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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 AC_ARG_WITH(cpp_install_dir,
149 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
150 [install the user visible C preprocessor in DIR
151 (relative to PREFIX) as well as PREFIX/bin])],
152 [if test x$withval = xyes; then
153 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
154 elif test x$withval != xno; then
155 cpp_install_dir=$withval
158 # We would like to our source tree to be readonly. However when releases or
159 # pre-releases are generated, the flex/bison generated files as well as the
160 # various formats of manuals need to be included along with the rest of the
161 # sources. Therefore we have --enable-generated-files-in-srcdir to do
164 AC_MSG_CHECKING([whether to place generated files in the source directory])
165 dnl generated-files-in-srcdir is disabled by default
166 AC_ARG_ENABLE(generated-files-in-srcdir,
167 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
168 [put copies of generated files in source dir
169 intended for creating source tarballs for users
170 without texinfo bison or flex])],
171 generated_files_in_srcdir=$enableval,
172 generated_files_in_srcdir=no)
174 AC_MSG_RESULT($generated_files_in_srcdir)
176 if test "$generated_files_in_srcdir" = "yes"; then
183 # -------------------
184 # Find default linker
185 # -------------------
189 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
190 gnu_ld_flag="$with_gnu_ld",
193 # With pre-defined ld
195 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
196 DEFAULT_LINKER="$with_ld")
197 if test x"${DEFAULT_LINKER+set}" = x"set"; then
198 if test ! -x "$DEFAULT_LINKER"; then
199 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
200 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
203 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
204 [Define to enable the use of a default linker.])
207 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
208 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
210 AC_MSG_CHECKING([whether a default linker was specified])
211 if test x"${DEFAULT_LINKER+set}" = x"set"; then
212 if test x"$gnu_ld_flag" = x"no"; then
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
221 # With demangler in GNU ld
222 AC_ARG_WITH(demangler-in-ld,
223 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
224 demangler_in_ld="$with_demangler_in_ld",
227 # ----------------------
228 # Find default assembler
229 # ----------------------
233 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
234 gas_flag="$with_gnu_as",
238 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
239 DEFAULT_ASSEMBLER="$with_as")
240 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
241 if test ! -x "$DEFAULT_ASSEMBLER"; then
242 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
243 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
246 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
247 [Define to enable the use of a default assembler.])
250 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
251 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
253 AC_MSG_CHECKING([whether a default assembler was specified])
254 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
255 if test x"$gas_flag" = x"no"; then
256 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
268 # If a non-executable a.out is present (e.g. created by GNU as above even if
269 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
270 # file, even when creating an executable, so an execution test fails.
271 # Remove possible default executable files to avoid this.
273 # FIXME: This really belongs into AC_PROG_CC and can be removed once
274 # Autoconf includes it.
275 rm -f a.out a.exe b.out
277 # Find the native compiler
281 ACX_PROG_GNAT([-I"$srcdir"/ada])
283 # autoconf is lame and doesn't give us any substitution variable for this.
284 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
285 NO_MINUS_C_MINUS_O=yes
287 OUTPUT_OPTION='-o $@'
289 AC_SUBST(NO_MINUS_C_MINUS_O)
290 AC_SUBST(OUTPUT_OPTION)
292 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
293 # optimizations to be activated explicitly by the toplevel.
296 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
300 # -------------------------
301 # Check C compiler features
302 # -------------------------
304 AC_USE_SYSTEM_EXTENSIONS
310 # sizeof(char) is 1 by definition.
311 AC_CHECK_SIZEOF(void *)
312 AC_CHECK_SIZEOF(short)
314 AC_CHECK_SIZEOF(long)
315 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
316 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
319 # ---------------------
320 # Warnings and checking
321 # ---------------------
323 # Check $CC warning features (if it's GCC).
324 # We want to use -pedantic, but we don't want warnings about
328 # So, we only use -pedantic if we can disable those warnings.
330 ACX_PROG_CC_WARNING_OPTS(
331 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
339 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
340 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
341 [-Wno-overlength-strings])), [strict_warn])
342 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
344 # The above macros do nothing if the compiler is not GCC. However, the
345 # Makefile has more goo to add other flags, so these variables are used
346 # to enable warnings only for GCC.
349 if test "x$GCC" = "xyes"; then
350 warn_cflags='$(GCC_WARN_CFLAGS)'
351 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
353 AC_SUBST(warn_cflags)
354 AC_SUBST(warn_cxxflags)
356 # Enable expensive internal checks
358 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
362 AC_ARG_ENABLE(checking,
363 [AS_HELP_STRING([[--enable-checking[=LIST]]],
364 [enable expensive run-time checks. With LIST,
365 enable only specific categories of checks.
366 Categories are: yes,no,all,none,release.
367 Flags are: assert,df,fold,gc,gcac,gimple,misc,
368 rtlflag,rtl,runtime,tree,valgrind,types])],
369 [ac_checking_flags="${enableval}"],[
370 # Determine the default checks.
371 if test x$is_release = x ; then
372 ac_checking_flags=yes
374 ac_checking_flags=release
376 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
377 for check in release $ac_checking_flags
380 # these set all the flags to specific states
381 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
382 ac_fold_checking= ; ac_gc_checking=1 ;
383 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
384 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
385 ac_tree_checking=1 ; ac_valgrind_checking= ;
386 ac_types_checking=1 ;;
387 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
388 ac_fold_checking= ; ac_gc_checking= ;
389 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
390 ac_rtlflag_checking= ; ac_runtime_checking= ;
391 ac_tree_checking= ; ac_valgrind_checking= ;
392 ac_types_checking= ;;
393 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
394 ac_fold_checking=1 ; ac_gc_checking=1 ;
395 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 # these enable particular checks
406 assert) ac_assert_checking=1 ;;
407 df) ac_df_checking=1 ;;
408 fold) ac_fold_checking=1 ;;
409 gc) ac_gc_checking=1 ;;
410 gcac) ac_gc_always_collect=1 ;;
411 gimple) ac_gimple_checking=1 ;;
412 misc) ac_checking=1 ;;
413 rtl) ac_rtl_checking=1 ;;
414 rtlflag) ac_rtlflag_checking=1 ;;
415 runtime) ac_runtime_checking=1 ;;
416 tree) ac_tree_checking=1 ;;
417 types) ac_types_checking=1 ;;
418 valgrind) ac_valgrind_checking=1 ;;
419 *) AC_MSG_ERROR(unknown check category $check) ;;
425 if test x$ac_checking != x ; then
426 AC_DEFINE(ENABLE_CHECKING, 1,
427 [Define if you want more run-time sanity checks. This one gets a grab
428 bag of miscellaneous but relatively cheap checks.])
429 nocommon_flag=-fno-common
431 AC_SUBST(nocommon_flag)
432 if test x$ac_df_checking != x ; then
433 AC_DEFINE(ENABLE_DF_CHECKING, 1,
434 [Define if you want more run-time sanity checks for dataflow.])
436 if test x$ac_assert_checking != x ; then
437 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
438 [Define if you want assertions enabled. This is a cheap check.])
440 if test x$ac_gimple_checking != x ; then
441 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
442 [Define if you want operations on GIMPLE (the basic data structure of
443 the high-level optimizers) to be checked for dynamic type safety at
444 runtime. This is moderately expensive.])
446 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
447 if test x$ac_runtime_checking != x ; then
448 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
449 [Define if you want runtime assertions enabled. This is a cheap check.])
451 if test x$ac_tree_checking != x ; then
452 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
453 [Define if you want all operations on trees (the basic data
454 structure of the front ends) to be checked for dynamic type safety
455 at runtime. This is moderately expensive. The tree browser debugging
456 routines will also be enabled by this option.
458 TREEBROWSER=tree-browser.o
460 if test x$ac_types_checking != x ; then
461 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
462 [Define if you want all gimple types to be verified after gimplifiation.
466 AC_SUBST(TREEBROWSER)
467 if test x$ac_rtl_checking != x ; then
468 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
469 [Define if you want all operations on RTL (the basic data structure
470 of the optimizer and back end) to be checked for dynamic type safety
471 at runtime. This is quite expensive.])
473 if test x$ac_rtlflag_checking != x ; then
474 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
475 [Define if you want RTL flag accesses to be checked against the RTL
476 codes that are supported for each access macro. This is relatively
479 if test x$ac_gc_checking != x ; then
480 AC_DEFINE(ENABLE_GC_CHECKING, 1,
481 [Define if you want the garbage collector to do object poisoning and
482 other memory allocation checks. This is quite expensive.])
484 if test x$ac_gc_always_collect != x ; then
485 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
486 [Define if you want the garbage collector to operate in maximally
487 paranoid mode, validating the entire heap and collecting garbage at
488 every opportunity. This is extremely expensive.])
490 if test x$ac_fold_checking != x ; then
491 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
492 [Define if you want fold checked that it never destructs its argument.
493 This is quite expensive.])
495 valgrind_path_defines=
498 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
499 dnl # an if statement. This was the source of very frustrating bugs
500 dnl # in converting to autoconf 2.5x!
501 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
503 if test x$ac_valgrind_checking != x ; then
504 # It is certainly possible that there's valgrind but no valgrind.h.
505 # GCC relies on making annotations so we must have both.
506 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
507 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
508 [[#include <valgrind/memcheck.h>
509 #ifndef VALGRIND_DISCARD
510 #error VALGRIND_DISCARD not defined
512 [gcc_cv_header_valgrind_memcheck_h=yes],
513 [gcc_cv_header_valgrind_memcheck_h=no])
514 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
515 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
516 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
517 [[#include <memcheck.h>
518 #ifndef VALGRIND_DISCARD
519 #error VALGRIND_DISCARD not defined
521 [gcc_cv_header_memcheck_h=yes],
522 [gcc_cv_header_memcheck_h=no])
523 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
524 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
525 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
526 if test "x$valgrind_path" = "x" \
527 || (test $have_valgrind_h = no \
528 && test $gcc_cv_header_memcheck_h = no \
529 && test $gcc_cv_header_valgrind_memcheck_h = no); then
530 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
532 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
533 valgrind_command="$valgrind_path -q"
534 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
535 [Define if you want to run subprograms and generated programs
536 through valgrind (a memory checker). This is extremely expensive.])
537 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
538 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
539 [Define if valgrind's valgrind/memcheck.h header is installed.])
541 if test $gcc_cv_header_memcheck_h = yes; then
542 AC_DEFINE(HAVE_MEMCHECK_H, 1,
543 [Define if valgrind's memcheck.h header is installed.])
546 AC_SUBST(valgrind_path_defines)
547 AC_SUBST(valgrind_command)
549 # Enable code coverage collection
550 AC_ARG_ENABLE(coverage,
551 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
552 [enable compiler's code coverage collection.
553 Use to measure compiler performance and locate
554 unused parts of the compiler. With LEVEL, specify
555 optimization. Values are opt, noopt,
557 [case "${enableval}" in
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
562 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
565 # a.k.a. --disable-coverage
569 AC_MSG_ERROR(unknown coverage setting $enableval)
573 AC_SUBST(coverage_flags)
575 AC_ARG_ENABLE(gather-detailed-mem-stats,
576 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
577 [enable detailed memory allocation stats gathering])], [],
578 [enable_gather_detailed_mem_stats=no])
579 if test x$enable_gather_detailed_mem_stats = xyes ; then
580 AC_DEFINE(GATHER_STATISTICS, 1,
581 [Define to enable detailed memory allocation stats gathering.])
584 # -------------------------------
585 # Miscenalleous configure options
586 # -------------------------------
588 # See if we are building gcc with C++.
589 AC_ARG_ENABLE(build-with-cxx,
590 [AS_HELP_STRING([--enable-build-with-cxx],
591 [build with C++ compiler instead of C compiler])],
592 ENABLE_BUILD_WITH_CXX=$enableval,
593 ENABLE_BUILD_WITH_CXX=no)
594 AC_SUBST(ENABLE_BUILD_WITH_CXX)
595 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
596 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
597 [Define if building with C++.])
602 [AS_HELP_STRING([--with-stabs],
603 [arrange to use stabs instead of host debug format])],
607 # Determine whether or not multilibs are enabled.
608 AC_ARG_ENABLE(multilib,
609 [AS_HELP_STRING([--enable-multilib],
610 [enable library support for multiple ABIs])],
611 [], [enable_multilib=yes])
612 AC_SUBST(enable_multilib)
614 # Enable __cxa_atexit for C++.
615 AC_ARG_ENABLE(__cxa_atexit,
616 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
619 # Enable C extension for decimal float if target supports it.
620 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
622 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
623 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
624 [Define to 1 to enable decimal float extension to C.])
626 # Use default_decimal_float for dependency.
627 enable_decimal_float=$default_decimal_float
629 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
630 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
631 [Define to 1 to specify that we are using the BID decimal floating
632 point format instead of DPD])
634 # Enable C extension for fixed-point arithmetic.
635 AC_ARG_ENABLE(fixed-point,
636 [AS_HELP_STRING([--enable-fixed-point],
637 [enable fixed-point arithmetic extension to C])],
644 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
645 enable_fixed_point=no
648 enable_fixed_point=yes
653 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
654 enable_fixed_point=no
658 AC_SUBST(enable_fixed_point)
660 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
661 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
662 [Define to 1 to enable fixed-point arithmetic extension to C.])
665 # Pass with no value to take the default
666 # Pass with a value to specify a thread package
667 AC_ARG_ENABLE(threads,
668 [AS_HELP_STRING([[--enable-threads[=LIB]]],
669 [enable thread usage for target GCC,
670 using LIB thread package])],,
674 [AS_HELP_STRING([--enable-tls],
675 [enable or disable generation of tls code
676 overriding the assembler check for tls support])],
680 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
681 Valid choices are 'yes' and 'no'.]) ;;
685 AC_ARG_ENABLE(objc-gc,
686 [AS_HELP_STRING([--enable-objc-gc],
687 [enable the use of Boehm's garbage collector with
688 the GNU Objective-C runtime])],
689 if test x$enable_objc_gc = xno; then
697 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
698 dwarf2="$with_dwarf2",
701 AC_ARG_ENABLE(shared,
702 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
704 case $enable_shared in
708 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
709 for pkg in $enableval; do
710 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
717 ], [enable_shared=yes])
718 AC_SUBST(enable_shared)
720 AC_ARG_WITH(build-sysroot,
721 [AS_HELP_STRING([--with-build-sysroot=sysroot],
722 [use sysroot as the system root during the build])])
725 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
726 [search for usr/lib, usr/include, et al, within DIR])],
728 case ${with_sysroot} in
729 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
730 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
733 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
734 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
736 if test "x$prefix" = xNONE; then
737 test_prefix=/usr/local
741 if test "x$exec_prefix" = xNONE; then
742 test_exec_prefix=$test_prefix
744 test_exec_prefix=$exec_prefix
746 case ${TARGET_SYSTEM_ROOT} in
747 "${test_prefix}"|"${test_prefix}/"*|\
748 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
749 '${prefix}'|'${prefix}/'*|\
750 '${exec_prefix}'|'${exec_prefix}/'*)
751 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
752 TARGET_SYSTEM_ROOT_DEFINE="$t"
757 TARGET_SYSTEM_ROOT_DEFINE=
758 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
760 AC_SUBST(TARGET_SYSTEM_ROOT)
761 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
762 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
765 [AS_HELP_STRING([--with-specs=SPECS],
766 [add SPECS to driver command-line processing])],
767 [CONFIGURE_SPECS=$withval],
770 AC_SUBST(CONFIGURE_SPECS)
772 ACX_PKGVERSION([GCC])
773 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
775 # Sanity check enable_languages in case someone does not run the toplevel
776 # configure # script.
777 AC_ARG_ENABLE(languages,
778 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
779 [case ,${enable_languages}, in
781 # go safe -- we cannot be much sure without the toplevel
783 # analysis of which target libs are present and usable
787 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
792 enable_languages=c,${enable_languages}
795 [enable_languages=c])
797 AC_ARG_WITH(multilib-list,
798 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH only)])],
800 with_multilib_list=default)
802 # -------------------------
803 # Checks for other programs
804 # -------------------------
808 # Find some useful tools
810 # We need awk to create options.c and options.h.
811 # Bail out if it's missing.
813 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
821 # By default, the Darwin ranlib will not treat common symbols as
822 # definitions when building the archive table of contents. Other
823 # ranlibs do that; pass an option to the Darwin ranlib that makes
824 # it behave similarly.
830 AC_SUBST(ranlib_flags)
834 # See if cmp has --ignore-initial.
835 gcc_AC_PROG_CMP_IGNORE_INITIAL
837 # See if we have the mktemp command.
838 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
840 # See if makeinfo has been installed and is modern enough
841 # that we can use it.
842 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
843 [GNU texinfo.* \([0-9][0-9.]*\)],
844 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
845 if test $gcc_cv_prog_makeinfo_modern = no; then
847 *** Makeinfo is missing or too old.
848 *** Info documentation will not be built.])
855 # Is pod2man recent enough to regenerate manpages?
856 AC_MSG_CHECKING([for recent Pod::Man])
857 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
859 GENERATED_MANPAGES=generated-manpages
864 AC_SUBST(GENERATED_MANPAGES)
866 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
869 dnl Don't use AC_PROG_LEX; we insist on flex.
870 dnl LEXLIB is not useful in gcc.
871 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
874 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
876 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
877 # check for build == host before using them.
880 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
881 && test -d ../binutils ; then
882 NM='${objdir}/../binutils/nm-new'
884 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
888 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
889 && test -d ../binutils ; then
890 AR='${objdir}/../binutils/ar'
892 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
896 # --------------------
897 # Checks for C headers
898 # --------------------
900 # Need to reject headers which give warnings, so that the -Werror bootstrap
901 # works later. *sigh* This needs to come before all header checks.
908 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
909 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
910 sys/resource.h sys/param.h sys/times.h sys/stat.h \
911 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
913 # Check for thread headers.
914 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
915 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
917 # These tests can't be done till we know if we have limits.h.
921 # ----------------------
922 # Checks for C++ headers
923 # ----------------------
925 dnl Autoconf will give an error in the configure script if there is no
926 dnl C++ preprocessor. Hack to prevent that.
927 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
929 m4_popdef([AC_MSG_ERROR])[]dnl
933 AC_CHECK_HEADERS(unordered_map)
934 AC_CHECK_HEADERS(tr1/unordered_map)
935 AC_CHECK_HEADERS(ext/hash_map)
944 # These libraries may be used by collect2.
945 # We may need a special search path to get them linked.
946 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
948 for libs in '' -lld -lmld \
949 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
950 '-L/usr/lib/cmplrs/cc3.11 -lmld'
953 AC_TRY_LINK_FUNC(ldopen,
954 [gcc_cv_collect2_libs="$libs"; break])
957 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
958 case $gcc_cv_collect2_libs in
960 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
962 AC_SUBST(COLLECT2_LIBS)
964 # When building Ada code on Alpha, we need exc_resume which is usually in
965 # -lexc. So test for it.
968 AC_SEARCH_LIBS(exc_resume, exc)
971 AC_SUBST(GNAT_LIBEXC)
973 # Some systems put ldexp and frexp in libm instead of libc; assume
974 # they're both in the same place. jcf-dump needs them.
977 AC_SEARCH_LIBS(ldexp, m)
982 # Use <inttypes.h> only if it exists,
983 # doesn't clash with <sys/types.h>, and declares intmax_t.
984 AC_MSG_CHECKING(for inttypes.h)
985 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
986 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
987 [[#include <sys/types.h>
988 #include <inttypes.h>]],
989 [[intmax_t i = -1;]])],
990 [gcc_cv_header_inttypes_h=yes],
991 [gcc_cv_header_inttypes_h=no])])
992 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
993 if test $gcc_cv_header_inttypes_h = yes; then
994 AC_DEFINE(HAVE_INTTYPES_H, 1,
995 [Define if you have a working <inttypes.h> header file.])
998 dnl Disabled until we have a complete test for buggy enum bitfields.
999 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1001 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1002 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1003 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1004 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1005 putchar_unlocked putc_unlocked)
1006 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1007 sysconf strsignal getrusage nl_langinfo \
1008 gettimeofday mbstowcs wcswidth mmap setlocale \
1011 if test x$ac_cv_func_mbstowcs = xyes; then
1012 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1013 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1019 [gcc_cv_func_mbstowcs_works=yes],
1020 [gcc_cv_func_mbstowcs_works=no],
1021 [gcc_cv_func_mbstowcs_works=yes])])
1022 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1023 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1024 [Define this macro if mbstowcs does not crash when its
1025 first argument is NULL.])
1029 AC_CHECK_TYPE(ssize_t, int)
1030 AC_CHECK_TYPE(caddr_t, char *)
1032 gcc_AC_FUNC_MMAP_BLACKLIST
1036 # Under VMS, vfork works very differently than on Unix. The standard test
1037 # won't work, and it isn't easily adaptable. It makes more sense to
1039 ac_cv_func_vfork_works=yes
1045 # Until we have in-tree GNU iconv:
1047 AC_SUBST(LIBICONV_DEP)
1053 # We will need to find libiberty.h and ansidecl.h
1054 saved_CFLAGS="$CFLAGS"
1055 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1056 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1057 strsignal strstr strverscmp \
1058 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1059 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1060 #include "ansidecl.h"
1061 #include "system.h"])
1063 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1064 #include "ansidecl.h"
1066 #ifdef HAVE_SYS_RESOURCE_H
1067 #include <sys/resource.h>
1071 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1072 #include "ansidecl.h"
1074 #ifdef HAVE_SYS_RESOURCE_H
1075 #include <sys/resource.h>
1077 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1078 [Define to `long' if <sys/resource.h> doesn't define.])])
1080 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1081 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1082 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1083 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1084 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1085 #include "ansidecl.h"
1094 gcc_AC_CHECK_DECLS(times, , ,[
1095 #include "ansidecl.h"
1097 #ifdef HAVE_SYS_TIMES_H
1098 #include <sys/times.h>
1102 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1103 #include "ansidecl.h"
1108 # More time-related stuff.
1109 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1110 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_TIMES_H
1114 #include <sys/times.h>
1116 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1117 if test $ac_cv_struct_tms = yes; then
1118 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1119 [Define if <sys/times.h> defines struct tms.])
1122 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1123 # revisit after autoconf 2.50.
1124 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1125 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1126 #include "ansidecl.h"
1128 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1129 if test $gcc_cv_type_clock_t = yes; then
1130 AC_DEFINE(HAVE_CLOCK_T, 1,
1131 [Define if <time.h> defines clock_t.])
1134 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1135 CFLAGS="$saved_CFLAGS"
1137 gcc_AC_INITFINI_ARRAY
1139 # mkdir takes a single argument on some systems.
1140 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1148 # With Setjmp/Longjmp based exception handling.
1149 AC_ARG_ENABLE(sjlj-exceptions,
1150 [AS_HELP_STRING([--enable-sjlj-exceptions],
1151 [arrange to use setjmp/longjmp exception handling])],
1154 if test $enableval != yes; then
1155 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1160 force_sjlj_exceptions=yes],
1163 force_sjlj_exceptions=yes
1167 force_sjlj_exceptions=no
1170 if test $force_sjlj_exceptions = yes; then
1171 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1172 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1173 [Define 0/1 to force the choice for exception handling model.])
1176 # For platforms with the unwind ABI which includes an unwind library,
1177 # libunwind, we can choose to use the system libunwind.
1178 # config.gcc also contains tests of with_system_libunwind.
1179 GCC_CHECK_UNWIND_GETIPINFO
1181 # --------------------------------------------------------
1182 # Build, host, and target specific configuration fragments
1183 # --------------------------------------------------------
1185 # Collect build-machine-specific information.
1186 . ${srcdir}/config.build
1188 # Collect host-machine-specific information.
1189 . ${srcdir}/config.host
1193 # Collect target-machine-specific information.
1194 . ${srcdir}/config.gcc
1196 extra_objs="${host_extra_objs} ${extra_objs}"
1197 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1199 # Default the target-machine variables that were not explicitly set.
1200 if test x"$tm_file" = x
1201 then tm_file=$cpu_type/$cpu_type.h; fi
1203 if test x"$extra_headers" = x
1204 then extra_headers=; fi
1206 if test x$md_file = x
1207 then md_file=$cpu_type/$cpu_type.md; fi
1209 if test x$out_file = x
1210 then out_file=$cpu_type/$cpu_type.c; fi
1212 if test x"$tmake_file" = x
1213 then tmake_file=$cpu_type/t-$cpu_type
1216 if test x"$dwarf2" = xyes
1217 then tm_file="$tm_file tm-dwarf2.h"
1220 # Say what files are being used for the output code and MD file.
1221 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1222 echo "Using \`$srcdir/config/$md_file' as machine description file."
1224 # If any of the xm_file variables contain nonexistent files, warn
1225 # about them and drop them.
1228 for x in $build_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 $host_xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for x in $xm_file; do
1247 if test -f $srcdir/config/$x
1249 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1255 for f in $tm_file; do
1258 if test $count = ax; then
1259 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1261 echo "Using the following target machine macro files:"
1262 for f in $tm_file; do
1263 echo " $srcdir/config/$f"
1267 if test x$need_64bit_hwint = xyes; then
1268 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1269 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1272 if test x$use_long_long_for_widest_fast_int = xyes; then
1273 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1274 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1275 efficiently supported by the host hardware.])
1279 for f in $host_xm_file; do
1282 if test $count = a; then
1284 elif test $count = ax; then
1285 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1287 echo "Using the following host machine macro files:"
1288 for f in $host_xm_file; do
1289 echo " $srcdir/config/$f"
1292 echo "Using ${out_host_hook_obj} for host machine hooks."
1294 if test "$host_xm_file" != "$build_xm_file"; then
1296 for f in $build_xm_file; do
1299 if test $count = a; then
1301 elif test $count = ax; then
1302 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1304 echo "Using the following build machine macro files:"
1305 for f in $build_xm_file; do
1306 echo " $srcdir/config/$f"
1313 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1314 gcc_cv_mcontext_underscores,
1316 #include <sys/cdefs.h>
1317 #include <sys/signal.h>
1318 #include <ucontext.h>
1319 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1321 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1322 if test $gcc_cv_mcontext_underscores = yes; then
1323 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1324 [mcontext_t fields start with __])
1333 # Check if a valid thread package
1334 case ${enable_threads} in
1337 target_thread_file='single'
1341 target_thread_file='single'
1343 aix | dce | lynx | mipssde | nks | posix | posix95 | rtems | \
1344 single | tpf | vxworks | win32)
1345 target_thread_file=${enable_threads}
1348 echo "${enable_threads} is an unknown thread package" 1>&2
1353 if test x${thread_file} = x; then
1354 # No thread file set by target-specific clauses in config.gcc,
1355 # so use file chosen by default logic above
1356 thread_file=${target_thread_file}
1359 # Make gthr-default.h if we have a thread file.
1361 if test $thread_file != single; then
1362 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1363 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1364 rm -f gthr-default.h-t
1366 mv -f gthr-default.h-t gthr-default.h
1368 gthread_flags=-DHAVE_GTHR_DEFAULT
1370 AC_SUBST(gthread_flags)
1377 if test x$enable___cxa_atexit = xyes || \
1378 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1379 if test x$host = x$target; then
1381 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1382 # keyed to flag_use_cxa_atexit
1387 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1388 [echo "__cxa_atexit can't be enabled on this target"])
1392 # We can't check for __cxa_atexit when building a cross, so assume
1396 if test x$use_cxa_atexit = xyes; then
1397 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1398 [Define if you want to use __cxa_atexit, rather than atexit, to
1399 register C++ destructors for local statics and global objects.
1400 This is essential for fully standards-compliant handling of
1401 destructors, but requires __cxa_atexit in libc.])
1405 # Look for a file containing extra machine modes.
1406 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1407 extra_modes_file='$(srcdir)'/config/${extra_modes}
1408 AC_SUBST(extra_modes_file)
1409 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1410 [Define to the name of a file containing a list of extra machine modes
1411 for this architecture.])
1414 # Convert extra_options into a form suitable for Makefile use.
1417 for f in $extra_options; do
1418 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1419 all_opt_files="$all_opt_files $srcdir/config/$f"
1421 AC_SUBST(extra_opt_files)
1423 # auto-host.h is the file containing items generated by autoconf and is
1424 # the first file included by config.h.
1425 # If host=build, it is correct to have bconfig include auto-host.h
1426 # as well. If host!=build, we are in error and need to do more
1427 # work to find out the build config parameters.
1428 if test x$host = x$build
1430 build_auto=auto-host.h
1432 # We create a subdir, then run autoconf in the subdir.
1433 # To prevent recursion we set host and build for the new
1434 # invocation of configure to the build for this invocation
1441 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1442 *) realsrcdir=../${srcdir};;
1444 saved_CFLAGS="${CFLAGS}"
1445 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1446 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1447 ${realsrcdir}/configure \
1448 --enable-languages=${enable_languages-all} \
1449 --target=$target_alias --host=$build_alias --build=$build_alias
1450 CFLAGS="${saved_CFLAGS}"
1452 # We just finished tests for the build machine, so rename
1453 # the file auto-build.h in the gcc directory.
1454 mv auto-host.h ../auto-build.h
1457 build_auto=auto-build.h
1459 AC_SUBST(build_subdir)
1461 tm_file="${tm_file} defaults.h"
1462 tm_p_file="${tm_p_file} tm-preds.h"
1463 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1464 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1465 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1466 # put this back in temporarily.
1467 xm_file="auto-host.h ansidecl.h ${xm_file}"
1474 # Compile in configure arguments.
1475 if test -f configargs.h ; then
1476 # Being re-configured.
1477 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1478 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1480 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1483 # Double all backslashes and backslash all quotes to turn
1484 # gcc_config_arguments into a C string.
1485 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1486 $gcc_config_arguments
1488 gcc_config_arguments_str=`cat conftest.out`
1491 cat > configargs.h <<EOF
1492 /* Generated automatically. */
1493 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1494 static const char thread_model[] = "$thread_file";
1496 static const struct {
1497 const char *name, *value;
1498 } configure_default_options[] = $configure_default_options;
1503 gcc_BASEVER=`cat $srcdir/BASE-VER`
1504 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1505 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1506 if test -f $srcdir/REVISION ; then
1507 gcc_REVISION=`cat $srcdir/REVISION`
1511 cat > plugin-version.h <<EOF
1512 #include "configargs.h"
1514 static char basever[] = "$gcc_BASEVER";
1515 static char datestamp[] = "$gcc_DATESTAMP";
1516 static char devphase[] = "$gcc_DEVPHASE";
1517 static char revision[] = "$gcc_REVISION";
1519 /* FIXME plugins: We should make the version information more precise.
1520 One way to do is to add a checksum. */
1522 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1524 configuration_arguments};
1528 # Internationalization
1529 ZW_GNU_GETTEXT_SISTER_DIR
1531 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1532 # -liconv on the link line twice.
1533 case "$LIBINTL" in *$LIBICONV*)
1537 AC_ARG_ENABLE(secureplt,
1538 [AS_HELP_STRING([--enable-secureplt],
1539 [enable -msecure-plt by default for PowerPC])],
1542 AC_ARG_ENABLE(leading-mingw64-underscores,
1543 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1544 [enable leading underscores on 64 bit mingw targets]),
1546 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1547 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1548 [Define if we should use leading underscore on 64 bit mingw targets])])
1551 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1554 AC_ARG_ENABLE(frame-pointer,
1555 [AS_HELP_STRING([--enable-frame-pointer],
1556 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1559 linux* | darwin[[8912]]*)
1560 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1562 enable_frame_pointer=no
1565 enable_frame_pointer=yes
1570 # Windows32 Registry support for specifying GCC installation paths.
1571 AC_ARG_ENABLE(win32-registry,
1572 [AS_HELP_STRING([--disable-win32-registry],
1573 [disable lookup of installation paths in the
1574 Registry on Windows hosts])
1575 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1576 AS_HELP_STRING([--enable-win32-registry=KEY],
1577 [use KEY instead of GCC version as the last portion
1578 of the registry key])],,)
1581 win32 | pe | cygwin* | mingw32* | uwin*)
1582 if test "x$enable_win32_registry" != xno; then
1583 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1586 if test "x$enable_win32_registry" != xno; then
1587 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1588 [Define to 1 if installation paths should be looked up in the Windows
1589 Registry. Ignored on non-Windows hosts.])
1591 if test "x$enable_win32_registry" != xyes \
1592 && test "x$enable_win32_registry" != x; then
1593 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1594 [Define to be the last component of the Windows registry key under which
1595 to look for installation paths. The full key used will be
1596 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1597 The default is the GCC version number.])
1603 # Get an absolute path to the GCC top-level source directory
1604 holddir=`${PWDCMD-pwd}`
1606 topdir=`${PWDCMD-pwd}`
1609 # Conditionalize the makefile for this host machine.
1611 for f in ${host_xmake_file}
1613 if test -f ${srcdir}/config/$f
1615 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1619 # Conditionalize the makefile for this target machine.
1621 for f in ${tmake_file}
1623 if test -f ${srcdir}/config/$f
1625 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1628 tmake_file="${tmake_file_}"
1630 out_object_file=`basename $out_file .c`.o
1632 tm_file_list="options.h"
1633 tm_include_list="options.h insn-constants.h"
1634 for f in $tm_file; do
1637 f=`echo $f | sed 's/^..//'`
1638 tm_file_list="${tm_file_list} $f"
1639 tm_include_list="${tm_include_list} $f"
1642 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1643 tm_include_list="${tm_include_list} $f"
1646 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1647 tm_include_list="${tm_include_list} config/$f"
1652 libgcc_tm_file_list=
1653 libgcc_tm_include_list=
1654 for f in $libgcc_tm_file; do
1655 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1656 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1661 for f in $tm_p_file; do
1664 tm_p_file_list="${tm_p_file_list} $f"
1665 tm_p_include_list="${tm_p_include_list} $f"
1668 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1669 tm_p_include_list="${tm_p_include_list} config/$f"
1675 for f in $xm_file; do
1678 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1679 xm_include_list="${xm_include_list} $f"
1682 xm_file_list="${xm_file_list} $f"
1683 xm_include_list="${xm_include_list} $f"
1686 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1687 xm_include_list="${xm_include_list} config/$f"
1693 host_xm_include_list=
1694 for f in $host_xm_file; do
1697 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1698 host_xm_include_list="${host_xm_include_list} $f"
1701 host_xm_file_list="${host_xm_file_list} $f"
1702 host_xm_include_list="${host_xm_include_list} $f"
1705 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1706 host_xm_include_list="${host_xm_include_list} config/$f"
1712 for f in $build_xm_file; do
1715 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1716 build_xm_include_list="${build_xm_include_list} $f"
1718 auto-build.h | auto-host.h )
1719 build_xm_file_list="${build_xm_file_list} $f"
1720 build_xm_include_list="${build_xm_include_list} $f"
1723 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1724 build_xm_include_list="${build_xm_include_list} config/$f"
1729 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1730 # cross-compiler which does not use the native headers and libraries.
1731 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1732 CROSS= AC_SUBST(CROSS)
1733 ALL=all.internal AC_SUBST(ALL)
1734 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1736 if test "x$with_build_sysroot" != x; then
1737 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1739 # This value is used, even on a native system, because
1740 # CROSS_SYSTEM_HEADER_DIR is just
1741 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1742 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1745 if test x$host != x$target
1747 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1749 SYSTEM_HEADER_DIR=$build_system_header_dir
1750 case "$host","$target" in
1751 # Darwin crosses can use the host system's libraries and headers,
1752 # because of the fat library support. Of course, it must be the
1753 # same version of Darwin on both sides. Allow the user to
1754 # just say --target=foo-darwin without a version number to mean
1755 # "the version on this system".
1756 *-*-darwin*,*-*-darwin*)
1757 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1758 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1759 if test $hostos = $targetos -o $targetos = darwin ; then
1761 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1766 i?86-*-*,x86_64-*-* \
1767 | powerpc*-*-*,powerpc64*-*-*)
1768 CROSS="$CROSS -DNATIVE_CROSS" ;;
1773 if test "x$with_headers" = x; then
1780 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1781 SYSTEM_HEADER_DIR=$build_system_header_dir
1784 # If this is a cross-compiler that does not
1785 # have its own set of headers then define
1788 # If this is using newlib, without having the headers available now,
1789 # then define inhibit_libc in LIBGCC2_CFLAGS.
1790 # This prevents libgcc2 from containing any code which requires libc
1792 : ${inhibit_libc=false}
1793 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1794 test x$with_newlib = xyes ; } &&
1795 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1798 AC_SUBST(inhibit_libc)
1800 # When building gcc with a cross-compiler, we need to adjust things so
1801 # that the generator programs are still built with the native compiler.
1802 # Also, we cannot run fixincludes.
1804 # These are the normal (build=host) settings:
1805 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1806 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1807 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1808 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1810 # And these apply if build != host, or we are generating coverage data
1811 if test x$build != x$host || test "x$coverage_flags" != x
1813 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1814 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1817 # Expand extra_headers to include complete path.
1818 # This substitutes for lots of t-* files.
1820 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1821 for file in ${extra_headers} ; do
1822 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1825 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1826 if test x"$use_gcc_tgmath" = xyes
1827 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1830 # Define collect2 in Makefile.
1831 case $host_can_use_collect2 in
1833 *) collect2='collect2$(exeext)' ;;
1835 AC_SUBST([collect2])
1837 # Add a definition of USE_COLLECT2 if system wants one.
1838 case $use_collect2 in
1839 no) use_collect2= ;;
1842 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1843 xm_defines="${xm_defines} USE_COLLECT2"
1844 case $host_can_use_collect2 in
1846 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1852 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1853 [Define to the name of the LTO plugin DSO that must be
1854 passed to the linker's -plugin=LIB option.])
1856 # ---------------------------
1857 # Assembler & linker features
1858 # ---------------------------
1860 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1861 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1862 # However when ld-new is first executed from the build tree, libtool will
1863 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1864 # to the build tree. While doing this we need to use the previous-stage
1865 # linker, or we have an infinite loop. The presence of a shell script as
1866 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1867 # the gcc/collect-ld script. So we need to know how libtool works, or
1868 # exec-tool will fail.
1870 m4_defun([_LT_CONFIG_COMMANDS], [])
1873 AC_SUBST(enable_fast_install)
1875 # Identify the assembler which will work hand-in-glove with the newly
1876 # built GCC, so that we can examine its features. This is the assembler
1877 # which will be driven by the driver program.
1879 # If build != host, and we aren't building gas in-tree, we identify a
1880 # build->target assembler and hope that it will have the same features
1881 # as the host->target assembler we'll be using.
1882 gcc_cv_gas_major_version=
1883 gcc_cv_gas_minor_version=
1884 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1886 m4_pattern_allow([AS_FOR_TARGET])dnl
1887 AS_VAR_SET_IF(gcc_cv_as,, [
1888 if test -x "$DEFAULT_ASSEMBLER"; then
1889 gcc_cv_as="$DEFAULT_ASSEMBLER"
1890 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1891 && test -f ../gas/Makefile \
1892 && test x$build = x$host; then
1893 gcc_cv_as=../gas/as-new$build_exeext
1894 elif test -x as$build_exeext; then
1895 # Build using assembler in the current directory.
1896 gcc_cv_as=./as$build_exeext
1897 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1898 gcc_cv_as="$AS_FOR_TARGET"
1900 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1903 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1904 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1905 case "$ORIGINAL_AS_FOR_TARGET" in
1906 ./as | ./as$build_exeext) ;;
1907 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1910 AC_MSG_CHECKING(what assembler to use)
1911 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1912 # Single tree build which includes gas. We want to prefer it
1913 # over whatever linker top-level may have detected, since
1914 # we'll use what we're building after installation anyway.
1915 AC_MSG_RESULT(newly built gas)
1917 _gcc_COMPUTE_GAS_VERSION
1918 in_tree_gas_is_elf=no
1919 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1920 || (grep 'obj_format = multi' ../gas/Makefile \
1921 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1923 in_tree_gas_is_elf=yes
1926 AC_MSG_RESULT($gcc_cv_as)
1930 # Identify the linker which will work hand-in-glove with the newly
1931 # built GCC, so that we can examine its features. This is the linker
1932 # which will be driven by the driver program.
1934 # If build != host, and we aren't building gas in-tree, we identify a
1935 # build->target linker and hope that it will have the same features
1936 # as the host->target linker we'll be using.
1937 gcc_cv_gld_major_version=
1938 gcc_cv_gld_minor_version=
1939 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1940 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1942 AS_VAR_SET_IF(gcc_cv_ld,, [
1943 if test -x "$DEFAULT_LINKER"; then
1944 gcc_cv_ld="$DEFAULT_LINKER"
1945 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1946 && test -f ../ld/Makefile \
1947 && test x$build = x$host; then
1948 gcc_cv_ld=../ld/ld-new$build_exeext
1949 elif test -x collect-ld$build_exeext; then
1950 # Build using linker in the current directory.
1951 gcc_cv_ld=./collect-ld$build_exeext
1952 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1953 gcc_cv_ld="$LD_FOR_TARGET"
1955 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1958 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1959 PLUGIN_LD=`basename $gcc_cv_ld`
1960 AC_ARG_WITH(plugin-ld,
1961 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1962 [if test x"$withval" != x; then
1963 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1964 PLUGIN_LD="$withval"
1966 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1967 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1969 # Check to see if we are using gold instead of ld
1970 AC_MSG_CHECKING(whether we are using gold)
1972 if test x$gcc_cv_ld != x; then
1973 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1974 | grep "GNU gold" > /dev/null; then
1978 AC_MSG_RESULT($ld_is_gold)
1980 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1981 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1982 case "$ORIGINAL_LD_FOR_TARGET" in
1983 ./collect-ld | ./collect-ld$build_exeext) ;;
1984 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1987 AC_MSG_CHECKING(what linker to use)
1988 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
1989 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
1990 # Single tree build which includes ld. We want to prefer it
1991 # over whatever linker top-level may have detected, since
1992 # we'll use what we're building after installation anyway.
1993 AC_MSG_RESULT(newly built ld)
1995 in_tree_ld_is_elf=no
1996 if (grep 'EMUL = .*elf' ../ld/Makefile \
1997 || grep 'EMUL = .*linux' ../ld/Makefile \
1998 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1999 in_tree_ld_is_elf=yes
2000 elif test "$ld_is_gold" = yes; then
2001 in_tree_ld_is_elf=yes
2003 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
2006 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2007 if test x$gcc_cv_gld_version != x; then
2011 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2012 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2015 AC_MSG_RESULT($gcc_cv_ld)
2019 # Figure out what nm we will be using.
2020 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2021 AS_VAR_SET_IF(gcc_cv_nm,, [
2022 if test -f $gcc_cv_binutils_srcdir/configure.in \
2023 && test -f ../binutils/Makefile \
2024 && test x$build = x$host; then
2025 gcc_cv_nm=../binutils/nm-new$build_exeext
2026 elif test -x nm$build_exeext; then
2027 gcc_cv_nm=./nm$build_exeext
2028 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2029 gcc_cv_nm="$NM_FOR_TARGET"
2031 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2034 AC_MSG_CHECKING(what nm to use)
2035 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2036 # Single tree build which includes binutils.
2037 AC_MSG_RESULT(newly built nm)
2040 AC_MSG_RESULT($gcc_cv_nm)
2044 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2045 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2046 case "$ORIGINAL_NM_FOR_TARGET" in
2047 ./nm | ./nm$build_exeext) ;;
2048 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2052 # Figure out what objdump we will be using.
2053 AS_VAR_SET_IF(gcc_cv_objdump,, [
2054 if test -f $gcc_cv_binutils_srcdir/configure.in \
2055 && test -f ../binutils/Makefile \
2056 && test x$build = x$host; then
2057 # Single tree build which includes binutils.
2058 gcc_cv_objdump=../binutils/objdump$build_exeext
2059 elif test -x objdump$build_exeext; then
2060 gcc_cv_objdump=./objdump$build_exeext
2061 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2062 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2064 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2067 AC_MSG_CHECKING(what objdump to use)
2068 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2069 # Single tree build which includes binutils.
2070 AC_MSG_RESULT(newly built objdump)
2071 elif test x$gcc_cv_objdump = x; then
2072 AC_MSG_RESULT(not found)
2074 AC_MSG_RESULT($gcc_cv_objdump)
2077 # Figure out what readelf we will be using.
2078 AS_VAR_SET_IF(gcc_cv_readelf,, [
2079 if test -f $gcc_cv_binutils_srcdir/configure.in \
2080 && test -f ../binutils/Makefile \
2081 && test x$build = x$host; then
2082 # Single tree build which includes binutils.
2083 gcc_cv_readelf=../binutils/readelf$build_exeext
2084 elif test -x readelf$build_exeext; then
2085 gcc_cv_readelf=./readelf$build_exeext
2087 AC_PATH_PROG(gcc_cv_readelf, readelf)
2090 AC_MSG_CHECKING(what readelf to use)
2091 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2092 # Single tree build which includes binutils.
2093 AC_MSG_RESULT(newly built readelf)
2094 elif test x$gcc_cv_readelf = x; then
2095 AC_MSG_RESULT(not found)
2097 AC_MSG_RESULT($gcc_cv_readelf)
2100 # Figure out what assembler alignment features are present.
2101 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2105 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2106 [Define if your assembler supports .balign and .p2align.])])
2108 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2111 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2112 [Define if your assembler supports specifying the maximum number
2113 of bytes to skip when using the GAS .p2align command.])])
2115 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2118 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2119 [Define if your assembler supports .literal16.])])
2121 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2123 [conftest_label1: .word 0
2125 conftest_label2: .word 0
2127 [if test x$gcc_cv_nm != x; then
2128 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2129 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2130 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2132 else gcc_cv_as_subsection_m1=yes
2134 rm -f conftest.nm1 conftest.nm2
2136 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2137 [Define if your assembler supports .subsection and .subsection -1 starts
2138 emitting at the beginning of your section.])])
2140 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2143 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2145 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2147 [ .weakref foobar, barfnot],,
2148 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2150 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2153 .NSUBSPA $CODE$,COMDAT],,
2154 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2156 # .hidden needs to be supported in both the assembler and the linker,
2157 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2158 # This is irritatingly difficult to feature test for; we have to check the
2159 # date string after the version number. If we've got an in-tree
2160 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2162 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2163 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2167 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2168 # STV_HIDDEN, so disable .hidden support if so.
2171 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2172 cat > conftest.s <<EOF
2179 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2180 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2181 grep '\.hidden default' > /dev/null; then
2184 gcc_cv_as_hidden=yes
2187 # Assume bug is present if objdump is missing.
2192 gcc_cv_as_hidden=yes
2197 # Darwin as has some visibility support, though with a different syntax.
2198 gcc_cv_as_hidden=yes
2202 # gnu_indirect_function type is an extension proposed at
2203 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2204 # selection of function implementation
2205 AC_ARG_ENABLE(gnu-indirect-function,
2206 [AS_HELP_STRING([--enable-gnu-indirect-function],
2207 [enable the use of the @gnu_indirect_function to glibc systems])],
2208 [case $enable_gnu_indirect_function in
2210 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2211 Valid choices are 'yes' and 'no'.]) ;;
2213 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2214 if test x$enable_gnu_indirect_function = xyes; then
2215 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2216 [Define if your system supports gnu indirect functions.])
2220 if test $in_tree_ld != yes ; then
2221 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2222 if echo "$ld_ver" | grep GNU > /dev/null; then
2223 if test x"$ld_is_gold" = xyes; then
2224 # GNU gold --version looks like this:
2226 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2228 # We extract the binutils version which is more familiar and specific
2229 # than the gold version.
2230 ld_vers=`echo $ld_ver | sed -n \
2231 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2233 # GNU ld --version looks like this:
2235 # GNU ld (GNU Binutils) 2.21.51.20110225
2236 ld_vers=`echo $ld_ver | sed -n \
2237 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2239 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2240 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2241 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2242 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2247 # Solaris 2 ld -V output looks like this for a regular version:
2249 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2251 # but test versions add stuff at the end:
2253 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2255 ld_ver=`$gcc_cv_ld -V 2>&1`
2256 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2257 ld_vers=`echo $ld_ver | sed -n \
2258 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2259 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2260 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2268 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2269 [[if test $in_tree_ld = yes ; then
2271 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2272 && test $in_tree_ld_is_elf = yes; then
2273 gcc_cv_ld_hidden=yes
2276 gcc_cv_ld_hidden=yes
2277 if test x"$ld_is_gold" = xyes; then
2279 elif echo "$ld_ver" | grep GNU > /dev/null; then
2280 if test 0"$ld_date" -lt 20020404; then
2281 if test -n "$ld_date"; then
2282 # If there was date string, but was earlier than 2002-04-04, fail
2284 elif test -z "$ld_vers"; then
2285 # If there was no date string nor ld version number, something is wrong
2288 test -z "$ld_vers_patch" && ld_vers_patch=0
2289 if test "$ld_vers_major" -lt 2; then
2291 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2292 gcc_cv_ld_hidden="no"
2293 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2301 # Darwin ld has some visibility support.
2302 gcc_cv_ld_hidden=yes
2304 hppa64*-*-hpux* | ia64*-*-hpux*)
2305 gcc_cv_ld_hidden=yes
2308 # .hidden support was backported to Solaris 8, starting with ld
2310 if test "$ld_vers_minor" -ge 276; then
2311 gcc_cv_ld_hidden=yes
2316 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2317 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2318 # .symbolic was only added in Solaris 9 12/02.
2319 gcc_cv_ld_hidden=yes
2327 libgcc_visibility=no
2328 AC_SUBST(libgcc_visibility)
2329 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2330 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2331 libgcc_visibility=yes
2332 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2333 [Define if your assembler and linker support .hidden.])
2336 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2337 gcc_cv_ld_ro_rw_mix=unknown
2338 if test $in_tree_ld = yes ; then
2339 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2340 && test $in_tree_ld_is_elf = yes; then
2341 gcc_cv_ld_ro_rw_mix=read-write
2343 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2344 echo '.section myfoosect, "a"' > conftest1.s
2345 echo '.section myfoosect, "aw"' > conftest2.s
2346 echo '.byte 1' >> conftest2.s
2347 echo '.section myfoosect, "a"' > conftest3.s
2348 echo '.byte 0' >> conftest3.s
2349 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2350 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2351 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2352 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2353 conftest2.o conftest3.o > /dev/null 2>&1; then
2354 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2355 | sed -e '/myfoosect/!d' -e N`
2356 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2357 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2358 gcc_cv_ld_ro_rw_mix=read-only
2360 gcc_cv_ld_ro_rw_mix=read-write
2365 rm -f conftest.* conftest[123].*
2368 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2369 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2370 [Define if your linker links a mix of read-only
2371 and read-write sections into a read-write section.])
2373 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2375 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2376 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2384 [[# GAS versions before 2.11 do not support uleb128,
2385 # despite appearing to.
2386 # ??? There exists an elf-specific test that will crash
2387 # the assembler. Perhaps it's better to figure out whether
2388 # arbitrary sections are supported and try the test.
2389 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2390 if echo "$as_ver" | grep GNU > /dev/null; then
2391 as_vers=`echo $as_ver | sed -n \
2392 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2393 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2394 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2395 if test $as_major -eq 2 && test $as_minor -lt 11
2397 else gcc_cv_as_leb128=yes
2400 [AC_DEFINE(HAVE_AS_LEB128, 1,
2401 [Define if your assembler supports .sleb128 and .uleb128.])])
2403 # Check if we have assembler support for unwind directives.
2404 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2411 .cfi_escape 1, 2, 3, 4, 5
2415 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2416 # read-only and read-write sections, we need to make sure that the
2417 # assembler used emits read-write .eh_frame sections.
2418 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2419 if test "x$gcc_cv_objdump" != x; then
2420 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2421 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2422 gcc_cv_as_cfi_directive=no
2425 i?86-*-solaris2.1[[0-9]]*)
2426 # On Solaris/x86, make sure that GCC and gas agree on using
2427 # read-only .eh_frame sections for 64-bit.
2428 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2429 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2430 sed -e /.eh_frame/!d -e N | \
2431 grep READONLY > /dev/null; then
2432 gcc_cv_as_cfi_directive=yes
2434 gcc_cv_as_cfi_directive=no
2438 gcc_cv_as_cfi_directive=yes
2443 # no objdump, err on the side of caution
2444 gcc_cv_as_cfi_directive=no
2447 gcc_cv_as_cfi_directive=yes
2451 gcc_cv_as_cfi_directive=yes
2454 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2455 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2459 .cfi_adjust_cfa_offset 64
2461 .cfi_adjust_cfa_offset 128
2464 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2465 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2466 gcc_cv_as_cfi_advance_working=yes
2470 # no objdump, err on the side of caution
2471 gcc_cv_as_cfi_advance_working=no
2473 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2474 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2475 [`if test $gcc_cv_as_cfi_directive = yes \
2476 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2477 [Define 0/1 if your assembler supports CFI directives.])
2479 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2480 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2481 gcc_cv_as_cfi_personality_directive, ,,
2484 .cfi_personality 0, symbol
2486 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2487 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2488 then echo 1; else echo 0; fi`],
2489 [Define 0/1 if your assembler supports .cfi_personality.])
2491 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2492 gcc_cv_as_cfi_sections_directive, ,,
2494 .cfi_sections .debug_frame, .eh_frame
2498 win32 | pe | cygwin* | mingw32* | uwin*)
2499 # Need to check that we generated the correct relocation for the
2500 # .debug_frame section. This was fixed for binutils 2.21.
2501 gcc_cv_as_cfi_sections_directive=no
2502 if test "x$gcc_cv_objdump" != x; then
2503 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2504 grep secrel > /dev/null; then
2505 gcc_cv_as_cfi_sections_directive=yes
2510 gcc_cv_as_cfi_sections_directive=yes
2513 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2514 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2515 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2516 then echo 1; else echo 0; fi`],
2517 [Define 0/1 if your assembler supports .cfi_sections.])
2519 # GAS versions up to and including 2.11.0 may mis-optimize
2521 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2529 .section .eh_frame,"aw",@progbits
2531 .4byte .LECIE1-.LSCIE1
2545 .4byte .LEFDE1-.LASFDE1
2547 .4byte .LASFDE1-__FRAME_BEGIN__
2555 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2556 cat > conftest.lit <<EOF
2557 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2558 0010 01000000 12000000 18000000 00000000 ................
2559 0020 08000000 04080000 0044 .........D @&t@
2561 cat > conftest.big <<EOF
2562 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2563 0010 00000001 00000012 00000018 00000000 ................
2564 0020 00000008 04000000 0844 .........D @&t@
2566 # If the assembler didn't choke, and we can objdump,
2567 # and we got the correct data, then succeed.
2568 # The text in the here-document typically retains its unix-style line
2569 # endings, while the output of objdump will use host line endings.
2570 # Therefore, use diff -b for the comparisons.
2571 if test x$gcc_cv_objdump != x \
2572 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2573 | tail -3 > conftest.got \
2574 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2575 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2577 gcc_cv_as_eh_frame=yes
2578 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2579 gcc_cv_as_eh_frame=buggy
2581 # Uh oh, what do we do now?
2582 gcc_cv_as_eh_frame=no
2585 if test $gcc_cv_as_eh_frame = buggy; then
2586 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2587 [Define if your assembler mis-optimizes .eh_frame data.])
2590 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2591 [elf,2,12,0], [--fatal-warnings],
2592 [.section .rodata.str, "aMS", @progbits, 1])
2593 if test $gcc_cv_as_shf_merge = no; then
2594 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2595 [elf,2,12,0], [--fatal-warnings],
2596 [.section .rodata.str, "aMS", %progbits, 1])
2598 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2599 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2600 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2602 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2603 gcc_cv_as_comdat_group,
2604 [elf,2,16,0], [--fatal-warnings],
2605 [.section .text,"axG",@progbits,.foo,comdat])
2606 if test $gcc_cv_as_comdat_group = yes; then
2607 gcc_cv_as_comdat_group_percent=no
2608 gcc_cv_as_comdat_group_group=no
2610 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2611 gcc_cv_as_comdat_group_percent,
2612 [elf,2,16,0], [--fatal-warnings],
2613 [.section .text,"axG",%progbits,.foo,comdat])
2614 if test $gcc_cv_as_comdat_group_percent = yes; then
2615 gcc_cv_as_comdat_group_group=no
2618 # Sun as uses a completely different syntax.
2623 .group foo,".text%foo",#comdat
2624 .section ".text%foo", #alloc,#execinstr,#progbits
2631 .group foo,.text%foo,#comdat
2632 .section .text%foo, "ax", @progbits
2638 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2639 gcc_cv_as_comdat_group_group,
2645 if test x"$ld_is_gold" = xyes; then
2647 elif test $in_tree_ld = yes ; then
2649 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2650 && test $in_tree_ld_is_elf = yes; then
2653 elif echo "$ld_ver" | grep GNU > /dev/null; then
2655 if test 0"$ld_date" -lt 20050308; then
2656 if test -n "$ld_date"; then
2657 # If there was date string, but was earlier than 2005-03-08, fail
2659 elif test "$ld_vers_major" -lt 2; then
2661 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2668 *-*-solaris2.1[1-9]*)
2670 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2671 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2674 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2675 # least ld version 1.2267.
2676 if test "$ld_vers_major" -gt 1; then
2678 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2680 elif test "$ld_vers_minor" -ge 2267; then
2685 # Assume linkers other than GNU ld don't support COMDAT group.
2691 # Allow overriding the automatic COMDAT group tests above.
2692 AC_ARG_ENABLE(comdat,
2693 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2694 [comdat_group="$enable_comdat"])
2695 if test $comdat_group = no; then
2696 gcc_cv_as_comdat_group=no
2697 gcc_cv_as_comdat_group_percent=no
2698 gcc_cv_as_comdat_group_group=no
2700 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2701 [`if test $gcc_cv_as_comdat_group = yes \
2702 || test $gcc_cv_as_comdat_group_percent = yes \
2703 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2704 [Define 0/1 if your assembler and linker support COMDAT groups.])
2706 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2707 gcc_cv_as_discriminator,
2711 .loc 1 1 0 discriminator 1],,
2712 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2713 [Define if your assembler supports the .loc discriminator sub-directive.])])
2715 # Thread-local storage - the check is heavily parameterized.
2724 .section ".tdata","awT",@progbits
2727 ldq $27,__tls_get_addr($29) !literal!1
2728 lda $16,foo($29) !tlsgd!1
2729 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2730 ldq $27,__tls_get_addr($29) !literal!2
2731 lda $16,foo($29) !tlsldm!2
2732 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2733 ldq $1,foo($29) !gotdtprel
2734 ldah $2,foo($29) !dtprelhi
2735 lda $3,foo($2) !dtprello
2736 lda $4,foo($29) !dtprel
2737 ldq $1,foo($29) !gottprel
2738 ldah $2,foo($29) !tprelhi
2739 lda $3,foo($2) !tprello
2740 lda $4,foo($29) !tprel'
2743 tls_as_opt=--fatal-warnings
2745 cris-*-*|crisv32-*-*)
2747 .section ".tdata","awT",@progbits
2754 tls_as_opt=--fatal-warnings
2758 .section ".tdata","awT",@progbits
2770 .section ".tdata","awT",@progbits
2774 addil LT%foo-$tls_gdidx$,gp
2775 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2778 addil LT%foo-$tls_ldidx$,gp
2780 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2781 addil LR%foo-$tls_dtpoff$,%ret0
2782 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2784 addil LT%foo-$tls_ieoff$,gp
2785 ldw RT%foo-$tls_ieoff$(%r1),%t2
2788 addil LR%foo-$tls_leoff$,%t1
2789 ldo RR%foo-$tls_leoff$(%r1),%t2'
2792 tls_as_opt=--fatal-warnings
2796 .section ".tdata","awT",%progbits
2809 i[34567]86-*-solaris2.*)
2811 tga_func=___tls_get_addr
2817 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2819 .section .tdata,"awt",@progbits'
2823 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2824 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2828 .section ".tdata","awT",@progbits'
2831 tls_as_opt="--fatal-warnings"
2833 conftest_s="$conftest_s
2837 leal foo@tlsgd(,%ebx,1), %eax
2838 leal foo@tlsldm(%ebx), %eax
2839 leal foo@dtpoff(%eax), %edx
2840 movl foo@gottpoff(%ebx), %eax
2841 subl foo@gottpoff(%ebx), %eax
2842 addl foo@gotntpoff(%ebx), %eax
2843 movl foo@indntpoff, %eax
2844 movl \$foo@tpoff, %eax
2845 subl \$foo@tpoff, %eax
2846 leal foo@ntpoff(%ecx), %eax"
2850 .section ".tdata","awT",@progbits
2854 leaq foo@TLSGD(%rip), %rdi
2855 leaq foo@TLSLD(%rip), %rdi
2856 leaq foo@DTPOFF(%rax), %rdx
2857 movq foo@GOTTPOFF(%rip), %rax
2858 movq $foo@TPOFF, %rax'
2861 tls_as_opt=--fatal-warnings
2865 .section ".tdata","awT",@progbits
2868 addl r16 = @ltoff(@dtpmod(foo#)), gp
2869 addl r17 = @ltoff(@dtprel(foo#)), gp
2870 addl r18 = @ltoff(@tprel(foo#)), gp
2871 addl r19 = @dtprel(foo#), gp
2872 adds r21 = @dtprel(foo#), r13
2873 movl r23 = @dtprel(foo#)
2874 addl r20 = @tprel(foo#), gp
2875 adds r22 = @tprel(foo#), r13
2876 movl r24 = @tprel(foo#)'
2879 tls_as_opt=--fatal-warnings
2883 .section .tdata,"awT",@progbits
2887 addiu $4, $28, %tlsgd(x)
2888 addiu $4, $28, %tlsldm(x)
2889 lui $4, %dtprel_hi(x)
2890 addiu $4, $4, %dtprel_lo(x)
2891 lw $4, %gottprel(x)($28)
2892 lui $4, %tprel_hi(x)
2893 addiu $4, $4, %tprel_lo(x)'
2896 tls_as_opt='-32 --fatal-warnings'
2900 .section .tdata,"awT",@progbits
2905 move.l x@TLSGD(%a5),%a0
2906 move.l x@TLSLDM(%a5),%a0
2907 move.l x@TLSLDO(%a5),%a0
2908 move.l x@TLSIE(%a5),%a0
2909 move.l x@TLSLE(%a5),%a0'
2912 tls_as_opt='--fatal-warnings'
2916 .section ".tdata","awT",@progbits
2924 addi 3,31,ld0@got@tlsgd
2926 addi 3,31,x1@got@tlsld
2929 addis 9,3,x2@dtprel@ha
2930 addi 9,9,x2@dtprel@l
2931 lwz 9,x3@got@tprel(31)
2934 addis 9,2,x2@tprel@ha
2935 addi 9,9,x2@tprel@l'
2938 tls_as_opt="-a32 --fatal-warnings"
2942 .section ".tdata","awT",@progbits
2950 addi 3,2,ld0@got@tlsgd
2956 addi 3,2,x1@got@tlsld
2962 addis 9,3,x2@dtprel@ha
2963 addi 9,9,x2@dtprel@l
2966 ld 9,x3@got@dtprel(2)
2972 tls_as_opt="-a64 --fatal-warnings"
2976 .section ".tdata","awT",@progbits
2985 l %r1,foo@GOTNTPOFF(%r12)
2986 l %r1,0(%r1):tls_load:foo
2987 bas %r14,0(%r1,%r13):tls_gdcall:foo
2988 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2991 tls_as_opt="-m31 --fatal-warnings"
2995 .section ".tdata","awT",@progbits
3003 lg %r1,foo@GOTNTPOFF(%r12)
3004 larl %r1,foo@INDNTPOFF
3005 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3006 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3009 tls_as_opt="-m64 -Aesame --fatal-warnings"
3011 sh-*-* | sh[34]-*-*)
3013 .section ".tdata","awT",@progbits
3023 tls_as_opt=--fatal-warnings
3027 sparc*-sun-solaris2.*)
3029 tga_func=__tls_get_addr
3035 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3037 .section ".tdata",#alloc,#write,#tls'
3042 .section ".tdata","awT",@progbits'
3045 tls_as_opt="-32 --fatal-warnings"
3047 conftest_s="$conftest_s
3050 sethi %tgd_hi22(foo), %o0
3051 add %o0, %tgd_lo10(foo), %o1
3052 add %l7, %o1, %o0, %tgd_add(foo)
3053 call __tls_get_addr, %tgd_call(foo)
3054 sethi %tldm_hi22(foo), %l1
3055 add %l1, %tldm_lo10(foo), %l2
3056 add %l7, %l2, %o0, %tldm_add(foo)
3057 call __tls_get_addr, %tldm_call(foo)
3058 sethi %tldo_hix22(foo), %l3
3059 xor %l3, %tldo_lox10(foo), %l4
3060 add %o0, %l4, %l5, %tldo_add(foo)
3061 sethi %tie_hi22(foo), %o3
3062 add %o3, %tie_lo10(foo), %o3
3063 ld [%l7 + %o3], %o2, %tie_ld(foo)
3064 add %g7, %o2, %o4, %tie_add(foo)
3065 sethi %tle_hix22(foo), %l1
3066 xor %l1, %tle_lox10(foo), %o5
3067 ld [%g7 + %o5], %o1"
3071 .section ".tdata","awT",@progbits
3074 movi a8, foo@TLSFUNC
3075 movi a10, foo@TLSARG
3076 callx8.tls a8, foo@TLSCALL'
3083 if test "x$enable_tls" = xno ; then
3084 : # TLS explicitly disabled.
3085 elif test "x$enable_tls" = xyes ; then
3086 set_have_as_tls=yes # TLS explicitly enabled.
3087 elif test -z "$tls_first_major"; then
3088 : # If we don't have a check, assume no support.
3090 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3091 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3092 [set_have_as_tls=yes])
3096 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3097 # with TLS support are in use, native TLS cannot work.
3101 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3102 # gld with TLS support are in use, native TLS cannot work.
3105 # TLS was introduced in the Solaris 9 FCS release and backported to
3106 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3107 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3108 # ld and GCC don't support any longer.
3110 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3112 # Check ld and ld.so.1 TLS support.
3113 if echo "$ld_ver" | grep GNU > /dev/null; then
3114 # Assume all interesting versions of GNU ld have TLS support.
3115 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3119 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3121 min_tls_ld_vers_minor=280
3123 # Solaris 8/SPARC ld has TLS support since version 1.272.
3124 sparc*-*-solaris2.8)
3125 min_tls_ld_vers_minor=272
3127 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3129 min_tls_ld_vers_minor=374
3131 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3132 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3133 min_tls_ld_vers_minor=343
3136 if test "$ld_vers_major" -gt 1 || \
3137 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3143 AC_MSG_RESULT($ld_tls_support)
3146 save_LDFLAGS="$LDFLAGS"
3150 AC_MSG_CHECKING(alternate thread library)
3152 # TLS support was backported to Solaris 8 patches, but only lives in
3153 # the alternate thread library which became the default in Solaris 9.
3154 # We want to always use that, irrespective of TLS support.
3156 # Take multilib subdir into account. There's no spec to handle
3157 # this. The 64 symlink exists since Solaris 8.
3158 lwp_dir=/usr/lib/lwp
3159 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3160 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3167 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3168 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3169 [Define to the linker flags to use for -pthread.])
3170 AC_MSG_RESULT($lwp_dir)
3172 AC_MSG_CHECKING(library containing $tga_func)
3173 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3174 # (32-bit x86) only lived in libthread, so check for that. Keep
3175 # set_have_as_tls if found, disable if not.
3176 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3177 # Clear LIBS if we cannot support TLS.
3178 if test $set_have_as_tls = no; then
3181 # Always define LIB_TLS_SPEC, even without TLS support.
3182 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3183 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3184 AC_MSG_RESULT($LIBS)
3187 LDFLAGS="$save_LDFLAGS"
3190 if test $set_have_as_tls = yes ; then
3191 AC_DEFINE(HAVE_AS_TLS, 1,
3192 [Define if your assembler and linker support thread-local storage.])
3195 # Target-specific assembler checks.
3197 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3198 gcc_cv_ld_static_dynamic=no
3199 gcc_cv_ld_static_option='-Bstatic'
3200 gcc_cv_ld_dynamic_option='-Bdynamic'
3201 if test $in_tree_ld = yes ; then
3202 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3203 gcc_cv_ld_static_dynamic=yes
3205 elif test x$gcc_cv_ld != x; then
3206 # Check if linker supports -Bstatic/-Bdynamic option
3207 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3208 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3209 gcc_cv_ld_static_dynamic=yes
3212 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3214 gcc_cv_ld_static_dynamic=yes
3215 gcc_cv_ld_static_option="-noso"
3216 gcc_cv_ld_dynamic_option="-so_archive"
3218 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3220 gcc_cv_ld_static_dynamic=yes
3222 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3224 gcc_cv_ld_static_dynamic=yes
3229 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3230 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3231 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3232 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3233 [Define to the linker option to disable use of shared objects.])
3234 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3235 [Define to the linker option to enable use of shared objects.])
3237 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3239 if test x"$demangler_in_ld" = xyes; then
3240 AC_MSG_CHECKING(linker --demangle support)
3241 gcc_cv_ld_demangle=no
3242 if test $in_tree_ld = yes; then
3243 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3244 gcc_cv_ld_demangle=yes
3246 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3247 # Check if the GNU linker supports --demangle option
3248 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3249 gcc_cv_ld_demangle=yes
3252 if test x"$gcc_cv_ld_demangle" = xyes; then
3253 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3254 [Define if your linker supports --demangle option.])
3256 AC_MSG_RESULT($gcc_cv_ld_demangle)
3259 AC_MSG_CHECKING(linker plugin support)
3261 if test -f liblto_plugin.la; then
3262 save_ld_ver="$ld_ver"
3263 save_ld_vers_major="$ld_vers_major"
3264 save_ld_vers_minor="$ld_vers_minor"
3265 save_ld_is_gold="$ld_is_gold"
3269 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3271 # FIXME: ld_is_gold?
3272 ld_vers_major="$gcc_cv_gld_major_version"
3273 ld_vers_minor="$gcc_cv_gld_minor_version"
3275 # Determine plugin linker version.
3276 # FIXME: Partial duplicate from above, generalize.
3278 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3279 if echo "$ld_ver" | grep GNU > /dev/null; then
3280 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3282 ld_vers=`echo $ld_ver | sed -n \
3283 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3285 ld_vers=`echo $ld_ver | sed -n \
3286 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3288 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3289 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3294 # Determine plugin support.
3295 if echo "$ld_ver" | grep GNU > /dev/null; then
3296 # Require GNU ld or gold 2.21+ for plugin support by default.
3297 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3299 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3300 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3305 ld_ver="$save_ld_ver"
3306 ld_vers_major="$save_ld_vers_major"
3307 ld_vers_minor="$save_ld_vers_minor"
3308 ld_is_gold="$save_ld_is_gold"
3310 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3311 [Define to the level of your linker's plugin support.])
3312 AC_MSG_RESULT($gcc_cv_lto_plugin)
3315 # All TARGET_ABI_OSF targets.
3316 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3317 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3318 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3321 extbl $3, $2, $3 !lituse_bytoff!1
3322 ldq $2, a($29) !literal!1
3323 ldq $4, b($29) !literal!2
3324 ldq_u $3, 0($2) !lituse_base!1
3325 ldq $27, f($29) !literal!5
3326 jsr $26, ($27), f !lituse_jsr!5
3327 ldah $29, 0($26) !gpdisp!3
3328 lda $0, c($29) !gprel
3329 ldah $1, d($29) !gprelhigh
3330 lda $1, d($1) !gprellow
3331 lda $29, 0($29) !gpdisp!3],,
3332 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3333 [Define if your assembler supports explicit relocations.])])
3334 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3335 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3338 ldq $27, a($29) !literal!1
3339 jsr $26, ($27), a !lituse_jsrdirect!1],,
3340 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3341 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3345 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3346 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3347 [-no-mul-bug-abort], [.text],,
3348 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3349 [Define if your assembler supports the -no-mul-bug-abort option.])])
3353 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3354 [.register %g2, #scratch],,
3355 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3356 [Define if your assembler supports .register.])])
3358 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3360 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3361 [Define if your assembler supports -relax option.])])
3363 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3364 gcc_cv_as_sparc_gotdata_op,,
3371 sethi %gdop_hix22(foo), %g1
3372 xor %g1, %gdop_lox10(foo), %g1
3373 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3374 [if test x$gcc_cv_ld != x \
3375 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3376 if test x$gcc_cv_objdump != x; then
3377 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3378 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3379 gcc_cv_as_sparc_gotdata_op=no
3381 gcc_cv_as_sparc_gotdata_op=yes
3386 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3387 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3389 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3390 gcc_cv_as_sparc_ua_pcrel,,
3398 .uaword %r_disp32(foo)],
3399 [if test x$gcc_cv_ld != x \
3400 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3401 gcc_cv_as_sparc_ua_pcrel=yes
3404 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3405 [Define if your assembler and linker support unaligned PC relative relocs.])
3407 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3408 gcc_cv_as_sparc_ua_pcrel_hidden,,
3413 .uaword %r_disp32(foo)
3414 .byte 0x32, 0x33, 0x34
3419 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3420 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3421 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3422 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3423 if $gcc_cv_objdump -R conftest 2> /dev/null \
3424 | grep 'DISP32' > /dev/null 2>&1; then
3427 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3431 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3432 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3433 ]) # unaligned pcrel relocs
3435 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3436 gcc_cv_as_sparc_offsetable_lo10,,
3439 or %g1, %lo(ab) + 12, %g1
3440 or %g1, %lo(ab + 12), %g1],
3441 [if test x$gcc_cv_objdump != x \
3442 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3443 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3444 gcc_cv_as_sparc_offsetable_lo10=yes
3446 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3447 [Define if your assembler supports offsetable %lo().])])
3451 i[34567]86-*-* | x86_64-*-*)
3455 # Full C++ conformance when using a shared libstdc++-v3 requires some
3456 # support from the Cygwin DLL, which in more recent versions exports
3457 # wrappers to aid in interposing and redirecting operators new, delete,
3458 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3459 # are configuring for a version of Cygwin that exports the wrappers.
3460 if test x$host = x$target; then
3461 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3463 # Can't check presence of libc functions during cross-compile, so
3464 # we just have to assume we're building for an up-to-date target.
3465 gcc_ac_cygwin_dll_wrappers=yes
3467 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3468 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3469 [Define if you want to generate code by default that assumes that the
3470 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3473 cygwin* | pe | mingw32*)
3474 # Recent binutils allows the three-operand form of ".comm" on PE. This
3475 # definition is used unconditionally to initialise the default state of
3476 # the target option variable that governs usage of the feature.
3477 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3478 [2,19,52],,[.comm foo,1,32])
3479 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3480 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3481 [Define if your assembler supports specifying the alignment
3482 of objects allocated using the GAS .comm command.])
3483 # Used for DWARF 2 in PE
3484 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3485 gcc_cv_as_ix86_pe_secrel32,
3491 [if test x$gcc_cv_ld != x \
3492 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3493 gcc_cv_as_ix86_pe_secrel32=yes
3496 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3497 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3498 # Test if the assembler supports the extended form of the .section
3499 # directive that specifies section alignment. LTO support uses this,
3500 # but normally only after installation, so we warn but don't fail the
3501 # configure if LTO is enabled but the assembler does not support it.
3502 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3503 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3504 if test x$gcc_cv_as_section_has_align != xyes; then
3505 case ",$enable_languages," in
3507 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3514 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3515 gcc_cv_as_ix86_filds,,,
3516 [filds mem; fists mem],,
3517 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3518 [Define if your assembler uses filds and fists mnemonics.])])
3520 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3521 gcc_cv_as_ix86_fildq,,,
3522 [fildq mem; fistpq mem],,
3523 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3524 [Define if your assembler uses fildq and fistq mnemonics.])])
3526 gcc_GAS_CHECK_FEATURE([cmov syntax],
3527 gcc_cv_as_ix86_cmov_sun_syntax,,,
3528 [cmovl.l %edx, %eax],,
3529 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3530 [Define if your assembler supports the Sun syntax for cmov.])])
3532 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3533 gcc_cv_as_ix86_ffreep,,,
3535 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3536 [Define if your assembler supports the ffreep mnemonic.])])
3538 gcc_GAS_CHECK_FEATURE([.quad directive],
3539 gcc_cv_as_ix86_quad,,,
3541 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3542 [Define if your assembler supports the .quad directive.])])
3544 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3545 gcc_cv_as_ix86_sahf,,,
3548 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3549 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3551 gcc_GAS_CHECK_FEATURE([swap suffix],
3552 gcc_cv_as_ix86_swap,,,
3553 [movl.s %esp, %ebp],,
3554 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3555 [Define if your assembler supports the swap suffix.])])
3557 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3558 gcc_cv_as_ix86_diff_sect_delta,,,
3566 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3567 [Define if your assembler supports the subtraction of symbols in different sections.])])
3569 # These two are used unconditionally by i386.[ch]; it is to be defined
3570 # to 1 if the feature is present, 0 otherwise.
3571 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3572 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3578 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3579 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3580 [Define true if the assembler supports '.long foo@GOTOFF'.])
3582 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3583 gcc_cv_as_ix86_rep_lock_prefix,,,
3585 lock addl %edi, (%eax,%esi)
3586 lock orl $0, (%esp)],,
3587 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3588 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3590 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3591 gcc_cv_as_ix86_tlsgdplt,,,
3592 [call tls_gd@tlsgdplt],,
3593 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3594 [Define if your assembler supports @tlsgdplt.])])
3596 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3597 gcc_cv_as_ix86_tlsldmplt,,,
3598 [call tls_ld@tlsldmplt],,
3599 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3600 [Define if your assembler supports @tlsldmplt.])])
3605 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3606 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3608 addl r15 = @ltoffx(x#), gp
3610 ld8.mov r16 = [[r15]], x#],,
3611 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3612 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3618 *-*-aix*) conftest_s=' .machine "pwr5"
3622 gcc_GAS_CHECK_FEATURE([.machine directive support],
3623 gcc_cv_as_machine_directive,,,
3624 [ .machine ppc7400])
3625 if test x$gcc_cv_as_machine_directive != xyes; then
3626 echo "*** This target requires an assembler supporting \".machine\"" >&2
3627 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3628 test x$build = x$target && exit 1
3632 *) conftest_s=' .machine power4
3637 gcc_GAS_CHECK_FEATURE([mfcr field support],
3638 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3640 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3641 [Define if your assembler supports mfcr field.])])
3644 *-*-aix*) conftest_s=' .machine "pwr5"
3647 *) conftest_s=' .machine power5
3652 gcc_GAS_CHECK_FEATURE([popcntb support],
3653 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3655 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3656 [Define if your assembler supports popcntb field.])])
3659 *-*-aix*) conftest_s=' .machine "pwr5x"
3662 *) conftest_s=' .machine power5
3667 gcc_GAS_CHECK_FEATURE([fp round support],
3668 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3670 [AC_DEFINE(HAVE_AS_FPRND, 1,
3671 [Define if your assembler supports fprnd.])])
3674 *-*-aix*) conftest_s=' .machine "pwr6"
3677 *) conftest_s=' .machine power6
3682 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3683 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3685 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3686 [Define if your assembler supports mffgpr and mftgpr.])])
3689 *-*-aix*) conftest_s=' .csect .text[[PR]]
3691 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3695 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3696 *) conftest_s=' .text
3698 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3701 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3702 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3704 [AC_DEFINE(HAVE_AS_REL16, 1,
3705 [Define if your assembler supports R_PPC_REL16 relocs.])])
3708 *-*-aix*) conftest_s=' .machine "pwr6"
3711 *) conftest_s=' .machine power6
3716 gcc_GAS_CHECK_FEATURE([compare bytes support],
3717 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3719 [AC_DEFINE(HAVE_AS_CMPB, 1,
3720 [Define if your assembler supports cmpb.])])
3723 *-*-aix*) conftest_s=' .machine "pwr6"
3726 *) conftest_s=' .machine power6
3731 gcc_GAS_CHECK_FEATURE([decimal float support],
3732 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3734 [AC_DEFINE(HAVE_AS_DFP, 1,
3735 [Define if your assembler supports DFP instructions.])])
3738 *-*-aix*) conftest_s=' .machine "pwr7"
3741 *) conftest_s=' .machine power7
3746 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3747 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3749 [AC_DEFINE(HAVE_AS_VSX, 1,
3750 [Define if your assembler supports VSX instructions.])])
3753 *-*-aix*) conftest_s=' .machine "pwr7"
3756 *) conftest_s=' .machine power7
3761 gcc_GAS_CHECK_FEATURE([popcntd support],
3762 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3764 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3765 [Define if your assembler supports POPCNTD instructions.])])
3768 *-*-aix*) conftest_s=' .csect .text[[PR]]
3770 *) conftest_s=' .text
3774 gcc_GAS_CHECK_FEATURE([lwsync support],
3775 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3777 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3778 [Define if your assembler supports LWSYNC instructions.])])
3781 *-*-aix*) conftest_s=' .machine "476"
3784 *) conftest_s=' .machine "476"
3789 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3790 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3792 [AC_DEFINE(HAVE_AS_DCI, 1,
3793 [Define if your assembler supports the DCI/ICI instructions.])])
3795 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3796 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3797 [.gnu_attribute 4,1],,
3798 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3799 [Define if your assembler supports .gnu_attribute.])])
3801 gcc_GAS_CHECK_FEATURE([tls marker support],
3802 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3803 [ bl __tls_get_addr(x@tlsgd)],,
3804 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3805 [Define if your assembler supports arg info for __tls_get_addr.])])
3809 gcc_GAS_CHECK_FEATURE([.ref support],
3810 gcc_cv_as_aix_ref, [2.21.0],,
3811 [ .csect stuff[[rw]]
3817 [AC_DEFINE(HAVE_AS_REF, 1,
3818 [Define if your assembler supports .ref])])
3824 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3825 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3826 [ lw $4,%gp_rel(foo)($4)],,
3827 [if test x$target_cpu_default = x
3828 then target_cpu_default=MASK_EXPLICIT_RELOCS
3829 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3831 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3832 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3833 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3834 [Define if the assembler understands -mno-shared.])])
3836 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3837 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3838 [.gnu_attribute 4,1],,
3839 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3840 [Define if your assembler supports .gnu_attribute.])])
3842 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3843 gcc_cv_as_mips_dtprelword, [2,18,0],,
3844 [.section .tdata,"awT",@progbits
3848 .dtprelword x+0x8000],,
3849 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3850 [Define if your assembler supports .dtprelword.])])
3852 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3853 gcc_cv_as_mips_dspr1_mult,,,
3863 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3864 [Define if your assembler supports DSPR1 mult.])])
3866 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3867 gcc_cv_as_ld_jalr_reloc=no
3868 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3869 if test $in_tree_ld = yes ; then
3870 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3871 && test $in_tree_ld_is_elf = yes; then
3872 gcc_cv_as_ld_jalr_reloc=yes
3874 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3875 echo ' .ent x' > conftest.s
3876 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3877 echo ' ld $25,%call16(y)($28)' >> conftest.s
3878 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3879 echo '1: jalr $25' >> conftest.s
3880 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3881 echo '1: jalr $25' >> conftest.s
3882 echo ' .end x' >> conftest.s
3883 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3884 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3885 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3886 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3887 gcc_cv_as_ld_jalr_reloc=yes
3893 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3894 if test x$target_cpu_default = x; then
3895 target_cpu_default=MASK_RELAX_PIC_CALLS
3897 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3900 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3902 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3903 [gcc_cv_ld_mips_personality_relaxation],
3904 [gcc_cv_ld_mips_personality_relaxation=no
3905 if test $in_tree_ld = yes ; then
3906 if test "$gcc_cv_gld_major_version" -eq 2 \
3907 -a "$gcc_cv_gld_minor_version" -ge 21 \
3908 -o "$gcc_cv_gld_major_version" -gt 2; then
3909 gcc_cv_ld_mips_personality_relaxation=yes
3911 elif test x$gcc_cv_as != x \
3912 -a x$gcc_cv_ld != x \
3913 -a x$gcc_cv_readelf != x ; then
3914 cat > conftest.s <<EOF
3916 .cfi_personality 0x80,indirect_ptr
3923 .section .data,"aw",@progbits
3927 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3928 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3929 if $gcc_cv_readelf -d conftest 2>&1 \
3930 | grep TEXTREL > /dev/null 2>&1; then
3932 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3933 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3936 gcc_cv_ld_mips_personality_relaxation=yes
3940 rm -f conftest.s conftest.o conftest])
3941 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3942 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3943 [Define if your linker can relax absolute .eh_frame personality
3944 pointers into PC-relative form.])
3949 # Mips and HP-UX need the GNU assembler.
3950 # Linux on IA64 might be able to use the Intel assembler.
3953 mips*-*-* | *-*-hpux* )
3954 if test x$gas_flag = xyes \
3955 || test x"$host" != x"$build" \
3956 || test ! -x "$gcc_cv_as" \
3957 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3960 echo "*** This configuration requires the GNU assembler" >&2
3966 # ??? Not all targets support dwarf2 debug_line, even within a version
3967 # of gas. Moreover, we need to emit a valid instruction to trigger any
3968 # info to the output file. So, as supported targets are added to gas 2.11,
3969 # add some instruction here to (also) show we expect this might work.
3970 # ??? Once 2.11 is released, probably need to add first known working
3971 # version to the per-target configury.
3973 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3974 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3984 if test x"$insn" != x; then
3986 .file 1 \"conftest.s\"
3989 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3990 gcc_cv_as_dwarf2_debug_line,
3991 [elf,2,11,0],, [$conftest_s],
3992 [if test x$gcc_cv_objdump != x \
3993 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3994 | grep debug_line > /dev/null 2>&1; then
3995 gcc_cv_as_dwarf2_debug_line=yes
3998 # The .debug_line file table must be in the exact order that
3999 # we specified the files, since these indices are also used
4000 # by DW_AT_decl_file. Approximate this test by testing if
4001 # the assembler bitches if the same index is assigned twice.
4002 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4003 gcc_cv_as_dwarf2_file_buggy,,,
4007 if test $gcc_cv_as_dwarf2_debug_line = yes \
4008 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4009 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4010 [Define if your assembler supports dwarf2 .file/.loc directives,
4011 and preserves file table indices exactly as given.])
4014 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4015 gcc_cv_as_gdwarf2_flag,
4016 [elf,2,11,0], [--gdwarf2], [$insn],,
4017 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4018 [Define if your assembler supports the --gdwarf2 option.])])
4020 gcc_GAS_CHECK_FEATURE([--gstabs option],
4021 gcc_cv_as_gstabs_flag,
4022 [elf,2,11,0], [--gstabs], [$insn],
4023 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4024 # and warns about it, but still exits successfully. So check for
4026 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4028 else gcc_cv_as_gstabs_flag=yes
4030 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4031 [Define if your assembler supports the --gstabs option.])])
4033 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4034 gcc_cv_as_debug_prefix_map_flag,
4035 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4036 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4037 [Define if your assembler supports the --debug-prefix-map option.])])
4040 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4043 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4044 [Define if your assembler supports .lcomm with an alignment field.])])
4046 AC_ARG_ENABLE(gnu-unique-object,
4047 [AS_HELP_STRING([--enable-gnu-unique-object],
4048 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4049 [case $enable_gnu_unique_object in
4051 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4052 Valid choices are 'yes' and 'no'.]) ;;
4054 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4056 [.type foo, @gnu_unique_object],,
4057 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4058 [[if test x$host = x$build -a x$host = x$target &&
4059 ldd --version 2>/dev/null &&
4060 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4061 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4062 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4063 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4064 if test "$glibcnum" -ge 2011 ; then
4065 enable_gnu_unique_object=yes
4068 if test x$enable_gnu_unique_object = xyes; then
4069 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4070 [Define if your assembler supports @gnu_unique_object.])
4073 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4074 [gcc_cv_as_line_zero],
4075 [gcc_cv_as_line_zero=no
4076 if test $in_tree_gas = yes; then
4077 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4078 elif test "x$gcc_cv_as" != x; then
4079 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4080 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4081 test "x`cat conftest.out`" = x
4083 gcc_cv_as_line_zero=yes
4085 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4086 cat conftest.s >&AS_MESSAGE_LOG_FD
4087 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4088 cat conftest.out >&AS_MESSAGE_LOG_FD
4090 rm -f conftest.o conftest.s conftest.out
4092 if test "x$gcc_cv_as_line_zero" = xyes; then
4093 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4094 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4097 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4098 gcc_cv_ld_eh_frame_hdr=no
4099 if test $in_tree_ld = yes ; then
4100 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4101 && test $in_tree_ld_is_elf = yes; then
4102 gcc_cv_ld_eh_frame_hdr=yes
4104 elif test x$gcc_cv_ld != x; then
4105 if echo "$ld_ver" | grep GNU > /dev/null; then
4106 # Check if linker supports --eh-frame-hdr option
4107 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4108 gcc_cv_ld_eh_frame_hdr=yes
4113 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4114 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4115 gcc_cv_ld_eh_frame_hdr=yes
4121 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4122 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4123 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4124 [Define if your linker supports .eh_frame_hdr.])
4126 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4128 AC_MSG_CHECKING(linker position independent executable support)
4130 if test $in_tree_ld = yes ; then
4131 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4132 && test $in_tree_ld_is_elf = yes; then
4135 elif test x$gcc_cv_ld != x; then
4136 # Check if linker supports -pie option
4137 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4141 if test x"$gcc_cv_ld_pie" = xyes; then
4142 AC_DEFINE(HAVE_LD_PIE, 1,
4143 [Define if your linker supports -pie option.])
4145 AC_MSG_RESULT($gcc_cv_ld_pie)
4147 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4148 gcc_cv_ld_eh_gc_sections=no
4149 if test $in_tree_ld = yes ; then
4150 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4151 && test $in_tree_ld_is_elf = yes; then
4152 gcc_cv_ld_eh_gc_sections=yes
4154 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4155 cat > conftest.s <<EOF
4158 .type _start, @function
4161 .size _start, .-_start
4162 .section .text.foo,"ax",@progbits
4163 .type foo, @function
4167 .section .gcc_except_table.foo,"a",@progbits
4170 .section .eh_frame,"a",@progbits
4173 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4174 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4175 | grep "gc-sections option ignored" > /dev/null; then
4176 gcc_cv_ld_eh_gc_sections=no
4177 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4178 | grep gcc_except_table > /dev/null; then
4179 gcc_cv_ld_eh_gc_sections=yes
4180 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4181 if test x$gcc_cv_as_comdat_group != xyes; then
4182 gcc_cv_ld_eh_gc_sections=no
4183 cat > conftest.s <<EOF
4186 .type _start, @function
4189 .size _start, .-_start
4190 .section .gnu.linkonce.t.foo,"ax",@progbits
4191 .type foo, @function
4195 .section .gcc_except_table.foo,"a",@progbits
4198 .section .eh_frame,"a",@progbits
4201 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4202 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4203 | grep "gc-sections option ignored" > /dev/null; then
4204 gcc_cv_ld_eh_gc_sections=no
4205 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4206 | grep gcc_except_table > /dev/null; then
4207 gcc_cv_ld_eh_gc_sections=yes
4213 rm -f conftest.s conftest.o conftest
4217 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4218 gcc_cv_ld_eh_gc_sections=no
4221 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4222 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4223 [Define if your linker supports garbage collection of
4224 sections in presence of EH frames.])
4226 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4228 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4229 gcc_cv_ld_eh_gc_sections_bug=no
4230 if test $in_tree_ld = yes ; then
4231 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4232 && test $in_tree_ld_is_elf = yes; then
4233 gcc_cv_ld_eh_gc_sections_bug=yes
4235 elif test x$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
4236 gcc_cv_ld_eh_gc_sections_bug=yes
4237 cat > conftest.s <<EOF
4240 .type _start, @function
4243 .size _start, .-_start
4244 .section .text.startup.foo,"ax",@progbits
4245 .type foo, @function
4249 .section .gcc_except_table.foo,"a",@progbits
4252 .section .eh_frame,"a",@progbits
4255 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4256 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4257 | grep "gc-sections option ignored" > /dev/null; then
4259 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4260 | grep gcc_except_table > /dev/null; then
4261 gcc_cv_ld_eh_gc_sections_bug=no
4264 rm -f conftest.s conftest.o conftest
4266 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4267 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4268 [Define if your linker has buggy garbage collection of
4269 sections support when .text.startup.foo like sections are used.])
4271 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4277 AC_CACHE_CHECK(linker --as-needed support,
4278 gcc_cv_ld_as_needed,
4279 [gcc_cv_ld_as_needed=no
4280 if test $in_tree_ld = yes ; then
4281 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4282 && test $in_tree_ld_is_elf = yes; then
4283 gcc_cv_ld_as_needed=yes
4285 elif test x$gcc_cv_ld != x; then
4286 # Check if linker supports --as-needed and --no-as-needed options
4287 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4288 gcc_cv_ld_as_needed=yes
4292 if test x"$gcc_cv_ld_as_needed" = xyes; then
4293 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4294 [Define if your linker supports --as-needed and --no-as-needed options.])
4297 case "$target:$tm_file" in
4298 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4299 AC_CACHE_CHECK(linker support for omitting dot symbols,
4300 gcc_cv_ld_no_dot_syms,
4301 [gcc_cv_ld_no_dot_syms=no
4302 if test $in_tree_ld = yes ; then
4303 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4304 gcc_cv_ld_no_dot_syms=yes
4306 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4307 cat > conftest1.s <<EOF
4311 cat > conftest2.s <<EOF
4312 .section ".opd","aw"
4317 .quad .LEfoo,.TOC.@tocbase,0
4323 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4324 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4325 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4326 gcc_cv_ld_no_dot_syms=yes
4328 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4331 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4332 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4333 [Define if your PowerPC64 linker only needs function descriptor syms.])
4336 AC_CACHE_CHECK(linker large toc support,
4337 gcc_cv_ld_large_toc,
4338 [gcc_cv_ld_large_toc=no
4339 if test $in_tree_ld = yes ; then
4340 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4341 gcc_cv_ld_large_toc=yes
4343 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4344 cat > conftest.s <<EOF
4345 .section ".tbss","awT",@nobits
4351 addis 9,13,ie0@got@tprel@ha
4352 ld 9,ie0@got@tprel@l(9)
4354 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4355 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4356 gcc_cv_ld_large_toc=yes
4358 rm -f conftest conftest.o conftest.s
4361 if test x"$gcc_cv_ld_large_toc" = xyes; then
4362 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4363 [Define if your PowerPC64 linker supports a large TOC.])
4368 AC_CACHE_CHECK(linker --build-id support,
4370 [gcc_cv_ld_buildid=no
4371 if test $in_tree_ld = yes ; then
4372 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4373 "$gcc_cv_gld_minor_version" -ge 18 -o \
4374 "$gcc_cv_gld_major_version" -gt 2 \
4375 && test $in_tree_ld_is_elf = yes; then
4376 gcc_cv_ld_buildid=yes
4378 elif test x$gcc_cv_ld != x; then
4379 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4380 gcc_cv_ld_buildid=yes
4383 if test x"$gcc_cv_ld_buildid" = xyes; then
4384 AC_DEFINE(HAVE_LD_BUILDID, 1,
4385 [Define if your linker supports --build-id.])
4388 AC_ARG_ENABLE(linker-build-id,
4389 [AS_HELP_STRING([--enable-linker-build-id],
4390 [compiler will always pass --build-id to linker])],
4392 enable_linker_build_id=no)
4394 if test x"$enable_linker_build_id" = xyes; then
4395 if test x"$gcc_cv_ld_buildid" = xyes; then
4396 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4397 [Define if gcc should always pass --build-id to linker.])
4399 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4403 # In binutils 2.21, GNU ld gained support for new emulations fully
4404 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4405 AC_CACHE_CHECK(linker *_sol2 emulation support,
4406 gcc_cv_ld_sol2_emulation,
4407 [gcc_cv_ld_sol2_emulation=no
4408 if test $in_tree_ld = yes ; then
4409 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4410 "$gcc_cv_gld_minor_version" -ge 21 -o \
4411 "$gcc_cv_gld_major_version" -gt 2 \
4412 && test $in_tree_ld_is_elf = yes; then
4413 gcc_cv_ld_sol2_emulation=yes
4415 elif test x$gcc_cv_ld != x; then
4416 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4417 grep _sol2 > /dev/null; then
4418 gcc_cv_ld_sol2_emulation=yes
4421 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4422 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4423 [Define if your linker supports the *_sol2 emulations.])
4426 AC_CACHE_CHECK(linker --sysroot support,
4428 [gcc_cv_ld_sysroot=no
4429 if test $in_tree_ld = yes ; then
4430 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4431 gcc_cv_ld_sysroot=yes
4433 elif test x$gcc_cv_ld != x; then
4434 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4435 gcc_cv_ld_sysroot=yes
4438 if test x"$gcc_cv_ld_sysroot" = xyes; then
4439 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4440 [Define if your linker supports --sysroot.])
4443 if test x$with_sysroot = x && test x$host = x$target \
4444 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4445 && test "$prefix" != "NONE"; then
4446 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4447 [Define to PREFIX/include if cpp should also search that directory.])
4450 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4451 if test "x$with_headers" != x; then
4452 target_header_dir=$with_headers
4453 elif test "x$with_sysroot" = x; then
4454 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4455 elif test "x$with_build_sysroot" != "x"; then
4456 target_header_dir="${with_build_sysroot}/usr/include"
4457 elif test "x$with_sysroot" = xyes; then
4458 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4460 target_header_dir="${with_sysroot}/usr/include"
4463 target_header_dir=/usr/include
4466 # Test for stack protector support in target C library.
4467 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4468 gcc_cv_libc_provides_ssp,
4469 [gcc_cv_libc_provides_ssp=no
4471 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4472 [# glibc 2.4 and later provides __stack_chk_fail and
4473 # either __stack_chk_guard, or TLS access to stack guard canary.
4474 if test -f $target_header_dir/features.h \
4475 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4476 $target_header_dir/features.h > /dev/null; then
4477 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4478 $target_header_dir/features.h > /dev/null; then
4479 gcc_cv_libc_provides_ssp=yes
4480 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4481 $target_header_dir/features.h > /dev/null \
4482 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4483 $target_header_dir/features.h > /dev/null; then
4484 gcc_cv_libc_provides_ssp=yes
4485 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4486 $target_header_dir/features.h > /dev/null && \
4487 test -f $target_header_dir/bits/uClibc_config.h && \
4488 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4489 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4490 gcc_cv_libc_provides_ssp=yes
4495 # Avoid complicated tests (see
4496 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4497 # simply assert that glibc does provide this, which is true for all
4498 # realistically usable GNU/Hurd configurations.
4499 gcc_cv_libc_provides_ssp=yes;;
4500 *-*-darwin* | *-*-freebsd*)
4501 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4502 [echo "no __stack_chk_fail on this target"])
4504 *) gcc_cv_libc_provides_ssp=no ;;
4507 if test x$gcc_cv_libc_provides_ssp = xyes; then
4508 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4509 [Define if your target C library provides stack protector support])
4512 # Test for <sys/sdt.h> on the target.
4513 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4514 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4516 if test -f $target_header_dir/sys/sdt.h; then
4517 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4518 [Define if your target C library provides sys/sdt.h])
4520 AC_MSG_RESULT($have_sys_sdt_h)
4522 # Check if TFmode long double should be used by default or not.
4523 # Some glibc targets used DFmode long double, but with glibc 2.4
4524 # and later they can use TFmode.
4526 powerpc*-*-linux* | \
4530 AC_ARG_WITH(long-double-128,
4531 [AS_HELP_STRING([--with-long-double-128],
4532 [use 128-bit long double by default])],
4533 gcc_cv_target_ldbl128="$with_long_double_128",
4534 [[gcc_cv_target_ldbl128=no
4535 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4536 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4537 && gcc_cv_target_ldbl128=yes
4541 if test x$gcc_cv_target_ldbl128 = xyes; then
4542 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4543 [Define if TFmode long double should be the default])
4546 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4547 gcc_cv_target_dl_iterate_phdr=unknown
4550 # <link.h> needs both a dl_iterate_phdr declaration and support for
4551 # compilation with largefile support.
4552 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4553 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4554 gcc_cv_target_dl_iterate_phdr=yes
4556 gcc_cv_target_dl_iterate_phdr=no
4560 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4561 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4562 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4563 [Define if your target C library provides the `dl_iterate_phdr' function.])
4565 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4567 # Find out what GC implementation we want, or may, use.
4569 [AS_HELP_STRING([--with-gc={page,zone}],
4570 [choose the garbage collection mechanism to use
4571 with the compiler])],
4578 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4581 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4586 echo "Using $GGC for garbage collection."
4588 # Libraries to use on the host. This will normally be set by the top
4589 # level Makefile. Here we simply capture the value for our Makefile.
4590 if test -z "${HOST_LIBS+set}"; then
4595 # Use the system's zlib library.
4597 zlibinc="-I\$(srcdir)/../zlib"
4598 AC_ARG_WITH(system-zlib,
4599 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4606 dnl Very limited version of automake's enable-maintainer-mode
4608 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4609 dnl maintainer-mode is disabled by default
4610 AC_ARG_ENABLE(maintainer-mode,
4611 [AS_HELP_STRING([--enable-maintainer-mode],
4612 [enable make rules and dependencies not useful
4613 (and sometimes confusing) to the casual installer])],
4614 maintainer_mode=$enableval,
4617 AC_MSG_RESULT($maintainer_mode)
4619 if test "$maintainer_mode" = "yes"; then
4630 # Make empty files to contain the specs and options for each language.
4631 # Then add #include lines to for a compiler that has specs and/or options.
4637 # These (without "all_") are set in each config-lang.in.
4638 # `language' must be a single word so is spelled singularly.
4641 all_outputs='Makefile'
4642 # List of language makefile fragments.
4644 # Additional files for gengtype
4645 all_gtfiles="$target_gtfiles"
4647 # These are the languages that are set in --enable-languages,
4648 # and are available in the GCC tree.
4649 all_selected_languages=
4651 # Add the language fragments.
4652 # Languages are added via two mechanisms. Some information must be
4653 # recorded in makefile variables, these are defined in config-lang.in.
4654 # We accumulate them and plug them into the main Makefile.
4655 # The other mechanism is a set of hooks for each of the main targets
4656 # like `clean', `install', etc.
4658 language_hooks="Make-hooks"
4660 for lang in ${srcdir}/*/config-lang.in
4663 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4665 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4666 if test "x$lang_alias" = x
4668 echo "$lang doesn't set \$language." 1>&2
4671 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4672 subdirs="$subdirs $subdir"
4674 # $gcc_subdir is where the gcc integration files are to be found
4675 # for a language, both for internal compiler purposes (compiler
4676 # sources implementing front-end to GCC tree converters), and for
4677 # build infrastructure purposes (Make-lang.in, etc.)
4679 # This will be <subdir> (relative to $srcdir) if a line like
4680 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4681 # is found in <langdir>/config-lang.in, and will remain <langdir>
4684 # Except for the language alias (fetched above), the regular
4685 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4686 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4687 # only this and the language alias.
4689 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4690 if [ "$gcc_subdir" = "" ]; then
4691 gcc_subdir="$subdir"
4694 case ",$enable_languages," in
4696 all_selected_languages="$all_selected_languages $lang_alias"
4697 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4698 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4710 . ${srcdir}/$gcc_subdir/config-lang.in
4711 if test "x$language" = x
4713 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4718 case ",$enable_languages," in
4721 for i in $subdir_requires; do
4722 test -f "${srcdir}/$i/config-lang.in" && continue
4730 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4731 if test -f $srcdir/$gcc_subdir/lang.opt; then
4732 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4733 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4735 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4736 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4738 all_languages="$all_languages $language"
4739 all_compilers="$all_compilers $compilers"
4740 all_outputs="$all_outputs $outputs"
4741 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4742 case ",$enable_languages," in
4744 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4746 AC_SUBST(enable_lto)
4752 # Pick up gtfiles for c
4754 . ${srcdir}/c-config-lang.in
4755 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4758 for language in $all_selected_languages
4760 check_languages="$check_languages check-$language"
4763 # We link each language in with a set of hooks, reached indirectly via
4764 # lang.${target}. Only do so for selected languages.
4768 target_list="all.cross start.encap rest.encap tags \
4769 install-common install-man install-info install-pdf install-html dvi \
4770 pdf html uninstall info man srcextra srcman srcinfo \
4771 mostlyclean clean distclean maintainer-clean install-plugin"
4773 for t in $target_list
4776 for lang in $all_selected_languages
4780 echo "lang.$t: $x" >> Make-hooks
4784 # Option include files
4787 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4788 option_includes="option-includes.mk"
4789 AC_SUBST_FILE(option_includes)
4797 echo "dir ." > .gdbinit
4798 echo "dir ${srcdir}" >> .gdbinit
4799 if test x$gdb_needs_out_file_path = xyes
4801 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4803 if test "x$subdirs" != x; then
4806 echo "dir ${srcdir}/$s" >> .gdbinit
4809 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4811 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4812 AC_SUBST(gcc_tooldir)
4815 # Find a directory in which to install a shared libgcc.
4817 AC_ARG_ENABLE(version-specific-runtime-libs,
4818 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4819 [specify that runtime libraries should be
4820 installed in a compiler-specific directory])])
4822 AC_ARG_WITH(slibdir,
4823 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4824 slibdir="$with_slibdir",
4825 if test "${enable_version_specific_runtime_libs+set}" = set; then
4826 slibdir='$(libsubdir)'
4827 elif test "$host" != "$target"; then
4828 slibdir='$(build_tooldir)/lib'
4834 # Substitute configuration variables
4837 AC_SUBST(all_compilers)
4838 AC_SUBST(all_gtfiles)
4839 AC_SUBST(all_lang_makefrags)
4840 AC_SUBST(all_languages)
4841 AC_SUBST(all_selected_languages)
4842 AC_SUBST(build_exeext)
4843 AC_SUBST(build_install_headers_dir)
4844 AC_SUBST(build_xm_file_list)
4845 AC_SUBST(build_xm_include_list)
4846 AC_SUBST(build_xm_defines)
4847 AC_SUBST(build_file_translate)
4848 AC_SUBST(check_languages)
4849 AC_SUBST(cpp_install_dir)
4850 AC_SUBST(xmake_file)
4851 AC_SUBST(tmake_file)
4852 AC_SUBST(TM_ENDIAN_CONFIG)
4853 AC_SUBST(TM_MULTILIB_CONFIG)
4854 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4855 AC_SUBST(extra_gcc_objs)
4856 AC_SUBST(user_headers_inc_next_pre)
4857 AC_SUBST(user_headers_inc_next_post)
4858 AC_SUBST(extra_headers_list)
4859 AC_SUBST(extra_objs)
4860 AC_SUBST(extra_parts)
4861 AC_SUBST(extra_passes)
4862 AC_SUBST(extra_programs)
4863 AC_SUBST(float_h_file)
4864 AC_SUBST(gcc_config_arguments)
4865 AC_SUBST(gcc_gxx_include_dir)
4866 AC_SUBST(host_exeext)
4867 AC_SUBST(host_xm_file_list)
4868 AC_SUBST(host_xm_include_list)
4869 AC_SUBST(host_xm_defines)
4870 AC_SUBST(out_host_hook_obj)
4872 AC_SUBST(lang_opt_files)
4873 AC_SUBST(lang_specs_files)
4874 AC_SUBST(lang_tree_files)
4875 AC_SUBST(local_prefix)
4877 AC_SUBST(objc_boehm_gc)
4879 AC_SUBST(out_object_file)
4880 AC_SUBST(thread_file)
4881 AC_SUBST(tm_file_list)
4882 AC_SUBST(tm_include_list)
4883 AC_SUBST(tm_defines)
4884 AC_SUBST(libgcc_tm_file_list)
4885 AC_SUBST(libgcc_tm_include_list)
4886 AC_SUBST(tm_p_file_list)
4887 AC_SUBST(tm_p_include_list)
4888 AC_SUBST(xm_file_list)
4889 AC_SUBST(xm_include_list)
4890 AC_SUBST(xm_defines)
4891 AC_SUBST(use_gcc_stdint)
4892 AC_SUBST(c_target_objs)
4893 AC_SUBST(cxx_target_objs)
4894 AC_SUBST(fortran_target_objs)
4895 AC_SUBST(target_cpu_default)
4897 AC_SUBST_FILE(language_hooks)
4900 if test x${build} = x${host} ; then
4901 if test x${host} = x${target} ; then
4902 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4904 echo "Links are now set up to build a cross-compiler" 1>&2
4905 echo " from ${host} to ${target}." 1>&2
4908 if test x${host} = x${target} ; then
4909 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4910 echo " for ${target}." 1>&2
4912 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4913 echo " from ${host} to ${target}." 1>&2
4917 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4918 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4920 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4921 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4923 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4924 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4925 if test "x${CLOOGLIBS}" != "x" ; then
4926 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4929 # Check for plugin support
4930 AC_ARG_ENABLE(plugin,
4931 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4932 enable_plugin=$enableval,
4933 enable_plugin=yes; default_plugin=yes)
4939 if test x$build = x$host; then
4940 export_sym_check="nm${exeext} -g"
4941 elif test x$host = x$target; then
4942 export_sym_check="$gcc_cv_nm -g"
4948 if test x$build = x$host; then
4949 export_sym_check="objdump${exeext} -T"
4950 elif test x$host = x$target; then
4951 export_sym_check="$gcc_cv_objdump -T"
4958 if test x"$enable_plugin" = x"yes"; then
4960 AC_MSG_CHECKING([for exported symbols])
4961 if test "x$export_sym_check" != x; then
4962 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4963 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4964 if $export_sym_check conftest | grep foobar > /dev/null; then
4965 : # No need to use a flag
4966 AC_MSG_RESULT([yes])
4968 AC_MSG_RESULT([yes])
4969 AC_MSG_CHECKING([for -rdynamic])
4970 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4971 if $export_sym_check conftest | grep foobar > /dev/null; then
4973 pluginlibs="-rdynamic"
4978 AC_MSG_RESULT([$plugin_rdynamic])
4981 AC_MSG_RESULT([unable to check])
4986 AC_SEARCH_LIBS([dlopen], [dl])
4987 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4988 pluginlibs="$pluginlibs -ldl"
4992 # Check that we can build shared objects with -fPIC -shared
4993 saved_LDFLAGS="$LDFLAGS"
4994 saved_CFLAGS="$CFLAGS"
4997 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4998 CFLAGS="$CFLAGS -fPIC"
4999 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5002 CFLAGS="$CFLAGS -fPIC"
5003 LDFLAGS="$LDFLAGS -fPIC -shared"
5006 AC_MSG_CHECKING([for -fPIC -shared])
5008 [extern int X;],[return X == 0;],
5009 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5010 [AC_MSG_RESULT([no]); have_pic_shared=no])
5011 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5015 LDFLAGS="$saved_LDFLAGS"
5016 CFLAGS="$saved_CFLAGS"
5018 # If plugin support had been requested but not available, fail.
5019 if test x"$enable_plugin" = x"no" ; then
5020 if test x"$default_plugin" != x"yes"; then
5022 Building GCC with plugin support requires a host that supports
5023 -fPIC, -shared, -ldl and -rdynamic.])
5028 AC_SUBST(pluginlibs)
5029 AC_SUBST(enable_plugin)
5030 if test x"$enable_plugin" = x"yes"; then
5031 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5035 AC_ARG_ENABLE(libquadmath-support,
5036 [AS_HELP_STRING([--disable-libquadmath-support],
5037 [disable libquadmath support for Fortran])],
5038 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5039 ENABLE_LIBQUADMATH_SUPPORT=yes)
5040 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5041 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5042 [Define to 1 to enable libquadmath support])
5046 # Specify what hash style to use by default.
5047 AC_ARG_WITH([linker-hash-style],
5048 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5049 [specify the linker hash style])],
5050 [case x"$withval" in
5052 LINKER_HASH_STYLE=sysv
5055 LINKER_HASH_STYLE=gnu
5058 LINKER_HASH_STYLE=both
5061 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5064 [LINKER_HASH_STYLE=''])
5065 if test x"${LINKER_HASH_STYLE}" != x; then
5066 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5067 [The linker hash style])
5070 # Configure the subdirectories
5071 # AC_CONFIG_SUBDIRS($subdirs)
5073 # Create the Makefile
5074 # and configure language subdirectories
5075 AC_CONFIG_FILES($all_outputs)
5077 AC_CONFIG_COMMANDS([default],
5079 case ${CONFIG_HEADERS} in
5080 *auto-host.h:config.in*)
5083 # Make sure all the subdirs exist.
5084 for d in $subdirs doc build c-family
5086 test -d $d || mkdir $d
5089 [subdirs='$subdirs'])