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
1631 common_out_object_file=`basename $common_out_file .c`.o
1633 tm_file_list="options.h"
1634 tm_include_list="options.h insn-constants.h"
1635 for f in $tm_file; do
1638 f=`echo $f | sed 's/^..//'`
1639 tm_file_list="${tm_file_list} $f"
1640 tm_include_list="${tm_include_list} $f"
1643 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1644 tm_include_list="${tm_include_list} $f"
1647 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1648 tm_include_list="${tm_include_list} config/$f"
1653 libgcc_tm_file_list=
1654 libgcc_tm_include_list=
1655 for f in $libgcc_tm_file; do
1656 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1657 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1662 for f in $tm_p_file; do
1665 tm_p_file_list="${tm_p_file_list} $f"
1666 tm_p_include_list="${tm_p_include_list} $f"
1669 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1670 tm_p_include_list="${tm_p_include_list} config/$f"
1676 for f in $xm_file; do
1679 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1680 xm_include_list="${xm_include_list} $f"
1683 xm_file_list="${xm_file_list} $f"
1684 xm_include_list="${xm_include_list} $f"
1687 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1688 xm_include_list="${xm_include_list} config/$f"
1694 host_xm_include_list=
1695 for f in $host_xm_file; do
1698 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1699 host_xm_include_list="${host_xm_include_list} $f"
1702 host_xm_file_list="${host_xm_file_list} $f"
1703 host_xm_include_list="${host_xm_include_list} $f"
1706 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1707 host_xm_include_list="${host_xm_include_list} config/$f"
1713 for f in $build_xm_file; do
1716 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1717 build_xm_include_list="${build_xm_include_list} $f"
1719 auto-build.h | auto-host.h )
1720 build_xm_file_list="${build_xm_file_list} $f"
1721 build_xm_include_list="${build_xm_include_list} $f"
1724 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1725 build_xm_include_list="${build_xm_include_list} config/$f"
1730 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1731 # cross-compiler which does not use the native headers and libraries.
1732 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1733 CROSS= AC_SUBST(CROSS)
1734 ALL=all.internal AC_SUBST(ALL)
1735 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1737 if test "x$with_build_sysroot" != x; then
1738 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1740 # This value is used, even on a native system, because
1741 # CROSS_SYSTEM_HEADER_DIR is just
1742 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1743 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1746 if test x$host != x$target
1748 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1750 SYSTEM_HEADER_DIR=$build_system_header_dir
1751 case "$host","$target" in
1752 # Darwin crosses can use the host system's libraries and headers,
1753 # because of the fat library support. Of course, it must be the
1754 # same version of Darwin on both sides. Allow the user to
1755 # just say --target=foo-darwin without a version number to mean
1756 # "the version on this system".
1757 *-*-darwin*,*-*-darwin*)
1758 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1759 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1760 if test $hostos = $targetos -o $targetos = darwin ; then
1762 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1767 i?86-*-*,x86_64-*-* \
1768 | powerpc*-*-*,powerpc64*-*-*)
1769 CROSS="$CROSS -DNATIVE_CROSS" ;;
1774 if test "x$with_headers" = x; then
1781 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1782 SYSTEM_HEADER_DIR=$build_system_header_dir
1785 # If this is a cross-compiler that does not
1786 # have its own set of headers then define
1789 # If this is using newlib, without having the headers available now,
1790 # then define inhibit_libc in LIBGCC2_CFLAGS.
1791 # This prevents libgcc2 from containing any code which requires libc
1793 : ${inhibit_libc=false}
1794 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1795 test x$with_newlib = xyes ; } &&
1796 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1799 AC_SUBST(inhibit_libc)
1801 # When building gcc with a cross-compiler, we need to adjust things so
1802 # that the generator programs are still built with the native compiler.
1803 # Also, we cannot run fixincludes.
1805 # These are the normal (build=host) settings:
1806 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1807 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1808 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1809 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1811 # And these apply if build != host, or we are generating coverage data
1812 if test x$build != x$host || test "x$coverage_flags" != x
1814 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1815 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1818 # Expand extra_headers to include complete path.
1819 # This substitutes for lots of t-* files.
1821 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1822 for file in ${extra_headers} ; do
1823 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1826 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1827 if test x"$use_gcc_tgmath" = xyes
1828 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1831 # Define collect2 in Makefile.
1832 case $host_can_use_collect2 in
1834 *) collect2='collect2$(exeext)' ;;
1836 AC_SUBST([collect2])
1838 # Add a definition of USE_COLLECT2 if system wants one.
1839 case $use_collect2 in
1840 no) use_collect2= ;;
1843 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1844 xm_defines="${xm_defines} USE_COLLECT2"
1845 case $host_can_use_collect2 in
1847 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1853 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1854 [Define to the name of the LTO plugin DSO that must be
1855 passed to the linker's -plugin=LIB option.])
1857 # ---------------------------
1858 # Assembler & linker features
1859 # ---------------------------
1861 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1862 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1863 # However when ld-new is first executed from the build tree, libtool will
1864 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1865 # to the build tree. While doing this we need to use the previous-stage
1866 # linker, or we have an infinite loop. The presence of a shell script as
1867 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1868 # the gcc/collect-ld script. So we need to know how libtool works, or
1869 # exec-tool will fail.
1871 m4_defun([_LT_CONFIG_COMMANDS], [])
1874 AC_SUBST(enable_fast_install)
1876 # Identify the assembler which will work hand-in-glove with the newly
1877 # built GCC, so that we can examine its features. This is the assembler
1878 # which will be driven by the driver program.
1880 # If build != host, and we aren't building gas in-tree, we identify a
1881 # build->target assembler and hope that it will have the same features
1882 # as the host->target assembler we'll be using.
1883 gcc_cv_gas_major_version=
1884 gcc_cv_gas_minor_version=
1885 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1887 m4_pattern_allow([AS_FOR_TARGET])dnl
1888 AS_VAR_SET_IF(gcc_cv_as,, [
1889 if test -x "$DEFAULT_ASSEMBLER"; then
1890 gcc_cv_as="$DEFAULT_ASSEMBLER"
1891 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1892 && test -f ../gas/Makefile \
1893 && test x$build = x$host; then
1894 gcc_cv_as=../gas/as-new$build_exeext
1895 elif test -x as$build_exeext; then
1896 # Build using assembler in the current directory.
1897 gcc_cv_as=./as$build_exeext
1898 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1899 gcc_cv_as="$AS_FOR_TARGET"
1901 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1904 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1905 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1906 case "$ORIGINAL_AS_FOR_TARGET" in
1907 ./as | ./as$build_exeext) ;;
1908 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1911 AC_MSG_CHECKING(what assembler to use)
1912 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1913 # Single tree build which includes gas. We want to prefer it
1914 # over whatever linker top-level may have detected, since
1915 # we'll use what we're building after installation anyway.
1916 AC_MSG_RESULT(newly built gas)
1918 _gcc_COMPUTE_GAS_VERSION
1919 in_tree_gas_is_elf=no
1920 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1921 || (grep 'obj_format = multi' ../gas/Makefile \
1922 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1924 in_tree_gas_is_elf=yes
1927 AC_MSG_RESULT($gcc_cv_as)
1931 # Identify the linker which will work hand-in-glove with the newly
1932 # built GCC, so that we can examine its features. This is the linker
1933 # which will be driven by the driver program.
1935 # If build != host, and we aren't building gas in-tree, we identify a
1936 # build->target linker and hope that it will have the same features
1937 # as the host->target linker we'll be using.
1938 gcc_cv_gld_major_version=
1939 gcc_cv_gld_minor_version=
1940 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1941 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1943 AS_VAR_SET_IF(gcc_cv_ld,, [
1944 if test -x "$DEFAULT_LINKER"; then
1945 gcc_cv_ld="$DEFAULT_LINKER"
1946 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1947 && test -f ../ld/Makefile \
1948 && test x$build = x$host; then
1949 gcc_cv_ld=../ld/ld-new$build_exeext
1950 elif test -x collect-ld$build_exeext; then
1951 # Build using linker in the current directory.
1952 gcc_cv_ld=./collect-ld$build_exeext
1953 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1954 gcc_cv_ld="$LD_FOR_TARGET"
1956 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1959 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1960 PLUGIN_LD=`basename $gcc_cv_ld`
1961 AC_ARG_WITH(plugin-ld,
1962 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1963 [if test x"$withval" != x; then
1964 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1965 PLUGIN_LD="$withval"
1967 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1968 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1970 # Check to see if we are using gold instead of ld
1971 AC_MSG_CHECKING(whether we are using gold)
1973 if test x$gcc_cv_ld != x; then
1974 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1975 | grep "GNU gold" > /dev/null; then
1979 AC_MSG_RESULT($ld_is_gold)
1981 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1982 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1983 case "$ORIGINAL_LD_FOR_TARGET" in
1984 ./collect-ld | ./collect-ld$build_exeext) ;;
1985 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1988 AC_MSG_CHECKING(what linker to use)
1989 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
1990 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
1991 # Single tree build which includes ld. We want to prefer it
1992 # over whatever linker top-level may have detected, since
1993 # we'll use what we're building after installation anyway.
1994 AC_MSG_RESULT(newly built ld)
1996 in_tree_ld_is_elf=no
1997 if (grep 'EMUL = .*elf' ../ld/Makefile \
1998 || grep 'EMUL = .*linux' ../ld/Makefile \
1999 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2000 in_tree_ld_is_elf=yes
2001 elif test "$ld_is_gold" = yes; then
2002 in_tree_ld_is_elf=yes
2004 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
2007 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2008 if test x$gcc_cv_gld_version != x; then
2012 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2013 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2016 AC_MSG_RESULT($gcc_cv_ld)
2020 # Figure out what nm we will be using.
2021 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2022 AS_VAR_SET_IF(gcc_cv_nm,, [
2023 if test -f $gcc_cv_binutils_srcdir/configure.in \
2024 && test -f ../binutils/Makefile \
2025 && test x$build = x$host; then
2026 gcc_cv_nm=../binutils/nm-new$build_exeext
2027 elif test -x nm$build_exeext; then
2028 gcc_cv_nm=./nm$build_exeext
2029 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2030 gcc_cv_nm="$NM_FOR_TARGET"
2032 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2035 AC_MSG_CHECKING(what nm to use)
2036 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2037 # Single tree build which includes binutils.
2038 AC_MSG_RESULT(newly built nm)
2041 AC_MSG_RESULT($gcc_cv_nm)
2045 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2046 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2047 case "$ORIGINAL_NM_FOR_TARGET" in
2048 ./nm | ./nm$build_exeext) ;;
2049 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2053 # Figure out what objdump we will be using.
2054 AS_VAR_SET_IF(gcc_cv_objdump,, [
2055 if test -f $gcc_cv_binutils_srcdir/configure.in \
2056 && test -f ../binutils/Makefile \
2057 && test x$build = x$host; then
2058 # Single tree build which includes binutils.
2059 gcc_cv_objdump=../binutils/objdump$build_exeext
2060 elif test -x objdump$build_exeext; then
2061 gcc_cv_objdump=./objdump$build_exeext
2062 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2063 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2065 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2068 AC_MSG_CHECKING(what objdump to use)
2069 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2070 # Single tree build which includes binutils.
2071 AC_MSG_RESULT(newly built objdump)
2072 elif test x$gcc_cv_objdump = x; then
2073 AC_MSG_RESULT(not found)
2075 AC_MSG_RESULT($gcc_cv_objdump)
2078 # Figure out what readelf we will be using.
2079 AS_VAR_SET_IF(gcc_cv_readelf,, [
2080 if test -f $gcc_cv_binutils_srcdir/configure.in \
2081 && test -f ../binutils/Makefile \
2082 && test x$build = x$host; then
2083 # Single tree build which includes binutils.
2084 gcc_cv_readelf=../binutils/readelf$build_exeext
2085 elif test -x readelf$build_exeext; then
2086 gcc_cv_readelf=./readelf$build_exeext
2088 AC_PATH_PROG(gcc_cv_readelf, readelf)
2091 AC_MSG_CHECKING(what readelf to use)
2092 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2093 # Single tree build which includes binutils.
2094 AC_MSG_RESULT(newly built readelf)
2095 elif test x$gcc_cv_readelf = x; then
2096 AC_MSG_RESULT(not found)
2098 AC_MSG_RESULT($gcc_cv_readelf)
2101 # Figure out what assembler alignment features are present.
2102 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2106 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2107 [Define if your assembler supports .balign and .p2align.])])
2109 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2112 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2113 [Define if your assembler supports specifying the maximum number
2114 of bytes to skip when using the GAS .p2align command.])])
2116 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2119 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2120 [Define if your assembler supports .literal16.])])
2122 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2124 [conftest_label1: .word 0
2126 conftest_label2: .word 0
2128 [if test x$gcc_cv_nm != x; then
2129 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2130 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2131 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2133 else gcc_cv_as_subsection_m1=yes
2135 rm -f conftest.nm1 conftest.nm2
2137 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2138 [Define if your assembler supports .subsection and .subsection -1 starts
2139 emitting at the beginning of your section.])])
2141 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2144 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2146 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2148 [ .weakref foobar, barfnot],,
2149 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2151 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2154 .NSUBSPA $CODE$,COMDAT],,
2155 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2157 # .hidden needs to be supported in both the assembler and the linker,
2158 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2159 # This is irritatingly difficult to feature test for; we have to check the
2160 # date string after the version number. If we've got an in-tree
2161 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2163 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2164 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2168 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2169 # STV_HIDDEN, so disable .hidden support if so.
2172 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2173 cat > conftest.s <<EOF
2180 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2181 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2182 grep '\.hidden default' > /dev/null; then
2185 gcc_cv_as_hidden=yes
2188 # Assume bug is present if objdump is missing.
2193 gcc_cv_as_hidden=yes
2198 # Darwin as has some visibility support, though with a different syntax.
2199 gcc_cv_as_hidden=yes
2203 # gnu_indirect_function type is an extension proposed at
2204 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2205 # selection of function implementation
2206 AC_ARG_ENABLE(gnu-indirect-function,
2207 [AS_HELP_STRING([--enable-gnu-indirect-function],
2208 [enable the use of the @gnu_indirect_function to glibc systems])],
2209 [case $enable_gnu_indirect_function in
2211 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2212 Valid choices are 'yes' and 'no'.]) ;;
2214 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2215 if test x$enable_gnu_indirect_function = xyes; then
2216 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2217 [Define if your system supports gnu indirect functions.])
2221 if test $in_tree_ld != yes ; then
2222 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2223 if echo "$ld_ver" | grep GNU > /dev/null; then
2224 if test x"$ld_is_gold" = xyes; then
2225 # GNU gold --version looks like this:
2227 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2229 # We extract the binutils version which is more familiar and specific
2230 # than the gold version.
2231 ld_vers=`echo $ld_ver | sed -n \
2232 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2234 # GNU ld --version looks like this:
2236 # GNU ld (GNU Binutils) 2.21.51.20110225
2237 ld_vers=`echo $ld_ver | sed -n \
2238 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2240 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2241 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2242 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2243 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2248 # Solaris 2 ld -V output looks like this for a regular version:
2250 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2252 # but test versions add stuff at the end:
2254 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2256 ld_ver=`$gcc_cv_ld -V 2>&1`
2257 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2258 ld_vers=`echo $ld_ver | sed -n \
2259 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2260 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2261 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2269 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2270 [[if test $in_tree_ld = yes ; then
2272 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2273 && test $in_tree_ld_is_elf = yes; then
2274 gcc_cv_ld_hidden=yes
2277 gcc_cv_ld_hidden=yes
2278 if test x"$ld_is_gold" = xyes; then
2280 elif echo "$ld_ver" | grep GNU > /dev/null; then
2281 if test 0"$ld_date" -lt 20020404; then
2282 if test -n "$ld_date"; then
2283 # If there was date string, but was earlier than 2002-04-04, fail
2285 elif test -z "$ld_vers"; then
2286 # If there was no date string nor ld version number, something is wrong
2289 test -z "$ld_vers_patch" && ld_vers_patch=0
2290 if test "$ld_vers_major" -lt 2; then
2292 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2293 gcc_cv_ld_hidden="no"
2294 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2302 # Darwin ld has some visibility support.
2303 gcc_cv_ld_hidden=yes
2305 hppa64*-*-hpux* | ia64*-*-hpux*)
2306 gcc_cv_ld_hidden=yes
2309 # .hidden support was backported to Solaris 8, starting with ld
2311 if test "$ld_vers_minor" -ge 276; then
2312 gcc_cv_ld_hidden=yes
2317 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2318 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2319 # .symbolic was only added in Solaris 9 12/02.
2320 gcc_cv_ld_hidden=yes
2328 libgcc_visibility=no
2329 AC_SUBST(libgcc_visibility)
2330 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2331 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2332 libgcc_visibility=yes
2333 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2334 [Define if your assembler and linker support .hidden.])
2337 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2338 gcc_cv_ld_ro_rw_mix=unknown
2339 if test $in_tree_ld = yes ; then
2340 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2341 && test $in_tree_ld_is_elf = yes; then
2342 gcc_cv_ld_ro_rw_mix=read-write
2344 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2345 echo '.section myfoosect, "a"' > conftest1.s
2346 echo '.section myfoosect, "aw"' > conftest2.s
2347 echo '.byte 1' >> conftest2.s
2348 echo '.section myfoosect, "a"' > conftest3.s
2349 echo '.byte 0' >> conftest3.s
2350 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2351 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2352 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2353 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2354 conftest2.o conftest3.o > /dev/null 2>&1; then
2355 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2356 | sed -e '/myfoosect/!d' -e N`
2357 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2358 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2359 gcc_cv_ld_ro_rw_mix=read-only
2361 gcc_cv_ld_ro_rw_mix=read-write
2366 rm -f conftest.* conftest[123].*
2369 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2370 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2371 [Define if your linker links a mix of read-only
2372 and read-write sections into a read-write section.])
2374 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2376 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2377 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2385 [[# GAS versions before 2.11 do not support uleb128,
2386 # despite appearing to.
2387 # ??? There exists an elf-specific test that will crash
2388 # the assembler. Perhaps it's better to figure out whether
2389 # arbitrary sections are supported and try the test.
2390 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2391 if echo "$as_ver" | grep GNU > /dev/null; then
2392 as_vers=`echo $as_ver | sed -n \
2393 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2394 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2395 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2396 if test $as_major -eq 2 && test $as_minor -lt 11
2398 else gcc_cv_as_leb128=yes
2401 [AC_DEFINE(HAVE_AS_LEB128, 1,
2402 [Define if your assembler supports .sleb128 and .uleb128.])])
2404 # Check if we have assembler support for unwind directives.
2405 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2412 .cfi_escape 1, 2, 3, 4, 5
2416 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2417 # read-only and read-write sections, we need to make sure that the
2418 # assembler used emits read-write .eh_frame sections.
2419 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2420 if test "x$gcc_cv_objdump" != x; then
2421 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2422 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2423 gcc_cv_as_cfi_directive=no
2426 i?86-*-solaris2.1[[0-9]]*)
2427 # On Solaris/x86, make sure that GCC and gas agree on using
2428 # read-only .eh_frame sections for 64-bit.
2429 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2430 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2431 sed -e /.eh_frame/!d -e N | \
2432 grep READONLY > /dev/null; then
2433 gcc_cv_as_cfi_directive=yes
2435 gcc_cv_as_cfi_directive=no
2439 gcc_cv_as_cfi_directive=yes
2444 # no objdump, err on the side of caution
2445 gcc_cv_as_cfi_directive=no
2448 gcc_cv_as_cfi_directive=yes
2452 gcc_cv_as_cfi_directive=yes
2455 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2456 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2460 .cfi_adjust_cfa_offset 64
2462 .cfi_adjust_cfa_offset 128
2465 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2466 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2467 gcc_cv_as_cfi_advance_working=yes
2471 # no objdump, err on the side of caution
2472 gcc_cv_as_cfi_advance_working=no
2474 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2475 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2476 [`if test $gcc_cv_as_cfi_directive = yes \
2477 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2478 [Define 0/1 if your assembler supports CFI directives.])
2480 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2481 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2482 gcc_cv_as_cfi_personality_directive, ,,
2485 .cfi_personality 0, symbol
2487 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2488 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2489 then echo 1; else echo 0; fi`],
2490 [Define 0/1 if your assembler supports .cfi_personality.])
2492 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2493 gcc_cv_as_cfi_sections_directive, ,,
2495 .cfi_sections .debug_frame, .eh_frame
2499 win32 | pe | cygwin* | mingw32* | uwin*)
2500 # Need to check that we generated the correct relocation for the
2501 # .debug_frame section. This was fixed for binutils 2.21.
2502 gcc_cv_as_cfi_sections_directive=no
2503 if test "x$gcc_cv_objdump" != x; then
2504 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2505 grep secrel > /dev/null; then
2506 gcc_cv_as_cfi_sections_directive=yes
2511 gcc_cv_as_cfi_sections_directive=yes
2514 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2515 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2516 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2517 then echo 1; else echo 0; fi`],
2518 [Define 0/1 if your assembler supports .cfi_sections.])
2520 # GAS versions up to and including 2.11.0 may mis-optimize
2522 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2530 .section .eh_frame,"aw",@progbits
2532 .4byte .LECIE1-.LSCIE1
2546 .4byte .LEFDE1-.LASFDE1
2548 .4byte .LASFDE1-__FRAME_BEGIN__
2556 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2557 cat > conftest.lit <<EOF
2558 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2559 0010 01000000 12000000 18000000 00000000 ................
2560 0020 08000000 04080000 0044 .........D @&t@
2562 cat > conftest.big <<EOF
2563 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2564 0010 00000001 00000012 00000018 00000000 ................
2565 0020 00000008 04000000 0844 .........D @&t@
2567 # If the assembler didn't choke, and we can objdump,
2568 # and we got the correct data, then succeed.
2569 # The text in the here-document typically retains its unix-style line
2570 # endings, while the output of objdump will use host line endings.
2571 # Therefore, use diff -b for the comparisons.
2572 if test x$gcc_cv_objdump != x \
2573 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2574 | tail -3 > conftest.got \
2575 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2576 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2578 gcc_cv_as_eh_frame=yes
2579 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2580 gcc_cv_as_eh_frame=buggy
2582 # Uh oh, what do we do now?
2583 gcc_cv_as_eh_frame=no
2586 if test $gcc_cv_as_eh_frame = buggy; then
2587 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2588 [Define if your assembler mis-optimizes .eh_frame data.])
2591 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2592 [elf,2,12,0], [--fatal-warnings],
2593 [.section .rodata.str, "aMS", @progbits, 1])
2594 if test $gcc_cv_as_shf_merge = no; then
2595 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2596 [elf,2,12,0], [--fatal-warnings],
2597 [.section .rodata.str, "aMS", %progbits, 1])
2599 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2600 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2601 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2603 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2604 gcc_cv_as_comdat_group,
2605 [elf,2,16,0], [--fatal-warnings],
2606 [.section .text,"axG",@progbits,.foo,comdat])
2607 if test $gcc_cv_as_comdat_group = yes; then
2608 gcc_cv_as_comdat_group_percent=no
2609 gcc_cv_as_comdat_group_group=no
2611 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2612 gcc_cv_as_comdat_group_percent,
2613 [elf,2,16,0], [--fatal-warnings],
2614 [.section .text,"axG",%progbits,.foo,comdat])
2615 if test $gcc_cv_as_comdat_group_percent = yes; then
2616 gcc_cv_as_comdat_group_group=no
2619 # Sun as uses a completely different syntax.
2624 .group foo,".text%foo",#comdat
2625 .section ".text%foo", #alloc,#execinstr,#progbits
2632 .group foo,.text%foo,#comdat
2633 .section .text%foo, "ax", @progbits
2639 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2640 gcc_cv_as_comdat_group_group,
2646 if test x"$ld_is_gold" = xyes; then
2648 elif test $in_tree_ld = yes ; then
2650 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2651 && test $in_tree_ld_is_elf = yes; then
2654 elif echo "$ld_ver" | grep GNU > /dev/null; then
2656 if test 0"$ld_date" -lt 20050308; then
2657 if test -n "$ld_date"; then
2658 # If there was date string, but was earlier than 2005-03-08, fail
2660 elif test "$ld_vers_major" -lt 2; then
2662 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2669 *-*-solaris2.1[1-9]*)
2671 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2672 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2675 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2676 # least ld version 1.2267.
2677 if test "$ld_vers_major" -gt 1; then
2679 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2681 elif test "$ld_vers_minor" -ge 2267; then
2686 # Assume linkers other than GNU ld don't support COMDAT group.
2692 # Allow overriding the automatic COMDAT group tests above.
2693 AC_ARG_ENABLE(comdat,
2694 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2695 [comdat_group="$enable_comdat"])
2696 if test $comdat_group = no; then
2697 gcc_cv_as_comdat_group=no
2698 gcc_cv_as_comdat_group_percent=no
2699 gcc_cv_as_comdat_group_group=no
2701 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2702 [`if test $gcc_cv_as_comdat_group = yes \
2703 || test $gcc_cv_as_comdat_group_percent = yes \
2704 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2705 [Define 0/1 if your assembler and linker support COMDAT groups.])
2707 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2708 gcc_cv_as_discriminator,
2712 .loc 1 1 0 discriminator 1],,
2713 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2714 [Define if your assembler supports the .loc discriminator sub-directive.])])
2716 # Thread-local storage - the check is heavily parameterized.
2725 .section ".tdata","awT",@progbits
2728 ldq $27,__tls_get_addr($29) !literal!1
2729 lda $16,foo($29) !tlsgd!1
2730 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2731 ldq $27,__tls_get_addr($29) !literal!2
2732 lda $16,foo($29) !tlsldm!2
2733 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2734 ldq $1,foo($29) !gotdtprel
2735 ldah $2,foo($29) !dtprelhi
2736 lda $3,foo($2) !dtprello
2737 lda $4,foo($29) !dtprel
2738 ldq $1,foo($29) !gottprel
2739 ldah $2,foo($29) !tprelhi
2740 lda $3,foo($2) !tprello
2741 lda $4,foo($29) !tprel'
2744 tls_as_opt=--fatal-warnings
2746 cris-*-*|crisv32-*-*)
2748 .section ".tdata","awT",@progbits
2755 tls_as_opt=--fatal-warnings
2759 .section ".tdata","awT",@progbits
2771 .section ".tdata","awT",@progbits
2775 addil LT%foo-$tls_gdidx$,gp
2776 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2779 addil LT%foo-$tls_ldidx$,gp
2781 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2782 addil LR%foo-$tls_dtpoff$,%ret0
2783 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2785 addil LT%foo-$tls_ieoff$,gp
2786 ldw RT%foo-$tls_ieoff$(%r1),%t2
2789 addil LR%foo-$tls_leoff$,%t1
2790 ldo RR%foo-$tls_leoff$(%r1),%t2'
2793 tls_as_opt=--fatal-warnings
2797 .section ".tdata","awT",%progbits
2810 i[34567]86-*-solaris2.*)
2812 tga_func=___tls_get_addr
2818 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2820 .section .tdata,"awt",@progbits'
2824 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2825 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2829 .section ".tdata","awT",@progbits'
2832 tls_as_opt="--fatal-warnings"
2834 conftest_s="$conftest_s
2838 leal foo@tlsgd(,%ebx,1), %eax
2839 leal foo@tlsldm(%ebx), %eax
2840 leal foo@dtpoff(%eax), %edx
2841 movl foo@gottpoff(%ebx), %eax
2842 subl foo@gottpoff(%ebx), %eax
2843 addl foo@gotntpoff(%ebx), %eax
2844 movl foo@indntpoff, %eax
2845 movl \$foo@tpoff, %eax
2846 subl \$foo@tpoff, %eax
2847 leal foo@ntpoff(%ecx), %eax"
2851 .section ".tdata","awT",@progbits
2855 leaq foo@TLSGD(%rip), %rdi
2856 leaq foo@TLSLD(%rip), %rdi
2857 leaq foo@DTPOFF(%rax), %rdx
2858 movq foo@GOTTPOFF(%rip), %rax
2859 movq $foo@TPOFF, %rax'
2862 tls_as_opt=--fatal-warnings
2866 .section ".tdata","awT",@progbits
2869 addl r16 = @ltoff(@dtpmod(foo#)), gp
2870 addl r17 = @ltoff(@dtprel(foo#)), gp
2871 addl r18 = @ltoff(@tprel(foo#)), gp
2872 addl r19 = @dtprel(foo#), gp
2873 adds r21 = @dtprel(foo#), r13
2874 movl r23 = @dtprel(foo#)
2875 addl r20 = @tprel(foo#), gp
2876 adds r22 = @tprel(foo#), r13
2877 movl r24 = @tprel(foo#)'
2880 tls_as_opt=--fatal-warnings
2884 .section .tdata,"awT",@progbits
2888 addiu $4, $28, %tlsgd(x)
2889 addiu $4, $28, %tlsldm(x)
2890 lui $4, %dtprel_hi(x)
2891 addiu $4, $4, %dtprel_lo(x)
2892 lw $4, %gottprel(x)($28)
2893 lui $4, %tprel_hi(x)
2894 addiu $4, $4, %tprel_lo(x)'
2897 tls_as_opt='-32 --fatal-warnings'
2901 .section .tdata,"awT",@progbits
2906 move.l x@TLSGD(%a5),%a0
2907 move.l x@TLSLDM(%a5),%a0
2908 move.l x@TLSLDO(%a5),%a0
2909 move.l x@TLSIE(%a5),%a0
2910 move.l x@TLSLE(%a5),%a0'
2913 tls_as_opt='--fatal-warnings'
2917 .section ".tdata","awT",@progbits
2925 addi 3,31,ld0@got@tlsgd
2927 addi 3,31,x1@got@tlsld
2930 addis 9,3,x2@dtprel@ha
2931 addi 9,9,x2@dtprel@l
2932 lwz 9,x3@got@tprel(31)
2935 addis 9,2,x2@tprel@ha
2936 addi 9,9,x2@tprel@l'
2939 tls_as_opt="-a32 --fatal-warnings"
2943 .section ".tdata","awT",@progbits
2951 addi 3,2,ld0@got@tlsgd
2957 addi 3,2,x1@got@tlsld
2963 addis 9,3,x2@dtprel@ha
2964 addi 9,9,x2@dtprel@l
2967 ld 9,x3@got@dtprel(2)
2973 tls_as_opt="-a64 --fatal-warnings"
2977 .section ".tdata","awT",@progbits
2986 l %r1,foo@GOTNTPOFF(%r12)
2987 l %r1,0(%r1):tls_load:foo
2988 bas %r14,0(%r1,%r13):tls_gdcall:foo
2989 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2992 tls_as_opt="-m31 --fatal-warnings"
2996 .section ".tdata","awT",@progbits
3004 lg %r1,foo@GOTNTPOFF(%r12)
3005 larl %r1,foo@INDNTPOFF
3006 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3007 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3010 tls_as_opt="-m64 -Aesame --fatal-warnings"
3012 sh-*-* | sh[34]-*-*)
3014 .section ".tdata","awT",@progbits
3024 tls_as_opt=--fatal-warnings
3028 sparc*-sun-solaris2.*)
3030 tga_func=__tls_get_addr
3036 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3038 .section ".tdata",#alloc,#write,#tls'
3043 .section ".tdata","awT",@progbits'
3046 tls_as_opt="-32 --fatal-warnings"
3048 conftest_s="$conftest_s
3051 sethi %tgd_hi22(foo), %o0
3052 add %o0, %tgd_lo10(foo), %o1
3053 add %l7, %o1, %o0, %tgd_add(foo)
3054 call __tls_get_addr, %tgd_call(foo)
3055 sethi %tldm_hi22(foo), %l1
3056 add %l1, %tldm_lo10(foo), %l2
3057 add %l7, %l2, %o0, %tldm_add(foo)
3058 call __tls_get_addr, %tldm_call(foo)
3059 sethi %tldo_hix22(foo), %l3
3060 xor %l3, %tldo_lox10(foo), %l4
3061 add %o0, %l4, %l5, %tldo_add(foo)
3062 sethi %tie_hi22(foo), %o3
3063 add %o3, %tie_lo10(foo), %o3
3064 ld [%l7 + %o3], %o2, %tie_ld(foo)
3065 add %g7, %o2, %o4, %tie_add(foo)
3066 sethi %tle_hix22(foo), %l1
3067 xor %l1, %tle_lox10(foo), %o5
3068 ld [%g7 + %o5], %o1"
3072 .section ".tdata","awT",@progbits
3075 movi a8, foo@TLSFUNC
3076 movi a10, foo@TLSARG
3077 callx8.tls a8, foo@TLSCALL'
3084 if test "x$enable_tls" = xno ; then
3085 : # TLS explicitly disabled.
3086 elif test "x$enable_tls" = xyes ; then
3087 set_have_as_tls=yes # TLS explicitly enabled.
3088 elif test -z "$tls_first_major"; then
3089 : # If we don't have a check, assume no support.
3091 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3092 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3093 [set_have_as_tls=yes])
3097 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3098 # with TLS support are in use, native TLS cannot work.
3102 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3103 # gld with TLS support are in use, native TLS cannot work.
3106 # TLS was introduced in the Solaris 9 FCS release and backported to
3107 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3108 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3109 # ld and GCC don't support any longer.
3111 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3113 # Check ld and ld.so.1 TLS support.
3114 if echo "$ld_ver" | grep GNU > /dev/null; then
3115 # Assume all interesting versions of GNU ld have TLS support.
3116 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3120 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3122 min_tls_ld_vers_minor=280
3124 # Solaris 8/SPARC ld has TLS support since version 1.272.
3125 sparc*-*-solaris2.8)
3126 min_tls_ld_vers_minor=272
3128 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3130 min_tls_ld_vers_minor=374
3132 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3133 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3134 min_tls_ld_vers_minor=343
3137 if test "$ld_vers_major" -gt 1 || \
3138 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3144 AC_MSG_RESULT($ld_tls_support)
3147 save_LDFLAGS="$LDFLAGS"
3151 AC_MSG_CHECKING(alternate thread library)
3153 # TLS support was backported to Solaris 8 patches, but only lives in
3154 # the alternate thread library which became the default in Solaris 9.
3155 # We want to always use that, irrespective of TLS support.
3157 # Take multilib subdir into account. There's no spec to handle
3158 # this. The 64 symlink exists since Solaris 8.
3159 lwp_dir=/usr/lib/lwp
3160 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3161 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3168 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3169 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3170 [Define to the linker flags to use for -pthread.])
3171 AC_MSG_RESULT($lwp_dir)
3173 AC_MSG_CHECKING(library containing $tga_func)
3174 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3175 # (32-bit x86) only lived in libthread, so check for that. Keep
3176 # set_have_as_tls if found, disable if not.
3177 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3178 # Clear LIBS if we cannot support TLS.
3179 if test $set_have_as_tls = no; then
3182 # Always define LIB_TLS_SPEC, even without TLS support.
3183 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3184 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3185 AC_MSG_RESULT($LIBS)
3188 LDFLAGS="$save_LDFLAGS"
3191 if test $set_have_as_tls = yes ; then
3192 AC_DEFINE(HAVE_AS_TLS, 1,
3193 [Define if your assembler and linker support thread-local storage.])
3196 # Target-specific assembler checks.
3198 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3199 gcc_cv_ld_static_dynamic=no
3200 gcc_cv_ld_static_option='-Bstatic'
3201 gcc_cv_ld_dynamic_option='-Bdynamic'
3202 if test $in_tree_ld = yes ; then
3203 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3204 gcc_cv_ld_static_dynamic=yes
3206 elif test x$gcc_cv_ld != x; then
3207 # Check if linker supports -Bstatic/-Bdynamic option
3208 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3209 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3210 gcc_cv_ld_static_dynamic=yes
3213 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3215 gcc_cv_ld_static_dynamic=yes
3216 gcc_cv_ld_static_option="-noso"
3217 gcc_cv_ld_dynamic_option="-so_archive"
3219 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3221 gcc_cv_ld_static_dynamic=yes
3223 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3225 gcc_cv_ld_static_dynamic=yes
3230 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3231 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3232 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3233 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3234 [Define to the linker option to disable use of shared objects.])
3235 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3236 [Define to the linker option to enable use of shared objects.])
3238 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3240 if test x"$demangler_in_ld" = xyes; then
3241 AC_MSG_CHECKING(linker --demangle support)
3242 gcc_cv_ld_demangle=no
3243 if test $in_tree_ld = yes; then
3244 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3245 gcc_cv_ld_demangle=yes
3247 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3248 # Check if the GNU linker supports --demangle option
3249 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3250 gcc_cv_ld_demangle=yes
3253 if test x"$gcc_cv_ld_demangle" = xyes; then
3254 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3255 [Define if your linker supports --demangle option.])
3257 AC_MSG_RESULT($gcc_cv_ld_demangle)
3260 AC_MSG_CHECKING(linker plugin support)
3262 if test -f liblto_plugin.la; then
3263 save_ld_ver="$ld_ver"
3264 save_ld_vers_major="$ld_vers_major"
3265 save_ld_vers_minor="$ld_vers_minor"
3266 save_ld_is_gold="$ld_is_gold"
3270 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3272 # FIXME: ld_is_gold?
3273 ld_vers_major="$gcc_cv_gld_major_version"
3274 ld_vers_minor="$gcc_cv_gld_minor_version"
3276 # Determine plugin linker version.
3277 # FIXME: Partial duplicate from above, generalize.
3279 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3280 if echo "$ld_ver" | grep GNU > /dev/null; then
3281 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3283 ld_vers=`echo $ld_ver | sed -n \
3284 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3286 ld_vers=`echo $ld_ver | sed -n \
3287 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3289 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3290 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3295 # Determine plugin support.
3296 if echo "$ld_ver" | grep GNU > /dev/null; then
3297 # Require GNU ld or gold 2.21+ for plugin support by default.
3298 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3300 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3301 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3306 ld_ver="$save_ld_ver"
3307 ld_vers_major="$save_ld_vers_major"
3308 ld_vers_minor="$save_ld_vers_minor"
3309 ld_is_gold="$save_ld_is_gold"
3311 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3312 [Define to the level of your linker's plugin support.])
3313 AC_MSG_RESULT($gcc_cv_lto_plugin)
3316 # All TARGET_ABI_OSF targets.
3317 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3318 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3319 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3322 extbl $3, $2, $3 !lituse_bytoff!1
3323 ldq $2, a($29) !literal!1
3324 ldq $4, b($29) !literal!2
3325 ldq_u $3, 0($2) !lituse_base!1
3326 ldq $27, f($29) !literal!5
3327 jsr $26, ($27), f !lituse_jsr!5
3328 ldah $29, 0($26) !gpdisp!3
3329 lda $0, c($29) !gprel
3330 ldah $1, d($29) !gprelhigh
3331 lda $1, d($1) !gprellow
3332 lda $29, 0($29) !gpdisp!3],,
3333 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3334 [Define if your assembler supports explicit relocations.])])
3335 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3336 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3339 ldq $27, a($29) !literal!1
3340 jsr $26, ($27), a !lituse_jsrdirect!1],,
3341 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3342 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3346 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3347 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3348 [-no-mul-bug-abort], [.text],,
3349 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3350 [Define if your assembler supports the -no-mul-bug-abort option.])])
3354 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3355 [.register %g2, #scratch],,
3356 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3357 [Define if your assembler supports .register.])])
3359 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3361 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3362 [Define if your assembler supports -relax option.])])
3364 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3365 gcc_cv_as_sparc_gotdata_op,,
3372 sethi %gdop_hix22(foo), %g1
3373 xor %g1, %gdop_lox10(foo), %g1
3374 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3375 [if test x$gcc_cv_ld != x \
3376 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3377 if test x$gcc_cv_objdump != x; then
3378 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3379 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3380 gcc_cv_as_sparc_gotdata_op=no
3382 gcc_cv_as_sparc_gotdata_op=yes
3387 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3388 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3390 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3391 gcc_cv_as_sparc_ua_pcrel,,
3399 .uaword %r_disp32(foo)],
3400 [if test x$gcc_cv_ld != x \
3401 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3402 gcc_cv_as_sparc_ua_pcrel=yes
3405 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3406 [Define if your assembler and linker support unaligned PC relative relocs.])
3408 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3409 gcc_cv_as_sparc_ua_pcrel_hidden,,
3414 .uaword %r_disp32(foo)
3415 .byte 0x32, 0x33, 0x34
3420 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3421 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3422 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3423 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3424 if $gcc_cv_objdump -R conftest 2> /dev/null \
3425 | grep 'DISP32' > /dev/null 2>&1; then
3428 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3432 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3433 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3434 ]) # unaligned pcrel relocs
3436 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3437 gcc_cv_as_sparc_offsetable_lo10,,
3440 or %g1, %lo(ab) + 12, %g1
3441 or %g1, %lo(ab + 12), %g1],
3442 [if test x$gcc_cv_objdump != x \
3443 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3444 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3445 gcc_cv_as_sparc_offsetable_lo10=yes
3447 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3448 [Define if your assembler supports offsetable %lo().])])
3452 i[34567]86-*-* | x86_64-*-*)
3456 # Full C++ conformance when using a shared libstdc++-v3 requires some
3457 # support from the Cygwin DLL, which in more recent versions exports
3458 # wrappers to aid in interposing and redirecting operators new, delete,
3459 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3460 # are configuring for a version of Cygwin that exports the wrappers.
3461 if test x$host = x$target; then
3462 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3464 # Can't check presence of libc functions during cross-compile, so
3465 # we just have to assume we're building for an up-to-date target.
3466 gcc_ac_cygwin_dll_wrappers=yes
3468 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3469 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3470 [Define if you want to generate code by default that assumes that the
3471 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3474 cygwin* | pe | mingw32*)
3475 # Recent binutils allows the three-operand form of ".comm" on PE. This
3476 # definition is used unconditionally to initialise the default state of
3477 # the target option variable that governs usage of the feature.
3478 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3479 [2,19,52],,[.comm foo,1,32])
3480 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3481 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3482 [Define if your assembler supports specifying the alignment
3483 of objects allocated using the GAS .comm command.])
3484 # Used for DWARF 2 in PE
3485 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3486 gcc_cv_as_ix86_pe_secrel32,
3492 [if test x$gcc_cv_ld != x \
3493 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3494 gcc_cv_as_ix86_pe_secrel32=yes
3497 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3498 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3499 # Test if the assembler supports the extended form of the .section
3500 # directive that specifies section alignment. LTO support uses this,
3501 # but normally only after installation, so we warn but don't fail the
3502 # configure if LTO is enabled but the assembler does not support it.
3503 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3504 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3505 if test x$gcc_cv_as_section_has_align != xyes; then
3506 case ",$enable_languages," in
3508 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3515 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3516 gcc_cv_as_ix86_filds,,,
3517 [filds mem; fists mem],,
3518 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3519 [Define if your assembler uses filds and fists mnemonics.])])
3521 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3522 gcc_cv_as_ix86_fildq,,,
3523 [fildq mem; fistpq mem],,
3524 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3525 [Define if your assembler uses fildq and fistq mnemonics.])])
3527 gcc_GAS_CHECK_FEATURE([cmov syntax],
3528 gcc_cv_as_ix86_cmov_sun_syntax,,,
3529 [cmovl.l %edx, %eax],,
3530 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3531 [Define if your assembler supports the Sun syntax for cmov.])])
3533 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3534 gcc_cv_as_ix86_ffreep,,,
3536 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3537 [Define if your assembler supports the ffreep mnemonic.])])
3539 gcc_GAS_CHECK_FEATURE([.quad directive],
3540 gcc_cv_as_ix86_quad,,,
3542 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3543 [Define if your assembler supports the .quad directive.])])
3545 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3546 gcc_cv_as_ix86_sahf,,,
3549 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3550 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3552 gcc_GAS_CHECK_FEATURE([swap suffix],
3553 gcc_cv_as_ix86_swap,,,
3554 [movl.s %esp, %ebp],,
3555 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3556 [Define if your assembler supports the swap suffix.])])
3558 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3559 gcc_cv_as_ix86_diff_sect_delta,,,
3567 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3568 [Define if your assembler supports the subtraction of symbols in different sections.])])
3570 # These two are used unconditionally by i386.[ch]; it is to be defined
3571 # to 1 if the feature is present, 0 otherwise.
3572 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3573 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3579 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3580 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3581 [Define true if the assembler supports '.long foo@GOTOFF'.])
3583 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3584 gcc_cv_as_ix86_rep_lock_prefix,,,
3586 lock addl %edi, (%eax,%esi)
3587 lock orl $0, (%esp)],,
3588 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3589 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3591 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3592 gcc_cv_as_ix86_tlsgdplt,,,
3593 [call tls_gd@tlsgdplt],,
3594 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3595 [Define if your assembler supports @tlsgdplt.])])
3597 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3598 gcc_cv_as_ix86_tlsldmplt,,,
3599 [call tls_ld@tlsldmplt],,
3600 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3601 [Define if your assembler supports @tlsldmplt.])])
3606 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3607 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3609 addl r15 = @ltoffx(x#), gp
3611 ld8.mov r16 = [[r15]], x#],,
3612 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3613 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3619 *-*-aix*) conftest_s=' .machine "pwr5"
3623 gcc_GAS_CHECK_FEATURE([.machine directive support],
3624 gcc_cv_as_machine_directive,,,
3625 [ .machine ppc7400])
3626 if test x$gcc_cv_as_machine_directive != xyes; then
3627 echo "*** This target requires an assembler supporting \".machine\"" >&2
3628 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3629 test x$build = x$target && exit 1
3633 *) conftest_s=' .machine power4
3638 gcc_GAS_CHECK_FEATURE([mfcr field support],
3639 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3641 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3642 [Define if your assembler supports mfcr field.])])
3645 *-*-aix*) conftest_s=' .machine "pwr5"
3648 *) conftest_s=' .machine power5
3653 gcc_GAS_CHECK_FEATURE([popcntb support],
3654 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3656 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3657 [Define if your assembler supports popcntb field.])])
3660 *-*-aix*) conftest_s=' .machine "pwr5x"
3663 *) conftest_s=' .machine power5
3668 gcc_GAS_CHECK_FEATURE([fp round support],
3669 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3671 [AC_DEFINE(HAVE_AS_FPRND, 1,
3672 [Define if your assembler supports fprnd.])])
3675 *-*-aix*) conftest_s=' .machine "pwr6"
3678 *) conftest_s=' .machine power6
3683 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3684 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3686 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3687 [Define if your assembler supports mffgpr and mftgpr.])])
3690 *-*-aix*) conftest_s=' .csect .text[[PR]]
3692 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3696 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3697 *) conftest_s=' .text
3699 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3702 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3703 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3705 [AC_DEFINE(HAVE_AS_REL16, 1,
3706 [Define if your assembler supports R_PPC_REL16 relocs.])])
3709 *-*-aix*) conftest_s=' .machine "pwr6"
3712 *) conftest_s=' .machine power6
3717 gcc_GAS_CHECK_FEATURE([compare bytes support],
3718 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3720 [AC_DEFINE(HAVE_AS_CMPB, 1,
3721 [Define if your assembler supports cmpb.])])
3724 *-*-aix*) conftest_s=' .machine "pwr6"
3727 *) conftest_s=' .machine power6
3732 gcc_GAS_CHECK_FEATURE([decimal float support],
3733 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3735 [AC_DEFINE(HAVE_AS_DFP, 1,
3736 [Define if your assembler supports DFP instructions.])])
3739 *-*-aix*) conftest_s=' .machine "pwr7"
3742 *) conftest_s=' .machine power7
3747 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3748 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3750 [AC_DEFINE(HAVE_AS_VSX, 1,
3751 [Define if your assembler supports VSX instructions.])])
3754 *-*-aix*) conftest_s=' .machine "pwr7"
3757 *) conftest_s=' .machine power7
3762 gcc_GAS_CHECK_FEATURE([popcntd support],
3763 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3765 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3766 [Define if your assembler supports POPCNTD instructions.])])
3769 *-*-aix*) conftest_s=' .csect .text[[PR]]
3771 *) conftest_s=' .text
3775 gcc_GAS_CHECK_FEATURE([lwsync support],
3776 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3778 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3779 [Define if your assembler supports LWSYNC instructions.])])
3782 *-*-aix*) conftest_s=' .machine "476"
3785 *) conftest_s=' .machine "476"
3790 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3791 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3793 [AC_DEFINE(HAVE_AS_DCI, 1,
3794 [Define if your assembler supports the DCI/ICI instructions.])])
3796 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3797 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3798 [.gnu_attribute 4,1],,
3799 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3800 [Define if your assembler supports .gnu_attribute.])])
3802 gcc_GAS_CHECK_FEATURE([tls marker support],
3803 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3804 [ bl __tls_get_addr(x@tlsgd)],,
3805 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3806 [Define if your assembler supports arg info for __tls_get_addr.])])
3810 gcc_GAS_CHECK_FEATURE([.ref support],
3811 gcc_cv_as_aix_ref, [2.21.0],,
3812 [ .csect stuff[[rw]]
3818 [AC_DEFINE(HAVE_AS_REF, 1,
3819 [Define if your assembler supports .ref])])
3825 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3826 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3827 [ lw $4,%gp_rel(foo)($4)],,
3828 [if test x$target_cpu_default = x
3829 then target_cpu_default=MASK_EXPLICIT_RELOCS
3830 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3832 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3833 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3834 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3835 [Define if the assembler understands -mno-shared.])])
3837 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3838 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3839 [.gnu_attribute 4,1],,
3840 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3841 [Define if your assembler supports .gnu_attribute.])])
3843 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3844 gcc_cv_as_mips_dtprelword, [2,18,0],,
3845 [.section .tdata,"awT",@progbits
3849 .dtprelword x+0x8000],,
3850 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3851 [Define if your assembler supports .dtprelword.])])
3853 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3854 gcc_cv_as_mips_dspr1_mult,,,
3864 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3865 [Define if your assembler supports DSPR1 mult.])])
3867 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3868 gcc_cv_as_ld_jalr_reloc=no
3869 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3870 if test $in_tree_ld = yes ; then
3871 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3872 && test $in_tree_ld_is_elf = yes; then
3873 gcc_cv_as_ld_jalr_reloc=yes
3875 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3876 echo ' .ent x' > conftest.s
3877 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3878 echo ' ld $25,%call16(y)($28)' >> conftest.s
3879 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3880 echo '1: jalr $25' >> conftest.s
3881 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3882 echo '1: jalr $25' >> conftest.s
3883 echo ' .end x' >> conftest.s
3884 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3885 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3886 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3887 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3888 gcc_cv_as_ld_jalr_reloc=yes
3894 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3895 if test x$target_cpu_default = x; then
3896 target_cpu_default=MASK_RELAX_PIC_CALLS
3898 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3901 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3903 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3904 [gcc_cv_ld_mips_personality_relaxation],
3905 [gcc_cv_ld_mips_personality_relaxation=no
3906 if test $in_tree_ld = yes ; then
3907 if test "$gcc_cv_gld_major_version" -eq 2 \
3908 -a "$gcc_cv_gld_minor_version" -ge 21 \
3909 -o "$gcc_cv_gld_major_version" -gt 2; then
3910 gcc_cv_ld_mips_personality_relaxation=yes
3912 elif test x$gcc_cv_as != x \
3913 -a x$gcc_cv_ld != x \
3914 -a x$gcc_cv_readelf != x ; then
3915 cat > conftest.s <<EOF
3917 .cfi_personality 0x80,indirect_ptr
3924 .section .data,"aw",@progbits
3928 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3929 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3930 if $gcc_cv_readelf -d conftest 2>&1 \
3931 | grep TEXTREL > /dev/null 2>&1; then
3933 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3934 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3937 gcc_cv_ld_mips_personality_relaxation=yes
3941 rm -f conftest.s conftest.o conftest])
3942 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3943 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3944 [Define if your linker can relax absolute .eh_frame personality
3945 pointers into PC-relative form.])
3950 # Mips and HP-UX need the GNU assembler.
3951 # Linux on IA64 might be able to use the Intel assembler.
3954 mips*-*-* | *-*-hpux* )
3955 if test x$gas_flag = xyes \
3956 || test x"$host" != x"$build" \
3957 || test ! -x "$gcc_cv_as" \
3958 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3961 echo "*** This configuration requires the GNU assembler" >&2
3967 # ??? Not all targets support dwarf2 debug_line, even within a version
3968 # of gas. Moreover, we need to emit a valid instruction to trigger any
3969 # info to the output file. So, as supported targets are added to gas 2.11,
3970 # add some instruction here to (also) show we expect this might work.
3971 # ??? Once 2.11 is released, probably need to add first known working
3972 # version to the per-target configury.
3974 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3975 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3985 if test x"$insn" != x; then
3987 .file 1 \"conftest.s\"
3990 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3991 gcc_cv_as_dwarf2_debug_line,
3992 [elf,2,11,0],, [$conftest_s],
3993 [if test x$gcc_cv_objdump != x \
3994 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3995 | grep debug_line > /dev/null 2>&1; then
3996 gcc_cv_as_dwarf2_debug_line=yes
3999 # The .debug_line file table must be in the exact order that
4000 # we specified the files, since these indices are also used
4001 # by DW_AT_decl_file. Approximate this test by testing if
4002 # the assembler bitches if the same index is assigned twice.
4003 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4004 gcc_cv_as_dwarf2_file_buggy,,,
4008 if test $gcc_cv_as_dwarf2_debug_line = yes \
4009 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4010 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4011 [Define if your assembler supports dwarf2 .file/.loc directives,
4012 and preserves file table indices exactly as given.])
4015 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4016 gcc_cv_as_gdwarf2_flag,
4017 [elf,2,11,0], [--gdwarf2], [$insn],,
4018 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4019 [Define if your assembler supports the --gdwarf2 option.])])
4021 gcc_GAS_CHECK_FEATURE([--gstabs option],
4022 gcc_cv_as_gstabs_flag,
4023 [elf,2,11,0], [--gstabs], [$insn],
4024 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4025 # and warns about it, but still exits successfully. So check for
4027 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4029 else gcc_cv_as_gstabs_flag=yes
4031 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4032 [Define if your assembler supports the --gstabs option.])])
4034 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4035 gcc_cv_as_debug_prefix_map_flag,
4036 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4037 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4038 [Define if your assembler supports the --debug-prefix-map option.])])
4041 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4044 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4045 [Define if your assembler supports .lcomm with an alignment field.])])
4047 AC_ARG_ENABLE(gnu-unique-object,
4048 [AS_HELP_STRING([--enable-gnu-unique-object],
4049 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4050 [case $enable_gnu_unique_object in
4052 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4053 Valid choices are 'yes' and 'no'.]) ;;
4055 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4057 [.type foo, @gnu_unique_object],,
4058 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4059 [[if test x$host = x$build -a x$host = x$target &&
4060 ldd --version 2>/dev/null &&
4061 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4062 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4063 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4064 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4065 if test "$glibcnum" -ge 2011 ; then
4066 enable_gnu_unique_object=yes
4069 if test x$enable_gnu_unique_object = xyes; then
4070 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4071 [Define if your assembler supports @gnu_unique_object.])
4074 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4075 [gcc_cv_as_line_zero],
4076 [gcc_cv_as_line_zero=no
4077 if test $in_tree_gas = yes; then
4078 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4079 elif test "x$gcc_cv_as" != x; then
4080 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4081 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4082 test "x`cat conftest.out`" = x
4084 gcc_cv_as_line_zero=yes
4086 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4087 cat conftest.s >&AS_MESSAGE_LOG_FD
4088 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4089 cat conftest.out >&AS_MESSAGE_LOG_FD
4091 rm -f conftest.o conftest.s conftest.out
4093 if test "x$gcc_cv_as_line_zero" = xyes; then
4094 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4095 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4098 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4099 gcc_cv_ld_eh_frame_hdr=no
4100 if test $in_tree_ld = yes ; then
4101 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4102 && test $in_tree_ld_is_elf = yes; then
4103 gcc_cv_ld_eh_frame_hdr=yes
4105 elif test x$gcc_cv_ld != x; then
4106 if echo "$ld_ver" | grep GNU > /dev/null; then
4107 # Check if linker supports --eh-frame-hdr option
4108 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4109 gcc_cv_ld_eh_frame_hdr=yes
4114 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4115 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4116 gcc_cv_ld_eh_frame_hdr=yes
4122 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4123 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4124 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4125 [Define if your linker supports .eh_frame_hdr.])
4127 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4129 AC_MSG_CHECKING(linker position independent executable support)
4131 if test $in_tree_ld = yes ; then
4132 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4133 && test $in_tree_ld_is_elf = yes; then
4136 elif test x$gcc_cv_ld != x; then
4137 # Check if linker supports -pie option
4138 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4142 if test x"$gcc_cv_ld_pie" = xyes; then
4143 AC_DEFINE(HAVE_LD_PIE, 1,
4144 [Define if your linker supports -pie option.])
4146 AC_MSG_RESULT($gcc_cv_ld_pie)
4148 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4149 gcc_cv_ld_eh_gc_sections=no
4150 if test $in_tree_ld = yes ; then
4151 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4152 && test $in_tree_ld_is_elf = yes; then
4153 gcc_cv_ld_eh_gc_sections=yes
4155 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4156 cat > conftest.s <<EOF
4159 .type _start, @function
4162 .size _start, .-_start
4163 .section .text.foo,"ax",@progbits
4164 .type foo, @function
4168 .section .gcc_except_table.foo,"a",@progbits
4171 .section .eh_frame,"a",@progbits
4174 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4175 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4176 | grep "gc-sections option ignored" > /dev/null; then
4177 gcc_cv_ld_eh_gc_sections=no
4178 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4179 | grep gcc_except_table > /dev/null; then
4180 gcc_cv_ld_eh_gc_sections=yes
4181 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4182 if test x$gcc_cv_as_comdat_group != xyes; then
4183 gcc_cv_ld_eh_gc_sections=no
4184 cat > conftest.s <<EOF
4187 .type _start, @function
4190 .size _start, .-_start
4191 .section .gnu.linkonce.t.foo,"ax",@progbits
4192 .type foo, @function
4196 .section .gcc_except_table.foo,"a",@progbits
4199 .section .eh_frame,"a",@progbits
4202 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4203 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4204 | grep "gc-sections option ignored" > /dev/null; then
4205 gcc_cv_ld_eh_gc_sections=no
4206 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4207 | grep gcc_except_table > /dev/null; then
4208 gcc_cv_ld_eh_gc_sections=yes
4214 rm -f conftest.s conftest.o conftest
4218 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4219 gcc_cv_ld_eh_gc_sections=no
4222 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4223 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4224 [Define if your linker supports garbage collection of
4225 sections in presence of EH frames.])
4227 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4229 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4230 gcc_cv_ld_eh_gc_sections_bug=no
4231 if test $in_tree_ld = yes ; then
4232 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4233 && test $in_tree_ld_is_elf = yes; then
4234 gcc_cv_ld_eh_gc_sections_bug=yes
4236 elif test x$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
4237 gcc_cv_ld_eh_gc_sections_bug=yes
4238 cat > conftest.s <<EOF
4241 .type _start, @function
4244 .size _start, .-_start
4245 .section .text.startup.foo,"ax",@progbits
4246 .type foo, @function
4250 .section .gcc_except_table.foo,"a",@progbits
4253 .section .eh_frame,"a",@progbits
4256 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4257 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4258 | grep "gc-sections option ignored" > /dev/null; then
4260 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4261 | grep gcc_except_table > /dev/null; then
4262 gcc_cv_ld_eh_gc_sections_bug=no
4265 rm -f conftest.s conftest.o conftest
4267 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4268 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4269 [Define if your linker has buggy garbage collection of
4270 sections support when .text.startup.foo like sections are used.])
4272 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4278 AC_CACHE_CHECK(linker --as-needed support,
4279 gcc_cv_ld_as_needed,
4280 [gcc_cv_ld_as_needed=no
4281 if test $in_tree_ld = yes ; then
4282 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4283 && test $in_tree_ld_is_elf = yes; then
4284 gcc_cv_ld_as_needed=yes
4286 elif test x$gcc_cv_ld != x; then
4287 # Check if linker supports --as-needed and --no-as-needed options
4288 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4289 gcc_cv_ld_as_needed=yes
4293 if test x"$gcc_cv_ld_as_needed" = xyes; then
4294 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4295 [Define if your linker supports --as-needed and --no-as-needed options.])
4298 case "$target:$tm_file" in
4299 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4300 AC_CACHE_CHECK(linker support for omitting dot symbols,
4301 gcc_cv_ld_no_dot_syms,
4302 [gcc_cv_ld_no_dot_syms=no
4303 if test $in_tree_ld = yes ; then
4304 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4305 gcc_cv_ld_no_dot_syms=yes
4307 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4308 cat > conftest1.s <<EOF
4312 cat > conftest2.s <<EOF
4313 .section ".opd","aw"
4318 .quad .LEfoo,.TOC.@tocbase,0
4324 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4325 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4326 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4327 gcc_cv_ld_no_dot_syms=yes
4329 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4332 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4333 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4334 [Define if your PowerPC64 linker only needs function descriptor syms.])
4337 AC_CACHE_CHECK(linker large toc support,
4338 gcc_cv_ld_large_toc,
4339 [gcc_cv_ld_large_toc=no
4340 if test $in_tree_ld = yes ; then
4341 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4342 gcc_cv_ld_large_toc=yes
4344 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4345 cat > conftest.s <<EOF
4346 .section ".tbss","awT",@nobits
4352 addis 9,13,ie0@got@tprel@ha
4353 ld 9,ie0@got@tprel@l(9)
4355 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4356 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4357 gcc_cv_ld_large_toc=yes
4359 rm -f conftest conftest.o conftest.s
4362 if test x"$gcc_cv_ld_large_toc" = xyes; then
4363 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4364 [Define if your PowerPC64 linker supports a large TOC.])
4369 AC_CACHE_CHECK(linker --build-id support,
4371 [gcc_cv_ld_buildid=no
4372 if test $in_tree_ld = yes ; then
4373 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4374 "$gcc_cv_gld_minor_version" -ge 18 -o \
4375 "$gcc_cv_gld_major_version" -gt 2 \
4376 && test $in_tree_ld_is_elf = yes; then
4377 gcc_cv_ld_buildid=yes
4379 elif test x$gcc_cv_ld != x; then
4380 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4381 gcc_cv_ld_buildid=yes
4384 if test x"$gcc_cv_ld_buildid" = xyes; then
4385 AC_DEFINE(HAVE_LD_BUILDID, 1,
4386 [Define if your linker supports --build-id.])
4389 AC_ARG_ENABLE(linker-build-id,
4390 [AS_HELP_STRING([--enable-linker-build-id],
4391 [compiler will always pass --build-id to linker])],
4393 enable_linker_build_id=no)
4395 if test x"$enable_linker_build_id" = xyes; then
4396 if test x"$gcc_cv_ld_buildid" = xyes; then
4397 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4398 [Define if gcc should always pass --build-id to linker.])
4400 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4404 # In binutils 2.21, GNU ld gained support for new emulations fully
4405 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4406 AC_CACHE_CHECK(linker *_sol2 emulation support,
4407 gcc_cv_ld_sol2_emulation,
4408 [gcc_cv_ld_sol2_emulation=no
4409 if test $in_tree_ld = yes ; then
4410 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4411 "$gcc_cv_gld_minor_version" -ge 21 -o \
4412 "$gcc_cv_gld_major_version" -gt 2 \
4413 && test $in_tree_ld_is_elf = yes; then
4414 gcc_cv_ld_sol2_emulation=yes
4416 elif test x$gcc_cv_ld != x; then
4417 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4418 grep _sol2 > /dev/null; then
4419 gcc_cv_ld_sol2_emulation=yes
4422 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4423 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4424 [Define if your linker supports the *_sol2 emulations.])
4427 AC_CACHE_CHECK(linker --sysroot support,
4429 [gcc_cv_ld_sysroot=no
4430 if test $in_tree_ld = yes ; then
4431 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4432 gcc_cv_ld_sysroot=yes
4434 elif test x$gcc_cv_ld != x; then
4435 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4436 gcc_cv_ld_sysroot=yes
4439 if test x"$gcc_cv_ld_sysroot" = xyes; then
4440 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4441 [Define if your linker supports --sysroot.])
4444 if test x$with_sysroot = x && test x$host = x$target \
4445 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4446 && test "$prefix" != "NONE"; then
4447 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4448 [Define to PREFIX/include if cpp should also search that directory.])
4451 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4452 if test "x$with_headers" != x; then
4453 target_header_dir=$with_headers
4454 elif test "x$with_sysroot" = x; then
4455 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4456 elif test "x$with_build_sysroot" != "x"; then
4457 target_header_dir="${with_build_sysroot}/usr/include"
4458 elif test "x$with_sysroot" = xyes; then
4459 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4461 target_header_dir="${with_sysroot}/usr/include"
4464 target_header_dir=/usr/include
4467 # Test for stack protector support in target C library.
4468 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4469 gcc_cv_libc_provides_ssp,
4470 [gcc_cv_libc_provides_ssp=no
4472 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4473 [# glibc 2.4 and later provides __stack_chk_fail and
4474 # either __stack_chk_guard, or TLS access to stack guard canary.
4475 if test -f $target_header_dir/features.h \
4476 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4477 $target_header_dir/features.h > /dev/null; then
4478 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4479 $target_header_dir/features.h > /dev/null; then
4480 gcc_cv_libc_provides_ssp=yes
4481 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4482 $target_header_dir/features.h > /dev/null \
4483 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4484 $target_header_dir/features.h > /dev/null; then
4485 gcc_cv_libc_provides_ssp=yes
4486 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4487 $target_header_dir/features.h > /dev/null && \
4488 test -f $target_header_dir/bits/uClibc_config.h && \
4489 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4490 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4491 gcc_cv_libc_provides_ssp=yes
4496 # Avoid complicated tests (see
4497 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4498 # simply assert that glibc does provide this, which is true for all
4499 # realistically usable GNU/Hurd configurations.
4500 gcc_cv_libc_provides_ssp=yes;;
4501 *-*-darwin* | *-*-freebsd*)
4502 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4503 [echo "no __stack_chk_fail on this target"])
4505 *) gcc_cv_libc_provides_ssp=no ;;
4508 if test x$gcc_cv_libc_provides_ssp = xyes; then
4509 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4510 [Define if your target C library provides stack protector support])
4513 # Test for <sys/sdt.h> on the target.
4514 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4515 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4517 if test -f $target_header_dir/sys/sdt.h; then
4518 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4519 [Define if your target C library provides sys/sdt.h])
4521 AC_MSG_RESULT($have_sys_sdt_h)
4523 # Check if TFmode long double should be used by default or not.
4524 # Some glibc targets used DFmode long double, but with glibc 2.4
4525 # and later they can use TFmode.
4527 powerpc*-*-linux* | \
4531 AC_ARG_WITH(long-double-128,
4532 [AS_HELP_STRING([--with-long-double-128],
4533 [use 128-bit long double by default])],
4534 gcc_cv_target_ldbl128="$with_long_double_128",
4535 [[gcc_cv_target_ldbl128=no
4536 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4537 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4538 && gcc_cv_target_ldbl128=yes
4542 if test x$gcc_cv_target_ldbl128 = xyes; then
4543 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4544 [Define if TFmode long double should be the default])
4547 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4548 gcc_cv_target_dl_iterate_phdr=unknown
4551 # <link.h> needs both a dl_iterate_phdr declaration and support for
4552 # compilation with largefile support.
4553 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4554 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4555 gcc_cv_target_dl_iterate_phdr=yes
4557 gcc_cv_target_dl_iterate_phdr=no
4561 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4562 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4563 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4564 [Define if your target C library provides the `dl_iterate_phdr' function.])
4566 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4568 # Find out what GC implementation we want, or may, use.
4570 [AS_HELP_STRING([--with-gc={page,zone}],
4571 [choose the garbage collection mechanism to use
4572 with the compiler])],
4579 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4582 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4587 echo "Using $GGC for garbage collection."
4589 # Libraries to use on the host. This will normally be set by the top
4590 # level Makefile. Here we simply capture the value for our Makefile.
4591 if test -z "${HOST_LIBS+set}"; then
4596 # Use the system's zlib library.
4598 zlibinc="-I\$(srcdir)/../zlib"
4599 AC_ARG_WITH(system-zlib,
4600 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4607 dnl Very limited version of automake's enable-maintainer-mode
4609 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4610 dnl maintainer-mode is disabled by default
4611 AC_ARG_ENABLE(maintainer-mode,
4612 [AS_HELP_STRING([--enable-maintainer-mode],
4613 [enable make rules and dependencies not useful
4614 (and sometimes confusing) to the casual installer])],
4615 maintainer_mode=$enableval,
4618 AC_MSG_RESULT($maintainer_mode)
4620 if test "$maintainer_mode" = "yes"; then
4631 # Make empty files to contain the specs and options for each language.
4632 # Then add #include lines to for a compiler that has specs and/or options.
4638 # These (without "all_") are set in each config-lang.in.
4639 # `language' must be a single word so is spelled singularly.
4642 all_outputs='Makefile'
4643 # List of language makefile fragments.
4645 # Additional files for gengtype
4646 all_gtfiles="$target_gtfiles"
4648 # These are the languages that are set in --enable-languages,
4649 # and are available in the GCC tree.
4650 all_selected_languages=
4652 # Add the language fragments.
4653 # Languages are added via two mechanisms. Some information must be
4654 # recorded in makefile variables, these are defined in config-lang.in.
4655 # We accumulate them and plug them into the main Makefile.
4656 # The other mechanism is a set of hooks for each of the main targets
4657 # like `clean', `install', etc.
4659 language_hooks="Make-hooks"
4661 for lang in ${srcdir}/*/config-lang.in
4664 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4666 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4667 if test "x$lang_alias" = x
4669 echo "$lang doesn't set \$language." 1>&2
4672 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4673 subdirs="$subdirs $subdir"
4675 # $gcc_subdir is where the gcc integration files are to be found
4676 # for a language, both for internal compiler purposes (compiler
4677 # sources implementing front-end to GCC tree converters), and for
4678 # build infrastructure purposes (Make-lang.in, etc.)
4680 # This will be <subdir> (relative to $srcdir) if a line like
4681 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4682 # is found in <langdir>/config-lang.in, and will remain <langdir>
4685 # Except for the language alias (fetched above), the regular
4686 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4687 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4688 # only this and the language alias.
4690 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4691 if [ "$gcc_subdir" = "" ]; then
4692 gcc_subdir="$subdir"
4695 case ",$enable_languages," in
4697 all_selected_languages="$all_selected_languages $lang_alias"
4698 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4699 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4711 . ${srcdir}/$gcc_subdir/config-lang.in
4712 if test "x$language" = x
4714 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4719 case ",$enable_languages," in
4722 for i in $subdir_requires; do
4723 test -f "${srcdir}/$i/config-lang.in" && continue
4731 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4732 if test -f $srcdir/$gcc_subdir/lang.opt; then
4733 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4734 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4736 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4737 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4739 all_languages="$all_languages $language"
4740 all_compilers="$all_compilers $compilers"
4741 all_outputs="$all_outputs $outputs"
4742 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4743 case ",$enable_languages," in
4745 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4747 AC_SUBST(enable_lto)
4753 # Pick up gtfiles for c
4755 . ${srcdir}/c-config-lang.in
4756 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4759 for language in $all_selected_languages
4761 check_languages="$check_languages check-$language"
4764 # We link each language in with a set of hooks, reached indirectly via
4765 # lang.${target}. Only do so for selected languages.
4769 target_list="all.cross start.encap rest.encap tags \
4770 install-common install-man install-info install-pdf install-html dvi \
4771 pdf html uninstall info man srcextra srcman srcinfo \
4772 mostlyclean clean distclean maintainer-clean install-plugin"
4774 for t in $target_list
4777 for lang in $all_selected_languages
4781 echo "lang.$t: $x" >> Make-hooks
4785 # Option include files
4788 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4789 option_includes="option-includes.mk"
4790 AC_SUBST_FILE(option_includes)
4798 echo "dir ." > .gdbinit
4799 echo "dir ${srcdir}" >> .gdbinit
4800 if test x$gdb_needs_out_file_path = xyes
4802 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4804 if test "x$subdirs" != x; then
4807 echo "dir ${srcdir}/$s" >> .gdbinit
4810 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4812 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4813 AC_SUBST(gcc_tooldir)
4816 # Find a directory in which to install a shared libgcc.
4818 AC_ARG_ENABLE(version-specific-runtime-libs,
4819 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4820 [specify that runtime libraries should be
4821 installed in a compiler-specific directory])])
4823 AC_ARG_WITH(slibdir,
4824 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4825 slibdir="$with_slibdir",
4826 if test "${enable_version_specific_runtime_libs+set}" = set; then
4827 slibdir='$(libsubdir)'
4828 elif test "$host" != "$target"; then
4829 slibdir='$(build_tooldir)/lib'
4835 # Substitute configuration variables
4838 AC_SUBST(all_compilers)
4839 AC_SUBST(all_gtfiles)
4840 AC_SUBST(all_lang_makefrags)
4841 AC_SUBST(all_languages)
4842 AC_SUBST(all_selected_languages)
4843 AC_SUBST(build_exeext)
4844 AC_SUBST(build_install_headers_dir)
4845 AC_SUBST(build_xm_file_list)
4846 AC_SUBST(build_xm_include_list)
4847 AC_SUBST(build_xm_defines)
4848 AC_SUBST(build_file_translate)
4849 AC_SUBST(check_languages)
4850 AC_SUBST(cpp_install_dir)
4851 AC_SUBST(xmake_file)
4852 AC_SUBST(tmake_file)
4853 AC_SUBST(TM_ENDIAN_CONFIG)
4854 AC_SUBST(TM_MULTILIB_CONFIG)
4855 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4856 AC_SUBST(extra_gcc_objs)
4857 AC_SUBST(user_headers_inc_next_pre)
4858 AC_SUBST(user_headers_inc_next_post)
4859 AC_SUBST(extra_headers_list)
4860 AC_SUBST(extra_objs)
4861 AC_SUBST(extra_parts)
4862 AC_SUBST(extra_passes)
4863 AC_SUBST(extra_programs)
4864 AC_SUBST(float_h_file)
4865 AC_SUBST(gcc_config_arguments)
4866 AC_SUBST(gcc_gxx_include_dir)
4867 AC_SUBST(host_exeext)
4868 AC_SUBST(host_xm_file_list)
4869 AC_SUBST(host_xm_include_list)
4870 AC_SUBST(host_xm_defines)
4871 AC_SUBST(out_host_hook_obj)
4873 AC_SUBST(lang_opt_files)
4874 AC_SUBST(lang_specs_files)
4875 AC_SUBST(lang_tree_files)
4876 AC_SUBST(local_prefix)
4878 AC_SUBST(objc_boehm_gc)
4880 AC_SUBST(out_object_file)
4881 AC_SUBST(common_out_file)
4882 AC_SUBST(common_out_object_file)
4883 AC_SUBST(thread_file)
4884 AC_SUBST(tm_file_list)
4885 AC_SUBST(tm_include_list)
4886 AC_SUBST(tm_defines)
4887 AC_SUBST(libgcc_tm_file_list)
4888 AC_SUBST(libgcc_tm_include_list)
4889 AC_SUBST(tm_p_file_list)
4890 AC_SUBST(tm_p_include_list)
4891 AC_SUBST(xm_file_list)
4892 AC_SUBST(xm_include_list)
4893 AC_SUBST(xm_defines)
4894 AC_SUBST(use_gcc_stdint)
4895 AC_SUBST(c_target_objs)
4896 AC_SUBST(cxx_target_objs)
4897 AC_SUBST(fortran_target_objs)
4898 AC_SUBST(target_cpu_default)
4900 AC_SUBST_FILE(language_hooks)
4903 if test x${build} = x${host} ; then
4904 if test x${host} = x${target} ; then
4905 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4907 echo "Links are now set up to build a cross-compiler" 1>&2
4908 echo " from ${host} to ${target}." 1>&2
4911 if test x${host} = x${target} ; then
4912 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4913 echo " for ${target}." 1>&2
4915 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4916 echo " from ${host} to ${target}." 1>&2
4920 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4921 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4923 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4924 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4926 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4927 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4928 if test "x${CLOOGLIBS}" != "x" ; then
4929 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4932 # Check for plugin support
4933 AC_ARG_ENABLE(plugin,
4934 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4935 enable_plugin=$enableval,
4936 enable_plugin=yes; default_plugin=yes)
4942 if test x$build = x$host; then
4943 export_sym_check="nm${exeext} -g"
4944 elif test x$host = x$target; then
4945 export_sym_check="$gcc_cv_nm -g"
4951 if test x$build = x$host; then
4952 export_sym_check="objdump${exeext} -T"
4953 elif test x$host = x$target; then
4954 export_sym_check="$gcc_cv_objdump -T"
4961 if test x"$enable_plugin" = x"yes"; then
4963 AC_MSG_CHECKING([for exported symbols])
4964 if test "x$export_sym_check" != x; then
4965 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4966 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4967 if $export_sym_check conftest | grep foobar > /dev/null; then
4968 : # No need to use a flag
4969 AC_MSG_RESULT([yes])
4971 AC_MSG_RESULT([yes])
4972 AC_MSG_CHECKING([for -rdynamic])
4973 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4974 if $export_sym_check conftest | grep foobar > /dev/null; then
4976 pluginlibs="-rdynamic"
4981 AC_MSG_RESULT([$plugin_rdynamic])
4984 AC_MSG_RESULT([unable to check])
4989 AC_SEARCH_LIBS([dlopen], [dl])
4990 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4991 pluginlibs="$pluginlibs -ldl"
4995 # Check that we can build shared objects with -fPIC -shared
4996 saved_LDFLAGS="$LDFLAGS"
4997 saved_CFLAGS="$CFLAGS"
5000 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5001 CFLAGS="$CFLAGS -fPIC"
5002 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5005 CFLAGS="$CFLAGS -fPIC"
5006 LDFLAGS="$LDFLAGS -fPIC -shared"
5009 AC_MSG_CHECKING([for -fPIC -shared])
5011 [extern int X;],[return X == 0;],
5012 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5013 [AC_MSG_RESULT([no]); have_pic_shared=no])
5014 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5018 LDFLAGS="$saved_LDFLAGS"
5019 CFLAGS="$saved_CFLAGS"
5021 # If plugin support had been requested but not available, fail.
5022 if test x"$enable_plugin" = x"no" ; then
5023 if test x"$default_plugin" != x"yes"; then
5025 Building GCC with plugin support requires a host that supports
5026 -fPIC, -shared, -ldl and -rdynamic.])
5031 AC_SUBST(pluginlibs)
5032 AC_SUBST(enable_plugin)
5033 if test x"$enable_plugin" = x"yes"; then
5034 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5038 AC_ARG_ENABLE(libquadmath-support,
5039 [AS_HELP_STRING([--disable-libquadmath-support],
5040 [disable libquadmath support for Fortran])],
5041 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5042 ENABLE_LIBQUADMATH_SUPPORT=yes)
5043 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5044 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5045 [Define to 1 to enable libquadmath support])
5049 # Specify what hash style to use by default.
5050 AC_ARG_WITH([linker-hash-style],
5051 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5052 [specify the linker hash style])],
5053 [case x"$withval" in
5055 LINKER_HASH_STYLE=sysv
5058 LINKER_HASH_STYLE=gnu
5061 LINKER_HASH_STYLE=both
5064 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5067 [LINKER_HASH_STYLE=''])
5068 if test x"${LINKER_HASH_STYLE}" != x; then
5069 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5070 [The linker hash style])
5073 # Configure the subdirectories
5074 # AC_CONFIG_SUBDIRS($subdirs)
5076 # Create the Makefile
5077 # and configure language subdirectories
5078 AC_CONFIG_FILES($all_outputs)
5080 AC_CONFIG_COMMANDS([default],
5082 case ${CONFIG_HEADERS} in
5083 *auto-host.h:config.in*)
5086 # Make sure all the subdirs exist.
5087 for d in $subdirs doc build common c-family
5089 test -d $d || mkdir $d
5092 [subdirs='$subdirs'])