2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
5 # 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 2, 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 COPYING. If not, write to the Free
21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${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$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${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 changequote(<<, >>)dnl
145 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
150 AC_ARG_WITH(cpp_install_dir,
151 [ --with-cpp-install-dir=DIR
152 install the user visible C preprocessor in DIR
153 (relative to PREFIX) as well as PREFIX/bin],
154 [if test x$withval = xyes; then
155 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
156 elif test x$withval != xno; then
157 cpp_install_dir=$withval
160 # We would like to our source tree to be readonly. However when releases or
161 # pre-releases are generated, the flex/bison generated files as well as the
162 # various formats of manuals need to be included along with the rest of the
163 # sources. Therefore we have --enable-generated-files-in-srcdir to do
166 AC_MSG_CHECKING([whether to place generated files in the source directory])
167 dnl generated-files-in-srcdir is disabled by default
168 AC_ARG_ENABLE(generated-files-in-srcdir,
169 [ --enable-generated-files-in-srcdir
170 put copies of generated files in source dir
171 intended for creating source tarballs for users
172 without texinfo bison or flex.],
173 generated_files_in_srcdir=$enableval,
174 generated_files_in_srcdir=no)
176 AC_MSG_RESULT($generated_files_in_srcdir)
178 if test "$generated_files_in_srcdir" = "yes"; then
185 # -------------------
186 # Find default linker
187 # -------------------
191 [ --with-gnu-ld arrange to work with GNU ld.],
192 gnu_ld_flag="$with_gnu_ld",
195 # With pre-defined ld
197 [ --with-ld arrange to use the specified ld (full pathname)],
198 DEFAULT_LINKER="$with_ld")
199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
200 if test ! -x "$DEFAULT_LINKER"; then
201 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
202 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
205 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
206 [Define to enable the use of a default linker.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 AC_MSG_CHECKING([whether a default assembler was specified])
250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
251 if test x"$gas_flag" = x"no"; then
252 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
254 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
264 # If a non-executable a.out is present (e.g. created by GNU as above even if
265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
266 # file, even when creating an executable, so an execution test fails.
267 # Remove possible default executable files to avoid this.
269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
270 # Autoconf includes it.
271 rm -f a.out a.exe b.out
273 # Find the native compiler
276 # autoconf is lame and doesn't give us any substitution variable for this.
277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
278 NO_MINUS_C_MINUS_O=yes
280 OUTPUT_OPTION='-o $@'
282 AC_SUBST(NO_MINUS_C_MINUS_O)
283 AC_SUBST(OUTPUT_OPTION)
285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
286 # optimizations to be activated explicitly by the toplevel.
289 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
293 # -------------------------
294 # Check C compiler features
295 # -------------------------
300 # sizeof(char) is 1 by definition.
301 AC_CHECK_SIZEOF(void *)
302 AC_CHECK_SIZEOF(short)
304 AC_CHECK_SIZEOF(long)
305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
308 # ---------------------
309 # Warnings and checking
310 # ---------------------
312 # Check $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
320 [whether ${CC} accepts -Wno-long-long],
321 [ac_cv_prog_cc_w_no_long_long],
322 [save_CFLAGS="$CFLAGS"
323 CFLAGS="-Wno-long-long"
324 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
325 [ac_cv_prog_cc_w_no_long_long=yes],
326 [ac_cv_prog_cc_w_no_long_long=no])
327 CFLAGS="$save_CFLAGS"
331 [whether ${CC} accepts -Wno-variadic-macros],
332 [ac_cv_prog_cc_w_no_variadic_macros],
333 [save_CFLAGS="$CFLAGS"
334 CFLAGS="-Wno-variadic-macros"
335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
336 [ac_cv_prog_cc_w_no_variadic_macros=yes],
337 [ac_cv_prog_cc_w_no_variadic_macros=no])
338 CFLAGS="$save_CFLAGS"
342 [whether ${CC} accepts -Wno-overlength-strings],
343 [ac_cv_prog_cc_w_no_overlength_strings],
344 [save_CFLAGS="$CFLAGS"
345 CFLAGS="-Wno-overlength-strings"
346 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
347 [ac_cv_prog_cc_w_no_overlength_strings=yes],
348 [ac_cv_prog_cc_w_no_overlength_strings=no])
349 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_no_long_long = yes \
354 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
355 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
356 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
359 # Add -Wold-style-definition if it's accepted
361 [whether ${CC} accepts -Wold-style-definition],
362 [ac_cv_prog_cc_w_old_style_definition],
363 [save_CFLAGS="$CFLAGS"
364 CFLAGS="-Wold-style-definition"
365 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
366 [ac_cv_prog_cc_w_old_style_definition=yes],
367 [ac_cv_prog_cc_w_old_style_definition=no])
368 CFLAGS="$save_CFLAGS"
370 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
371 strict1_warn="${strict1_warn} -Wold-style-definition"
374 # Add -Wmissing-format-attribute if it's accepted
376 [whether ${CC} accepts -Wmissing-format-attribute],
377 [ac_cv_prog_cc_w_missing_format_attribute],
378 [save_CFLAGS="$CFLAGS"
379 CFLAGS="-Wmissing-format-attribute"
380 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
381 [ac_cv_prog_cc_w_missing_format_attribute=yes],
382 [ac_cv_prog_cc_w_missing_format_attribute=no])
383 CFLAGS="$save_CFLAGS"
385 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
386 strict1_warn="${strict1_warn} -Wmissing-format-attribute"
389 # Enable -Werror, period.
390 AC_ARG_ENABLE(werror_always,
391 [ --enable-werror-always enable -Werror always], [],
392 [enable_werror_always=no])
393 if test x${enable_werror_always} = xyes ; then
394 strict1_warn="${strict1_warn} -Werror"
398 AC_SUBST(strict1_warn)
400 # Get C++ compatibility warning flag, if supported.
402 [whether ${CC} accepts -Wc++-compat],
403 [ac_cv_prog_cc_w_cxx_compat],
404 [save_CFLAGS="$CFLAGS"
405 CFLAGS="-Wc++-compat"
406 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
407 [ac_cv_prog_cc_w_cxx_compat=yes],
408 [ac_cv_prog_cc_w_cxx_compat=no])
409 CFLAGS="$save_CFLAGS"
411 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
412 cxx_compat_warn="-Wc++-compat"
414 AC_SUBST(cxx_compat_warn)
417 # If the native compiler is GCC, we can enable warnings even in stage1.
418 # That's useful for people building cross-compilers, or just running a
421 if test "x$GCC" = "xyes"; then
422 warn_cflags='$(GCC_WARN_CFLAGS)'
424 AC_SUBST(warn_cflags)
426 # Enable -Werror in bootstrap stage2 and later.
428 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
431 AC_ARG_ENABLE(werror,
432 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
433 [if test x$is_release = x ; then
434 # Default to "yes" on development branches.
437 # Default to "no" on release branches.
440 if test x$enable_werror = xyes ; then
445 # Enable expensive internal checks
446 AC_ARG_ENABLE(checking,
447 [ --enable-checking[=LIST]
448 enable expensive run-time checks. With LIST,
449 enable only specific categories of checks.
450 Categories are: yes,no,all,none,release.
451 Flags are: assert,fold,gc,gcac,misc,
452 rtlflag,rtl,runtime,tree,valgrind.],
453 [ac_checking_flags="${enableval}"],[
454 # Determine the default checks.
455 if test x$is_release = x ; then
456 ac_checking_flags=yes
458 ac_checking_flags=release
464 ac_gc_always_collect=
467 ac_runtime_checking=1
469 ac_valgrind_checking=
470 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
471 for check in $ac_checking_flags
474 # these set all the flags to specific states
475 yes) ac_assert_checking=1 ; ac_checking=1 ;
476 ac_fold_checking= ; ac_gc_checking=1 ;
477 ac_gc_always_collect= ; ac_rtl_checking= ;
478 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
479 ac_tree_checking=1 ; ac_valgrind_checking= ;;
480 no|none) ac_assert_checking= ; ac_checking= ;
481 ac_fold_checking= ; ac_gc_checking= ;
482 ac_gc_always_collect= ; ac_rtl_checking= ;
483 ac_rtlflag_checking= ; ac_runtime_checking= ;
484 ac_tree_checking= ; ac_valgrind_checking= ;;
485 all) ac_assert_checking=1 ; ac_checking=1 ;
486 ac_fold_checking=1 ; ac_gc_checking=1 ;
487 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
488 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
489 ac_tree_checking=1 ; ac_valgrind_checking= ;;
490 release) ac_assert_checking=1 ; ac_checking= ;
491 ac_fold_checking= ; ac_gc_checking= ;
492 ac_gc_always_collect= ; ac_rtl_checking= ;
493 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
494 ac_tree_checking= ; ac_valgrind_checking= ;;
495 # these enable particular checks
496 assert) ac_assert_checking=1 ;;
497 fold) ac_fold_checking=1 ;;
498 gc) ac_gc_checking=1 ;;
499 gcac) ac_gc_always_collect=1 ;;
500 misc) ac_checking=1 ;;
501 rtl) ac_rtl_checking=1 ;;
502 rtlflag) ac_rtlflag_checking=1 ;;
503 runtime) ac_runtime_checking=1 ;;
504 tree) ac_tree_checking=1 ;;
505 valgrind) ac_valgrind_checking=1 ;;
506 *) AC_MSG_ERROR(unknown check category $check) ;;
512 if test x$ac_checking != x ; then
513 AC_DEFINE(ENABLE_CHECKING, 1,
514 [Define if you want more run-time sanity checks. This one gets a grab
515 bag of miscellaneous but relatively cheap checks.])
516 nocommon_flag=-fno-common
518 AC_SUBST(nocommon_flag)
519 if test x$ac_assert_checking != x ; then
520 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
521 [Define if you want assertions enabled. This is a cheap check.])
523 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
524 if test x$ac_runtime_checking != x ; then
525 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
526 [Define if you want runtime assertions enabled. This is a cheap check.])
528 if test x$ac_tree_checking != x ; then
529 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
530 [Define if you want all operations on trees (the basic data
531 structure of the front ends) to be checked for dynamic type safety
532 at runtime. This is moderately expensive. The tree browser debugging
533 routines will also be enabled by this option.
535 TREEBROWSER=tree-browser.o
537 AC_SUBST(TREEBROWSER)
538 if test x$ac_rtl_checking != x ; then
539 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
540 [Define if you want all operations on RTL (the basic data structure
541 of the optimizer and back end) to be checked for dynamic type safety
542 at runtime. This is quite expensive.])
544 if test x$ac_rtlflag_checking != x ; then
545 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
546 [Define if you want RTL flag accesses to be checked against the RTL
547 codes that are supported for each access macro. This is relatively
550 if test x$ac_gc_checking != x ; then
551 AC_DEFINE(ENABLE_GC_CHECKING, 1,
552 [Define if you want the garbage collector to do object poisoning and
553 other memory allocation checks. This is quite expensive.])
555 if test x$ac_gc_always_collect != x ; then
556 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
557 [Define if you want the garbage collector to operate in maximally
558 paranoid mode, validating the entire heap and collecting garbage at
559 every opportunity. This is extremely expensive.])
561 if test x$ac_fold_checking != x ; then
562 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
563 [Define if you want fold checked that it never destructs its argument.
564 This is quite expensive.])
566 valgrind_path_defines=
569 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
570 dnl # an if statement. This was the source of very frustrating bugs
571 dnl # in converting to autoconf 2.5x!
572 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
574 if test x$ac_valgrind_checking != x ; then
575 # It is certainly possible that there's valgrind but no valgrind.h.
576 # GCC relies on making annotations so we must have both.
577 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
578 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
579 [[#include <valgrind/memcheck.h>
580 #ifndef VALGRIND_DISCARD
581 #error VALGRIND_DISCARD not defined
583 [gcc_cv_header_valgrind_memcheck_h=yes],
584 [gcc_cv_header_valgrind_memcheck_h=no])
585 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
586 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
587 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
588 [[#include <memcheck.h>
589 #ifndef VALGRIND_DISCARD
590 #error VALGRIND_DISCARD not defined
592 [gcc_cv_header_memcheck_h=yes],
593 [gcc_cv_header_memcheck_h=no])
594 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
595 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
596 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
597 if test "x$valgrind_path" = "x" \
598 || (test $have_valgrind_h = no \
599 && test $gcc_cv_header_memcheck_h = no \
600 && test $gcc_cv_header_valgrind_memcheck_h = no); then
601 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
603 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
604 valgrind_command="$valgrind_path -q"
605 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
606 [Define if you want to run subprograms and generated programs
607 through valgrind (a memory checker). This is extremely expensive.])
608 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
609 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
610 [Define if valgrind's valgrind/memcheck.h header is installed.])
612 if test $gcc_cv_header_memcheck_h = yes; then
613 AC_DEFINE(HAVE_MEMCHECK_H, 1,
614 [Define if valgrind's memcheck.h header is installed.])
617 AC_SUBST(valgrind_path_defines)
618 AC_SUBST(valgrind_command)
620 AC_ARG_ENABLE(mapped-location,
621 [ --enable-mapped-location location_t is fileline integer cookie],,
622 enable_mapped_location=no)
624 if test "$enable_mapped_location" = yes ; then
625 AC_DEFINE(USE_MAPPED_LOCATION, 1,
626 [Define if location_t is fileline integer cookie.])
629 # Enable code coverage collection
630 AC_ARG_ENABLE(coverage,
631 [ --enable-coverage[=LEVEL]
632 enable compiler's code coverage collection.
633 Use to measure compiler performance and locate
634 unused parts of the compiler. With LEVEL, specify
635 optimization. Values are opt, noopt,
637 [case "${enableval}" in
639 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
642 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
645 # a.k.a. --disable-coverage
649 AC_MSG_ERROR(unknown coverage setting $enableval)
653 AC_SUBST(coverage_flags)
655 AC_ARG_ENABLE(gather-detailed-mem-stats,
656 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
657 [enable_gather_detailed_mem_stats=no])
658 if test x$enable_gather_detailed_mem_stats = xyes ; then
659 AC_DEFINE(GATHER_STATISTICS, 1,
660 [Define to enable detailed memory allocation stats gathering.])
663 # -------------------------------
664 # Miscenalleous configure options
665 # -------------------------------
669 [ --with-stabs arrange to use stabs instead of host debug format],
673 # Determine whether or not multilibs are enabled.
674 AC_ARG_ENABLE(multilib,
675 [ --enable-multilib enable library support for multiple ABIs],
676 [], [enable_multilib=yes])
677 AC_SUBST(enable_multilib)
679 # Enable __cxa_atexit for C++.
680 AC_ARG_ENABLE(__cxa_atexit,
681 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
684 # Enable C extension for decimal float if target supports it.
685 AC_ARG_ENABLE(decimal-float,
686 [ --enable-decimal-float enable decimal float extension to C],
688 if test x$enablevar = xyes ; then
690 powerpc*-*-linux* | i?86*-*-linux*)
691 enable_decimal_float=yes
694 AC_MSG_WARN(decimal float is not supported for this target, ignored)
695 enable_decimal_float=no
699 ], [enable_decimal_float=no])
701 AC_SUBST(enable_decimal_float)
703 dfp=`if test $enable_decimal_float = yes; then echo 1; else echo 0; fi`
704 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
705 [Define to 1 to enable decimal float extension to C.])
708 # Pass with no value to take the default
709 # Pass with a value to specify a thread package
710 AC_ARG_ENABLE(threads,
711 [ --enable-threads enable thread usage for target GCC
712 --enable-threads=LIB use LIB thread package for target GCC],,
716 [ --enable-tls enable or disable generation of tls code
717 overriding the assembler check for tls support],
721 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
722 Valid choices are 'yes' and 'no'.]) ;;
726 AC_ARG_ENABLE(objc-gc,
727 [ --enable-objc-gc enable the use of Boehm's garbage collector with
728 the GNU Objective-C runtime],
729 if test x$enable_objc_gc = xno; then
737 [ --with-dwarf2 force the default debug format to be DWARF 2],
738 dwarf2="$with_dwarf2",
741 AC_ARG_ENABLE(shared,
742 [ --disable-shared don't provide a shared libgcc],
744 case $enable_shared in
748 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
749 for pkg in $enableval; do
750 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
757 ], [enable_shared=yes])
758 AC_SUBST(enable_shared)
760 AC_ARG_WITH(build-sysroot,
761 [ --with-build-sysroot=sysroot
762 use sysroot as the system root during the build])
765 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
767 case ${with_sysroot} in
768 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
769 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
772 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
773 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
775 if test "x$exec_prefix" = xNONE; then
776 if test "x$prefix" = xNONE; then
777 test_prefix=/usr/local
782 test_prefix=$exec_prefix
784 case ${TARGET_SYSTEM_ROOT} in
785 "${test_prefix}"|"${test_prefix}/"*|\
786 '${exec_prefix}'|'${exec_prefix}/'*)
787 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
788 TARGET_SYSTEM_ROOT_DEFINE="$t"
793 TARGET_SYSTEM_ROOT_DEFINE=
794 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
796 AC_SUBST(TARGET_SYSTEM_ROOT)
797 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
798 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
800 # Build with intermodule optimisations
801 AC_ARG_ENABLE(intermodule,
802 [ --enable-intermodule build the compiler in one step],
803 [case ${enable_intermodule} in
804 yes) onestep="-onestep";;
810 # Sanity check enable_languages in case someone does not run the toplevel
811 # configure # script.
812 AC_ARG_ENABLE(languages,
813 [ --enable-languages=LIST specify which front-ends to build],
814 [case ,${enable_languages}, in
816 # go safe -- we cannot be much sure without the toplevel
818 # analysis of which target libs are present and usable
822 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
827 enable_languages=c,${enable_languages}
830 [enable_languages=c])
832 # Used by documentation targets
833 AC_SUBST(datarootdir)
837 # -------------------------
838 # Checks for other programs
839 # -------------------------
843 # Find some useful tools
845 # We need awk to create options.c and options.h.
846 # Bail out if it's missing.
848 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
856 # By default, the Darwin ranlib will not treat common symbols as
857 # definitions when building the archive table of contents. Other
858 # ranlibs do that; pass an option to the Darwin ranlib that makes
859 # it behave similarly.
865 AC_SUBST(ranlib_flags)
869 # See if cmp has --ignore-initial.
870 gcc_AC_PROG_CMP_IGNORE_INITIAL
872 # See if we have the mktemp command.
873 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
875 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
877 # See if makeinfo has been installed and is modern enough
878 # that we can use it.
879 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
880 [GNU texinfo.* \([0-9][0-9.]*\)],
882 if test $gcc_cv_prog_makeinfo_modern = no; then
883 MAKEINFO="$MISSING makeinfo"
885 *** Makeinfo is missing or too old.
886 *** Info documentation will not be built.])
893 # Is pod2man recent enough to regenerate manpages?
894 AC_MSG_CHECKING([for recent Pod::Man])
895 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
897 GENERATED_MANPAGES=generated-manpages
902 AC_SUBST(GENERATED_MANPAGES)
905 dnl Don't use AC_PROG_LEX; we insist on flex.
906 dnl LEXLIB is not useful in gcc.
907 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
910 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
912 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
913 # check for build == host before using them.
916 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
917 && test -d ../binutils ; then
918 NM='$(objdir)/../binutils/nm-new'
920 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
924 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
925 && test -d ../binutils ; then
926 AR='$(objdir)/../binutils/ar'
928 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
932 # --------------------
933 # Checks for C headers
934 # --------------------
936 AC_MSG_CHECKING(for GNU C library)
937 AC_CACHE_VAL(gcc_cv_glibc,
938 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
939 [[#include <features.h>]], [[
940 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
941 #error Not a GNU C library system
945 AC_MSG_RESULT($gcc_cv_glibc)
946 if test $gcc_cv_glibc = yes; then
947 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
950 # Need to reject headers which give warnings, so that the -Werror bootstrap
951 # works later. *sigh* This needs to come before all header checks.
958 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
959 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
960 sys/resource.h sys/param.h sys/times.h sys/stat.h \
961 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
963 # Check for thread headers.
964 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
965 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
967 # These tests can't be done till we know if we have limits.h.
975 # Stage specific cflags for build.
981 stage1_cflags="-Wa,-J"
987 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
988 # sources; use -no-cpp-precomp to get to GNU cpp.
989 # Apple's GCC has bugs in designated initializer handling, so disable
991 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
994 AC_SUBST(stage1_cflags)
996 # These libraries may be used by collect2.
997 # We may need a special search path to get them linked.
998 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1000 for libs in '' -lld -lmld \
1001 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1002 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1005 AC_TRY_LINK_FUNC(ldopen,
1006 [gcc_cv_collect2_libs="$libs"; break])
1009 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1010 case $gcc_cv_collect2_libs in
1012 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1014 AC_SUBST(COLLECT2_LIBS)
1016 # When building Ada code on Alpha, we need exc_resume which is usually in
1017 # -lexc. So test for it.
1020 AC_SEARCH_LIBS(exc_resume, exc)
1023 AC_SUBST(GNAT_LIBEXC)
1025 # Some systems put ldexp and frexp in libm instead of libc; assume
1026 # they're both in the same place. jcf-dump needs them.
1029 AC_SEARCH_LIBS(ldexp, m)
1034 # Use <inttypes.h> only if it exists,
1035 # doesn't clash with <sys/types.h>, and declares intmax_t.
1036 AC_MSG_CHECKING(for inttypes.h)
1037 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1038 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1039 [[#include <sys/types.h>
1040 #include <inttypes.h>]],
1041 [[intmax_t i = -1;]])],
1042 [gcc_cv_header_inttypes_h=yes],
1043 [gcc_cv_header_inttypes_h=no])])
1044 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1045 if test $gcc_cv_header_inttypes_h = yes; then
1046 AC_DEFINE(HAVE_INTTYPES_H, 1,
1047 [Define if you have a working <inttypes.h> header file.])
1050 dnl Disabled until we have a complete test for buggy enum bitfields.
1051 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1053 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1054 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1055 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1056 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1057 putchar_unlocked putc_unlocked)
1058 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1059 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1060 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1063 if test x$ac_cv_func_mbstowcs = xyes; then
1064 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1065 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1071 [gcc_cv_func_mbstowcs_works=yes],
1072 [gcc_cv_func_mbstowcs_works=no],
1073 [gcc_cv_func_mbstowcs_works=yes])])
1074 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1075 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1076 [Define this macro if mbstowcs does not crash when its
1077 first argument is NULL.])
1081 AC_CHECK_TYPE(ssize_t, int)
1083 # Try to determine the array type of the second argument of getgroups
1084 # for the target system (int or gid_t).
1086 if test "${target}" = "${build}"; then
1087 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1090 # This condition may need some tweaking. It should include all
1091 # targets where the array type of the second argument of getgroups
1092 # is int and the type of gid_t is not equivalent to int.
1093 *-*-sunos* | *-*-ultrix*)
1094 TARGET_GETGROUPS_T=int
1097 TARGET_GETGROUPS_T=gid_t
1101 AC_SUBST(TARGET_GETGROUPS_T)
1103 gcc_AC_FUNC_MMAP_BLACKLIST
1107 # Under VMS, vfork works very differently than on Unix. The standard test
1108 # won't work, and it isn't easily adaptable. It makes more sense to
1110 ac_cv_func_vfork_works=yes
1116 # Until we have in-tree GNU iconv:
1118 AC_SUBST(LIBICONV_DEP)
1124 # We will need to find libiberty.h and ansidecl.h
1125 saved_CFLAGS="$CFLAGS"
1126 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1127 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1128 strsignal strstr strverscmp \
1129 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1130 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1131 #include "ansidecl.h"
1132 #include "system.h"])
1134 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1135 #include "ansidecl.h"
1137 #ifdef HAVE_SYS_RESOURCE_H
1138 #include <sys/resource.h>
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_RESOURCE_H
1146 #include <sys/resource.h>
1148 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1149 [Define to \`long' if <sys/resource.h> doesn't define.])])
1151 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1152 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1153 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1154 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1155 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1156 #include "ansidecl.h"
1165 gcc_AC_CHECK_DECLS(times, , ,[
1166 #include "ansidecl.h"
1168 #ifdef HAVE_SYS_TIMES_H
1169 #include <sys/times.h>
1173 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1174 #include "ansidecl.h"
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190 [Define if <sys/times.h> defines struct tms.])
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201 AC_DEFINE(HAVE_CLOCK_T, 1,
1202 [Define if <time.h> defines clock_t.])
1205 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1206 CFLAGS="$saved_CFLAGS"
1208 gcc_AC_INITFINI_ARRAY
1210 # mkdir takes a single argument on some systems.
1211 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1219 # With Setjmp/Longjmp based exception handling.
1220 AC_ARG_ENABLE(sjlj-exceptions,
1221 [ --enable-sjlj-exceptions
1222 arrange to use setjmp/longjmp exception handling],
1223 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1224 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1225 [Define 0/1 to force the choice for exception handling model.])])
1227 # For platforms with the unwind ABI which includes an unwind library,
1228 # libunwind, we can choose to use the system libunwind.
1229 AC_ARG_WITH(system-libunwind,
1230 [ --with-system-libunwind use installed libunwind])
1232 # config.gcc also contains tests of with_system_libunwind.
1233 if test x$with_system_libunwind = xyes; then
1234 AC_DEFINE(HAVE_GETIPINFO, 1,
1235 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1238 # --------------------------------------------------------
1239 # Build, host, and target specific configuration fragments
1240 # --------------------------------------------------------
1242 # Collect build-machine-specific information.
1243 . ${srcdir}/config.build
1245 # Collect host-machine-specific information.
1246 . ${srcdir}/config.host
1250 # Collect target-machine-specific information.
1251 . ${srcdir}/config.gcc
1253 extra_objs="${host_extra_objs} ${extra_objs}"
1254 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1256 # Default the target-machine variables that were not explicitly set.
1257 if test x"$tm_file" = x
1258 then tm_file=$cpu_type/$cpu_type.h; fi
1260 if test x"$extra_headers" = x
1261 then extra_headers=; fi
1263 if test x$md_file = x
1264 then md_file=$cpu_type/$cpu_type.md; fi
1266 if test x$out_file = x
1267 then out_file=$cpu_type/$cpu_type.c; fi
1269 if test x"$tmake_file" = x
1270 then tmake_file=$cpu_type/t-$cpu_type
1273 if test x"$dwarf2" = xyes
1274 then tm_file="$tm_file tm-dwarf2.h"
1277 # Say what files are being used for the output code and MD file.
1278 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1279 echo "Using \`$srcdir/config/$md_file' as machine description file."
1281 # If any of the xm_file variables contain nonexistent files, warn
1282 # about them and drop them.
1285 for x in $build_xm_file; do
1286 if test -f $srcdir/config/$x
1288 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1294 for x in $host_xm_file; do
1295 if test -f $srcdir/config/$x
1297 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1303 for x in $xm_file; do
1304 if test -f $srcdir/config/$x
1306 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1312 for f in $tm_file; do
1315 if test $count = ax; then
1316 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1318 echo "Using the following target machine macro files:"
1319 for f in $tm_file; do
1320 echo " $srcdir/config/$f"
1324 if test x$need_64bit_hwint = xyes; then
1325 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1326 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1329 if test x$use_long_long_for_widest_fast_int = xyes; then
1330 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1331 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1332 efficiently supported by the host hardware.])
1336 for f in $host_xm_file; do
1339 if test $count = a; then
1341 elif test $count = ax; then
1342 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1344 echo "Using the following host machine macro files:"
1345 for f in $host_xm_file; do
1346 echo " $srcdir/config/$f"
1349 echo "Using ${out_host_hook_obj} for host machine hooks."
1351 if test "$host_xm_file" != "$build_xm_file"; then
1353 for f in $build_xm_file; do
1356 if test $count = a; then
1358 elif test $count = ax; then
1359 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1361 echo "Using the following build machine macro files:"
1362 for f in $build_xm_file; do
1363 echo " $srcdir/config/$f"
1370 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1371 gcc_cv_mcontext_underscores,
1373 #include <sys/signal.h>
1374 #include <ucontext.h>
1375 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1377 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1378 if test $gcc_cv_mcontext_underscores = yes; then
1379 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1380 [mcontext_t fields start with __])
1389 # Check if a valid thread package
1390 case ${enable_threads} in
1393 target_thread_file='single'
1397 target_thread_file='single'
1399 aix | dce | gnat | irix | posix | posix95 | rtems | \
1400 single | solaris | vxworks | win32 )
1401 target_thread_file=${enable_threads}
1404 echo "${enable_threads} is an unknown thread package" 1>&2
1409 if test x${thread_file} = x; then
1410 # No thread file set by target-specific clauses in config.gcc,
1411 # so use file chosen by default logic above
1412 thread_file=${target_thread_file}
1415 # Make gthr-default.h if we have a thread file.
1417 if test $thread_file != single; then
1418 rm -f gthr-default.h
1419 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1420 gthread_flags=-DHAVE_GTHR_DEFAULT
1422 AC_SUBST(gthread_flags)
1429 if test x$enable___cxa_atexit = xyes || \
1430 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1431 if test x$host = x$target; then
1433 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1434 # keyed to flag_use_cxa_atexit
1439 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1440 [echo "__cxa_atexit can't be enabled on this target"])
1444 # We can't check for __cxa_atexit when building a cross, so assume
1448 if test x$use_cxa_atexit = xyes; then
1449 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1450 [Define if you want to use __cxa_atexit, rather than atexit, to
1451 register C++ destructors for local statics and global objects.
1452 This is essential for fully standards-compliant handling of
1453 destructors, but requires __cxa_atexit in libc.])
1458 if test x$with_system_libunwind = xyes; then
1459 if test x$host = x$target; then
1460 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1463 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1464 if test x$use_getipinfo = xyes; then
1465 AC_DEFINE(HAVE_GETIPINFO, 1,
1466 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1468 echo "The system unwind library does not support _Unwind_GetIPInfo."
1471 # Look for a file containing extra machine modes.
1472 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1473 extra_modes_file='$(srcdir)'/config/${extra_modes}
1474 AC_SUBST(extra_modes_file)
1475 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1476 [Define to the name of a file containing a list of extra machine modes
1477 for this architecture.])
1480 # Convert extra_options into a form suitable for Makefile use.
1482 for f in $extra_options; do
1483 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1485 AC_SUBST(extra_opt_files)
1487 # auto-host.h is the file containing items generated by autoconf and is
1488 # the first file included by config.h.
1489 # If host=build, it is correct to have bconfig include auto-host.h
1490 # as well. If host!=build, we are in error and need to do more
1491 # work to find out the build config parameters.
1492 if test x$host = x$build
1494 build_auto=auto-host.h
1496 # We create a subdir, then run autoconf in the subdir.
1497 # To prevent recursion we set host and build for the new
1498 # invocation of configure to the build for this invocation
1505 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1506 *) realsrcdir=../${srcdir};;
1508 saved_CFLAGS="${CFLAGS}"
1509 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1510 ${realsrcdir}/configure \
1511 --enable-languages=${enable_languages-all} \
1512 --target=$target_alias --host=$build_alias --build=$build_alias
1513 CFLAGS="${saved_CFLAGS}"
1515 # We just finished tests for the build machine, so rename
1516 # the file auto-build.h in the gcc directory.
1517 mv auto-host.h ../auto-build.h
1520 build_auto=auto-build.h
1522 AC_SUBST(build_subdir)
1524 tm_file="${tm_file} defaults.h"
1525 tm_p_file="${tm_p_file} tm-preds.h"
1526 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1527 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1528 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1529 # put this back in temporarily.
1530 xm_file="auto-host.h ansidecl.h ${xm_file}"
1537 # Compile in configure arguments.
1538 if test -f configargs.h ; then
1539 # Being re-configured.
1540 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1541 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1543 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1546 # Double all backslashes and backslash all quotes to turn
1547 # gcc_config_arguments into a C string.
1548 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1549 $gcc_config_arguments
1551 gcc_config_arguments_str=`cat conftest.out`
1554 cat > configargs.h <<EOF
1555 /* Generated automatically. */
1556 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1557 static const char thread_model[] = "$thread_file";
1559 static const struct {
1560 const char *name, *value;
1561 } configure_default_options[] = $configure_default_options;
1565 # Internationalization
1566 ZW_GNU_GETTEXT_SISTER_DIR
1568 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1569 # -liconv on the link line twice.
1570 case "$LIBINTL" in *$LIBICONV*)
1574 AC_ARG_ENABLE(secureplt,
1575 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1578 # Windows32 Registry support for specifying GCC installation paths.
1579 AC_ARG_ENABLE(win32-registry,
1580 [ --disable-win32-registry
1581 disable lookup of installation paths in the
1582 Registry on Windows hosts
1583 --enable-win32-registry enable registry lookup (default)
1584 --enable-win32-registry=KEY
1585 use KEY instead of GCC version as the last portion
1586 of the registry key],,)
1589 win32 | pe | cygwin* | mingw32* | uwin*)
1590 if test "x$enable_win32_registry" != xno; then
1591 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1594 if test "x$enable_win32_registry" != xno; then
1595 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1596 [Define to 1 if installation paths should be looked up in the Windows
1597 Registry. Ignored on non-Windows hosts.])
1599 if test "x$enable_win32_registry" != xyes \
1600 && test "x$enable_win32_registry" != x; then
1601 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1602 [Define to be the last component of the Windows registry key under which
1603 to look for installation paths. The full key used will be
1604 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1605 The default is the GCC version number.])
1611 # Get an absolute path to the GCC top-level source directory
1612 holddir=`${PWDCMD-pwd}`
1614 topdir=`${PWDCMD-pwd}`
1617 # Conditionalize the makefile for this host machine.
1619 for f in ${host_xmake_file}
1621 if test -f ${srcdir}/config/$f
1623 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1627 # Conditionalize the makefile for this target machine.
1629 for f in ${tmake_file}
1631 if test -f ${srcdir}/config/$f
1633 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1636 tmake_file="${tmake_file_}"
1638 # If the host doesn't support symlinks, modify CC in
1639 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1640 # Otherwise, we can use "CC=$(CC)".
1644 cc_set_by_configure="\$(CC)"
1645 quoted_cc_set_by_configure="\$(CC)"
1646 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1647 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1650 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1651 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1652 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1653 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1657 # This is a terrible hack which will go away some day.
1658 host_cc_for_libada=${CC}
1659 AC_SUBST(host_cc_for_libada)
1661 out_object_file=`basename $out_file .c`.o
1663 tm_file_list="options.h"
1664 tm_include_list="options.h"
1665 for f in $tm_file; do
1668 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1669 tm_include_list="${tm_include_list} $f"
1672 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1673 tm_include_list="${tm_include_list} config/$f"
1680 for f in $tm_p_file; do
1683 tm_p_file_list="${tm_p_file_list} $f"
1684 tm_p_include_list="${tm_p_include_list} $f"
1687 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1688 tm_p_include_list="${tm_p_include_list} config/$f"
1694 for f in $xm_file; do
1697 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1698 xm_include_list="${xm_include_list} $f"
1701 xm_file_list="${xm_file_list} $f"
1702 xm_include_list="${xm_include_list} $f"
1705 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1706 xm_include_list="${xm_include_list} config/$f"
1712 host_xm_include_list=
1713 for f in $host_xm_file; do
1716 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1717 host_xm_include_list="${host_xm_include_list} $f"
1720 host_xm_file_list="${host_xm_file_list} $f"
1721 host_xm_include_list="${host_xm_include_list} $f"
1724 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1725 host_xm_include_list="${host_xm_include_list} config/$f"
1731 for f in $build_xm_file; do
1734 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1735 build_xm_include_list="${build_xm_include_list} $f"
1737 auto-build.h | auto-host.h )
1738 build_xm_file_list="${build_xm_file_list} $f"
1739 build_xm_include_list="${build_xm_include_list} $f"
1742 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1743 build_xm_include_list="${build_xm_include_list} config/$f"
1748 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1749 # cross-compiler which does not use the native headers and libraries.
1750 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1751 CROSS= AC_SUBST(CROSS)
1752 ALL=all.internal AC_SUBST(ALL)
1753 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1755 if test "x$with_build_sysroot" != x; then
1756 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1758 # This value is used, even on a native system, because
1759 # CROSS_SYSTEM_HEADER_DIR is just
1760 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1761 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1764 if test x$host != x$target
1766 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1768 SYSTEM_HEADER_DIR=$build_system_header_dir
1769 case "$host","$target" in
1770 # Darwin crosses can use the host system's libraries and headers,
1771 # because of the fat library support. Of course, it must be the
1772 # same version of Darwin on both sides. Allow the user to
1773 # just say --target=foo-darwin without a version number to mean
1774 # "the version on this system".
1775 *-*-darwin*,*-*-darwin*)
1776 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1777 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1778 if test $hostos = $targetos -o $targetos = darwin ; then
1780 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1785 i?86-*-*,x86_64-*-* \
1786 | powerpc*-*-*,powerpc64*-*-*)
1787 CROSS="$CROSS -DNATIVE_CROSS" ;;
1789 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1790 SYSTEM_HEADER_DIR=$build_system_header_dir
1793 # If this is a cross-compiler that does not
1794 # have its own set of headers then define
1797 # If this is using newlib, without having the headers available now,
1798 # then define inhibit_libc in LIBGCC2_CFLAGS.
1799 # This prevents libgcc2 from containing any code which requires libc
1802 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1803 test x$with_newlib = xyes ; } &&
1804 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1807 AC_SUBST(inhibit_libc)
1809 # When building gcc with a cross-compiler, we need to adjust things so
1810 # that the generator programs are still built with the native compiler.
1811 # Also, we cannot run fixincludes or fix-header.
1813 # These are the normal (build=host) settings:
1814 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1815 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1816 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1818 # Possibly disable fixproto, on a per-target basis.
1819 case ${use_fixproto} in
1824 STMP_FIXPROTO=stmp-fixproto
1827 AC_SUBST(STMP_FIXPROTO)
1829 # And these apply if build != host, or we are generating coverage data
1830 if test x$build != x$host || test "x$coverage_flags" != x
1832 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1834 if test "x$TARGET_SYSTEM_ROOT" = x; then
1835 if test "x$STMP_FIXPROTO" != x; then
1836 STMP_FIXPROTO=stmp-install-fixproto
1841 # Expand extra_headers to include complete path.
1842 # This substitutes for lots of t-* files.
1844 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1845 for file in ${extra_headers} ; do
1846 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1849 # Define collect2 in Makefile.
1850 case $host_can_use_collect2 in
1852 *) collect2='collect2$(exeext)' ;;
1854 AC_SUBST([collect2])
1856 # Add a definition of USE_COLLECT2 if system wants one.
1857 case $use_collect2 in
1858 no) use_collect2= ;;
1861 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1862 xm_defines="${xm_defines} USE_COLLECT2"
1863 case $host_can_use_collect2 in
1865 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1871 # ---------------------------
1872 # Assembler & linker features
1873 # ---------------------------
1875 # Identify the assembler which will work hand-in-glove with the newly
1876 # built GCC, so that we can examine its features. This is the assembler
1877 # which will be driven by the driver program.
1879 # If build != host, and we aren't building gas in-tree, we identify a
1880 # build->target assembler and hope that it will have the same features
1881 # as the host->target assembler we'll be using.
1882 gcc_cv_gas_major_version=
1883 gcc_cv_gas_minor_version=
1884 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1886 m4_pattern_allow([AS_FOR_TARGET])dnl
1887 AS_VAR_SET_IF(gcc_cv_as,, [
1888 if test -x "$DEFAULT_ASSEMBLER"; then
1889 gcc_cv_as="$DEFAULT_ASSEMBLER"
1890 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1891 && test -f ../gas/Makefile \
1892 && test x$build = x$host; then
1893 gcc_cv_as=../gas/as-new$build_exeext
1894 elif test -x as$build_exeext; then
1895 # Build using assembler in the current directory.
1896 gcc_cv_as=./as$build_exeext
1897 elif test -x $AS_FOR_TARGET; then
1898 gcc_cv_as="$AS_FOR_TARGET"
1900 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1903 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1904 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1906 AC_MSG_CHECKING(what assembler to use)
1907 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1908 # Single tree build which includes gas. We want to prefer it
1909 # over whatever linker top-level may have detected, since
1910 # we'll use what we're building after installation anyway.
1911 AC_MSG_RESULT(newly built gas)
1913 _gcc_COMPUTE_GAS_VERSION
1914 in_tree_gas_is_elf=no
1915 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1916 || (grep 'obj_format = multi' ../gas/Makefile \
1917 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1919 in_tree_gas_is_elf=yes
1922 AC_MSG_RESULT($gcc_cv_as)
1926 # Identify the linker which will work hand-in-glove with the newly
1927 # built GCC, so that we can examine its features. This is the linker
1928 # which will be driven by the driver program.
1930 # If build != host, and we aren't building gas in-tree, we identify a
1931 # build->target linker and hope that it will have the same features
1932 # as the host->target linker we'll be using.
1933 gcc_cv_gld_major_version=
1934 gcc_cv_gld_minor_version=
1935 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1936 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1938 AS_VAR_SET_IF(gcc_cv_ld,, [
1939 if test -x "$DEFAULT_LINKER"; then
1940 gcc_cv_ld="$DEFAULT_LINKER"
1941 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1942 && test -f ../ld/Makefile \
1943 && test x$build = x$host; then
1944 gcc_cv_ld=../ld/ld-new$build_exeext
1945 elif test -x collect-ld$build_exeext; then
1946 # Build using linker in the current directory.
1947 gcc_cv_ld=./collect-ld$build_exeext
1948 elif test -x $LD_FOR_TARGET; then
1949 gcc_cv_ld="$LD_FOR_TARGET"
1951 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1954 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1955 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1957 AC_MSG_CHECKING(what linker to use)
1958 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1959 # Single tree build which includes ld. We want to prefer it
1960 # over whatever linker top-level may have detected, since
1961 # we'll use what we're building after installation anyway.
1962 AC_MSG_RESULT(newly built ld)
1964 in_tree_ld_is_elf=no
1965 if (grep 'EMUL = .*elf' ../ld/Makefile \
1966 || grep 'EMUL = .*linux' ../ld/Makefile \
1967 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1968 in_tree_ld_is_elf=yes
1970 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
1973 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1974 if test x$gcc_cv_gld_version != x; then
1978 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1979 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1982 AC_MSG_RESULT($gcc_cv_ld)
1986 # Figure out what nm we will be using.
1987 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1988 AS_VAR_SET_IF(gcc_cv_nm,, [
1989 if test -f $gcc_cv_binutils_srcdir/configure.in \
1990 && test -f ../binutils/Makefile \
1991 && test x$build = x$host; then
1992 gcc_cv_nm=../binutils/nm-new$build_exeext
1993 elif test -x nm$build_exeext; then
1994 gcc_cv_nm=./nm$build_exeext
1995 elif test -x $NM_FOR_TARGET; then
1996 gcc_cv_nm="$NM_FOR_TARGET"
1998 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2001 AC_MSG_CHECKING(what nm to use)
2002 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2003 # Single tree build which includes binutils.
2004 AC_MSG_RESULT(newly built nm)
2007 AC_MSG_RESULT($gcc_cv_nm)
2011 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2012 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2014 # Figure out what objdump we will be using.
2015 AS_VAR_SET_IF(gcc_cv_objdump,, [
2016 if test -f $gcc_cv_binutils_srcdir/configure.in \
2017 && test -f ../binutils/Makefile \
2018 && test x$build = x$host; then
2019 # Single tree build which includes binutils.
2020 gcc_cv_objdump=../binutils/objdump$build_exeext
2021 elif test -x objdump$build_exeext; then
2022 gcc_cv_objdump=./objdump$build_exeext
2023 elif test -x $OBJDUMP_FOR_TARGET; then
2024 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2026 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2029 AC_MSG_CHECKING(what objdump to use)
2030 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2031 # Single tree build which includes binutils.
2032 AC_MSG_RESULT(newly built objdump)
2033 elif test x$gcc_cv_objdump = x; then
2034 AC_MSG_RESULT(not found)
2036 AC_MSG_RESULT($gcc_cv_objdump)
2039 # Figure out what assembler alignment features are present.
2040 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2044 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2045 [Define if your assembler supports .balign and .p2align.])])
2047 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2050 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2051 [Define if your assembler supports specifying the maximum number
2052 of bytes to skip when using the GAS .p2align command.])])
2054 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2056 [conftest_label1: .word 0
2058 conftest_label2: .word 0
2060 [if test x$gcc_cv_nm != x; then
2061 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2062 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2063 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2065 else gcc_cv_as_subsection_m1=yes
2067 rm -f conftest.nm1 conftest.nm2
2069 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2070 [Define if your assembler supports .subsection and .subsection -1 starts
2071 emitting at the beginning of your section.])])
2073 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2076 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2078 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2080 [ .weakref foobar, barfnot],,
2081 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2083 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2086 .NSUBSPA $CODE$,COMDAT],,
2087 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2089 # .hidden needs to be supported in both the assembler and the linker,
2090 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2091 # This is irritatingly difficult to feature test for; we have to check the
2092 # date string after the version number. If we've got an in-tree
2093 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2095 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2096 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2101 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2102 [if test $in_tree_ld = yes ; then
2104 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2105 && test $in_tree_ld_is_elf = yes; then
2106 gcc_cv_ld_hidden=yes
2109 gcc_cv_ld_hidden=yes
2110 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2111 if echo "$ld_ver" | grep GNU > /dev/null; then
2113 ld_vers=`echo $ld_ver | sed -n \
2114 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2115 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2116 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2117 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2118 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2119 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2120 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2121 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2122 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2123 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2124 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2125 if test 0"$ld_date" -lt 20020404; then
2126 if test -n "$ld_date"; then
2127 # If there was date string, but was earlier than 2002-04-04, fail
2129 elif test -z "$ld_vers"; then
2130 # If there was no date string nor ld version number, something is wrong
2133 test -z "$ld_vers_patch" && ld_vers_patch=0
2134 if test "$ld_vers_major" -lt 2; then
2136 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2137 gcc_cv_ld_hidden="no"
2138 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2146 hppa64*-*-hpux* | ia64*-*-hpux*)
2147 gcc_cv_ld_hidden=yes
2155 libgcc_visibility=no
2156 AC_SUBST(libgcc_visibility)
2157 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2158 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2159 libgcc_visibility=yes
2160 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2161 [Define if your assembler and linker support .hidden.])
2164 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2165 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2173 [# GAS versions before 2.11 do not support uleb128,
2174 # despite appearing to.
2175 # ??? There exists an elf-specific test that will crash
2176 # the assembler. Perhaps it's better to figure out whether
2177 # arbitrary sections are supported and try the test.
2178 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2179 if echo "$as_ver" | grep GNU > /dev/null; then
2181 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2182 as_major=`echo $as_ver | sed 's/\..*//'`
2183 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2185 if test $as_major -eq 2 && test $as_minor -lt 11
2187 else gcc_cv_as_leb128=yes
2190 [AC_DEFINE(HAVE_AS_LEB128, 1,
2191 [Define if your assembler supports .sleb128 and .uleb128.])])
2193 # GAS versions up to and including 2.11.0 may mis-optimize
2195 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2203 .section .eh_frame,"aw",@progbits
2205 .4byte .LECIE1-.LSCIE1
2219 .4byte .LEFDE1-.LASFDE1
2221 .4byte .LASFDE1-__FRAME_BEGIN__
2229 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2230 cat > conftest.lit <<EOF
2231 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2232 0010 01000000 12000000 18000000 00000000 ................
2233 0020 08000000 04080000 0044 .........D @&t@
2235 cat > conftest.big <<EOF
2236 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2237 0010 00000001 00000012 00000018 00000000 ................
2238 0020 00000008 04000000 0844 .........D @&t@
2240 # If the assembler didn't choke, and we can objdump,
2241 # and we got the correct data, then succeed.
2242 # The text in the here-document typically retains its unix-style line
2243 # endings, while the output of objdump will use host line endings.
2244 # Therefore, use diff -b for the comparisons.
2245 if test x$gcc_cv_objdump != x \
2246 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2247 | tail -3 > conftest.got \
2248 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2249 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2251 gcc_cv_as_eh_frame=yes
2252 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2253 gcc_cv_as_eh_frame=buggy
2255 # Uh oh, what do we do now?
2256 gcc_cv_as_eh_frame=no
2259 if test $gcc_cv_as_eh_frame = buggy; then
2260 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2261 [Define if your assembler mis-optimizes .eh_frame data.])
2264 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2265 [elf,2,12,0], [--fatal-warnings],
2266 [.section .rodata.str, "aMS", @progbits, 1])
2267 if test $gcc_cv_as_shf_merge = no; then
2268 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2269 [elf,2,12,0], [--fatal-warnings],
2270 [.section .rodata.str, "aMS", %progbits, 1])
2272 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2273 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2274 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2276 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2277 [elf,2,16,0], [--fatal-warnings],
2278 [.section .text,"axG",@progbits,.foo,comdat])
2279 if test $gcc_cv_as_comdat_group = yes; then
2280 gcc_cv_as_comdat_group_percent=no
2282 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2283 [elf,2,16,0], [--fatal-warnings],
2284 [.section .text,"axG",%progbits,.foo,comdat])
2286 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2288 if test 0"$ld_date" -lt 20050308; then
2289 if test -n "$ld_date"; then
2290 # If there was date string, but was earlier than 2005-03-08, fail
2292 elif test "$ld_vers_major" -lt 2; then
2294 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2299 # assume linkers other than GNU ld don't support COMDAT group
2302 if test $comdat_group = no; then
2303 gcc_cv_as_comdat_group=no
2304 gcc_cv_as_comdat_group_percent=no
2306 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2307 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2308 [Define 0/1 if your assembler and linker support COMDAT groups.])
2310 # Thread-local storage - the check is heavily parametrized.
2319 .section ".tdata","awT",@progbits
2322 ldq $27,__tls_get_addr($29) !literal!1
2323 lda $16,foo($29) !tlsgd!1
2324 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2325 ldq $27,__tls_get_addr($29) !literal!2
2326 lda $16,foo($29) !tlsldm!2
2327 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2328 ldq $1,foo($29) !gotdtprel
2329 ldah $2,foo($29) !dtprelhi
2330 lda $3,foo($2) !dtprello
2331 lda $4,foo($29) !dtprel
2332 ldq $1,foo($29) !gottprel
2333 ldah $2,foo($29) !tprelhi
2334 lda $3,foo($2) !tprello
2335 lda $4,foo($29) !tprel'
2338 tls_as_opt=--fatal-warnings
2342 .section ".tdata","awT",@progbits
2354 .section ".tdata","awT",@progbits
2358 addil LT%foo-$tls_gdidx$,gp
2359 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2362 addil LT%foo-$tls_ldidx$,gp
2364 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2365 addil LR%foo-$tls_dtpoff$,%ret0
2366 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2368 addil LT%foo-$tls_ieoff$,gp
2369 ldw RT%foo-$tls_ieoff$(%r1),%t2
2372 addil LR%foo-$tls_leoff$,%t1
2373 ldo RR%foo-$tls_leoff$(%r1),%t2'
2376 tls_as_opt=--fatal-warnings
2380 .section ".tdata","awT",%progbits
2393 .section ".tdata","awT",@progbits
2397 leal foo@TLSGD(,%ebx,1), %eax
2398 leal foo@TLSLDM(%ebx), %eax
2399 leal foo@DTPOFF(%eax), %edx
2400 movl foo@GOTTPOFF(%ebx), %eax
2401 subl foo@GOTTPOFF(%ebx), %eax
2402 addl foo@GOTNTPOFF(%ebx), %eax
2403 movl foo@INDNTPOFF, %eax
2404 movl $foo@TPOFF, %eax
2405 subl $foo@TPOFF, %eax
2406 leal foo@NTPOFF(%ecx), %eax'
2409 tls_as_opt=--fatal-warnings
2413 .section ".tdata","awT",@progbits
2417 leaq foo@TLSGD(%rip), %rdi
2418 leaq foo@TLSLD(%rip), %rdi
2419 leaq foo@DTPOFF(%rax), %rdx
2420 movq foo@GOTTPOFF(%rip), %rax
2421 movq $foo@TPOFF, %rax'
2424 tls_as_opt=--fatal-warnings
2428 .section ".tdata","awT",@progbits
2431 addl r16 = @ltoff(@dtpmod(foo#)), gp
2432 addl r17 = @ltoff(@dtprel(foo#)), gp
2433 addl r18 = @ltoff(@tprel(foo#)), gp
2434 addl r19 = @dtprel(foo#), gp
2435 adds r21 = @dtprel(foo#), r13
2436 movl r23 = @dtprel(foo#)
2437 addl r20 = @tprel(foo#), gp
2438 adds r22 = @tprel(foo#), r13
2439 movl r24 = @tprel(foo#)'
2442 tls_as_opt=--fatal-warnings
2446 .section .tdata,"awT",@progbits
2450 addiu $4, $28, %tlsgd(x)
2451 addiu $4, $28, %tlsldm(x)
2452 lui $4, %dtprel_hi(x)
2453 addiu $4, $4, %dtprel_lo(x)
2454 lw $4, %gottprel(x)($28)
2455 lui $4, %tprel_hi(x)
2456 addiu $4, $4, %tprel_lo(x)'
2459 tls_as_opt='-32 --fatal-warnings'
2463 .section ".tdata","awT",@progbits
2471 addi 3,31,ld0@got@tlsgd
2473 addi 3,31,x1@got@tlsld
2476 addis 9,3,x2@dtprel@ha
2477 addi 9,9,x2@dtprel@l
2478 lwz 9,x3@got@tprel(31)
2481 addis 9,2,x2@tprel@ha
2482 addi 9,9,x2@tprel@l'
2485 tls_as_opt="-a32 --fatal-warnings"
2489 .section ".tdata","awT",@progbits
2497 addi 3,2,ld0@got@tlsgd
2503 addi 3,2,x1@got@tlsld
2509 addis 9,3,x2@dtprel@ha
2510 addi 9,9,x2@dtprel@l
2513 ld 9,x3@got@dtprel(2)
2519 tls_as_opt="-a64 --fatal-warnings"
2523 .section ".tdata","awT",@progbits
2532 l %r1,foo@GOTNTPOFF(%r12)
2533 l %r1,0(%r1):tls_load:foo
2534 bas %r14,0(%r1,%r13):tls_gdcall:foo
2535 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2538 tls_as_opt="-m31 --fatal-warnings"
2542 .section ".tdata","awT",@progbits
2550 lg %r1,foo@GOTNTPOFF(%r12)
2551 larl %r1,foo@INDNTPOFF
2552 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2553 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2556 tls_as_opt="-m64 -Aesame --fatal-warnings"
2558 sh-*-* | sh[34]-*-*)
2560 .section ".tdata","awT",@progbits
2570 tls_as_opt=--fatal-warnings
2574 sparc*-sun-solaris2.[56789]*)
2575 # TLS was introduced in the Solaris 9 4/04 release but
2576 # we do not enable it by default on Solaris 9 either.
2577 if test "x$enable_tls" = xyes ; then
2583 sparc*-sun-solaris2.*)
2590 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2592 .section ".tdata",#alloc,#write,#tls
2595 sethi %tgd_hi22(foo), %o0
2596 add %o0, %tgd_lo10(foo), %o1
2597 add %l7, %o1, %o0, %tgd_add(foo)
2598 call __tls_get_addr, %tgd_call(foo)
2599 sethi %tldm_hi22(foo), %l1
2600 add %l1, %tldm_lo10(foo), %l2
2601 add %l7, %l2, %o0, %tldm_add(foo)
2602 call __tls_get_addr, %tldm_call(foo)
2603 sethi %tldo_hix22(foo), %l3
2604 xor %l3, %tldo_lox10(foo), %l4
2605 add %o0, %l4, %l5, %tldo_add(foo)
2606 sethi %tie_hi22(foo), %o3
2607 add %o3, %tie_lo10(foo), %o3
2608 ld [%l7 + %o3], %o2, %tie_ld(foo)
2609 add %g7, %o2, %o4, %tie_add(foo)
2610 sethi %tle_hix22(foo), %l1
2611 xor %l1, %tle_lox10(foo), %o5
2612 ld [%g7 + %o5], %o1'
2617 .section ".tdata","awT",@progbits
2620 sethi %tgd_hi22(foo), %o0
2621 add %o0, %tgd_lo10(foo), %o1
2622 add %l7, %o1, %o0, %tgd_add(foo)
2623 call __tls_get_addr, %tgd_call(foo)
2624 sethi %tldm_hi22(foo), %l1
2625 add %l1, %tldm_lo10(foo), %l2
2626 add %l7, %l2, %o0, %tldm_add(foo)
2627 call __tls_get_addr, %tldm_call(foo)
2628 sethi %tldo_hix22(foo), %l3
2629 xor %l3, %tldo_lox10(foo), %l4
2630 add %o0, %l4, %l5, %tldo_add(foo)
2631 sethi %tie_hi22(foo), %o3
2632 add %o3, %tie_lo10(foo), %o3
2633 ld [%l7 + %o3], %o2, %tie_ld(foo)
2634 add %g7, %o2, %o4, %tie_add(foo)
2635 sethi %tle_hix22(foo), %l1
2636 xor %l1, %tle_lox10(foo), %o5
2637 ld [%g7 + %o5], %o1'
2640 tls_as_opt="-32 --fatal-warnings"
2646 if test "x$enable_tls" = xno ; then
2647 : # TLS explicitly disabled.
2648 elif test "x$enable_tls" = xyes ; then
2649 set_have_as_tls=yes # TLS explicitly enabled.
2650 elif test -z "$tls_first_major"; then
2651 : # If we don't have a check, assume no support.
2653 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2654 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2655 [set_have_as_tls=yes])
2657 if test $set_have_as_tls = yes ; then
2658 AC_DEFINE(HAVE_AS_TLS, 1,
2659 [Define if your assembler supports thread-local storage.])
2662 # Target-specific assembler checks.
2664 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2665 gcc_cv_ld_static_dynamic=no
2666 if test $in_tree_ld = yes ; then
2667 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2668 gcc_cv_ld_static_dynamic=yes
2670 elif test x$gcc_cv_ld != x; then
2671 # Check if linker supports -Bstatic/-Bdynamic option
2672 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2673 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2674 gcc_cv_ld_static_dynamic=yes
2677 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2678 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2679 [Define if your linker supports -Bstatic/-Bdynamic option.])
2681 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2683 if test x"$demangler_in_ld" = xyes; then
2684 AC_MSG_CHECKING(linker --demangle support)
2685 gcc_cv_ld_demangle=no
2686 if test $in_tree_ld = yes; then
2687 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2688 gcc_cv_ld_demangle=yes
2690 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2691 # Check if the GNU linker supports --demangle option
2692 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2693 gcc_cv_ld_demangle=yes
2696 if test x"$gcc_cv_ld_demangle" = xyes; then
2697 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2698 [Define if your linker supports --demangle option.])
2700 AC_MSG_RESULT($gcc_cv_ld_demangle)
2704 # All TARGET_ABI_OSF targets.
2705 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2706 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2707 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2710 extbl $3, $2, $3 !lituse_bytoff!1
2711 ldq $2, a($29) !literal!1
2712 ldq $4, b($29) !literal!2
2713 ldq_u $3, 0($2) !lituse_base!1
2714 ldq $27, f($29) !literal!5
2715 jsr $26, ($27), f !lituse_jsr!5
2716 ldah $29, 0($26) !gpdisp!3
2717 lda $0, c($29) !gprel
2718 ldah $1, d($29) !gprelhigh
2719 lda $1, d($1) !gprellow
2720 lda $29, 0($29) !gpdisp!3],,
2721 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2722 [Define if your assembler supports explicit relocations.])])
2723 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2724 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2727 ldq $27, a($29) !literal!1
2728 jsr $26, ($27), a !lituse_jsrdirect!1],,
2729 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2730 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2734 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2735 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2736 [-no-mul-bug-abort], [.text],,
2737 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2738 [Define if your assembler supports the -no-mul-bug-abort option.])])
2742 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2743 [.register %g2, #scratch],,
2744 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2745 [Define if your assembler supports .register.])])
2747 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2749 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2750 [Define if your assembler supports -relax option.])])
2752 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2753 gcc_cv_as_sparc_ua_pcrel,,
2761 .uaword %r_disp32(foo)],
2762 [if test x$gcc_cv_ld != x \
2763 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2764 gcc_cv_as_sparc_ua_pcrel=yes
2767 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2768 [Define if your assembler and linker support unaligned PC relative relocs.])
2770 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2771 gcc_cv_as_sparc_ua_pcrel_hidden,,
2776 .uaword %r_disp32(foo)
2777 .byte 0x32, 0x33, 0x34
2782 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2783 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2784 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2785 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2786 if $gcc_cv_objdump -R conftest 2> /dev/null \
2787 | grep 'DISP32' > /dev/null 2>&1; then
2790 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2794 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2795 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2796 ]) # unaligned pcrel relocs
2798 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2799 gcc_cv_as_sparc_offsetable_lo10,,
2802 or %g1, %lo(ab) + 12, %g1
2803 or %g1, %lo(ab + 12), %g1],
2804 [if test x$gcc_cv_objdump != x \
2805 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2806 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2807 gcc_cv_as_sparc_offsetable_lo10=yes
2809 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2810 [Define if your assembler supports offsetable %lo().])])
2814 i[34567]86-*-* | x86_64-*-*)
2817 cygwin* | pe | mingw32*)
2818 # Used for DWARF 2 in PE
2819 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2820 gcc_cv_as_ix86_pe_secrel32,
2826 [if test x$gcc_cv_ld != x \
2827 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2828 gcc_cv_as_ix86_pe_secrel32=yes
2831 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2832 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2836 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2837 gcc_cv_as_ix86_filds_fists,
2838 [2,9,0],, [filds mem; fists mem],,
2839 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2840 [Define if your assembler uses the new HImode fild and fist notation.])])
2842 gcc_GAS_CHECK_FEATURE([cmov syntax],
2843 gcc_cv_as_ix86_cmov_sun_syntax,,,
2844 [cmovl.l %edx, %eax],,
2845 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2846 [Define if your assembler supports the Sun syntax for cmov.])])
2848 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2849 gcc_cv_as_ix86_ffreep,,,
2851 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2852 [Define if your assembler supports the ffreep mnemonic.])])
2854 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2855 gcc_cv_as_ix86_diff_sect_delta,,,
2863 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2864 [Define if your assembler supports the subtraction of symbols in different sections.])])
2866 # This one is used unconditionally by i386.[ch]; it is to be defined
2867 # to 1 if the feature is present, 0 otherwise.
2868 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2869 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2875 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2876 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2877 [Define true if the assembler supports '.long foo@GOTOFF'.])
2881 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2882 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2884 addl r15 = @ltoffx(x#), gp
2886 ld8.mov r16 = [[r15]], x#],,
2887 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2888 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2894 *-*-aix*) conftest_s=' .machine "pwr5"
2898 gcc_GAS_CHECK_FEATURE([.machine directive support],
2899 gcc_cv_as_machine_directive,,,
2900 [ .machine ppc7400])
2901 if test x$gcc_cv_as_machine_directive != xyes; then
2902 echo "*** This target requires an assembler supporting \".machine\"" >&2
2903 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2904 test x$build = x$target && exit 1
2908 *) conftest_s=' .machine power4
2913 gcc_GAS_CHECK_FEATURE([mfcr field support],
2914 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2916 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2917 [Define if your assembler supports mfcr field.])])
2920 *-*-aix*) conftest_s=' .machine "pwr5"
2923 *) conftest_s=' .machine power5
2928 gcc_GAS_CHECK_FEATURE([popcntb support],
2929 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2931 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2932 [Define if your assembler supports popcntb field.])])
2935 *-*-aix*) conftest_s=' .machine "pwr5x"
2938 *) conftest_s=' .machine power5
2943 gcc_GAS_CHECK_FEATURE([fp round support],
2944 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2946 [AC_DEFINE(HAVE_AS_FPRND, 1,
2947 [Define if your assembler supports fprnd.])])
2950 *-*-aix*) conftest_s=' .machine "pwr6"
2953 *) conftest_s=' .machine power6
2958 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2959 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2961 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2962 [Define if your assembler supports mffgpr and mftgpr.])])
2965 *-*-aix*) conftest_s=' .csect .text[[PR]]
2967 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2971 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2972 *) conftest_s=' .text
2974 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2977 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2978 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2980 [AC_DEFINE(HAVE_AS_REL16, 1,
2981 [Define if your assembler supports R_PPC_REL16 relocs.])])
2985 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2986 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2987 [ lw $4,%gp_rel(foo)($4)],,
2988 [if test x$target_cpu_default = x
2989 then target_cpu_default=MASK_EXPLICIT_RELOCS
2990 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2992 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2993 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2994 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2995 [Define if the assembler understands -mno-shared.])])
2999 # Mips and HP-UX need the GNU assembler.
3000 # Linux on IA64 might be able to use the Intel assembler.
3003 mips*-*-* | *-*-hpux* )
3004 if test x$gas_flag = xyes \
3005 || test x"$host" != x"$build" \
3006 || test ! -x "$gcc_cv_as" \
3007 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3010 echo "*** This configuration requires the GNU assembler" >&2
3016 # ??? Not all targets support dwarf2 debug_line, even within a version
3017 # of gas. Moreover, we need to emit a valid instruction to trigger any
3018 # info to the output file. So, as supported targets are added to gas 2.11,
3019 # add some instruction here to (also) show we expect this might work.
3020 # ??? Once 2.11 is released, probably need to add first known working
3021 # version to the per-target configury.
3023 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3024 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3025 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-*)
3028 ia64*-*-* | s390*-*-*)
3035 if test x"$insn" != x; then
3037 .file 1 \"conftest.s\"
3040 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3041 gcc_cv_as_dwarf2_debug_line,
3042 [elf,2,11,0],, [$conftest_s],
3043 [if test x$gcc_cv_objdump != x \
3044 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3045 | grep debug_line > /dev/null 2>&1; then
3046 gcc_cv_as_dwarf2_debug_line=yes
3049 # The .debug_line file table must be in the exact order that
3050 # we specified the files, since these indices are also used
3051 # by DW_AT_decl_file. Approximate this test by testing if
3052 # the assembler bitches if the same index is assigned twice.
3053 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3054 gcc_cv_as_dwarf2_file_buggy,,,
3058 if test $gcc_cv_as_dwarf2_debug_line = yes \
3059 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3060 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3061 [Define if your assembler supports dwarf2 .file/.loc directives,
3062 and preserves file table indices exactly as given.])
3065 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3066 gcc_cv_as_gdwarf2_flag,
3067 [elf,2,11,0], [--gdwarf2], [$insn],,
3068 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3069 [Define if your assembler supports the --gdwarf2 option.])])
3071 gcc_GAS_CHECK_FEATURE([--gstabs option],
3072 gcc_cv_as_gstabs_flag,
3073 [elf,2,11,0], [--gstabs], [$insn],
3074 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3075 # and warns about it, but still exits successfully. So check for
3077 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3079 else gcc_cv_as_gstabs_flag=yes
3081 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3082 [Define if your assembler supports the --gstabs option.])])
3085 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3086 gcc_cv_ld_ro_rw_mix=unknown
3087 if test $in_tree_ld = yes ; then
3088 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3089 && test $in_tree_ld_is_elf = yes; then
3090 gcc_cv_ld_ro_rw_mix=read-write
3092 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3093 echo '.section myfoosect, "a"' > conftest1.s
3094 echo '.section myfoosect, "aw"' > conftest2.s
3095 echo '.byte 1' >> conftest2.s
3096 echo '.section myfoosect, "a"' > conftest3.s
3097 echo '.byte 0' >> conftest3.s
3098 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3099 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3100 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3101 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3102 conftest2.o conftest3.o > /dev/null 2>&1; then
3103 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3104 | sed -e '/myfoosect/!d' -e N`
3105 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3106 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3107 gcc_cv_ld_ro_rw_mix=read-only
3109 gcc_cv_ld_ro_rw_mix=read-write
3114 rm -f conftest.* conftest[123].*
3117 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3118 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3119 [Define if your linker links a mix of read-only
3120 and read-write sections into a read-write section.])
3122 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3124 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3125 gcc_cv_ld_eh_frame_hdr=no
3126 if test $in_tree_ld = yes ; then
3127 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3128 && test $in_tree_ld_is_elf = yes; then
3129 gcc_cv_ld_eh_frame_hdr=yes
3131 elif test x$gcc_cv_ld != x; then
3132 # Check if linker supports --eh-frame-hdr option
3133 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3134 gcc_cv_ld_eh_frame_hdr=yes
3137 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3138 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3139 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3140 [Define if your linker supports --eh-frame-hdr option.])
3142 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3144 AC_MSG_CHECKING(linker position independent executable support)
3146 if test $in_tree_ld = yes ; then
3147 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3148 && test $in_tree_ld_is_elf = yes; then
3151 elif test x$gcc_cv_ld != x; then
3152 # Check if linker supports -pie option
3153 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3157 if test x"$gcc_cv_ld_pie" = xyes; then
3158 AC_DEFINE(HAVE_LD_PIE, 1,
3159 [Define if your linker supports -pie option.])
3161 AC_MSG_RESULT($gcc_cv_ld_pie)
3163 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3164 gcc_cv_ld_eh_gc_sections=no
3165 if test $in_tree_ld = yes ; then
3166 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3167 && test $in_tree_ld_is_elf = yes; then
3168 gcc_cv_ld_eh_gc_sections=yes
3170 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3171 cat > conftest.s <<EOF
3174 .type _start, @function
3177 .size _start, .-_start
3178 .section .text.foo,"ax",@progbits
3179 .type foo, @function
3183 .section .gcc_except_table.foo,"a",@progbits
3186 .section .eh_frame,"a",@progbits
3189 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3190 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3191 | grep "gc-sections option ignored" > /dev/null; then
3192 gcc_cv_ld_eh_gc_sections=no
3193 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3194 gcc_cv_ld_eh_gc_sections=yes
3197 rm -f conftest.s conftest.o conftest
3199 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3200 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3201 [Define if your linker supports garbage collection of
3202 sections in presence of EH frames.])
3204 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3210 AC_CACHE_CHECK(linker --as-needed support,
3211 gcc_cv_ld_as_needed,
3212 [gcc_cv_ld_as_needed=no
3213 if test $in_tree_ld = yes ; then
3214 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3215 && test $in_tree_ld_is_elf = yes; then
3216 gcc_cv_ld_as_needed=yes
3218 elif test x$gcc_cv_ld != x; then
3219 # Check if linker supports --as-needed and --no-as-needed options
3220 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3221 gcc_cv_ld_as_needed=yes
3225 if test x"$gcc_cv_ld_as_needed" = xyes; then
3226 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3227 [Define if your linker supports --as-needed and --no-as-needed options.])
3230 case "$target:$tm_file" in
3231 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3232 AC_CACHE_CHECK(linker support for omitting dot symbols,
3233 gcc_cv_ld_no_dot_syms,
3234 [gcc_cv_ld_no_dot_syms=no
3235 if test $in_tree_ld = yes ; then
3236 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3237 gcc_cv_ld_no_dot_syms=yes
3239 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3240 cat > conftest1.s <<EOF
3244 cat > conftest2.s <<EOF
3245 .section ".opd","aw"
3250 .quad .LEfoo,.TOC.@tocbase,0
3256 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3257 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3258 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3259 gcc_cv_ld_no_dot_syms=yes
3261 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3264 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3265 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3266 [Define if your PowerPC64 linker only needs function descriptor syms.])
3271 AC_CACHE_CHECK(linker --sysroot support,
3273 [gcc_cv_ld_sysroot=no
3274 if test $in_tree_ld = yes ; then
3275 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3276 gcc_cv_ld_sysroot=yes
3278 elif test x$gcc_cv_ld != x; then
3279 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3280 gcc_cv_ld_sysroot=yes
3283 if test x"$gcc_cv_ld_sysroot" = xyes; then
3284 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3285 [Define if your linker supports --sysroot.])
3288 if test x$with_sysroot = x && test x$host = x$target \
3289 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3290 && test "$prefix" != "NONE"; then
3291 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3292 [Define to PREFIX/include if cpp should also search that directory.])
3295 # Test for stack protector support in target C library.
3298 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3299 gcc_cv_libc_provides_ssp,
3300 [gcc_cv_libc_provides_ssp=no
3301 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3302 if test "x$with_sysroot" = x; then
3303 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3304 elif test "x$with_sysroot" = xyes; then
3305 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3307 glibc_header_dir="${with_sysroot}/usr/include"
3310 glibc_header_dir=/usr/include
3312 # glibc 2.4 and later provides __stack_chk_fail and
3313 # either __stack_chk_guard, or TLS access to stack guard canary.
3314 if test -f $glibc_header_dir/features.h \
3315 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3316 $glibc_header_dir/features.h > /dev/null; then
3317 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3318 $glibc_header_dir/features.h > /dev/null; then
3319 gcc_cv_libc_provides_ssp=yes
3320 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3321 $glibc_header_dir/features.h > /dev/null \
3322 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3323 $glibc_header_dir/features.h > /dev/null; then
3324 gcc_cv_libc_provides_ssp=yes
3327 *) gcc_cv_libc_provides_ssp=no ;;
3329 if test x$gcc_cv_libc_provides_ssp = xyes; then
3330 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3331 [Define if your target C library provides stack protector support])
3334 # Check if TFmode long double should be used by default or not.
3335 # Some glibc targets used DFmode long double, but with glibc 2.4
3336 # and later they can use TFmode.
3338 powerpc*-*-*gnu* | \
3342 AC_ARG_WITH(long-double-128,
3343 [ --with-long-double-128 Use 128-bit long double by default.],
3344 gcc_cv_target_ldbl128="$with_long_double_128",
3345 [gcc_cv_target_ldbl128=no
3346 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3347 if test "x$with_sysroot" = x; then
3348 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3349 elif test "x$with_sysroot" = xyes; then
3350 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3352 glibc_header_dir="${with_sysroot}/usr/include"
3355 glibc_header_dir=/usr/include
3358 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3359 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3360 && gcc_cv_target_ldbl128=yes
3365 if test x$gcc_cv_target_ldbl128 = xyes; then
3366 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3367 [Define if TFmode long double should be the default])
3370 # Find out what GC implementation we want, or may, use.
3372 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3380 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3383 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3388 echo "Using $GGC for garbage collection."
3390 # Use the system's zlib library.
3392 zlibinc="-I\$(srcdir)/../zlib"
3393 AC_ARG_WITH(system-zlib,
3394 [ --with-system-zlib use installed libz],
3401 dnl Very limited version of automake's enable-maintainer-mode
3403 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3404 dnl maintainer-mode is disabled by default
3405 AC_ARG_ENABLE(maintainer-mode,
3406 [ --enable-maintainer-mode
3407 enable make rules and dependencies not useful
3408 (and sometimes confusing) to the casual installer],
3409 maintainer_mode=$enableval,
3412 AC_MSG_RESULT($maintainer_mode)
3414 if test "$maintainer_mode" = "yes"; then
3425 # Make empty files to contain the specs and options for each language.
3426 # Then add #include lines to for a compiler that has specs and/or options.
3432 # These (without "all_") are set in each config-lang.in.
3433 # `language' must be a single word so is spelled singularly.
3438 all_outputs='Makefile gccbug mklibgcc libada-mk'
3439 # List of language makefile fragments.
3441 # List of language subdirectory makefiles. Deprecated.
3443 # Files for gengtype
3444 all_gtfiles="$target_gtfiles"
3445 # Files for gengtype with language
3446 all_gtfiles_files_langs=
3447 all_gtfiles_files_files=
3449 # These are the languages that are set in --enable-languages,
3450 # and are available in the GCC tree.
3451 all_selected_languages=
3453 # Add the language fragments.
3454 # Languages are added via two mechanisms. Some information must be
3455 # recorded in makefile variables, these are defined in config-lang.in.
3456 # We accumulate them and plug them into the main Makefile.
3457 # The other mechanism is a set of hooks for each of the main targets
3458 # like `clean', `install', etc.
3460 language_hooks="Make-hooks"
3462 for lang in ${srcdir}/*/config-lang.in
3465 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3467 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3468 if test "x$lang_alias" = x
3470 echo "$lang doesn't set \$language." 1>&2
3473 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3474 subdirs="$subdirs $subdir"
3475 case ",$enable_languages," in
3477 all_selected_languages="$all_selected_languages $lang_alias"
3478 if test -f $srcdir/$subdir/lang-specs.h; then
3479 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3492 . ${srcdir}/$subdir/config-lang.in
3493 if test "x$language" = x
3495 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3500 case ",$enable_languages," in
3503 for i in $subdir_requires; do
3504 test -f "${srcdir}/$i/config-lang.in" && continue
3512 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3513 if test -f $srcdir/$subdir/lang.opt; then
3514 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3516 if test -f $srcdir/$subdir/$subdir-tree.def; then
3517 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3519 if test -f ${srcdir}/$subdir/Makefile.in
3520 then all_lang_makefiles="$subdir/Makefile"
3522 all_languages="$all_languages $language"
3523 if test "x$boot_language" = xyes
3525 all_boot_languages="$all_boot_languages $language"
3527 all_compilers="$all_compilers $compilers"
3528 all_stagestuff="$all_stagestuff $stagestuff"
3529 all_outputs="$all_outputs $outputs"
3530 all_gtfiles="$all_gtfiles $gtfiles"
3533 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3534 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3538 # Pick up gtfiles for c
3541 . ${srcdir}/c-config-lang.in
3542 all_gtfiles="$all_gtfiles $gtfiles"
3545 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3546 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3550 for language in $all_selected_languages
3552 check_languages="$check_languages check-$language"
3555 # We link each language in with a set of hooks, reached indirectly via
3556 # lang.${target}. Only do so for selected languages.
3560 target_list="all.cross start.encap rest.encap tags \
3561 install-common install-man install-info dvi pdf html \
3562 uninstall info man srcextra srcman srcinfo \
3563 mostlyclean clean distclean maintainer-clean \
3564 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3566 for t in $target_list
3569 for lang in $all_selected_languages
3573 echo "lang.$t: $x" >> Make-hooks
3582 echo "dir ." > .gdbinit
3583 echo "dir ${srcdir}" >> .gdbinit
3584 if test x$gdb_needs_out_file_path = xyes
3586 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3588 if test "x$subdirs" != x; then
3591 echo "dir ${srcdir}/$s" >> .gdbinit
3594 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3596 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3597 # absolute path for gcc_tooldir based on inserting the number of up-directory
3598 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3599 # $(libsubdir)/@(unlibsubdir) based path.
3600 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3601 # make and thus we'd get different behavior depending on where we built the
3603 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3604 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3606 changequote(<<, >>)dnl
3607 # An explanation of the sed strings:
3608 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3609 # -e 's|/$||' match a trailing forward slash and eliminates it
3610 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3611 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3613 # (*) Note this pattern overwrites the first character of the string
3614 # with a forward slash if one is not already present. This is not a
3615 # problem because the exact names of the sub-directories concerned is
3616 # unimportant, just the number of them matters.
3618 # The practical upshot of these patterns is like this:
3620 # prefix exec_prefix result
3621 # ------ ----------- ------
3623 # /foo/ /foo/bar ../
3624 # /foo /foo/bar/ ../
3625 # /foo/ /foo/bar/ ../
3626 # /foo /foo/bar/ugg ../../
3629 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3630 changequote([, ])dnl
3632 AC_SUBST(gcc_tooldir)
3635 # Find a directory in which to install a shared libgcc.
3637 AC_ARG_ENABLE(version-specific-runtime-libs,
3638 [ --enable-version-specific-runtime-libs
3639 specify that runtime libraries should be
3640 installed in a compiler-specific directory])
3642 AC_ARG_WITH(slibdir,
3643 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3644 slibdir="$with_slibdir",
3645 if test "${enable_version_specific_runtime_libs+set}" = set; then
3646 slibdir='$(libsubdir)'
3647 elif test "$host" != "$target"; then
3648 slibdir='$(build_tooldir)/lib'
3654 objdir=`${PWDCMD-pwd}`
3657 AC_ARG_WITH(datarootdir,
3658 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3659 datarootdir="\${prefix}/$with_datarootdir",
3660 datarootdir='$(prefix)/share')
3661 AC_SUBST(datarootdir)
3664 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3665 docdir="\${prefix}/$with_docdir",
3666 docdir='$(datarootdir)')
3669 AC_ARG_WITH(htmldir,
3670 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3671 htmldir="\${prefix}/$with_htmldir",
3672 htmldir='$(docdir)')
3675 # Substitute configuration variables
3678 AC_SUBST(all_boot_languages)
3679 AC_SUBST(all_compilers)
3680 AC_SUBST(all_gtfiles)
3681 AC_SUBST(all_gtfiles_files_langs)
3682 AC_SUBST(all_gtfiles_files_files)
3683 AC_SUBST(all_lang_makefrags)
3684 AC_SUBST(all_lang_makefiles)
3685 AC_SUBST(all_languages)
3686 AC_SUBST(all_selected_languages)
3687 AC_SUBST(all_stagestuff)
3688 AC_SUBST(build_exeext)
3689 AC_SUBST(build_install_headers_dir)
3690 AC_SUBST(build_xm_file_list)
3691 AC_SUBST(build_xm_include_list)
3692 AC_SUBST(build_xm_defines)
3693 AC_SUBST(check_languages)
3694 AC_SUBST(cc_set_by_configure)
3695 AC_SUBST(quoted_cc_set_by_configure)
3696 AC_SUBST(cpp_install_dir)
3697 AC_SUBST(xmake_file)
3698 AC_SUBST(tmake_file)
3699 AC_SUBST(extra_gcc_objs)
3700 AC_SUBST(extra_headers_list)
3701 AC_SUBST(extra_objs)
3702 AC_SUBST(extra_parts)
3703 AC_SUBST(extra_passes)
3704 AC_SUBST(extra_programs)
3705 AC_SUBST(float_h_file)
3706 AC_SUBST(gcc_config_arguments)
3707 AC_SUBST(gcc_gxx_include_dir)
3708 AC_SUBST(host_exeext)
3709 AC_SUBST(host_xm_file_list)
3710 AC_SUBST(host_xm_include_list)
3711 AC_SUBST(host_xm_defines)
3712 AC_SUBST(out_host_hook_obj)
3714 AC_SUBST(lang_opt_files)
3715 AC_SUBST(lang_specs_files)
3716 AC_SUBST(lang_tree_files)
3717 AC_SUBST(local_prefix)
3719 AC_SUBST(objc_boehm_gc)
3721 AC_SUBST(out_object_file)
3722 AC_SUBST(stage_prefix_set_by_configure)
3723 AC_SUBST(quoted_stage_prefix_set_by_configure)
3724 AC_SUBST(thread_file)
3725 AC_SUBST(tm_file_list)
3726 AC_SUBST(tm_include_list)
3727 AC_SUBST(tm_defines)
3728 AC_SUBST(tm_p_file_list)
3729 AC_SUBST(tm_p_include_list)
3730 AC_SUBST(xm_file_list)
3731 AC_SUBST(xm_include_list)
3732 AC_SUBST(xm_defines)
3733 AC_SUBST(c_target_objs)
3734 AC_SUBST(cxx_target_objs)
3735 AC_SUBST(target_cpu_default)
3737 AC_SUBST_FILE(language_hooks)
3740 if test x${build} = x${host} ; then
3741 if test x${host} = x${target} ; then
3742 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3744 echo "Links are now set up to build a cross-compiler" 1>&2
3745 echo " from ${host} to ${target}." 1>&2
3748 if test x${host} = x${target} ; then
3749 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3750 echo " for ${target}." 1>&2
3752 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3753 echo " from ${host} to ${target}." 1>&2
3757 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3758 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3760 # Configure the subdirectories
3761 # AC_CONFIG_SUBDIRS($subdirs)
3763 # Create the Makefile
3764 # and configure language subdirectories
3765 AC_CONFIG_FILES($all_outputs)
3767 AC_CONFIG_COMMANDS([default],
3769 case ${CONFIG_HEADERS} in
3770 *auto-host.h:config.in*)
3773 # Make sure all the subdirs exist.
3774 for d in $subdirs doc build
3776 test -d $d || mkdir $d
3778 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3779 # bootstrapping and the installation procedure can still use
3780 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3781 # FLAGS_TO_PASS has been modified to solve the problem there.
3782 # This is virtually a duplicate of what happens in configure.lang; we do
3783 # an extra check to make sure this only happens if ln -s can be used.
3786 for d in ${subdirs} ; do
3787 STARTDIR=`${PWDCMD-pwd}`
3789 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3792 $LN_S ../$t $t 2>/dev/null
3799 [subdirs='$subdirs'])