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
2196 # gnu_indirect_function type is an extension proposed at
2197 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2198 # selection of function implementation
2199 AC_ARG_ENABLE(gnu-indirect-function,
2200 [AS_HELP_STRING([--enable-gnu-indirect-function],
2201 [enable the use of the @gnu_indirect_function to glibc systems])],
2202 [case $enable_gnu_indirect_function in
2204 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2205 Valid choices are 'yes' and 'no'.]) ;;
2207 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2208 if test x$enable_gnu_indirect_function = xyes; then
2209 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2210 [Define if your system supports gnu indirect functions.])
2214 if test $in_tree_ld != yes ; then
2215 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2216 if echo "$ld_ver" | grep GNU > /dev/null; then
2217 if test x"$ld_is_gold" = xyes; then
2218 # GNU gold --version looks like this:
2220 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2222 # We extract the binutils version which is more familiar and specific
2223 # than the gold version.
2224 ld_vers=`echo $ld_ver | sed -n \
2225 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2227 # GNU ld --version looks like this:
2229 # GNU ld (GNU Binutils) 2.21.51.20110225
2230 ld_vers=`echo $ld_ver | sed -n \
2231 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2233 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2234 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2235 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2236 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2241 # Solaris 2 ld -V output looks like this for a regular version:
2243 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2245 # but test versions add stuff at the end:
2247 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2249 ld_ver=`$gcc_cv_ld -V 2>&1`
2250 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2251 ld_vers=`echo $ld_ver | sed -n \
2252 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2253 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2254 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2262 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2263 [[if test $in_tree_ld = yes ; then
2265 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2266 && test $in_tree_ld_is_elf = yes; then
2267 gcc_cv_ld_hidden=yes
2270 gcc_cv_ld_hidden=yes
2271 if test x"$ld_is_gold" = xyes; then
2273 elif echo "$ld_ver" | grep GNU > /dev/null; then
2274 if test 0"$ld_date" -lt 20020404; then
2275 if test -n "$ld_date"; then
2276 # If there was date string, but was earlier than 2002-04-04, fail
2278 elif test -z "$ld_vers"; then
2279 # If there was no date string nor ld version number, something is wrong
2282 test -z "$ld_vers_patch" && ld_vers_patch=0
2283 if test "$ld_vers_major" -lt 2; then
2285 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2286 gcc_cv_ld_hidden="no"
2287 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2294 hppa64*-*-hpux* | ia64*-*-hpux*)
2295 gcc_cv_ld_hidden=yes
2298 # .hidden support was backported to Solaris 8, starting with ld
2300 if test "$ld_vers_minor" -ge 276; then
2301 gcc_cv_ld_hidden=yes
2306 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2307 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2308 # .symbolic was only added in Solaris 9 12/02.
2309 gcc_cv_ld_hidden=yes
2317 libgcc_visibility=no
2318 AC_SUBST(libgcc_visibility)
2319 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2320 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2321 libgcc_visibility=yes
2322 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2323 [Define if your assembler and linker support .hidden.])
2326 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2327 gcc_cv_ld_ro_rw_mix=unknown
2328 if test $in_tree_ld = yes ; then
2329 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2330 && test $in_tree_ld_is_elf = yes; then
2331 gcc_cv_ld_ro_rw_mix=read-write
2333 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2334 echo '.section myfoosect, "a"' > conftest1.s
2335 echo '.section myfoosect, "aw"' > conftest2.s
2336 echo '.byte 1' >> conftest2.s
2337 echo '.section myfoosect, "a"' > conftest3.s
2338 echo '.byte 0' >> conftest3.s
2339 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2340 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2341 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2342 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2343 conftest2.o conftest3.o > /dev/null 2>&1; then
2344 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2345 | sed -e '/myfoosect/!d' -e N`
2346 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2347 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2348 gcc_cv_ld_ro_rw_mix=read-only
2350 gcc_cv_ld_ro_rw_mix=read-write
2355 rm -f conftest.* conftest[123].*
2358 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2359 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2360 [Define if your linker links a mix of read-only
2361 and read-write sections into a read-write section.])
2363 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2365 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2366 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2374 [[# GAS versions before 2.11 do not support uleb128,
2375 # despite appearing to.
2376 # ??? There exists an elf-specific test that will crash
2377 # the assembler. Perhaps it's better to figure out whether
2378 # arbitrary sections are supported and try the test.
2379 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2380 if echo "$as_ver" | grep GNU > /dev/null; then
2381 as_vers=`echo $as_ver | sed -n \
2382 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2383 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2384 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2385 if test $as_major -eq 2 && test $as_minor -lt 11
2387 else gcc_cv_as_leb128=yes
2390 [AC_DEFINE(HAVE_AS_LEB128, 1,
2391 [Define if your assembler supports .sleb128 and .uleb128.])])
2393 # Check if we have assembler support for unwind directives.
2394 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2401 .cfi_escape 1, 2, 3, 4, 5
2405 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2406 # read-only and read-write sections, we need to make sure that the
2407 # assembler used emits read-write .eh_frame sections.
2408 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2409 if test "x$gcc_cv_objdump" != x; then
2410 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2411 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2412 gcc_cv_as_cfi_directive=no
2415 i?86-*-solaris2.1[[0-9]]*)
2416 # On Solaris/x86, make sure that GCC and gas agree on using
2417 # read-only .eh_frame sections for 64-bit.
2418 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2419 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2420 sed -e /.eh_frame/!d -e N | \
2421 grep READONLY > /dev/null; then
2422 gcc_cv_as_cfi_directive=yes
2424 gcc_cv_as_cfi_directive=no
2428 gcc_cv_as_cfi_directive=yes
2433 # no objdump, err on the side of caution
2434 gcc_cv_as_cfi_directive=no
2437 gcc_cv_as_cfi_directive=yes
2441 gcc_cv_as_cfi_directive=yes
2444 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2445 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2449 .cfi_adjust_cfa_offset 64
2451 .cfi_adjust_cfa_offset 128
2454 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2455 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2456 gcc_cv_as_cfi_advance_working=yes
2460 # no objdump, err on the side of caution
2461 gcc_cv_as_cfi_advance_working=no
2463 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2464 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2465 [`if test $gcc_cv_as_cfi_directive = yes \
2466 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2467 [Define 0/1 if your assembler supports CFI directives.])
2469 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2470 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2471 gcc_cv_as_cfi_personality_directive, ,,
2474 .cfi_personality 0, symbol
2476 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2477 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2478 then echo 1; else echo 0; fi`],
2479 [Define 0/1 if your assembler supports .cfi_personality.])
2481 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2482 gcc_cv_as_cfi_sections_directive, ,,
2484 .cfi_sections .debug_frame, .eh_frame
2488 win32 | pe | cygwin* | mingw32* | uwin*)
2489 # Need to check that we generated the correct relocation for the
2490 # .debug_frame section. This was fixed for binutils 2.21.
2491 gcc_cv_as_cfi_sections_directive=no
2492 if test "x$gcc_cv_objdump" != x; then
2493 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2494 grep secrel > /dev/null; then
2495 gcc_cv_as_cfi_sections_directive=yes
2500 gcc_cv_as_cfi_sections_directive=yes
2503 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2504 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2505 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2506 then echo 1; else echo 0; fi`],
2507 [Define 0/1 if your assembler supports .cfi_sections.])
2509 # GAS versions up to and including 2.11.0 may mis-optimize
2511 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2519 .section .eh_frame,"aw",@progbits
2521 .4byte .LECIE1-.LSCIE1
2535 .4byte .LEFDE1-.LASFDE1
2537 .4byte .LASFDE1-__FRAME_BEGIN__
2545 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2546 cat > conftest.lit <<EOF
2547 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2548 0010 01000000 12000000 18000000 00000000 ................
2549 0020 08000000 04080000 0044 .........D @&t@
2551 cat > conftest.big <<EOF
2552 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2553 0010 00000001 00000012 00000018 00000000 ................
2554 0020 00000008 04000000 0844 .........D @&t@
2556 # If the assembler didn't choke, and we can objdump,
2557 # and we got the correct data, then succeed.
2558 # The text in the here-document typically retains its unix-style line
2559 # endings, while the output of objdump will use host line endings.
2560 # Therefore, use diff -b for the comparisons.
2561 if test x$gcc_cv_objdump != x \
2562 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2563 | tail -3 > conftest.got \
2564 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2565 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2567 gcc_cv_as_eh_frame=yes
2568 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2569 gcc_cv_as_eh_frame=buggy
2571 # Uh oh, what do we do now?
2572 gcc_cv_as_eh_frame=no
2575 if test $gcc_cv_as_eh_frame = buggy; then
2576 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2577 [Define if your assembler mis-optimizes .eh_frame data.])
2580 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2581 [elf,2,12,0], [--fatal-warnings],
2582 [.section .rodata.str, "aMS", @progbits, 1])
2583 if test $gcc_cv_as_shf_merge = no; then
2584 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2585 [elf,2,12,0], [--fatal-warnings],
2586 [.section .rodata.str, "aMS", %progbits, 1])
2588 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2589 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2590 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2592 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2593 gcc_cv_as_comdat_group,
2594 [elf,2,16,0], [--fatal-warnings],
2595 [.section .text,"axG",@progbits,.foo,comdat])
2596 if test $gcc_cv_as_comdat_group = yes; then
2597 gcc_cv_as_comdat_group_percent=no
2598 gcc_cv_as_comdat_group_group=no
2600 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2601 gcc_cv_as_comdat_group_percent,
2602 [elf,2,16,0], [--fatal-warnings],
2603 [.section .text,"axG",%progbits,.foo,comdat])
2604 if test $gcc_cv_as_comdat_group_percent = yes; then
2605 gcc_cv_as_comdat_group_group=no
2608 # Sun as uses a completely different syntax.
2613 .group foo,".text%foo",#comdat
2614 .section ".text%foo", #alloc,#execinstr,#progbits
2621 .group foo,.text%foo,#comdat
2622 .section .text%foo, "ax", @progbits
2628 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2629 gcc_cv_as_comdat_group_group,
2635 if test x"$ld_is_gold" = xyes; then
2637 elif test $in_tree_ld = yes ; then
2639 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2640 && test $in_tree_ld_is_elf = yes; then
2643 elif echo "$ld_ver" | grep GNU > /dev/null; then
2645 if test 0"$ld_date" -lt 20050308; then
2646 if test -n "$ld_date"; then
2647 # If there was date string, but was earlier than 2005-03-08, fail
2649 elif test "$ld_vers_major" -lt 2; then
2651 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2658 *-*-solaris2.1[1-9]*)
2660 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2661 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2664 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2665 # least ld version 1.2267.
2666 if test "$ld_vers_major" -gt 1; then
2668 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2670 elif test "$ld_vers_minor" -ge 2267; then
2675 # Assume linkers other than GNU ld don't support COMDAT group.
2681 # Allow overriding the automatic COMDAT group tests above.
2682 AC_ARG_ENABLE(comdat,
2683 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2684 [comdat_group="$enable_comdat"])
2685 if test $comdat_group = no; then
2686 gcc_cv_as_comdat_group=no
2687 gcc_cv_as_comdat_group_percent=no
2688 gcc_cv_as_comdat_group_group=no
2690 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2691 [`if test $gcc_cv_as_comdat_group = yes \
2692 || test $gcc_cv_as_comdat_group_percent = yes \
2693 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2694 [Define 0/1 if your assembler and linker support COMDAT groups.])
2696 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2697 gcc_cv_as_discriminator,
2701 .loc 1 1 0 discriminator 1],,
2702 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2703 [Define if your assembler supports the .loc discriminator sub-directive.])])
2705 # Thread-local storage - the check is heavily parameterized.
2714 .section ".tdata","awT",@progbits
2717 ldq $27,__tls_get_addr($29) !literal!1
2718 lda $16,foo($29) !tlsgd!1
2719 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2720 ldq $27,__tls_get_addr($29) !literal!2
2721 lda $16,foo($29) !tlsldm!2
2722 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2723 ldq $1,foo($29) !gotdtprel
2724 ldah $2,foo($29) !dtprelhi
2725 lda $3,foo($2) !dtprello
2726 lda $4,foo($29) !dtprel
2727 ldq $1,foo($29) !gottprel
2728 ldah $2,foo($29) !tprelhi
2729 lda $3,foo($2) !tprello
2730 lda $4,foo($29) !tprel'
2733 tls_as_opt=--fatal-warnings
2735 cris-*-*|crisv32-*-*)
2737 .section ".tdata","awT",@progbits
2744 tls_as_opt=--fatal-warnings
2748 .section ".tdata","awT",@progbits
2760 .section ".tdata","awT",@progbits
2764 addil LT%foo-$tls_gdidx$,gp
2765 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2768 addil LT%foo-$tls_ldidx$,gp
2770 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2771 addil LR%foo-$tls_dtpoff$,%ret0
2772 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2774 addil LT%foo-$tls_ieoff$,gp
2775 ldw RT%foo-$tls_ieoff$(%r1),%t2
2778 addil LR%foo-$tls_leoff$,%t1
2779 ldo RR%foo-$tls_leoff$(%r1),%t2'
2782 tls_as_opt=--fatal-warnings
2786 .section ".tdata","awT",%progbits
2799 i[34567]86-*-solaris2.*)
2801 tga_func=___tls_get_addr
2807 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2809 .section .tdata,"awt",@progbits'
2813 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2814 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2818 .section ".tdata","awT",@progbits'
2821 tls_as_opt="--fatal-warnings"
2823 conftest_s="$conftest_s
2827 leal foo@tlsgd(,%ebx,1), %eax
2828 leal foo@tlsldm(%ebx), %eax
2829 leal foo@dtpoff(%eax), %edx
2830 movl foo@gottpoff(%ebx), %eax
2831 subl foo@gottpoff(%ebx), %eax
2832 addl foo@gotntpoff(%ebx), %eax
2833 movl foo@indntpoff, %eax
2834 movl \$foo@tpoff, %eax
2835 subl \$foo@tpoff, %eax
2836 leal foo@ntpoff(%ecx), %eax"
2840 .section ".tdata","awT",@progbits
2844 leaq foo@TLSGD(%rip), %rdi
2845 leaq foo@TLSLD(%rip), %rdi
2846 leaq foo@DTPOFF(%rax), %rdx
2847 movq foo@GOTTPOFF(%rip), %rax
2848 movq $foo@TPOFF, %rax'
2851 tls_as_opt=--fatal-warnings
2855 .section ".tdata","awT",@progbits
2858 addl r16 = @ltoff(@dtpmod(foo#)), gp
2859 addl r17 = @ltoff(@dtprel(foo#)), gp
2860 addl r18 = @ltoff(@tprel(foo#)), gp
2861 addl r19 = @dtprel(foo#), gp
2862 adds r21 = @dtprel(foo#), r13
2863 movl r23 = @dtprel(foo#)
2864 addl r20 = @tprel(foo#), gp
2865 adds r22 = @tprel(foo#), r13
2866 movl r24 = @tprel(foo#)'
2869 tls_as_opt=--fatal-warnings
2873 .section .tdata,"awT",@progbits
2877 addiu $4, $28, %tlsgd(x)
2878 addiu $4, $28, %tlsldm(x)
2879 lui $4, %dtprel_hi(x)
2880 addiu $4, $4, %dtprel_lo(x)
2881 lw $4, %gottprel(x)($28)
2882 lui $4, %tprel_hi(x)
2883 addiu $4, $4, %tprel_lo(x)'
2886 tls_as_opt='-32 --fatal-warnings'
2890 .section .tdata,"awT",@progbits
2895 move.l x@TLSGD(%a5),%a0
2896 move.l x@TLSLDM(%a5),%a0
2897 move.l x@TLSLDO(%a5),%a0
2898 move.l x@TLSIE(%a5),%a0
2899 move.l x@TLSLE(%a5),%a0'
2902 tls_as_opt='--fatal-warnings'
2906 .section ".tdata","awT",@progbits
2914 addi 3,31,ld0@got@tlsgd
2916 addi 3,31,x1@got@tlsld
2919 addis 9,3,x2@dtprel@ha
2920 addi 9,9,x2@dtprel@l
2921 lwz 9,x3@got@tprel(31)
2924 addis 9,2,x2@tprel@ha
2925 addi 9,9,x2@tprel@l'
2928 tls_as_opt="-a32 --fatal-warnings"
2932 .section ".tdata","awT",@progbits
2940 addi 3,2,ld0@got@tlsgd
2946 addi 3,2,x1@got@tlsld
2952 addis 9,3,x2@dtprel@ha
2953 addi 9,9,x2@dtprel@l
2956 ld 9,x3@got@dtprel(2)
2962 tls_as_opt="-a64 --fatal-warnings"
2966 .section ".tdata","awT",@progbits
2975 l %r1,foo@GOTNTPOFF(%r12)
2976 l %r1,0(%r1):tls_load:foo
2977 bas %r14,0(%r1,%r13):tls_gdcall:foo
2978 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2981 tls_as_opt="-m31 --fatal-warnings"
2985 .section ".tdata","awT",@progbits
2993 lg %r1,foo@GOTNTPOFF(%r12)
2994 larl %r1,foo@INDNTPOFF
2995 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2996 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2999 tls_as_opt="-m64 -Aesame --fatal-warnings"
3001 sh-*-* | sh[34]-*-*)
3003 .section ".tdata","awT",@progbits
3013 tls_as_opt=--fatal-warnings
3017 sparc*-sun-solaris2.*)
3019 tga_func=__tls_get_addr
3025 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3027 .section ".tdata",#alloc,#write,#tls'
3032 .section ".tdata","awT",@progbits'
3035 tls_as_opt="-32 --fatal-warnings"
3037 conftest_s="$conftest_s
3040 sethi %tgd_hi22(foo), %o0
3041 add %o0, %tgd_lo10(foo), %o1
3042 add %l7, %o1, %o0, %tgd_add(foo)
3043 call __tls_get_addr, %tgd_call(foo)
3044 sethi %tldm_hi22(foo), %l1
3045 add %l1, %tldm_lo10(foo), %l2
3046 add %l7, %l2, %o0, %tldm_add(foo)
3047 call __tls_get_addr, %tldm_call(foo)
3048 sethi %tldo_hix22(foo), %l3
3049 xor %l3, %tldo_lox10(foo), %l4
3050 add %o0, %l4, %l5, %tldo_add(foo)
3051 sethi %tie_hi22(foo), %o3
3052 add %o3, %tie_lo10(foo), %o3
3053 ld [%l7 + %o3], %o2, %tie_ld(foo)
3054 add %g7, %o2, %o4, %tie_add(foo)
3055 sethi %tle_hix22(foo), %l1
3056 xor %l1, %tle_lox10(foo), %o5
3057 ld [%g7 + %o5], %o1"
3061 .section ".tdata","awT",@progbits
3064 movi a8, foo@TLSFUNC
3065 movi a10, foo@TLSARG
3066 callx8.tls a8, foo@TLSCALL'
3073 if test "x$enable_tls" = xno ; then
3074 : # TLS explicitly disabled.
3075 elif test "x$enable_tls" = xyes ; then
3076 set_have_as_tls=yes # TLS explicitly enabled.
3077 elif test -z "$tls_first_major"; then
3078 : # If we don't have a check, assume no support.
3080 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3081 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3082 [set_have_as_tls=yes])
3086 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3087 # with TLS support are in use, native TLS cannot work.
3091 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3092 # gld with TLS support are in use, native TLS cannot work.
3095 # TLS was introduced in the Solaris 9 FCS release and backported to
3096 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3097 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3098 # ld and GCC don't support any longer.
3100 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3102 # Check ld and ld.so.1 TLS support.
3103 if echo "$ld_ver" | grep GNU > /dev/null; then
3104 # Assume all interesting versions of GNU ld have TLS support.
3105 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3109 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3111 min_tls_ld_vers_minor=280
3113 # Solaris 8/SPARC ld has TLS support since version 1.272.
3114 sparc*-*-solaris2.8)
3115 min_tls_ld_vers_minor=272
3117 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3119 min_tls_ld_vers_minor=374
3121 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3122 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3123 min_tls_ld_vers_minor=343
3126 if test "$ld_vers_major" -gt 1 || \
3127 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3133 AC_MSG_RESULT($ld_tls_support)
3136 save_LDFLAGS="$LDFLAGS"
3140 AC_MSG_CHECKING(alternate thread library)
3142 # TLS support was backported to Solaris 8 patches, but only lives in
3143 # the alternate thread library which became the default in Solaris 9.
3144 # We want to always use that, irrespective of TLS support.
3146 # Take multilib subdir into account. There's no spec to handle
3147 # this. The 64 symlink exists since Solaris 8.
3148 lwp_dir=/usr/lib/lwp
3149 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3150 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3157 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3158 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3159 [Define to the linker flags to use for -pthread.])
3160 AC_MSG_RESULT($lwp_dir)
3162 AC_MSG_CHECKING(library containing $tga_func)
3163 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3164 # (32-bit x86) only lived in libthread, so check for that. Keep
3165 # set_have_as_tls if found, disable if not.
3166 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3167 # Clear LIBS if we cannot support TLS.
3168 if test $set_have_as_tls = no; then
3171 # Always define LIB_TLS_SPEC, even without TLS support.
3172 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3173 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3174 AC_MSG_RESULT($LIBS)
3177 LDFLAGS="$save_LDFLAGS"
3180 if test $set_have_as_tls = yes ; then
3181 AC_DEFINE(HAVE_AS_TLS, 1,
3182 [Define if your assembler and linker support thread-local storage.])
3185 # Target-specific assembler checks.
3187 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3188 gcc_cv_ld_static_dynamic=no
3189 gcc_cv_ld_static_option='-Bstatic'
3190 gcc_cv_ld_dynamic_option='-Bdynamic'
3191 if test $in_tree_ld = yes ; then
3192 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3193 gcc_cv_ld_static_dynamic=yes
3195 elif test x$gcc_cv_ld != x; then
3196 # Check if linker supports -Bstatic/-Bdynamic option
3197 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3198 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3199 gcc_cv_ld_static_dynamic=yes
3202 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3204 gcc_cv_ld_static_dynamic=yes
3205 gcc_cv_ld_static_option="-noso"
3206 gcc_cv_ld_dynamic_option="-so_archive"
3208 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3210 gcc_cv_ld_static_dynamic=yes
3212 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3214 gcc_cv_ld_static_dynamic=yes
3219 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3220 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3221 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3222 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3223 [Define to the linker option to disable use of shared objects.])
3224 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3225 [Define to the linker option to enable use of shared objects.])
3227 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3229 if test x"$demangler_in_ld" = xyes; then
3230 AC_MSG_CHECKING(linker --demangle support)
3231 gcc_cv_ld_demangle=no
3232 if test $in_tree_ld = yes; then
3233 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3234 gcc_cv_ld_demangle=yes
3236 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3237 # Check if the GNU linker supports --demangle option
3238 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3239 gcc_cv_ld_demangle=yes
3242 if test x"$gcc_cv_ld_demangle" = xyes; then
3243 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3244 [Define if your linker supports --demangle option.])
3246 AC_MSG_RESULT($gcc_cv_ld_demangle)
3249 AC_MSG_CHECKING(linker plugin support)
3251 if test -f liblto_plugin.la; then
3252 save_ld_ver="$ld_ver"
3253 save_ld_vers_major="$ld_vers_major"
3254 save_ld_vers_minor="$ld_vers_minor"
3255 save_ld_is_gold="$ld_is_gold"
3259 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3261 # FIXME: ld_is_gold?
3262 ld_vers_major="$gcc_cv_gld_major_version"
3263 ld_vers_minor="$gcc_cv_gld_minor_version"
3265 # Determine plugin linker version.
3266 # FIXME: Partial duplicate from above, generalize.
3268 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3269 if echo "$ld_ver" | grep GNU > /dev/null; then
3270 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3272 ld_vers=`echo $ld_ver | sed -n \
3273 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3275 ld_vers=`echo $ld_ver | sed -n \
3276 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3278 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3279 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3284 # Determine plugin support.
3285 if echo "$ld_ver" | grep GNU > /dev/null; then
3286 # Require GNU ld or gold 2.21+ for plugin support by default.
3287 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3289 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3290 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3295 ld_ver="$save_ld_ver"
3296 ld_vers_major="$save_ld_vers_major"
3297 ld_vers_minor="$save_ld_vers_minor"
3298 ld_is_gold="$save_ld_is_gold"
3300 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3301 [Define to the level of your linker's plugin support.])
3302 AC_MSG_RESULT($gcc_cv_lto_plugin)
3305 # All TARGET_ABI_OSF targets.
3306 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3307 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3308 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3311 extbl $3, $2, $3 !lituse_bytoff!1
3312 ldq $2, a($29) !literal!1
3313 ldq $4, b($29) !literal!2
3314 ldq_u $3, 0($2) !lituse_base!1
3315 ldq $27, f($29) !literal!5
3316 jsr $26, ($27), f !lituse_jsr!5
3317 ldah $29, 0($26) !gpdisp!3
3318 lda $0, c($29) !gprel
3319 ldah $1, d($29) !gprelhigh
3320 lda $1, d($1) !gprellow
3321 lda $29, 0($29) !gpdisp!3],,
3322 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3323 [Define if your assembler supports explicit relocations.])])
3324 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3325 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3328 ldq $27, a($29) !literal!1
3329 jsr $26, ($27), a !lituse_jsrdirect!1],,
3330 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3331 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3335 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3336 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3337 [-no-mul-bug-abort], [.text],,
3338 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3339 [Define if your assembler supports the -no-mul-bug-abort option.])])
3343 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3344 [.register %g2, #scratch],,
3345 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3346 [Define if your assembler supports .register.])])
3348 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3350 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3351 [Define if your assembler supports -relax option.])])
3353 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3354 gcc_cv_as_sparc_gotdata_op,,
3361 sethi %gdop_hix22(foo), %g1
3362 xor %g1, %gdop_lox10(foo), %g1
3363 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3364 [if test x$gcc_cv_ld != x \
3365 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3366 if test x$gcc_cv_objdump != x; then
3367 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3368 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3369 gcc_cv_as_sparc_gotdata_op=no
3371 gcc_cv_as_sparc_gotdata_op=yes
3376 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3377 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3379 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3380 gcc_cv_as_sparc_ua_pcrel,,
3388 .uaword %r_disp32(foo)],
3389 [if test x$gcc_cv_ld != x \
3390 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3391 gcc_cv_as_sparc_ua_pcrel=yes
3394 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3395 [Define if your assembler and linker support unaligned PC relative relocs.])
3397 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3398 gcc_cv_as_sparc_ua_pcrel_hidden,,
3403 .uaword %r_disp32(foo)
3404 .byte 0x32, 0x33, 0x34
3409 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3410 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3411 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3412 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3413 if $gcc_cv_objdump -R conftest 2> /dev/null \
3414 | grep 'DISP32' > /dev/null 2>&1; then
3417 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3421 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3422 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3423 ]) # unaligned pcrel relocs
3425 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3426 gcc_cv_as_sparc_offsetable_lo10,,
3429 or %g1, %lo(ab) + 12, %g1
3430 or %g1, %lo(ab + 12), %g1],
3431 [if test x$gcc_cv_objdump != x \
3432 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3433 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3434 gcc_cv_as_sparc_offsetable_lo10=yes
3436 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3437 [Define if your assembler supports offsetable %lo().])])
3441 i[34567]86-*-* | x86_64-*-*)
3445 # Full C++ conformance when using a shared libstdc++-v3 requires some
3446 # support from the Cygwin DLL, which in more recent versions exports
3447 # wrappers to aid in interposing and redirecting operators new, delete,
3448 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3449 # are configuring for a version of Cygwin that exports the wrappers.
3450 if test x$host = x$target; then
3451 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3453 # Can't check presence of libc functions during cross-compile, so
3454 # we just have to assume we're building for an up-to-date target.
3455 gcc_ac_cygwin_dll_wrappers=yes
3457 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3458 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3459 [Define if you want to generate code by default that assumes that the
3460 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3463 cygwin* | pe | mingw32*)
3464 # Recent binutils allows the three-operand form of ".comm" on PE. This
3465 # definition is used unconditionally to initialise the default state of
3466 # the target option variable that governs usage of the feature.
3467 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3468 [2,19,52],,[.comm foo,1,32])
3469 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3470 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3471 [Define if your assembler supports specifying the alignment
3472 of objects allocated using the GAS .comm command.])
3473 # Used for DWARF 2 in PE
3474 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3475 gcc_cv_as_ix86_pe_secrel32,
3481 [if test x$gcc_cv_ld != x \
3482 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3483 gcc_cv_as_ix86_pe_secrel32=yes
3486 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3487 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3488 # Test if the assembler supports the extended form of the .section
3489 # directive that specifies section alignment. LTO support uses this,
3490 # but normally only after installation, so we warn but don't fail the
3491 # configure if LTO is enabled but the assembler does not support it.
3492 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3493 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3494 if test x$gcc_cv_as_section_has_align != xyes; then
3495 case ",$enable_languages," in
3497 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3504 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3505 gcc_cv_as_ix86_filds,,,
3506 [filds mem; fists mem],,
3507 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3508 [Define if your assembler uses filds and fists mnemonics.])])
3510 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3511 gcc_cv_as_ix86_fildq,,,
3512 [fildq mem; fistpq mem],,
3513 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3514 [Define if your assembler uses fildq and fistq mnemonics.])])
3516 gcc_GAS_CHECK_FEATURE([cmov syntax],
3517 gcc_cv_as_ix86_cmov_sun_syntax,,,
3518 [cmovl.l %edx, %eax],,
3519 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3520 [Define if your assembler supports the Sun syntax for cmov.])])
3522 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3523 gcc_cv_as_ix86_ffreep,,,
3525 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3526 [Define if your assembler supports the ffreep mnemonic.])])
3528 gcc_GAS_CHECK_FEATURE([.quad directive],
3529 gcc_cv_as_ix86_quad,,,
3531 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3532 [Define if your assembler supports the .quad directive.])])
3534 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3535 gcc_cv_as_ix86_sahf,,,
3538 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3539 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3541 gcc_GAS_CHECK_FEATURE([swap suffix],
3542 gcc_cv_as_ix86_swap,,,
3543 [movl.s %esp, %ebp],,
3544 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3545 [Define if your assembler supports the swap suffix.])])
3547 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3548 gcc_cv_as_ix86_diff_sect_delta,,,
3556 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3557 [Define if your assembler supports the subtraction of symbols in different sections.])])
3559 # These two are used unconditionally by i386.[ch]; it is to be defined
3560 # to 1 if the feature is present, 0 otherwise.
3561 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3562 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3568 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3569 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3570 [Define true if the assembler supports '.long foo@GOTOFF'.])
3572 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3573 gcc_cv_as_ix86_rep_lock_prefix,,,
3575 lock addl %edi, (%eax,%esi)
3576 lock orl $0, (%esp)],,
3577 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3578 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3580 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3581 gcc_cv_as_ix86_tlsgdplt,,,
3582 [call tls_gd@tlsgdplt],,
3583 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3584 [Define if your assembler supports @tlsgdplt.])])
3586 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3587 gcc_cv_as_ix86_tlsldmplt,,,
3588 [call tls_ld@tlsldmplt],,
3589 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3590 [Define if your assembler supports @tlsldmplt.])])
3595 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3596 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3598 addl r15 = @ltoffx(x#), gp
3600 ld8.mov r16 = [[r15]], x#],,
3601 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3602 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3608 *-*-aix*) conftest_s=' .machine "pwr5"
3612 gcc_GAS_CHECK_FEATURE([.machine directive support],
3613 gcc_cv_as_machine_directive,,,
3614 [ .machine ppc7400])
3615 if test x$gcc_cv_as_machine_directive != xyes; then
3616 echo "*** This target requires an assembler supporting \".machine\"" >&2
3617 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3618 test x$build = x$target && exit 1
3622 *) conftest_s=' .machine power4
3627 gcc_GAS_CHECK_FEATURE([mfcr field support],
3628 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3630 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3631 [Define if your assembler supports mfcr field.])])
3634 *-*-aix*) conftest_s=' .machine "pwr5"
3637 *) conftest_s=' .machine power5
3642 gcc_GAS_CHECK_FEATURE([popcntb support],
3643 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3645 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3646 [Define if your assembler supports popcntb field.])])
3649 *-*-aix*) conftest_s=' .machine "pwr5x"
3652 *) conftest_s=' .machine power5
3657 gcc_GAS_CHECK_FEATURE([fp round support],
3658 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3660 [AC_DEFINE(HAVE_AS_FPRND, 1,
3661 [Define if your assembler supports fprnd.])])
3664 *-*-aix*) conftest_s=' .machine "pwr6"
3667 *) conftest_s=' .machine power6
3672 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3673 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3675 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3676 [Define if your assembler supports mffgpr and mftgpr.])])
3679 *-*-aix*) conftest_s=' .csect .text[[PR]]
3681 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3685 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3686 *) conftest_s=' .text
3688 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3691 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3692 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3694 [AC_DEFINE(HAVE_AS_REL16, 1,
3695 [Define if your assembler supports R_PPC_REL16 relocs.])])
3698 *-*-aix*) conftest_s=' .machine "pwr6"
3701 *) conftest_s=' .machine power6
3706 gcc_GAS_CHECK_FEATURE([compare bytes support],
3707 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3709 [AC_DEFINE(HAVE_AS_CMPB, 1,
3710 [Define if your assembler supports cmpb.])])
3713 *-*-aix*) conftest_s=' .machine "pwr6"
3716 *) conftest_s=' .machine power6
3721 gcc_GAS_CHECK_FEATURE([decimal float support],
3722 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3724 [AC_DEFINE(HAVE_AS_DFP, 1,
3725 [Define if your assembler supports DFP instructions.])])
3728 *-*-aix*) conftest_s=' .machine "pwr7"
3731 *) conftest_s=' .machine power7
3736 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3737 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3739 [AC_DEFINE(HAVE_AS_VSX, 1,
3740 [Define if your assembler supports VSX instructions.])])
3743 *-*-aix*) conftest_s=' .machine "pwr7"
3746 *) conftest_s=' .machine power7
3751 gcc_GAS_CHECK_FEATURE([popcntd support],
3752 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3754 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3755 [Define if your assembler supports POPCNTD instructions.])])
3758 *-*-aix*) conftest_s=' .csect .text[[PR]]
3760 *) conftest_s=' .text
3764 gcc_GAS_CHECK_FEATURE([lwsync support],
3765 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3767 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3768 [Define if your assembler supports LWSYNC instructions.])])
3771 *-*-aix*) conftest_s=' .machine "476"
3774 *) conftest_s=' .machine "476"
3779 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3780 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3782 [AC_DEFINE(HAVE_AS_DCI, 1,
3783 [Define if your assembler supports the DCI/ICI instructions.])])
3785 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3786 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3787 [.gnu_attribute 4,1],,
3788 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3789 [Define if your assembler supports .gnu_attribute.])])
3791 gcc_GAS_CHECK_FEATURE([tls marker support],
3792 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3793 [ bl __tls_get_addr(x@tlsgd)],,
3794 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3795 [Define if your assembler supports arg info for __tls_get_addr.])])
3799 gcc_GAS_CHECK_FEATURE([.ref support],
3800 gcc_cv_as_aix_ref, [2.21.0],,
3801 [ .csect stuff[[rw]]
3807 [AC_DEFINE(HAVE_AS_REF, 1,
3808 [Define if your assembler supports .ref])])
3814 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3815 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3816 [ lw $4,%gp_rel(foo)($4)],,
3817 [if test x$target_cpu_default = x
3818 then target_cpu_default=MASK_EXPLICIT_RELOCS
3819 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3821 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3822 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3823 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3824 [Define if the assembler understands -mno-shared.])])
3826 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3827 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3828 [.gnu_attribute 4,1],,
3829 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3830 [Define if your assembler supports .gnu_attribute.])])
3832 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3833 gcc_cv_as_mips_dtprelword, [2,18,0],,
3834 [.section .tdata,"awT",@progbits
3838 .dtprelword x+0x8000],,
3839 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3840 [Define if your assembler supports .dtprelword.])])
3842 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3843 gcc_cv_as_mips_dspr1_mult,,,
3853 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3854 [Define if your assembler supports DSPR1 mult.])])
3856 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3857 gcc_cv_as_ld_jalr_reloc=no
3858 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3859 if test $in_tree_ld = yes ; then
3860 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3861 && test $in_tree_ld_is_elf = yes; then
3862 gcc_cv_as_ld_jalr_reloc=yes
3864 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3865 echo ' .ent x' > conftest.s
3866 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3867 echo ' ld $25,%call16(y)($28)' >> conftest.s
3868 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3869 echo '1: jalr $25' >> conftest.s
3870 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3871 echo '1: jalr $25' >> conftest.s
3872 echo ' .end x' >> conftest.s
3873 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3874 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3875 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3876 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3877 gcc_cv_as_ld_jalr_reloc=yes
3883 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3884 if test x$target_cpu_default = x; then
3885 target_cpu_default=MASK_RELAX_PIC_CALLS
3887 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3890 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3892 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3893 [gcc_cv_ld_mips_personality_relaxation],
3894 [gcc_cv_ld_mips_personality_relaxation=no
3895 if test $in_tree_ld = yes ; then
3896 if test "$gcc_cv_gld_major_version" -eq 2 \
3897 -a "$gcc_cv_gld_minor_version" -ge 21 \
3898 -o "$gcc_cv_gld_major_version" -gt 2; then
3899 gcc_cv_ld_mips_personality_relaxation=yes
3901 elif test x$gcc_cv_as != x \
3902 -a x$gcc_cv_ld != x \
3903 -a x$gcc_cv_readelf != x ; then
3904 cat > conftest.s <<EOF
3906 .cfi_personality 0x80,indirect_ptr
3913 .section .data,"aw",@progbits
3917 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3918 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3919 if $gcc_cv_readelf -d conftest 2>&1 \
3920 | grep TEXTREL > /dev/null 2>&1; then
3922 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3923 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3926 gcc_cv_ld_mips_personality_relaxation=yes
3930 rm -f conftest.s conftest.o conftest])
3931 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3932 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3933 [Define if your linker can relax absolute .eh_frame personality
3934 pointers into PC-relative form.])
3939 # Mips and HP-UX need the GNU assembler.
3940 # Linux on IA64 might be able to use the Intel assembler.
3943 mips*-*-* | *-*-hpux* )
3944 if test x$gas_flag = xyes \
3945 || test x"$host" != x"$build" \
3946 || test ! -x "$gcc_cv_as" \
3947 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3950 echo "*** This configuration requires the GNU assembler" >&2
3956 # ??? Not all targets support dwarf2 debug_line, even within a version
3957 # of gas. Moreover, we need to emit a valid instruction to trigger any
3958 # info to the output file. So, as supported targets are added to gas 2.11,
3959 # add some instruction here to (also) show we expect this might work.
3960 # ??? Once 2.11 is released, probably need to add first known working
3961 # version to the per-target configury.
3963 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3964 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3974 if test x"$insn" != x; then
3976 .file 1 \"conftest.s\"
3979 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3980 gcc_cv_as_dwarf2_debug_line,
3981 [elf,2,11,0],, [$conftest_s],
3982 [if test x$gcc_cv_objdump != x \
3983 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3984 | grep debug_line > /dev/null 2>&1; then
3985 gcc_cv_as_dwarf2_debug_line=yes
3988 # The .debug_line file table must be in the exact order that
3989 # we specified the files, since these indices are also used
3990 # by DW_AT_decl_file. Approximate this test by testing if
3991 # the assembler bitches if the same index is assigned twice.
3992 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3993 gcc_cv_as_dwarf2_file_buggy,,,
3997 if test $gcc_cv_as_dwarf2_debug_line = yes \
3998 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3999 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4000 [Define if your assembler supports dwarf2 .file/.loc directives,
4001 and preserves file table indices exactly as given.])
4004 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4005 gcc_cv_as_gdwarf2_flag,
4006 [elf,2,11,0], [--gdwarf2], [$insn],,
4007 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4008 [Define if your assembler supports the --gdwarf2 option.])])
4010 gcc_GAS_CHECK_FEATURE([--gstabs option],
4011 gcc_cv_as_gstabs_flag,
4012 [elf,2,11,0], [--gstabs], [$insn],
4013 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4014 # and warns about it, but still exits successfully. So check for
4016 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4018 else gcc_cv_as_gstabs_flag=yes
4020 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4021 [Define if your assembler supports the --gstabs option.])])
4023 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4024 gcc_cv_as_debug_prefix_map_flag,
4025 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4026 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4027 [Define if your assembler supports the --debug-prefix-map option.])])
4030 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4033 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4034 [Define if your assembler supports .lcomm with an alignment field.])])
4036 AC_ARG_ENABLE(gnu-unique-object,
4037 [AS_HELP_STRING([--enable-gnu-unique-object],
4038 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4039 [case $enable_gnu_unique_object in
4041 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4042 Valid choices are 'yes' and 'no'.]) ;;
4044 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4046 [.type foo, @gnu_unique_object],,
4047 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4048 [[if test x$host = x$build -a x$host = x$target &&
4049 ldd --version 2>/dev/null &&
4050 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4051 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4052 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4053 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4054 if test "$glibcnum" -ge 2011 ; then
4055 enable_gnu_unique_object=yes
4058 if test x$enable_gnu_unique_object = xyes; then
4059 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4060 [Define if your assembler supports @gnu_unique_object.])
4063 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4064 [gcc_cv_as_line_zero],
4065 [gcc_cv_as_line_zero=no
4066 if test $in_tree_gas = yes; then
4067 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4068 elif test "x$gcc_cv_as" != x; then
4069 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4070 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4071 test "x`cat conftest.out`" = x
4073 gcc_cv_as_line_zero=yes
4075 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4076 cat conftest.s >&AS_MESSAGE_LOG_FD
4077 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4078 cat conftest.out >&AS_MESSAGE_LOG_FD
4080 rm -f conftest.o conftest.s conftest.out
4082 if test "x$gcc_cv_as_line_zero" = xyes; then
4083 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4084 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4087 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4088 gcc_cv_ld_eh_frame_hdr=no
4089 if test $in_tree_ld = yes ; then
4090 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4091 && test $in_tree_ld_is_elf = yes; then
4092 gcc_cv_ld_eh_frame_hdr=yes
4094 elif test x$gcc_cv_ld != x; then
4095 if echo "$ld_ver" | grep GNU > /dev/null; then
4096 # Check if linker supports --eh-frame-hdr option
4097 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4098 gcc_cv_ld_eh_frame_hdr=yes
4103 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4104 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4105 gcc_cv_ld_eh_frame_hdr=yes
4111 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4112 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4113 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4114 [Define if your linker supports .eh_frame_hdr.])
4116 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4118 AC_MSG_CHECKING(linker position independent executable support)
4120 if test $in_tree_ld = yes ; then
4121 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4122 && test $in_tree_ld_is_elf = yes; then
4125 elif test x$gcc_cv_ld != x; then
4126 # Check if linker supports -pie option
4127 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4131 if test x"$gcc_cv_ld_pie" = xyes; then
4132 AC_DEFINE(HAVE_LD_PIE, 1,
4133 [Define if your linker supports -pie option.])
4135 AC_MSG_RESULT($gcc_cv_ld_pie)
4137 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4138 gcc_cv_ld_eh_gc_sections=no
4139 if test $in_tree_ld = yes ; then
4140 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4141 && test $in_tree_ld_is_elf = yes; then
4142 gcc_cv_ld_eh_gc_sections=yes
4144 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4145 cat > conftest.s <<EOF
4148 .type _start, @function
4151 .size _start, .-_start
4152 .section .text.foo,"ax",@progbits
4153 .type foo, @function
4157 .section .gcc_except_table.foo,"a",@progbits
4160 .section .eh_frame,"a",@progbits
4163 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4164 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4165 | grep "gc-sections option ignored" > /dev/null; then
4166 gcc_cv_ld_eh_gc_sections=no
4167 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4168 | grep gcc_except_table > /dev/null; then
4169 gcc_cv_ld_eh_gc_sections=yes
4170 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4171 if test x$gcc_cv_as_comdat_group != xyes; then
4172 gcc_cv_ld_eh_gc_sections=no
4173 cat > conftest.s <<EOF
4176 .type _start, @function
4179 .size _start, .-_start
4180 .section .gnu.linkonce.t.foo,"ax",@progbits
4181 .type foo, @function
4185 .section .gcc_except_table.foo,"a",@progbits
4188 .section .eh_frame,"a",@progbits
4191 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4192 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4193 | grep "gc-sections option ignored" > /dev/null; then
4194 gcc_cv_ld_eh_gc_sections=no
4195 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4196 | grep gcc_except_table > /dev/null; then
4197 gcc_cv_ld_eh_gc_sections=yes
4203 rm -f conftest.s conftest.o conftest
4207 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4208 gcc_cv_ld_eh_gc_sections=no
4211 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4212 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4213 [Define if your linker supports garbage collection of
4214 sections in presence of EH frames.])
4216 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4218 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4219 gcc_cv_ld_eh_gc_sections_bug=no
4220 if test $in_tree_ld = yes ; then
4221 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4222 && test $in_tree_ld_is_elf = yes; then
4223 gcc_cv_ld_eh_gc_sections_bug=yes
4225 elif test x$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
4226 gcc_cv_ld_eh_gc_sections_bug=yes
4227 cat > conftest.s <<EOF
4230 .type _start, @function
4233 .size _start, .-_start
4234 .section .text.startup.foo,"ax",@progbits
4235 .type foo, @function
4239 .section .gcc_except_table.foo,"a",@progbits
4242 .section .eh_frame,"a",@progbits
4245 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4246 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4247 | grep "gc-sections option ignored" > /dev/null; then
4249 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4250 | grep gcc_except_table > /dev/null; then
4251 gcc_cv_ld_eh_gc_sections_bug=no
4254 rm -f conftest.s conftest.o conftest
4256 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4257 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4258 [Define if your linker has buggy garbage collection of
4259 sections support when .text.startup.foo like sections are used.])
4261 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4267 AC_CACHE_CHECK(linker --as-needed support,
4268 gcc_cv_ld_as_needed,
4269 [gcc_cv_ld_as_needed=no
4270 if test $in_tree_ld = yes ; then
4271 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4272 && test $in_tree_ld_is_elf = yes; then
4273 gcc_cv_ld_as_needed=yes
4275 elif test x$gcc_cv_ld != x; then
4276 # Check if linker supports --as-needed and --no-as-needed options
4277 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4278 gcc_cv_ld_as_needed=yes
4282 if test x"$gcc_cv_ld_as_needed" = xyes; then
4283 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4284 [Define if your linker supports --as-needed and --no-as-needed options.])
4287 case "$target:$tm_file" in
4288 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4289 AC_CACHE_CHECK(linker support for omitting dot symbols,
4290 gcc_cv_ld_no_dot_syms,
4291 [gcc_cv_ld_no_dot_syms=no
4292 if test $in_tree_ld = yes ; then
4293 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4294 gcc_cv_ld_no_dot_syms=yes
4296 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4297 cat > conftest1.s <<EOF
4301 cat > conftest2.s <<EOF
4302 .section ".opd","aw"
4307 .quad .LEfoo,.TOC.@tocbase,0
4313 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4314 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4315 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4316 gcc_cv_ld_no_dot_syms=yes
4318 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4321 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4322 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4323 [Define if your PowerPC64 linker only needs function descriptor syms.])
4326 AC_CACHE_CHECK(linker large toc support,
4327 gcc_cv_ld_large_toc,
4328 [gcc_cv_ld_large_toc=no
4329 if test $in_tree_ld = yes ; then
4330 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4331 gcc_cv_ld_large_toc=yes
4333 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4334 cat > conftest.s <<EOF
4335 .section ".tbss","awT",@nobits
4341 addis 9,13,ie0@got@tprel@ha
4342 ld 9,ie0@got@tprel@l(9)
4344 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4345 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4346 gcc_cv_ld_large_toc=yes
4348 rm -f conftest conftest.o conftest.s
4351 if test x"$gcc_cv_ld_large_toc" = xyes; then
4352 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4353 [Define if your PowerPC64 linker supports a large TOC.])
4358 AC_CACHE_CHECK(linker --build-id support,
4360 [gcc_cv_ld_buildid=no
4361 if test $in_tree_ld = yes ; then
4362 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4363 "$gcc_cv_gld_minor_version" -ge 18 -o \
4364 "$gcc_cv_gld_major_version" -gt 2 \
4365 && test $in_tree_ld_is_elf = yes; then
4366 gcc_cv_ld_buildid=yes
4368 elif test x$gcc_cv_ld != x; then
4369 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4370 gcc_cv_ld_buildid=yes
4373 if test x"$gcc_cv_ld_buildid" = xyes; then
4374 AC_DEFINE(HAVE_LD_BUILDID, 1,
4375 [Define if your linker supports --build-id.])
4378 AC_ARG_ENABLE(linker-build-id,
4379 [AS_HELP_STRING([--enable-linker-build-id],
4380 [compiler will always pass --build-id to linker])],
4382 enable_linker_build_id=no)
4384 if test x"$enable_linker_build_id" = xyes; then
4385 if test x"$gcc_cv_ld_buildid" = xyes; then
4386 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4387 [Define if gcc should always pass --build-id to linker.])
4389 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4393 # In binutils 2.21, GNU ld gained support for new emulations fully
4394 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4395 AC_CACHE_CHECK(linker *_sol2 emulation support,
4396 gcc_cv_ld_sol2_emulation,
4397 [gcc_cv_ld_sol2_emulation=no
4398 if test $in_tree_ld = yes ; then
4399 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4400 "$gcc_cv_gld_minor_version" -ge 21 -o \
4401 "$gcc_cv_gld_major_version" -gt 2 \
4402 && test $in_tree_ld_is_elf = yes; then
4403 gcc_cv_ld_sol2_emulation=yes
4405 elif test x$gcc_cv_ld != x; then
4406 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4407 grep _sol2 > /dev/null; then
4408 gcc_cv_ld_sol2_emulation=yes
4411 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4412 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4413 [Define if your linker supports the *_sol2 emulations.])
4416 AC_CACHE_CHECK(linker --sysroot support,
4418 [gcc_cv_ld_sysroot=no
4419 if test $in_tree_ld = yes ; then
4420 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4421 gcc_cv_ld_sysroot=yes
4423 elif test x$gcc_cv_ld != x; then
4424 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4425 gcc_cv_ld_sysroot=yes
4428 if test x"$gcc_cv_ld_sysroot" = xyes; then
4429 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4430 [Define if your linker supports --sysroot.])
4433 if test x$with_sysroot = x && test x$host = x$target \
4434 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4435 && test "$prefix" != "NONE"; then
4436 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4437 [Define to PREFIX/include if cpp should also search that directory.])
4440 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4441 if test "x$with_headers" != x; then
4442 target_header_dir=$with_headers
4443 elif test "x$with_sysroot" = x; then
4444 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4445 elif test "x$with_build_sysroot" != "x"; then
4446 target_header_dir="${with_build_sysroot}/usr/include"
4447 elif test "x$with_sysroot" = xyes; then
4448 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4450 target_header_dir="${with_sysroot}/usr/include"
4453 target_header_dir=/usr/include
4456 # Test for stack protector support in target C library.
4457 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4458 gcc_cv_libc_provides_ssp,
4459 [gcc_cv_libc_provides_ssp=no
4461 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4462 [# glibc 2.4 and later provides __stack_chk_fail and
4463 # either __stack_chk_guard, or TLS access to stack guard canary.
4464 if test -f $target_header_dir/features.h \
4465 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4466 $target_header_dir/features.h > /dev/null; then
4467 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4468 $target_header_dir/features.h > /dev/null; then
4469 gcc_cv_libc_provides_ssp=yes
4470 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4471 $target_header_dir/features.h > /dev/null \
4472 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4473 $target_header_dir/features.h > /dev/null; then
4474 gcc_cv_libc_provides_ssp=yes
4475 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4476 $target_header_dir/features.h > /dev/null && \
4477 test -f $target_header_dir/bits/uClibc_config.h && \
4478 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4479 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4480 gcc_cv_libc_provides_ssp=yes
4485 # Avoid complicated tests (see
4486 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4487 # simply assert that glibc does provide this, which is true for all
4488 # realistically usable GNU/Hurd configurations.
4489 gcc_cv_libc_provides_ssp=yes;;
4490 *-*-darwin* | *-*-freebsd*)
4491 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4492 [echo "no __stack_chk_fail on this target"])
4494 *) gcc_cv_libc_provides_ssp=no ;;
4497 if test x$gcc_cv_libc_provides_ssp = xyes; then
4498 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4499 [Define if your target C library provides stack protector support])
4502 # Test for <sys/sdt.h> on the target.
4503 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4504 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4506 if test -f $target_header_dir/sys/sdt.h; then
4507 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4508 [Define if your target C library provides sys/sdt.h])
4510 AC_MSG_RESULT($have_sys_sdt_h)
4512 # Check if TFmode long double should be used by default or not.
4513 # Some glibc targets used DFmode long double, but with glibc 2.4
4514 # and later they can use TFmode.
4516 powerpc*-*-linux* | \
4520 AC_ARG_WITH(long-double-128,
4521 [AS_HELP_STRING([--with-long-double-128],
4522 [use 128-bit long double by default])],
4523 gcc_cv_target_ldbl128="$with_long_double_128",
4524 [[gcc_cv_target_ldbl128=no
4525 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4526 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4527 && gcc_cv_target_ldbl128=yes
4531 if test x$gcc_cv_target_ldbl128 = xyes; then
4532 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4533 [Define if TFmode long double should be the default])
4536 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4537 gcc_cv_target_dl_iterate_phdr=unknown
4540 # <link.h> needs both a dl_iterate_phdr declaration and support for
4541 # compilation with largefile support.
4542 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4543 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4544 gcc_cv_target_dl_iterate_phdr=yes
4546 gcc_cv_target_dl_iterate_phdr=no
4550 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4551 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4552 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4553 [Define if your target C library provides the `dl_iterate_phdr' function.])
4555 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4557 # Find out what GC implementation we want, or may, use.
4559 [AS_HELP_STRING([--with-gc={page,zone}],
4560 [choose the garbage collection mechanism to use
4561 with the compiler])],
4568 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4571 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4576 echo "Using $GGC for garbage collection."
4578 # Libraries to use on the host. This will normally be set by the top
4579 # level Makefile. Here we simply capture the value for our Makefile.
4580 if test -z "${HOST_LIBS+set}"; then
4585 # Use the system's zlib library.
4587 zlibinc="-I\$(srcdir)/../zlib"
4588 AC_ARG_WITH(system-zlib,
4589 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4596 dnl Very limited version of automake's enable-maintainer-mode
4598 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4599 dnl maintainer-mode is disabled by default
4600 AC_ARG_ENABLE(maintainer-mode,
4601 [AS_HELP_STRING([--enable-maintainer-mode],
4602 [enable make rules and dependencies not useful
4603 (and sometimes confusing) to the casual installer])],
4604 maintainer_mode=$enableval,
4607 AC_MSG_RESULT($maintainer_mode)
4609 if test "$maintainer_mode" = "yes"; then
4620 # Make empty files to contain the specs and options for each language.
4621 # Then add #include lines to for a compiler that has specs and/or options.
4627 # These (without "all_") are set in each config-lang.in.
4628 # `language' must be a single word so is spelled singularly.
4631 all_outputs='Makefile'
4632 # List of language makefile fragments.
4634 # Additional files for gengtype
4635 all_gtfiles="$target_gtfiles"
4637 # These are the languages that are set in --enable-languages,
4638 # and are available in the GCC tree.
4639 all_selected_languages=
4641 # Add the language fragments.
4642 # Languages are added via two mechanisms. Some information must be
4643 # recorded in makefile variables, these are defined in config-lang.in.
4644 # We accumulate them and plug them into the main Makefile.
4645 # The other mechanism is a set of hooks for each of the main targets
4646 # like `clean', `install', etc.
4648 language_hooks="Make-hooks"
4650 for lang in ${srcdir}/*/config-lang.in
4653 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4655 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4656 if test "x$lang_alias" = x
4658 echo "$lang doesn't set \$language." 1>&2
4661 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4662 subdirs="$subdirs $subdir"
4664 # $gcc_subdir is where the gcc integration files are to be found
4665 # for a language, both for internal compiler purposes (compiler
4666 # sources implementing front-end to GCC tree converters), and for
4667 # build infrastructure purposes (Make-lang.in, etc.)
4669 # This will be <subdir> (relative to $srcdir) if a line like
4670 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4671 # is found in <langdir>/config-lang.in, and will remain <langdir>
4674 # Except for the language alias (fetched above), the regular
4675 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4676 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4677 # only this and the language alias.
4679 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4680 if [ "$gcc_subdir" = "" ]; then
4681 gcc_subdir="$subdir"
4684 case ",$enable_languages," in
4686 all_selected_languages="$all_selected_languages $lang_alias"
4687 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4688 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4700 . ${srcdir}/$gcc_subdir/config-lang.in
4701 if test "x$language" = x
4703 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4708 case ",$enable_languages," in
4711 for i in $subdir_requires; do
4712 test -f "${srcdir}/$i/config-lang.in" && continue
4720 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4721 if test -f $srcdir/$gcc_subdir/lang.opt; then
4722 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4723 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4725 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4726 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4728 all_languages="$all_languages $language"
4729 all_compilers="$all_compilers $compilers"
4730 all_outputs="$all_outputs $outputs"
4731 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4732 case ",$enable_languages," in
4734 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4736 AC_SUBST(enable_lto)
4742 # Pick up gtfiles for c
4744 . ${srcdir}/c-config-lang.in
4745 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4748 for language in $all_selected_languages
4750 check_languages="$check_languages check-$language"
4753 # We link each language in with a set of hooks, reached indirectly via
4754 # lang.${target}. Only do so for selected languages.
4758 target_list="all.cross start.encap rest.encap tags \
4759 install-common install-man install-info install-pdf install-html dvi \
4760 pdf html uninstall info man srcextra srcman srcinfo \
4761 mostlyclean clean distclean maintainer-clean install-plugin"
4763 for t in $target_list
4766 for lang in $all_selected_languages
4770 echo "lang.$t: $x" >> Make-hooks
4774 # Option include files
4777 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4778 option_includes="option-includes.mk"
4779 AC_SUBST_FILE(option_includes)
4787 echo "dir ." > .gdbinit
4788 echo "dir ${srcdir}" >> .gdbinit
4789 if test x$gdb_needs_out_file_path = xyes
4791 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4793 if test "x$subdirs" != x; then
4796 echo "dir ${srcdir}/$s" >> .gdbinit
4799 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4801 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4802 AC_SUBST(gcc_tooldir)
4805 # Find a directory in which to install a shared libgcc.
4807 AC_ARG_ENABLE(version-specific-runtime-libs,
4808 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4809 [specify that runtime libraries should be
4810 installed in a compiler-specific directory])])
4812 AC_ARG_WITH(slibdir,
4813 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4814 slibdir="$with_slibdir",
4815 if test "${enable_version_specific_runtime_libs+set}" = set; then
4816 slibdir='$(libsubdir)'
4817 elif test "$host" != "$target"; then
4818 slibdir='$(build_tooldir)/lib'
4824 # Substitute configuration variables
4827 AC_SUBST(all_compilers)
4828 AC_SUBST(all_gtfiles)
4829 AC_SUBST(all_lang_makefrags)
4830 AC_SUBST(all_languages)
4831 AC_SUBST(all_selected_languages)
4832 AC_SUBST(build_exeext)
4833 AC_SUBST(build_install_headers_dir)
4834 AC_SUBST(build_xm_file_list)
4835 AC_SUBST(build_xm_include_list)
4836 AC_SUBST(build_xm_defines)
4837 AC_SUBST(build_file_translate)
4838 AC_SUBST(check_languages)
4839 AC_SUBST(cpp_install_dir)
4840 AC_SUBST(xmake_file)
4841 AC_SUBST(tmake_file)
4842 AC_SUBST(TM_ENDIAN_CONFIG)
4843 AC_SUBST(TM_MULTILIB_CONFIG)
4844 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4845 AC_SUBST(extra_gcc_objs)
4846 AC_SUBST(user_headers_inc_next_pre)
4847 AC_SUBST(user_headers_inc_next_post)
4848 AC_SUBST(extra_headers_list)
4849 AC_SUBST(extra_objs)
4850 AC_SUBST(extra_parts)
4851 AC_SUBST(extra_passes)
4852 AC_SUBST(extra_programs)
4853 AC_SUBST(float_h_file)
4854 AC_SUBST(gcc_config_arguments)
4855 AC_SUBST(gcc_gxx_include_dir)
4856 AC_SUBST(host_exeext)
4857 AC_SUBST(host_xm_file_list)
4858 AC_SUBST(host_xm_include_list)
4859 AC_SUBST(host_xm_defines)
4860 AC_SUBST(out_host_hook_obj)
4862 AC_SUBST(lang_opt_files)
4863 AC_SUBST(lang_specs_files)
4864 AC_SUBST(lang_tree_files)
4865 AC_SUBST(local_prefix)
4867 AC_SUBST(objc_boehm_gc)
4869 AC_SUBST(out_object_file)
4870 AC_SUBST(thread_file)
4871 AC_SUBST(tm_file_list)
4872 AC_SUBST(tm_include_list)
4873 AC_SUBST(tm_defines)
4874 AC_SUBST(libgcc_tm_file_list)
4875 AC_SUBST(libgcc_tm_include_list)
4876 AC_SUBST(tm_p_file_list)
4877 AC_SUBST(tm_p_include_list)
4878 AC_SUBST(xm_file_list)
4879 AC_SUBST(xm_include_list)
4880 AC_SUBST(xm_defines)
4881 AC_SUBST(use_gcc_stdint)
4882 AC_SUBST(c_target_objs)
4883 AC_SUBST(cxx_target_objs)
4884 AC_SUBST(fortran_target_objs)
4885 AC_SUBST(target_cpu_default)
4887 AC_SUBST_FILE(language_hooks)
4890 if test x${build} = x${host} ; then
4891 if test x${host} = x${target} ; then
4892 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4894 echo "Links are now set up to build a cross-compiler" 1>&2
4895 echo " from ${host} to ${target}." 1>&2
4898 if test x${host} = x${target} ; then
4899 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4900 echo " for ${target}." 1>&2
4902 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4903 echo " from ${host} to ${target}." 1>&2
4907 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4908 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4910 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4911 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4913 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4914 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4915 if test "x${CLOOGLIBS}" != "x" ; then
4916 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4919 # Check for plugin support
4920 AC_ARG_ENABLE(plugin,
4921 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4922 enable_plugin=$enableval,
4923 enable_plugin=yes; default_plugin=yes)
4929 if test x$build = x$host; then
4930 export_sym_check="nm${exeext} -g"
4931 elif test x$host = x$target; then
4932 export_sym_check="$gcc_cv_nm -g"
4938 if test x$build = x$host; then
4939 export_sym_check="objdump${exeext} -T"
4940 elif test x$host = x$target; then
4941 export_sym_check="$gcc_cv_objdump -T"
4948 if test x"$enable_plugin" = x"yes"; then
4950 AC_MSG_CHECKING([for exported symbols])
4951 if test "x$export_sym_check" != x; then
4952 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4953 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4954 if $export_sym_check conftest | grep foobar > /dev/null; then
4955 : # No need to use a flag
4956 AC_MSG_RESULT([yes])
4958 AC_MSG_RESULT([yes])
4959 AC_MSG_CHECKING([for -rdynamic])
4960 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4961 if $export_sym_check conftest | grep foobar > /dev/null; then
4963 pluginlibs="-rdynamic"
4968 AC_MSG_RESULT([$plugin_rdynamic])
4971 AC_MSG_RESULT([unable to check])
4976 AC_SEARCH_LIBS([dlopen], [dl])
4977 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4978 pluginlibs="$pluginlibs -ldl"
4982 # Check that we can build shared objects with -fPIC -shared
4983 saved_LDFLAGS="$LDFLAGS"
4984 saved_CFLAGS="$CFLAGS"
4987 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4988 CFLAGS="$CFLAGS -fPIC"
4989 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4992 CFLAGS="$CFLAGS -fPIC"
4993 LDFLAGS="$LDFLAGS -fPIC -shared"
4996 AC_MSG_CHECKING([for -fPIC -shared])
4998 [extern int X;],[return X == 0;],
4999 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5000 [AC_MSG_RESULT([no]); have_pic_shared=no])
5001 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5005 LDFLAGS="$saved_LDFLAGS"
5006 CFLAGS="$saved_CFLAGS"
5008 # If plugin support had been requested but not available, fail.
5009 if test x"$enable_plugin" = x"no" ; then
5010 if test x"$default_plugin" != x"yes"; then
5012 Building GCC with plugin support requires a host that supports
5013 -fPIC, -shared, -ldl and -rdynamic.])
5018 AC_SUBST(pluginlibs)
5019 AC_SUBST(enable_plugin)
5020 if test x"$enable_plugin" = x"yes"; then
5021 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5025 AC_ARG_ENABLE(libquadmath-support,
5026 [AS_HELP_STRING([--disable-libquadmath-support],
5027 [disable libquadmath support for Fortran])],
5028 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5029 ENABLE_LIBQUADMATH_SUPPORT=yes)
5030 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5031 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5032 [Define to 1 to enable libquadmath support])
5036 # Specify what hash style to use by default.
5037 AC_ARG_WITH([linker-hash-style],
5038 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5039 [specify the linker hash style])],
5040 [case x"$withval" in
5042 LINKER_HASH_STYLE=sysv
5045 LINKER_HASH_STYLE=gnu
5048 LINKER_HASH_STYLE=both
5051 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5054 [LINKER_HASH_STYLE=''])
5055 if test x"${LINKER_HASH_STYLE}" != x; then
5056 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5057 [The linker hash style])
5060 # Configure the subdirectories
5061 # AC_CONFIG_SUBDIRS($subdirs)
5063 # Create the Makefile
5064 # and configure language subdirectories
5065 AC_CONFIG_FILES($all_outputs)
5067 AC_CONFIG_COMMANDS([default],
5069 case ${CONFIG_HEADERS} in
5070 *auto-host.h:config.in*)
5073 # Make sure all the subdirs exist.
5074 for d in $subdirs doc build c-family
5076 test -d $d || mkdir $d
5079 [subdirs='$subdirs'])