SUBST(tm_p_include_list)
4787 AC_SUBST(xm_file_list)
4788 AC_SUBST(xm_include_list)
4789 AC_SUBST(xm_defines)
4790 AC_SUBST(use_gcc_stdint)
4791 AC_SUBST(c_target_objs)
4792 AC_SUBST(cxx_target_objs)
4793 AC_SUBST(fortran_target_objs)
4794 AC_SUBST(target_cpu_default)
4796 AC_SUBST_FILE(language_hooks)
4799 if test x${build} = x${host} ; then
4800 if test x${host} = x${target} ; then
4801 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4803 echo "Links are now set up to build a cross-compiler" 1>&2
4804 echo " from ${host} to ${target}." 1>&2
4807 if test x${host} = x${target} ; then
4808 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4809 echo " for ${target}." 1>&2
4811 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4812 echo " from ${host} to ${target}." 1>&2
4816 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4817 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4819 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4820 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4822 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4823 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4824 if test "x${CLOOGLIBS}" != "x" ; then
4825 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4828 # Check for plugin support
4829 AC_ARG_ENABLE(plugin,
4830 [ --enable-plugin enable plugin support],
4831 enable_plugin=$enableval,
4832 enable_plugin=yes; default_plugin=yes)
4838 if test x$build = x$host; then
4839 export_sym_check="nm${exeext} -g"
4840 elif test x$host = x$target; then
4841 export_sym_check="$gcc_cv_nm -g"
4847 if test x$build = x$host; then
4848 export_sym_check="objdump${exeext} -T"
4849 elif test x$host = x$target; then
4850 export_sym_check="$gcc_cv_objdump -T"
4857 if test x"$enable_plugin" = x"yes"; then
4859 AC_MSG_CHECKING([for exported symbols])
4860 if test "x$export_sym_check" != x; then
4861 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4862 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4863 if $export_sym_check conftest | grep foobar > /dev/null; then
4864 : # No need to use a flag
4865 AC_MSG_RESULT([yes])
4867 AC_MSG_RESULT([yes])
4868 AC_MSG_CHECKING([for -rdynamic])
4869 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4870 if $export_sym_check conftest | grep foobar > /dev/null; then
4872 pluginlibs="-rdynamic"
4877 AC_MSG_RESULT([$plugin_rdynamic])
4880 AC_MSG_RESULT([unable to check])
4885 AC_SEARCH_LIBS([dlopen], [dl])
4886 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4887 pluginlibs="$pluginlibs -ldl"
4891 # Check that we can build shared objects with -fPIC -shared
4892 saved_LDFLAGS="$LDFLAGS"
4893 saved_CFLAGS="$CFLAGS"
4896 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4897 CFLAGS="$CFLAGS -fPIC"
4898 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4901 CFLAGS="$CFLAGS -fPIC"
4902 LDFLAGS="$LDFLAGS -fPIC -shared"
4905 AC_MSG_CHECKING([for -fPIC -shared])
4907 [extern int X;],[return X == 0;],
4908 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4909 [AC_MSG_RESULT([no]); have_pic_shared=no])
4910 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4914 LDFLAGS="$saved_LDFLAGS"
4915 CFLAGS="$saved_CFLAGS"
4917 # If plugin support had been requested but not available, fail.
4918 if test x"$enable_plugin" = x"no" ; then
4919 if test x"$default_plugin" != x"yes"; then
4921 Building GCC with plugin support requires a host that supports
4922 -fPIC, -shared, -ldl and -rdynamic.])
4927 AC_SUBST(pluginlibs)
4928 AC_SUBST(enable_plugin)
4929 if test x"$enable_plugin" = x"yes"; then
4930 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4934 AC_ARG_ENABLE(libquadmath-support,
4935 [AS_HELP_STRING([--disable-libquadmath-support],
4936 [disable libquadmath support for Fortran])],
4937 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
4938 ENABLE_LIBQUADMATH_SUPPORT=yes)
4939 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
4940 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
4941 [Define to 1 to enable libquadmath support])
4945 # Configure the subdirectories
4946 # AC_CONFIG_SUBDIRS($subdirs)
4948 # Create the Makefile
4949 # and configure language subdirectories
4950 AC_CONFIG_FILES($all_outputs)
4952 AC_CONFIG_COMMANDS([default],
4954 case ${CONFIG_HEADERS} in
4955 *auto-host.h:config.in*)
4958 # Make sure all the subdirs exist.
4959 for d in $subdirs doc build c-family
4961 test -d $d || mkdir $d
4964 [subdirs='$subdirs'])