2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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, 59 Temple Place - Suite 330, 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 #Set to 1 on a release branch
36 # Determine the host, build, and target systems
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Determine the target- and build-specific subdirectories
47 # Set program_transform_name
50 # Check for bogus environment variables.
51 # Test if LIBRARY_PATH contains the notation for the current directory
52 # since this would lead to problems installing/building glibc.
53 # LIBRARY_PATH contains the current directory if one of the following
55 # - one of the terminals (":" and ";") is the first or last sign
56 # - two terminals occur directly after each other
57 # - the path contains an element with a dot in it
58 AC_MSG_CHECKING(LIBRARY_PATH variable)
60 case ${LIBRARY_PATH} in
61 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
62 library_path_setting="contains current directory"
65 library_path_setting="ok"
69 AC_MSG_RESULT($library_path_setting)
70 if test "$library_path_setting" != "ok"; then
72 *** LIBRARY_PATH shouldn't contain the current directory when
73 *** building gcc. Please change the environment variable
74 *** and run configure again.])
77 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
78 # since this would lead to problems installing/building glibc.
79 # GCC_EXEC_PREFIX contains the current directory if one of the following
81 # - one of the terminals (":" and ";") is the first or last sign
82 # - two terminals occur directly after each other
83 # - the path contains an element with a dot in it
84 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
86 case ${GCC_EXEC_PREFIX} in
87 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
88 gcc_exec_prefix_setting="contains current directory"
91 gcc_exec_prefix_setting="ok"
95 AC_MSG_RESULT($gcc_exec_prefix_setting)
96 if test "$gcc_exec_prefix_setting" != "ok"; then
98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
99 *** building gcc. Please change the environment variable
100 *** and run configure again.])
107 # Specify the local prefix
109 AC_ARG_WITH(local-prefix,
110 [ --with-local-prefix=DIR specifies directory to put local include],
111 [case "${withval}" in
112 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
114 *) local_prefix=$with_local_prefix ;;
117 # Default local prefix if it is empty
118 if test x$local_prefix = x; then
119 local_prefix=/usr/local
122 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
123 # passed in by the toplevel make and thus we'd get different behavior
124 # depending on where we built the sources.
126 # Specify the g++ header file directory
127 AC_ARG_WITH(gxx-include-dir,
128 [ --with-gxx-include-dir=DIR
129 specifies directory to put g++ header files],
130 [case "${withval}" in
131 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
133 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
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='${libsubdir}/include/c++'
140 topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
141 changequote(<<, >>)dnl
142 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 AC_MSG_CHECKING([whether a default linker was specified])
207 if test x"${DEFAULT_LINKER+set}" = x"set"; then
208 if test x"$gnu_ld_flag" = x"no"; then
209 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
211 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
217 # With demangler in GNU ld
218 AC_ARG_WITH(demangler-in-ld,
219 [ --with-demangler-in-ld try to use demangler in GNU ld.],
220 demangler_in_ld="$with_demangler_in_ld",
223 # ----------------------
224 # Find default assembler
225 # ----------------------
229 [ --with-gnu-as arrange to work with GNU as],
230 gas_flag="$with_gnu_as",
234 [ --with-as arrange to use the specified as (full pathname)],
235 DEFAULT_ASSEMBLER="$with_as")
236 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
237 if test ! -x "$DEFAULT_ASSEMBLER"; then
238 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
239 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
242 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
243 [Define to enable the use of a default assembler.])
246 AC_MSG_CHECKING([whether a default assembler was specified])
247 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
248 if test x"$gas_flag" = x"no"; then
249 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
251 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
261 # If a non-executable a.out is present (e.g. created by GNU as above even if
262 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
263 # file, even when creating an executable, so an execution test fails.
264 # Remove possible default executable files to avoid this.
266 # FIXME: This really belongs into AC_PROG_CC and can be removed once
267 # Autoconf includes it.
268 rm -f a.out a.exe b.out
270 # Find the native compiler
273 # autoconf is lame and doesn't give us any substitution variable for this.
274 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
275 NO_MINUS_C_MINUS_O=yes
277 OUTPUT_OPTION='-o $@'
279 AC_SUBST(NO_MINUS_C_MINUS_O)
280 AC_SUBST(OUTPUT_OPTION)
282 # -------------------------
283 # Check C compiler features
284 # -------------------------
291 # sizeof(char) is 1 by definition.
292 AC_CHECK_SIZEOF(void *)
293 AC_CHECK_SIZEOF(short)
295 AC_CHECK_SIZEOF(long)
296 if test $ac_cv_c_long_long = yes; then
297 AC_CHECK_SIZEOF(long long)
299 if test $ac_cv_c___int64 = yes; then
300 AC_CHECK_SIZEOF(__int64)
303 # ---------------------
304 # Warnings and checking
305 # ---------------------
307 # Check $CC warning features (if it's GCC).
308 # We want to use -pedantic, but we don't want warnings about
311 # So, we only use -pedantic if we can disable those warnings.
314 [whether ${CC} accepts -Wno-long-long],
315 [ac_cv_prog_cc_w_no_long_long],
316 [save_CFLAGS="$CFLAGS"
317 CFLAGS="-Wno-long-long"
318 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
319 [ac_cv_prog_cc_w_no_long_long=yes],
320 [ac_cv_prog_cc_w_no_long_long=no])
321 CFLAGS="$save_CFLAGS"
325 [whether ${CC} accepts -Wno-variadic-macros],
326 [ac_cv_prog_cc_w_no_variadic_macros],
327 [save_CFLAGS="$CFLAGS"
328 CFLAGS="-Wno-variadic-macros"
329 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
330 [ac_cv_prog_cc_w_no_variadic_macros=yes],
331 [ac_cv_prog_cc_w_no_variadic_macros=no])
332 CFLAGS="$save_CFLAGS"
336 if test $ac_cv_prog_cc_w_no_long_long = yes \
337 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
338 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
340 AC_SUBST(strict1_warn)
342 # Add -Wold-style-definition if it's accepted
344 [whether ${CC} accepts -Wold-style-definition],
345 [ac_cv_prog_cc_w_old_style_definition],
346 [save_CFLAGS="$CFLAGS"
347 CFLAGS="-Wold-style-definition"
348 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
349 [ac_cv_prog_cc_w_old_style_definition=yes],
350 [ac_cv_prog_cc_w_old_style_definition=no])
351 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
354 strict1_warn="${strict1_warn} -Wold-style-definition"
357 # Enable -Werror, period.
358 AC_ARG_ENABLE(werror_always,
359 [ --enable-werror-always enable -Werror always], [],
360 [enable_werror_always=no])
361 if test x${enable_werror_always} = xyes ; then
362 strict1_warn="${strict1_warn} -Werror"
366 # If the native compiler is GCC, we can enable warnings even in stage1.
367 # That's useful for people building cross-compilers, or just running a
370 if test "x$GCC" = "xyes"; then
371 warn_cflags='$(GCC_WARN_CFLAGS)'
373 AC_SUBST(warn_cflags)
375 # Enable -Werror in bootstrap stage2 and later.
376 AC_ARG_ENABLE(werror,
377 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
378 [if test x$is_release = x ; then
379 # Default to "yes" on development branches.
382 # Default to "no" on release branches.
385 if test x$enable_werror = xyes ; then
390 # Enable expensive internal checks
391 AC_ARG_ENABLE(checking,
392 [ --enable-checking[=LIST]
393 enable expensive run-time checks. With LIST,
394 enable only specific categories of checks.
395 Categories are: assert,fold,gc,gcac,misc,
396 rtlflag,rtl,tree,valgrind,release,yes,all;],
397 [ac_checking_flags="${enableval}"],[
398 # Determine the default checks.
399 if test x$is_release = x ; then
400 ac_checking_flags=yes
402 ac_checking_flags=release
410 ac_gc_always_collect=
412 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
413 for check in $ac_checking_flags
416 yes) ac_assert_checking=1 ; ac_checking=1 ;
417 ac_tree_checking=1 ; ac_gc_checking=1 ;
418 ac_rtlflag_checking=1 ;;
419 no) ac_assert_checking= ; ac_checking= ;
420 ac_tree_checking= ; ac_rtl_checking= ;
421 ac_rtlflag_checking= ; ac_gc_checking= ;
422 ac_gc_always_collect= ; ac_fold_checking= ;;
423 all) ac_assert_checking=1 ; ac_checking=1 ;
424 ac_tree_checking=1 ; ac_rtl_checking=1 ;
425 ac_rtlflag_checking=1 ; ac_gc_checking=1 ;
426 ac_gc_always_collect=1 ; ac_fold_checking=1 ;;
427 release) ac_assert_checking=1 ;;
428 assert) ac_assert_checking=1 ;;
429 fold) ac_fold_checking=1 ;;
430 gc) ac_gc_checking=1 ;;
431 gcac) ac_gc_always_collect=1 ;;
432 misc) ac_checking=1 ;;
433 rtlflag) ac_rtlflag_checking=1 ;;
434 rtl) ac_rtl_checking=1 ;;
435 tree) ac_tree_checking=1 ;;
436 valgrind) ac_checking_valgrind=1 ;;
437 *) AC_MSG_ERROR(unknown check category $check) ;;
443 if test x$ac_checking != x ; then
444 AC_DEFINE(ENABLE_CHECKING, 1,
445 [Define if you want more run-time sanity checks. This one gets a grab
446 bag of miscellaneous but relatively cheap checks.])
447 nocommon_flag=-fno-common
449 AC_SUBST(nocommon_flag)
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_tree_checking != x ; then
455 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
456 [Define if you want all operations on trees (the basic data
457 structure of the front ends) to be checked for dynamic type safety
458 at runtime. This is moderately expensive. The tree browser debugging
459 routines will also be enabled by this option.
461 TREEBROWSER=tree-browser.o
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_checking_valgrind != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
505 [#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
514 [#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 gcc_cv_header_memcheck_h=no)
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 AC_ARG_ENABLE(mapped-location,
547 [ --enable-mapped-location location_t is fileline integer cookie],,
548 enable_mapped_location=no)
550 if test "$enable_mapped_location" = yes ; then
551 AC_DEFINE(USE_MAPPED_LOCATION, 1,
552 [Define if location_t is fileline integer cookie.])
555 # Enable code coverage collection
556 AC_ARG_ENABLE(coverage,
557 [ --enable-coverage[=LEVEL]
558 enable compiler's code coverage collection.
559 Use to measure compiler performance and locate
560 unused parts of the compiler. With LEVEL, specify
561 optimization. Values are opt, noopt,
563 [case "${enableval}" in
565 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
568 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
571 # a.k.a. --disable-coverage
575 AC_MSG_ERROR(unknown coverage setting $enableval)
579 AC_SUBST(coverage_flags)
581 AC_ARG_ENABLE(gather-detailed-mem-stats,
582 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
583 [enable_gather_detailed_mem_stats=no])
584 if test x$enable_gather_detailed_mem_stats = xyes ; then
585 AC_DEFINE(GATHER_STATISTICS, 1,
586 [Define to enable detailed memory allocation stats gathering.])
589 # -------------------------------
590 # Miscenalleous configure options
591 # -------------------------------
595 [ --with-stabs arrange to use stabs instead of host debug format],
599 # Determine whether or not multilibs are enabled.
600 AC_ARG_ENABLE(multilib,
601 [ --enable-multilib enable library support for multiple ABIs],
602 [], [enable_multilib=yes])
603 AC_SUBST(enable_multilib)
605 # Enable __cxa_atexit for C++.
606 AC_ARG_ENABLE(__cxa_atexit,
607 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
611 # Pass with no value to take the default
612 # Pass with a value to specify a thread package
613 AC_ARG_ENABLE(threads,
614 [ --enable-threads enable thread usage for target GCC
615 --enable-threads=LIB use LIB thread package for target GCC],,
618 AC_ARG_ENABLE(objc-gc,
619 [ --enable-objc-gc enable the use of Boehm's garbage collector with
620 the GNU Objective-C runtime],
621 if test x$enable_objc_gc = xno; then
629 [ --with-dwarf2 force the default debug format to be DWARF 2],
630 dwarf2="$with_dwarf2",
633 AC_ARG_ENABLE(shared,
634 [ --disable-shared don't provide a shared libgcc],
636 case $enable_shared in
640 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
641 for pkg in $enableval; do
642 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
649 ], [enable_shared=yes])
650 AC_SUBST(enable_shared)
653 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
655 case ${with_sysroot} in
656 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
657 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
660 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
661 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
663 if test "x$exec_prefix" = xNONE; then
664 if test "x$prefix" = xNONE; then
665 test_prefix=/usr/local
670 test_prefix=$exec_prefix
672 case ${TARGET_SYSTEM_ROOT} in
673 "${test_prefix}"|"${test_prefix}/"*|\
674 '${exec_prefix}'|'${exec_prefix}/'*)
675 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
676 TARGET_SYSTEM_ROOT_DEFINE="$t"
681 TARGET_SYSTEM_ROOT_DEFINE=
682 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
684 AC_SUBST(TARGET_SYSTEM_ROOT)
685 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
686 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
688 # Build with intermodule optimisations
689 AC_ARG_ENABLE(intermodule,
690 [ --enable-intermodule build the compiler in one step],
691 [case ${enable_intermodule} in
692 yes) onestep="-onestep";;
698 # Sanity check enable_languages in case someone does not run the toplevel
699 # configure # script.
700 AC_ARG_ENABLE(languages,
701 [ --enable-languages=LIST specify which front-ends to build],
702 [case ,${enable_languages}, in
704 # go safe -- we cannot be much sure without the toplevel
706 # analysis of which target libs are present and usable
710 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
715 enable_languages=c,${enable_languages}
718 [enable_languages=c])
721 for lang in ${srcdir}/*/config-lang.in
724 # The odd quoting in the next line works around
725 # an apparent bug in bash 1.12 on linux.
727 ${srcdir}/[*]/config-lang.in) ;;
729 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
730 if test "x$lang_alias" = x
732 echo "$lang doesn't set \$language." 1>&2
735 case ",$enable_languages," in
737 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
745 # -------------------------
746 # Checks for other programs
747 # -------------------------
751 # Find some useful tools
753 # We need awk to create options.c and options.h.
754 # Bail out if it's missing.
756 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
764 # By default, the Darwin ranlib will not treat common symbols as
765 # definitions when building the archive table of contents. Other
766 # ranlibs do that; pass an option to the Darwin ranlib that makes
767 # it behave similarly.
773 AC_SUBST(ranlib_flags)
777 # See if cmp has --ignore-initial.
778 gcc_AC_PROG_CMP_IGNORE_INITIAL
780 # See if we have the mktemp command.
781 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
783 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
785 # See if makeinfo has been installed and is modern enough
786 # that we can use it.
787 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
788 [GNU texinfo.* \([0-9][0-9.]*\)],
790 if test $gcc_cv_prog_makeinfo_modern = no; then
791 MAKEINFO="$MISSING makeinfo"
793 *** Makeinfo is missing or too old.
794 *** Info documentation will not be built.])
801 # Is pod2man recent enough to regenerate manpages?
802 AC_MSG_CHECKING([for recent Pod::Man])
803 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
805 GENERATED_MANPAGES=generated-manpages
810 AC_SUBST(GENERATED_MANPAGES)
813 dnl Don't use AC_PROG_LEX; we insist on flex.
814 dnl LEXLIB is not useful in gcc.
815 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
818 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
820 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
821 # check for build == host before using them.
824 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
825 && test -d ../binutils ; then
826 NM='$(objdir)/../binutils/nm-new'
828 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
832 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
833 && test -d ../binutils ; then
834 AR='$(objdir)/../binutils/ar'
836 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
840 # --------------------
841 # Checks for C headers
842 # --------------------
844 AC_MSG_CHECKING(for GNU C library)
845 AC_CACHE_VAL(gcc_cv_glibc,
847 [#include <features.h>],[
848 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
849 #error Not a GNU C library system
853 AC_MSG_RESULT($gcc_cv_glibc)
854 if test $gcc_cv_glibc = yes; then
855 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
858 # Need to reject headers which give warnings, so that the -Werror bootstrap
859 # works later. *sigh* This needs to come before all header checks.
866 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
867 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
868 sys/resource.h sys/param.h sys/times.h sys/stat.h \
869 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
871 # Check for thread headers.
872 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
873 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
875 # These tests can't be done till we know if we have limits.h.
883 # Stage specific cflags for build.
889 stage1_cflags="-Wa,-J"
895 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
896 # sources; use -no-cpp-precomp to get to GNU cpp.
897 # Apple's GCC has bugs in designated initializer handling, so disable
899 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
902 AC_SUBST(stage1_cflags)
904 # These libraries may be used by collect2.
905 # We may need a special search path to get them linked.
906 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
908 for libs in '' -lld -lmld \
909 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
910 '-L/usr/lib/cmplrs/cc3.11 -lmld'
913 AC_TRY_LINK_FUNC(ldopen,
914 [gcc_cv_collect2_libs="$libs"; break])
917 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
918 case $gcc_cv_collect2_libs in
920 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
922 AC_SUBST(COLLECT2_LIBS)
924 # When building Ada code on Alpha, we need exc_resume which is usually in
925 # -lexc. So test for it.
928 AC_SEARCH_LIBS(exc_resume, exc)
931 AC_SUBST(GNAT_LIBEXC)
933 # Some systems put ldexp and frexp in libm instead of libc; assume
934 # they're both in the same place. jcf-dump needs them.
937 AC_SEARCH_LIBS(ldexp, m)
942 # Use <inttypes.h> only if it exists,
943 # doesn't clash with <sys/types.h>, and declares intmax_t.
944 AC_MSG_CHECKING(for inttypes.h)
945 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
947 [#include <sys/types.h>
948 #include <inttypes.h>],
950 [gcc_cv_header_inttypes_h=yes],
951 gcc_cv_header_inttypes_h=no)])
952 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
953 if test $gcc_cv_header_inttypes_h = yes; then
954 AC_DEFINE(HAVE_INTTYPES_H, 1,
955 [Define if you have a working <inttypes.h> header file.])
958 dnl Disabled until we have a complete test for buggy enum bitfields.
959 dnl gcc_AC_C_ENUM_BF_UNSIGNED
961 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
962 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
963 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
964 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
967 if test x$ac_cv_func_mbstowcs = xyes; then
968 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
969 [ AC_TRY_RUN([#include <stdlib.h>
975 gcc_cv_func_mbstowcs_works=yes,
976 gcc_cv_func_mbstowcs_works=no,
977 gcc_cv_func_mbstowcs_works=yes)])
978 if test x$gcc_cv_func_mbstowcs_works = xyes; then
979 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
980 [Define this macro if mbstowcs does not crash when its
981 first argument is NULL.])
985 AC_CHECK_TYPE(ssize_t, int)
987 # Try to determine the array type of the second argument of getgroups
988 # for the target system (int or gid_t).
990 if test "${target}" = "${build}"; then
991 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
994 # This condition may need some tweaking. It should include all
995 # targets where the array type of the second argument of getgroups
996 # is int and the type of gid_t is not equivalent to int.
997 *-*-sunos* | *-*-ultrix*)
998 TARGET_GETGROUPS_T=int
1001 TARGET_GETGROUPS_T=gid_t
1005 AC_SUBST(TARGET_GETGROUPS_T)
1007 gcc_AC_FUNC_PRINTF_PTR
1008 gcc_AC_FUNC_MMAP_BLACKLIST
1012 # Under VMS, vfork works very differently than on Unix. The standard test
1013 # won't work, and it isn't easily adaptable. It makes more sense to
1015 ac_cv_func_vfork_works=yes
1021 # Until we have in-tree GNU iconv:
1023 AC_SUBST(LIBICONV_DEP)
1029 # We will need to find libiberty.h and ansidecl.h
1030 saved_CFLAGS="$CFLAGS"
1031 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1032 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1033 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1034 fprintf_unlocked strstr errno snprintf vasprintf \
1035 malloc realloc calloc free basename getopt clock getpagesize, , ,[
1036 #include "ansidecl.h"
1037 #include "system.h"])
1039 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1040 #include "ansidecl.h"
1042 #ifdef HAVE_SYS_RESOURCE_H
1043 #include <sys/resource.h>
1048 #include "ansidecl.h"
1050 #ifdef HAVE_SYS_RESOURCE_H
1051 #include <sys/resource.h>
1053 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1054 [Define to \`long' if <sys/resource.h> doesn't define.])])
1056 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1057 #include "ansidecl.h"
1064 gcc_AC_CHECK_DECLS(times, , ,[
1065 #include "ansidecl.h"
1067 #ifdef HAVE_SYS_TIMES_H
1068 #include <sys/times.h>
1072 # More time-related stuff.
1073 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1075 #include "ansidecl.h"
1077 #ifdef HAVE_SYS_TIMES_H
1078 #include <sys/times.h>
1080 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1081 if test $ac_cv_struct_tms = yes; then
1082 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1083 [Define if <sys/times.h> defines struct tms.])
1086 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1087 # revisit after autoconf 2.50.
1088 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1090 #include "ansidecl.h"
1092 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1093 if test $gcc_cv_type_clock_t = yes; then
1094 AC_DEFINE(HAVE_CLOCK_T, 1,
1095 [Define if <time.h> defines clock_t.])
1098 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1099 CFLAGS="$saved_CFLAGS"
1101 gcc_AC_INITFINI_ARRAY
1103 # mkdir takes a single argument on some systems.
1104 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1112 # With Setjmp/Longjmp based exception handling.
1113 AC_ARG_ENABLE(sjlj-exceptions,
1114 [ --enable-sjlj-exceptions
1115 arrange to use setjmp/longjmp exception handling],
1116 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1117 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1118 [Define 0/1 to force the choice for exception handling model.])])
1120 # For platforms with the unwind ABI which includes an unwind library,
1121 # libunwind, we can choose to use the system libunwind.
1122 AC_ARG_WITH(system-libunwind,
1123 [ --with-system-libunwind use installed libunwind])
1125 # --------------------------------------------------------
1126 # Build, host, and target specific configuration fragments
1127 # --------------------------------------------------------
1129 # Collect build-machine-specific information.
1130 . ${srcdir}/config.build
1132 # Collect host-machine-specific information.
1133 . ${srcdir}/config.host
1137 # Collect target-machine-specific information.
1138 . ${srcdir}/config.gcc
1140 extra_objs="${host_extra_objs} ${extra_objs}"
1141 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1143 # Default the target-machine variables that were not explicitly set.
1144 if test x"$tm_file" = x
1145 then tm_file=$cpu_type/$cpu_type.h; fi
1147 if test x"$extra_headers" = x
1148 then extra_headers=; fi
1150 if test x$md_file = x
1151 then md_file=$cpu_type/$cpu_type.md; fi
1153 if test x$out_file = x
1154 then out_file=$cpu_type/$cpu_type.c; fi
1156 if test x"$tmake_file" = x
1157 then tmake_file=$cpu_type/t-$cpu_type
1160 if test x"$dwarf2" = xyes
1161 then tm_file="$tm_file tm-dwarf2.h"
1164 # Say what files are being used for the output code and MD file.
1165 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1166 echo "Using \`$srcdir/config/$md_file' as machine description file."
1168 # If any of the xm_file variables contain nonexistent files, warn
1169 # about them and drop them.
1172 for x in $build_xm_file; do
1173 if test -f $srcdir/config/$x
1175 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1181 for x in $host_xm_file; do
1182 if test -f $srcdir/config/$x
1184 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1190 for x in $xm_file; do
1191 if test -f $srcdir/config/$x
1193 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1199 for f in $tm_file; do
1202 if test $count = ax; then
1203 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1205 echo "Using the following target machine macro files:"
1206 for f in $tm_file; do
1207 echo " $srcdir/config/$f"
1211 if test x$need_64bit_hwint = xyes; then
1212 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1213 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1216 if test x$use_long_long_for_widest_fast_int = xyes; then
1217 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1218 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1219 efficiently supported by the host hardware.])
1223 for f in $host_xm_file; do
1226 if test $count = a; then
1228 elif test $count = ax; then
1229 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1231 echo "Using the following host machine macro files:"
1232 for f in $host_xm_file; do
1233 echo " $srcdir/config/$f"
1236 echo "Using ${out_host_hook_obj} for host machine hooks."
1238 if test "$host_xm_file" != "$build_xm_file"; then
1240 for f in $build_xm_file; do
1243 if test $count = a; then
1245 elif test $count = ax; then
1246 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1248 echo "Using the following build machine macro files:"
1249 for f in $build_xm_file; do
1250 echo " $srcdir/config/$f"
1259 # Check if a valid thread package
1260 case ${enable_threads} in
1263 target_thread_file='single'
1267 target_thread_file='single'
1269 aix | dce | gnat | irix | posix | rtems | \
1270 single | solaris | vxworks | win32 )
1271 target_thread_file=${enable_threads}
1274 echo "${enable_threads} is an unknown thread package" 1>&2
1279 if test x${thread_file} = x; then
1280 # No thread file set by target-specific clauses in config.gcc,
1281 # so use file chosen by default logic above
1282 thread_file=${target_thread_file}
1285 # Make gthr-default.h if we have a thread file.
1287 if test $thread_file != single; then
1288 rm -f gthr-default.h
1289 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1290 gthread_flags=-DHAVE_GTHR_DEFAULT
1292 AC_SUBST(gthread_flags)
1299 if test x$enable___cxa_atexit = xyes || \
1300 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1301 if test x$host = x$target; then
1302 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1303 [echo "__cxa_atexit can't be enabled on this target"])
1305 # We can't check for __cxa_atexit when building a cross, so assume
1309 if test x$use_cxa_atexit = xyes; then
1310 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1311 [Define if you want to use __cxa_atexit, rather than atexit, to
1312 register C++ destructors for local statics and global objects.
1313 This is essential for fully standards-compliant handling of
1314 destructors, but requires __cxa_atexit in libc.])
1318 # Look for a file containing extra machine modes.
1319 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1320 extra_modes_file='$(srcdir)'/config/${extra_modes}
1321 AC_SUBST(extra_modes_file)
1322 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1323 [Define to the name of a file containing a list of extra machine modes
1324 for this architecture.])
1327 # auto-host.h is the file containing items generated by autoconf and is
1328 # the first file included by config.h.
1329 # If host=build, it is correct to have bconfig include auto-host.h
1330 # as well. If host!=build, we are in error and need to do more
1331 # work to find out the build config parameters.
1332 if test x$host = x$build
1334 build_auto=auto-host.h
1336 # We create a subdir, then run autoconf in the subdir.
1337 # To prevent recursion we set host and build for the new
1338 # invocation of configure to the build for this invocation
1345 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1346 *) realsrcdir=../${srcdir};;
1348 saved_CFLAGS="${CFLAGS}"
1349 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1350 ${realsrcdir}/configure \
1351 --enable-languages=${enable_languages-all} \
1352 --target=$target_alias --host=$build_alias --build=$build_alias
1353 CFLAGS="${saved_CFLAGS}"
1355 # We just finished tests for the build machine, so rename
1356 # the file auto-build.h in the gcc directory.
1357 mv auto-host.h ../auto-build.h
1360 build_auto=auto-build.h
1362 AC_SUBST(build_subdir)
1364 tm_file="${tm_file} defaults.h"
1365 tm_p_file="${tm_p_file} tm-preds.h"
1366 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1367 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1368 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1369 # put this back in temporarily.
1370 xm_file="ansidecl.h ${xm_file}"
1376 # Get the version trigger filename from the toplevel
1377 if test "${with_gcc_version_trigger+set}" = set; then
1378 gcc_version_trigger=$with_gcc_version_trigger
1380 gcc_version_trigger=${srcdir}/version.c
1383 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1384 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1386 # Compile in configure arguments.
1387 if test -f configargs.h ; then
1388 # Being re-configured.
1389 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1390 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1392 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1395 # Double all backslashes and backslash all quotes to turn
1396 # gcc_config_arguments into a C string.
1397 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1398 $gcc_config_arguments
1400 gcc_config_arguments_str=`cat conftest.out`
1403 cat > configargs.h <<EOF
1404 /* Generated automatically. */
1405 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1406 static const char thread_model[] = "$thread_file";
1408 static const struct {
1409 const char *name, *value;
1410 } configure_default_options[] = $configure_default_options;
1414 # Internationalization
1416 VERSION="$gcc_version"
1417 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1418 [The name of this program for internationalization purposes.])
1422 ZW_GNU_GETTEXT_SISTER_DIR
1424 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1425 # -liconv on the link line twice.
1426 case "$LIBINTL" in *$LIBICONV*)
1430 # Windows32 Registry support for specifying GCC installation paths.
1431 AC_ARG_ENABLE(win32-registry,
1432 [ --disable-win32-registry
1433 disable lookup of installation paths in the
1434 Registry on Windows hosts
1435 --enable-win32-registry enable registry lookup (default)
1436 --enable-win32-registry=KEY
1437 use KEY instead of GCC version as the last portion
1438 of the registry key],,)
1440 win32 | pe | cygwin* | mingw32* | uwin*)
1441 AC_MSG_CHECKING(whether windows registry support is requested)
1442 if test "x$enable_win32_registry" != xno; then
1443 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1444 [Define to 1 if installation paths should be looked up in Windows32
1445 Registry. Ignored on non windows32 hosts.])
1447 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1452 # Check if user specified a different registry key.
1453 case "x${enable_win32_registry}" in
1456 gcc_cv_win32_registry_key="$VERSION"
1459 # no registry lookup.
1460 gcc_cv_win32_registry_key=''
1463 # user-specified key.
1464 gcc_cv_win32_registry_key="$enable_win32_registry"
1468 if test "x$enable_win32_registry" != xno; then
1469 AC_MSG_CHECKING(registry key on windows hosts)
1470 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1471 [Define to be the last portion of registry key on windows hosts.])
1472 AC_MSG_RESULT($gcc_cv_win32_registry_key)
1477 # Get an absolute path to the GCC top-level source directory
1478 holddir=`${PWDCMD-pwd}`
1480 topdir=`${PWDCMD-pwd}`
1483 # Conditionalize the makefile for this host machine.
1485 for f in ${host_xmake_file}
1487 if test -f ${srcdir}/config/$f
1489 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1493 # Conditionalize the makefile for this target machine.
1495 for f in ${tmake_file}
1497 if test -f ${srcdir}/config/$f
1499 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1502 tmake_file="${tmake_file_}"
1504 # If the host doesn't support symlinks, modify CC in
1505 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1506 # Otherwise, we can use "CC=$(CC)".
1510 cc_set_by_configure="\$(CC)"
1511 quoted_cc_set_by_configure="\$(CC)"
1512 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1513 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1516 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1517 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1518 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1519 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1523 out_object_file=`basename $out_file .c`.o
1527 for f in $tm_file; do
1530 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1531 tm_include_list="${tm_include_list} $f"
1534 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1535 tm_include_list="${tm_include_list} config/$f"
1542 for f in $tm_p_file; do
1545 tm_p_file_list="${tm_p_file_list} $f"
1546 tm_p_include_list="${tm_p_include_list} $f"
1549 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1550 tm_p_include_list="${tm_p_include_list} config/$f"
1556 for f in $xm_file; do
1559 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1560 xm_include_list="${xm_include_list} $f"
1563 xm_file_list="${xm_file_list} $f"
1564 xm_include_list="${xm_include_list} $f"
1567 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1568 xm_include_list="${xm_include_list} config/$f"
1574 host_xm_include_list=
1575 for f in $host_xm_file; do
1578 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1579 host_xm_include_list="${host_xm_include_list} $f"
1582 host_xm_file_list="${host_xm_file_list} $f"
1583 host_xm_include_list="${host_xm_include_list} $f"
1586 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1587 host_xm_include_list="${host_xm_include_list} config/$f"
1593 for f in $build_xm_file; do
1596 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1597 build_xm_include_list="${build_xm_include_list} $f"
1599 auto-build.h | auto-host.h )
1600 build_xm_file_list="${build_xm_file_list} $f"
1601 build_xm_include_list="${build_xm_include_list} $f"
1604 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1605 build_xm_include_list="${build_xm_include_list} config/$f"
1610 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1611 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1612 CROSS= AC_SUBST(CROSS)
1613 ALL=all.internal AC_SUBST(ALL)
1614 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1615 if test x$host != x$target
1617 CROSS="-DCROSS_COMPILE"
1619 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1620 case "$host","$target" in
1621 # Darwin crosses can use the host system's libraries and headers,
1622 # because of the fat library support. Of course, it must be the
1623 # same version of Darwin on both sides. Allow the user to
1624 # just say --target=foo-darwin without a version number to mean
1625 # "the version on this system".
1626 *-*-darwin*,*-*-darwin*)
1627 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1628 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1629 if test $hostos = $targetos -o $targetos = darwin ; then
1631 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1636 i?86-*-*,x86_64-*-* \
1637 | powerpc*-*-*,powerpc64*-*-*)
1638 CROSS="$CROSS -DNATIVE_CROSS" ;;
1640 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1641 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1642 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1645 # If this is a cross-compiler that does not
1646 # have its own set of headers then define
1649 # If this is using newlib, without having the headers available now,
1650 # then define inhibit_libc in LIBGCC2_CFLAGS.
1651 # This prevents libgcc2 from containing any code which requires libc
1654 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1655 test x$with_newlib = xyes ; } &&
1656 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1657 inhibit_libc=-Dinhibit_libc
1659 AC_SUBST(inhibit_libc)
1661 # When building gcc with a cross-compiler, we need to adjust things so
1662 # that the generator programs are still built with the native compiler.
1663 # Also, we cannot run fixincludes or fix-header.
1665 # These are the normal (build=host) settings:
1666 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1667 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1668 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1670 # Possibly disable fixproto, on a per-target basis.
1671 case ${use_fixproto} in
1676 STMP_FIXPROTO=stmp-fixproto
1679 AC_SUBST(STMP_FIXPROTO)
1681 # And these apply if build != host, or we are generating coverage data
1682 if test x$build != x$host || test "x$coverage_flags" != x
1684 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1686 if test "x$TARGET_SYSTEM_ROOT" = x; then
1687 STMP_FIXINC=stmp-install-fixinc
1688 if [ "x$STMP_FIXPROTO" != x ] ; then
1689 STMP_FIXPROTO=stmp-install-fixproto
1694 # When bootstrapping from the toplevel, only run fixincludes during stage1
1695 if test -d ../prev-gcc
1697 STMP_FIXINC=stmp-install-fixinc
1698 cp -R ../prev-gcc/include include
1701 # Expand extra_headers to include complete path.
1702 # This substitutes for lots of t-* files.
1704 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1705 for file in ${extra_headers} ; do
1706 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1709 # Define collect2 in Makefile.
1710 case $host_can_use_collect2 in
1712 *) collect2='collect2$(exeext)' ;;
1714 AC_SUBST([collect2])
1716 # Add a definition of USE_COLLECT2 if system wants one.
1717 case $use_collect2 in
1718 no) use_collect2= ;;
1721 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1722 xm_defines="${xm_defines} USE_COLLECT2"
1723 case $host_can_use_collect2 in
1725 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1731 # ---------------------------
1732 # Assembler & linker features
1733 # ---------------------------
1735 # Identify the assembler which will work hand-in-glove with the newly
1736 # built GCC, so that we can examine its features. This is the assembler
1737 # which will be driven by the driver program.
1739 # If build != host, and we aren't building gas in-tree, we identify a
1740 # build->target assembler and hope that it will have the same features
1741 # as the host->target assembler we'll be using.
1742 AC_MSG_CHECKING(what assembler to use)
1745 gcc_cv_gas_major_version=
1746 gcc_cv_gas_minor_version=
1747 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1748 if test -x "$DEFAULT_ASSEMBLER"; then
1749 gcc_cv_as="$DEFAULT_ASSEMBLER"
1750 elif test -x as$build_exeext; then
1751 # Build using assembler in the current directory.
1752 gcc_cv_as=./as$build_exeext
1753 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1754 && test -f ../gas/Makefile \
1755 && test x$build = x$host; then
1756 # Single tree build which includes gas. We want to prefer it
1757 # over whatever linker top-level may have detected, since
1758 # we'll use what we're building after installation anyway.
1760 _gcc_COMPUTE_GAS_VERSION
1761 rm -f as$build_exeext
1762 $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1763 in_tree_gas_is_elf=no
1764 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1765 || (grep 'obj_format = multi' ../gas/Makefile \
1766 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1768 in_tree_gas_is_elf=yes
1770 m4_pattern_allow([AS_FOR_TARGET])dnl
1771 elif test -x "$AS_FOR_TARGET"; then
1772 gcc_cv_as="$AS_FOR_TARGET"
1773 elif test -x "$AS" && test x$host = x$target; then
1777 if test "x$gcc_cv_as" = x; then
1778 # Search the same directories that the installed compiler will
1779 # search. Else we may find the wrong assembler and lose. If we
1780 # do not find a suitable assembler binary, then try the user's
1783 # Also note we have to check MD_EXEC_PREFIX before checking the
1784 # user's path. Unfortunately, there is no good way to get at the
1785 # value of MD_EXEC_PREFIX here. So we do a brute force search
1786 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1787 # to be fixed as part of the make/configure rewrite too.
1789 if test "x$exec_prefix" = xNONE; then
1790 if test "x$prefix" = xNONE; then
1791 test_prefix=/usr/local
1796 test_prefix=$exec_prefix
1799 # If the loop below does not find an assembler, then use whatever
1800 # one we can find in the users's path.
1802 if test "x$program_prefix" != xNONE; then
1803 gcc_cv_as=${program_prefix}as$build_exeext
1805 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1808 if test x$host = x$build; then
1809 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1810 $test_prefix/libexec/gcc/$target_noncanonical \
1811 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1812 /usr/lib/gcc/$target_noncanonical \
1813 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1814 $test_prefix/$target_noncanonical/bin"
1819 if test x$host = x$target; then
1820 test_dirs="$test_dirs \
1825 /bsd43/usr/lib/cmplrs/cc \
1826 /usr/cross64/usr/bin \
1827 /usr/lib/cmplrs/cc \
1828 /sysv/usr/lib/cmplrs/cc \
1829 /svr4/usr/lib/cmplrs/cc \
1833 for dir in $test_dirs; do
1834 if test -x $dir/as$build_exeext; then
1835 gcc_cv_as=$dir/as$build_exeext
1840 case $in_tree_gas in
1842 AC_MSG_RESULT("newly built gas")
1845 AC_MSG_RESULT($gcc_cv_as)
1849 # Identify the linker which will work hand-in-glove with the newly
1850 # built GCC, so that we can examine its features. This is the linker
1851 # which will be driven by the driver program.
1853 # If build != host, and we aren't building gas in-tree, we identify a
1854 # build->target linker and hope that it will have the same features
1855 # as the host->target linker we'll be using.
1856 AC_MSG_CHECKING(what linker to use)
1859 gcc_cv_gld_major_version=
1860 gcc_cv_gld_minor_version=
1861 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1862 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1863 if test -x "$DEFAULT_LINKER"; then
1864 gcc_cv_ld="$DEFAULT_LINKER"
1865 elif test -x collect-ld$build_exeext; then
1866 # Build using linker in the current directory.
1867 gcc_cv_ld=./collect-ld$build_exeext
1868 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1869 && test -f ../ld/Makefile \
1870 && test x$build = x$host; then
1871 # Single tree build which includes ld. We want to prefer it
1872 # over whatever linker top-level may have detected, since
1873 # we'll use what we're building after installation anyway.
1875 in_tree_ld_is_elf=no
1876 if (grep 'EMUL = .*elf' ../ld/Makefile \
1877 || grep 'EMUL = .*linux' ../ld/Makefile \
1878 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1879 in_tree_ld_is_elf=yes
1881 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
1884 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1886 if test x$gcc_cv_gld_version != x; then
1891 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1892 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1894 rm -f collect-ld$build_exeext
1895 $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1896 elif test -x "$LD_FOR_TARGET"; then
1897 gcc_cv_ld="$LD_FOR_TARGET"
1898 elif test -x "$LD" && test x$host = x$target; then
1902 if test "x$gcc_cv_ld" = x; then
1903 # Search the same directories that the installed compiler will
1904 # search. Else we may find the wrong linker and lose. If we
1905 # do not find a suitable linker binary, then try the user's
1908 # Also note we have to check MD_EXEC_PREFIX before checking the
1909 # user's path. Unfortunately, there is no good way to get at the
1910 # value of MD_EXEC_PREFIX here. So we do a brute force search
1911 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1912 # to be fixed as part of the make/configure rewrite too.
1914 if test "x$exec_prefix" = xNONE; then
1915 if test "x$prefix" = xNONE; then
1916 test_prefix=/usr/local
1921 test_prefix=$exec_prefix
1924 # If the loop below does not find an linker, then use whatever
1925 # one we can find in the users's path.
1927 if test "x$program_prefix" != xNONE; then
1928 gcc_cv_ld=${program_prefix}ld$build_exeext
1930 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1933 if test x$host = x$build; then
1934 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1935 $test_prefix/libexec/gcc/$target_noncanonical \
1936 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1937 /usr/lib/gcc/$target_noncanonical \
1938 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1939 $test_prefix/$target_noncanonical/bin"
1944 if test x$host = x$target; then
1945 test_dirs="$test_dirs \
1950 /bsd43/usr/lib/cmplrs/cc \
1951 /usr/cross64/usr/bin \
1952 /usr/lib/cmplrs/cc \
1953 /sysv/usr/lib/cmplrs/cc \
1954 /svr4/usr/lib/cmplrs/cc \
1958 for dir in $test_dirs; do
1959 if test -x $dir/ld$build_exeext; then
1960 gcc_cv_ld=$dir/ld$build_exeext
1967 AC_MSG_RESULT("newly built ld")
1970 AC_MSG_RESULT($gcc_cv_ld)
1974 # Figure out what nm we will be using.
1975 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1976 AC_MSG_CHECKING(what nm to use)
1978 if test -x nm$build_exeext; then
1979 gcc_cv_nm=./nm$build_exeext
1980 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1981 && test -f ../binutils/Makefile; then
1982 # Single tree build which includes binutils.
1984 gcc_cv_nm=./nm$build_exeext
1985 rm -f nm$build_exeext
1986 $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1987 elif test "x$program_prefix" != xNONE; then
1988 gcc_cv_nm=${program_prefix}nm$build_exeext
1990 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1993 yes) AC_MSG_RESULT("newly built nm") ;;
1994 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1997 # Figure out what objdump we will be using.
1998 AC_MSG_CHECKING(what objdump to use)
2000 if test -x objdump$build_exeext; then
2001 gcc_cv_objdump=./objdump$build_exeext
2002 elif test -f $gcc_cv_binutils_srcdir/configure.in \
2003 && test -f ../binutils/Makefile; then
2004 # Single tree build which includes binutils.
2006 gcc_cv_objdump=./objdump$build_exeext
2007 rm -f objdump$build_exeext
2008 $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2009 elif test "x$program_prefix" != xNONE; then
2010 gcc_cv_objdump=${program_prefix}objdump$build_exeext
2012 gcc_cv_objdump=`echo objdump | \
2013 sed "${program_transform_name}"`$build_exeext
2015 case $in_tree_objdump in
2016 yes) AC_MSG_RESULT("newly built objdump") ;;
2017 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2020 # Figure out what assembler alignment features are present.
2021 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2025 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2026 [Define if your assembler supports .balign and .p2align.])])
2028 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2031 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2032 [Define if your assembler supports specifying the maximum number
2033 of bytes to skip when using the GAS .p2align command.])])
2035 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2037 [conftest_label1: .word 0
2039 conftest_label2: .word 0
2041 [if test x$gcc_cv_nm != x; then
2042 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2043 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2044 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2046 else gcc_cv_as_subsection_m1=yes
2048 rm -f conftest.nm1 conftest.nm2
2050 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2051 [Define if your assembler supports .subsection and .subsection -1 starts
2052 emitting at the beginning of your section.])])
2054 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2057 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2059 # .hidden needs to be supported in both the assembler and the linker,
2060 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2061 # This is irritatingly difficult to feature test for; we have to check the
2062 # date string after the version number. If we've got an in-tree
2063 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2065 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2066 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2071 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2072 [if test $in_tree_ld = yes ; then
2074 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2075 && test $in_tree_ld_is_elf = yes; then
2076 gcc_cv_ld_hidden=yes
2079 gcc_cv_ld_hidden=yes
2080 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2081 if echo "$ld_ver" | grep GNU > /dev/null; then
2083 ld_vers=`echo $ld_ver | sed -n \
2084 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2085 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2086 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2087 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2088 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2089 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2090 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2091 if test 0"$ld_date" -lt 20020404; then
2092 if test -n "$ld_date"; then
2093 # If there was date string, but was earlier than 2002-04-04, fail
2095 elif test -z "$ld_vers"; then
2096 # If there was no date string nor ld version number, something is wrong
2099 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2100 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2101 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2102 test -z "$ld_vers_patch" && ld_vers_patch=0
2103 if test "$ld_vers_major" -lt 2; then
2105 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2106 gcc_cv_ld_hidden="no"
2107 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2115 hppa64*-*-hpux* | ia64*-*-hpux*)
2116 gcc_cv_ld_hidden=yes
2124 libgcc_visibility=no
2125 AC_SUBST(libgcc_visibility)
2126 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2127 libgcc_visibility=yes
2128 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2129 [Define if your assembler and linker support .hidden.])
2132 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2133 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2141 [# GAS versions before 2.11 do not support uleb128,
2142 # despite appearing to.
2143 # ??? There exists an elf-specific test that will crash
2144 # the assembler. Perhaps it's better to figure out whether
2145 # arbitrary sections are supported and try the test.
2146 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2147 if echo "$as_ver" | grep GNU > /dev/null; then
2149 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2150 as_major=`echo $as_ver | sed 's/\..*//'`
2151 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2153 if test $as_major -eq 2 && test $as_minor -lt 11
2155 else gcc_cv_as_leb128=yes
2158 [AC_DEFINE(HAVE_AS_LEB128, 1,
2159 [Define if your assembler supports .sleb128 and .uleb128.])])
2161 # GAS versions up to and including 2.11.0 may mis-optimize
2163 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2171 .section .eh_frame,"aw",@progbits
2173 .4byte .LECIE1-.LSCIE1
2187 .4byte .LEFDE1-.LASFDE1
2189 .4byte .LASFDE1-__FRAME_BEGIN__
2197 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2198 cat > conftest.lit <<EOF
2199 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2200 0010 01000000 12000000 18000000 00000000 ................
2201 0020 08000000 04080000 0044 .........D @&t@
2203 cat > conftest.big <<EOF
2204 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2205 0010 00000001 00000012 00000018 00000000 ................
2206 0020 00000008 04000000 0844 .........D @&t@
2208 # If the assembler didn't choke, and we can objdump,
2209 # and we got the correct data, then succeed.
2210 if test x$gcc_cv_objdump != x \
2211 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2212 | tail -3 > conftest.got \
2213 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2214 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2216 gcc_cv_as_eh_frame=yes
2217 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2218 gcc_cv_as_eh_frame=buggy
2220 # Uh oh, what do we do now?
2221 gcc_cv_as_eh_frame=no
2224 if test $gcc_cv_as_eh_frame = buggy; then
2225 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2226 [Define if your assembler mis-optimizes .eh_frame data.])
2229 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2230 [elf,2,12,0], [--fatal-warnings],
2231 [.section .rodata.str, "aMS", @progbits, 1])
2232 if test $gcc_cv_as_shf_merge = no; then
2233 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2234 [elf,2,12,0], [--fatal-warnings],
2235 [.section .rodata.str, "aMS", %progbits, 1])
2237 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2238 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2239 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2241 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2242 [elf,2,15,91], [--fatal-warnings],
2243 [.section .text,"axG",@progbits,.foo,comdat])
2244 if test $gcc_cv_as_comdat_group = yes; then
2245 gcc_cv_as_comdat_group_percent=no
2247 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2248 [elf,2,15,91], [--fatal-warnings],
2249 [.section .text,"axG",%progbits,.foo,comdat])
2251 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2252 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2253 [Define 0/1 if your assembler supports COMDAT group.])
2255 # Thread-local storage - the check is heavily parametrized.
2264 .section ".tdata","awT",@progbits
2267 ldq $27,__tls_get_addr($29) !literal!1
2268 lda $16,foo($29) !tlsgd!1
2269 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2270 ldq $27,__tls_get_addr($29) !literal!2
2271 lda $16,foo($29) !tlsldm!2
2272 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2273 ldq $1,foo($29) !gotdtprel
2274 ldah $2,foo($29) !dtprelhi
2275 lda $3,foo($2) !dtprello
2276 lda $4,foo($29) !dtprel
2277 ldq $1,foo($29) !gottprel
2278 ldah $2,foo($29) !tprelhi
2279 lda $3,foo($2) !tprello
2280 lda $4,foo($29) !tprel'
2283 tls_as_opt=--fatal-warnings
2287 .section ".tdata","awT",@progbits
2291 leal foo@TLSGD(,%ebx,1), %eax
2292 leal foo@TLSLDM(%ebx), %eax
2293 leal foo@DTPOFF(%eax), %edx
2294 movl foo@GOTTPOFF(%ebx), %eax
2295 subl foo@GOTTPOFF(%ebx), %eax
2296 addl foo@GOTNTPOFF(%ebx), %eax
2297 movl foo@INDNTPOFF, %eax
2298 movl $foo@TPOFF, %eax
2299 subl $foo@TPOFF, %eax
2300 leal foo@NTPOFF(%ecx), %eax'
2303 tls_as_opt=--fatal-warnings
2307 .section ".tdata","awT",@progbits
2311 leaq foo@TLSGD(%rip), %rdi
2312 leaq foo@TLSLD(%rip), %rdi
2313 leaq foo@DTPOFF(%rax), %rdx
2314 movq foo@GOTTPOFF(%rip), %rax
2315 movq $foo@TPOFF, %rax'
2318 tls_as_opt=--fatal-warnings
2322 .section ".tdata","awT",@progbits
2325 addl r16 = @ltoff(@dtpmod(foo#)), gp
2326 addl r17 = @ltoff(@dtprel(foo#)), gp
2327 addl r18 = @ltoff(@tprel(foo#)), gp
2328 addl r19 = @dtprel(foo#), gp
2329 adds r21 = @dtprel(foo#), r13
2330 movl r23 = @dtprel(foo#)
2331 addl r20 = @tprel(foo#), gp
2332 adds r22 = @tprel(foo#), r13
2333 movl r24 = @tprel(foo#)'
2336 tls_as_opt=--fatal-warnings
2340 .section ".tdata","awT",@progbits
2348 addi 3,31,ld0@got@tlsgd
2350 addi 3,31,x1@got@tlsld
2353 addis 9,3,x2@dtprel@ha
2354 addi 9,9,x2@dtprel@l
2355 lwz 9,x3@got@tprel(31)
2358 addis 9,2,x2@tprel@ha
2359 addi 9,9,x2@tprel@l'
2362 tls_as_opt="-a32 --fatal-warnings"
2366 .section ".tdata","awT",@progbits
2374 addi 3,2,ld0@got@tlsgd
2380 addi 3,2,x1@got@tlsld
2386 addis 9,3,x2@dtprel@ha
2387 addi 9,9,x2@dtprel@l
2390 ld 9,x3@got@dtprel(2)
2396 tls_as_opt="-a64 --fatal-warnings"
2400 .section ".tdata","awT",@progbits
2409 l %r1,foo@GOTNTPOFF(%r12)
2410 l %r1,0(%r1):tls_load:foo
2411 bas %r14,0(%r1,%r13):tls_gdcall:foo
2412 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2415 tls_as_opt="-m31 --fatal-warnings"
2419 .section ".tdata","awT",@progbits
2427 lg %r1,foo@GOTNTPOFF(%r12)
2428 larl %r1,foo@INDNTPOFF
2429 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2430 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2433 tls_as_opt="-m64 -Aesame --fatal-warnings"
2435 sh-*-* | sh[34]-*-*)
2437 .section ".tdata","awT",@progbits
2447 tls_as_opt=--fatal-warnings
2451 sparc*-sun-solaris2.*)
2458 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2460 .section ".tdata",#alloc,#write,#tls
2463 sethi %tgd_hi22(foo), %o0
2464 add %o0, %tgd_lo10(foo), %o1
2465 add %l7, %o1, %o0, %tgd_add(foo)
2466 call __tls_get_addr, %tgd_call(foo)
2467 sethi %tldm_hi22(foo), %l1
2468 add %l1, %tldm_lo10(foo), %l2
2469 add %l7, %l2, %o0, %tldm_add(foo)
2470 call __tls_get_addr, %tldm_call(foo)
2471 sethi %tldo_hix22(foo), %l3
2472 xor %l3, %tldo_lox10(foo), %l4
2473 add %o0, %l4, %l5, %tldo_add(foo)
2474 sethi %tie_hi22(foo), %o3
2475 add %o3, %tie_lo10(foo), %o3
2476 ld [%l7 + %o3], %o2, %tie_ld(foo)
2477 add %g7, %o2, %o4, %tie_add(foo)
2478 sethi %tle_hix22(foo), %l1
2479 xor %l1, %tle_lox10(foo), %o5
2480 ld [%g7 + %o5], %o1'
2485 .section ".tdata","awT",@progbits
2488 sethi %tgd_hi22(foo), %o0
2489 add %o0, %tgd_lo10(foo), %o1
2490 add %l7, %o1, %o0, %tgd_add(foo)
2491 call __tls_get_addr, %tgd_call(foo)
2492 sethi %tldm_hi22(foo), %l1
2493 add %l1, %tldm_lo10(foo), %l2
2494 add %l7, %l2, %o0, %tldm_add(foo)
2495 call __tls_get_addr, %tldm_call(foo)
2496 sethi %tldo_hix22(foo), %l3
2497 xor %l3, %tldo_lox10(foo), %l4
2498 add %o0, %l4, %l5, %tldo_add(foo)
2499 sethi %tie_hi22(foo), %o3
2500 add %o3, %tie_lo10(foo), %o3
2501 ld [%l7 + %o3], %o2, %tie_ld(foo)
2502 add %g7, %o2, %o4, %tie_add(foo)
2503 sethi %tle_hix22(foo), %l1
2504 xor %l1, %tle_lox10(foo), %o5
2505 ld [%g7 + %o5], %o1'
2508 tls_as_opt="-32 --fatal-warnings"
2513 if test -z "$tls_first_major"; then
2514 : # If we don't have a check, assume no support.
2516 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2517 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2518 [AC_DEFINE(HAVE_AS_TLS, 1,
2519 [Define if your assembler supports thread-local storage.])])
2522 # Target-specific assembler checks.
2524 if test x"$demangler_in_ld" = xyes; then
2525 AC_MSG_CHECKING(linker --demangle support)
2526 gcc_cv_ld_demangle=no
2527 if test $in_tree_ld = yes; then
2528 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2529 gcc_cv_ld_demangle=yes
2531 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2532 # Check if the GNU linker supports --demangle option
2533 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2534 gcc_cv_ld_demangle=yes
2537 if test x"$gcc_cv_ld_demangle" = xyes; then
2538 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2539 [Define if your linker supports --demangle option.])
2541 AC_MSG_RESULT($gcc_cv_ld_demangle)
2545 # All TARGET_ABI_OSF targets.
2546 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2547 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2548 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2551 extbl $3, $2, $3 !lituse_bytoff!1
2552 ldq $2, a($29) !literal!1
2553 ldq $4, b($29) !literal!2
2554 ldq_u $3, 0($2) !lituse_base!1
2555 ldq $27, f($29) !literal!5
2556 jsr $26, ($27), f !lituse_jsr!5
2557 ldah $29, 0($26) !gpdisp!3
2558 lda $0, c($29) !gprel
2559 ldah $1, d($29) !gprelhigh
2560 lda $1, d($1) !gprellow
2561 lda $29, 0($29) !gpdisp!3],,
2562 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2563 [Define if your assembler supports explicit relocations.])])
2567 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2568 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2569 [-no-mul-bug-abort], [.text],,
2570 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2571 [Define if your assembler supports the -no-mul-bug-abort option.])])
2575 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2576 [.register %g2, #scratch],,
2577 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2578 [Define if your assembler supports .register.])])
2580 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2582 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2583 [Define if your assembler supports -relax option.])])
2585 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2586 gcc_cv_as_sparc_ua_pcrel,,
2594 .uaword %r_disp32(foo)],
2595 [if test x$gcc_cv_ld != x \
2596 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2597 gcc_cv_as_sparc_ua_pcrel=yes
2600 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2601 [Define if your assembler and linker support unaligned PC relative relocs.])
2603 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2604 gcc_cv_as_sparc_ua_pcrel_hidden,,
2609 .uaword %r_disp32(foo)
2610 .byte 0x32, 0x33, 0x34
2615 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2616 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2617 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2618 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2619 if $gcc_cv_objdump -R conftest 2> /dev/null \
2620 | grep 'DISP32' > /dev/null 2>&1; then
2623 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2627 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2628 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2629 ]) # unaligned pcrel relocs
2631 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2632 gcc_cv_as_sparc_offsetable_lo10,,
2635 or %g1, %lo(ab) + 12, %g1
2636 or %g1, %lo(ab + 12), %g1],
2637 [if test x$gcc_cv_objdump != x \
2638 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2639 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2640 gcc_cv_as_offsetable_lo10=yes
2642 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2643 [Define if your assembler supports offsetable %lo().])])
2647 i[34567]86-*-* | x86_64-*-*)
2650 cygwin* | pe | mingw32*)
2651 # Used for DWARF 2 in PE
2652 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2653 gcc_cv_as_ix86_pe_secrel32,
2659 [if test x$gcc_cv_ld != x \
2660 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2661 gcc_cv_as_ix86_pe_secrel32=yes
2664 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2665 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2669 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2670 gcc_cv_as_ix86_filds_fists,
2671 [2,9,0],, [filds mem; fists mem],,
2672 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2673 [Define if your assembler uses the new HImode fild and fist notation.])])
2675 gcc_GAS_CHECK_FEATURE([cmov syntax],
2676 gcc_cv_as_ix86_cmov_sun_syntax,,,
2677 [cmovl.l %edx, %eax],,
2678 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2679 [Define if your assembler supports the Sun syntax for cmov.])])
2681 # This one is used unconditionally by i386.[ch]; it is to be defined
2682 # to 1 if the feature is present, 0 otherwise.
2683 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2684 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2690 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2691 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2692 [Define true if the assembler supports '.long foo@GOTOFF'.])
2696 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2697 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2699 addl r15 = @ltoffx(x#), gp
2701 ld8.mov r16 = [[r15]], x#],,
2702 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2703 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2709 *-*-aix*) conftest_s=' .csect .text[[PR]]
2711 *-*-darwin*) conftest_s=' .text
2713 *) conftest_s=' .machine power4
2718 gcc_GAS_CHECK_FEATURE([mfcr field support],
2719 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2721 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2722 [Define if your assembler supports mfcr field.])])
2726 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2727 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2728 [ lw $4,%gp_rel(foo)($4)],,
2729 [if test x$target_cpu_default = x
2730 then target_cpu_default=MASK_EXPLICIT_RELOCS
2731 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2734 if test x$gas_flag = xyes \
2735 || test x"$host" != x"$build" \
2736 || test ! -x "$gcc_cv_as" \
2737 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2740 echo "*** This configuration requires the GNU assembler" >&2
2745 # ??? Not all targets support dwarf2 debug_line, even within a version
2746 # of gas. Moreover, we need to emit a valid instruction to trigger any
2747 # info to the output file. So, as supported targets are added to gas 2.11,
2748 # add some instruction here to (also) show we expect this might work.
2749 # ??? Once 2.11 is released, probably need to add first known working
2750 # version to the per-target configury.
2752 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2753 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2754 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2757 ia64*-*-* | s390*-*-*)
2764 if test x"$insn" != x; then
2766 .file 1 \"conftest.s\"
2769 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2770 gcc_cv_as_dwarf2_debug_line,
2771 [elf,2,11,0],, [$conftest_s],
2772 [# ??? This fails with non-gnu grep. Maybe use objdump?
2773 if grep debug_line conftest.o > /dev/null 2>&1; then
2774 gcc_cv_as_dwarf2_debug_line=yes
2777 # The .debug_line file table must be in the exact order that
2778 # we specified the files, since these indices are also used
2779 # by DW_AT_decl_file. Approximate this test by testing if
2780 # the assembler bitches if the same index is assigned twice.
2781 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2782 gcc_cv_as_dwarf2_file_buggy,,,
2786 if test $gcc_cv_as_dwarf2_debug_line = yes \
2787 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2788 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2789 [Define if your assembler supports dwarf2 .file/.loc directives,
2790 and preserves file table indices exactly as given.])
2793 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2794 gcc_cv_as_gdwarf2_flag,
2795 [elf,2,11,0], [--gdwarf2], [$insn],,
2796 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2797 [Define if your assembler supports the --gdwarf2 option.])])
2799 gcc_GAS_CHECK_FEATURE([--gstabs option],
2800 gcc_cv_as_gstabs_flag,
2801 [elf,2,11,0], [--gstabs], [$insn],
2802 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2803 # and warns about it, but still exits successfully. So check for
2805 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2807 else gcc_cv_as_gstabs_flag=yes
2809 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2810 [Define if your assembler supports the --gstabs option.])])
2813 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2814 gcc_cv_ld_ro_rw_mix=unknown
2815 if test $in_tree_ld = yes ; then
2816 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2817 && test $in_tree_ld_is_elf = yes; then
2818 gcc_cv_ld_ro_rw_mix=read-write
2820 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2821 echo '.section myfoosect, "a"' > conftest1.s
2822 echo '.section myfoosect, "aw"' > conftest2.s
2823 echo '.byte 1' >> conftest2.s
2824 echo '.section myfoosect, "a"' > conftest3.s
2825 echo '.byte 0' >> conftest3.s
2826 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2827 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2828 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2829 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2830 conftest2.o conftest3.o > /dev/null 2>&1; then
2831 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2832 | sed -e '/myfoosect/!d' -e N`
2833 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2834 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2835 gcc_cv_ld_ro_rw_mix=read-only
2837 gcc_cv_ld_ro_rw_mix=read-write
2842 rm -f conftest.* conftest[123].*
2845 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2846 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2847 [Define if your linker links a mix of read-only
2848 and read-write sections into a read-write section.])
2850 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2852 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2853 gcc_cv_ld_eh_frame_hdr=no
2854 if test $in_tree_ld = yes ; then
2855 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2856 && test $in_tree_ld_is_elf = yes; then
2857 gcc_cv_ld_eh_frame_hdr=yes
2859 elif test x$gcc_cv_ld != x; then
2860 # Check if linker supports --eh-frame-hdr option
2861 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2862 gcc_cv_ld_eh_frame_hdr=yes
2865 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2866 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2867 [Define if your linker supports --eh-frame-hdr option.])
2869 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2871 AC_MSG_CHECKING(linker position independent executable support)
2873 if test $in_tree_ld = yes ; then
2874 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2875 && test $in_tree_ld_is_elf = yes; then
2878 elif test x$gcc_cv_ld != x; then
2879 # Check if linker supports -pie option
2880 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2884 if test x"$gcc_cv_ld_pie" = xyes; then
2885 AC_DEFINE(HAVE_LD_PIE, 1,
2886 [Define if your linker supports -pie option.])
2888 AC_MSG_RESULT($gcc_cv_ld_pie)
2894 AC_CACHE_CHECK(linker --as-needed support,
2895 gcc_cv_ld_as_needed,
2896 [gcc_cv_ld_as_needed=no
2897 if test $in_tree_ld = yes ; then
2898 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2899 && test $in_tree_ld_is_elf = yes; then
2900 gcc_cv_ld_as_needed=yes
2902 elif test x$gcc_cv_ld != x; then
2903 # Check if linker supports --as-needed and --no-as-needed options
2904 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2905 gcc_cv_ld_as_needed=yes
2909 if test x"$gcc_cv_ld_as_needed" = xyes; then
2910 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2911 [Define if your linker supports --as-needed and --no-as-needed options.])
2915 powerpc64*-*-linux*)
2916 AC_CACHE_CHECK(linker support for omitting dot symbols,
2917 gcc_cv_ld_no_dot_syms,
2918 [gcc_cv_ld_no_dot_syms=no
2919 if test $in_tree_ld = yes ; then
2920 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2921 gcc_cv_ld_no_dot_syms=yes
2923 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2924 cat > conftest1.s <<EOF
2928 cat > conftest2.s <<EOF
2929 .section ".opd","aw"
2934 .quad .LEfoo,.TOC.@tocbase,0
2940 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2941 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2942 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2943 gcc_cv_ld_no_dot_syms=yes
2945 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2948 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2949 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2950 [Define if your PowerPC64 linker only needs function descriptor syms.])
2955 if test x$with_sysroot = x && test x$host = x$target \
2956 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2957 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2958 [Define to PREFIX/include if cpp should also search that directory.])
2961 # Find out what GC implementation we want, or may, use.
2963 [ --with-gc={page,zone} choose the garbage collection mechanism to use
2970 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2975 echo "Using $GGC for garbage collection."
2977 # Use the system's zlib library.
2979 zlibinc="-I\$(srcdir)/../zlib"
2980 AC_ARG_WITH(system-zlib,
2981 [ --with-system-zlib use installed libz],
2988 dnl Very limited version of automake's enable-maintainer-mode
2990 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2991 dnl maintainer-mode is disabled by default
2992 AC_ARG_ENABLE(maintainer-mode,
2993 [ --enable-maintainer-mode
2994 enable make rules and dependencies not useful
2995 (and sometimes confusing) to the casual installer],
2996 maintainer_mode=$enableval,
2999 AC_MSG_RESULT($maintainer_mode)
3001 if test "$maintainer_mode" = "yes"; then
3012 # Make empty files to contain the specs and options for each language.
3013 # Then add #include lines to for a compiler that has specs and/or options.
3018 for subdir in . $subdirs
3020 if test -f $srcdir/$subdir/lang.opt; then
3021 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3023 if test -f $srcdir/$subdir/lang-specs.h; then
3024 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3026 if test -f $srcdir/$subdir/$subdir-tree.def; then
3027 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3031 # These (without "all_") are set in each config-lang.in.
3032 # `language' must be a single word so is spelled singularly.
3037 all_outputs='Makefile gccbug mklibgcc mkheaders libada-mk'
3038 # List of language makefile fragments.
3040 # List of language subdirectory makefiles. Deprecated.
3042 # Files for gengtype
3043 all_gtfiles="$target_gtfiles"
3044 # Files for gengtype with language
3045 all_gtfiles_files_langs=
3046 all_gtfiles_files_files=
3048 # Add the language fragments.
3049 # Languages are added via two mechanisms. Some information must be
3050 # recorded in makefile variables, these are defined in config-lang.in.
3051 # We accumulate them and plug them into the main Makefile.
3052 # The other mechanism is a set of hooks for each of the main targets
3053 # like `clean', `install', etc.
3055 language_hooks="Make-hooks"
3065 . ${srcdir}/$s/config-lang.in
3066 if test "x$language" = x
3068 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3071 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3072 if test -f ${srcdir}/$s/Makefile.in
3073 then all_lang_makefiles="$s/Makefile"
3075 all_languages="$all_languages $language"
3076 if test "x$boot_language" = xyes
3078 all_boot_languages="$all_boot_languages $language"
3080 all_compilers="$all_compilers $compilers"
3081 all_stagestuff="$all_stagestuff $stagestuff"
3082 all_outputs="$all_outputs $outputs"
3083 all_gtfiles="$all_gtfiles $gtfiles"
3086 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3087 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3091 # Pick up gtfiles for c
3094 . ${srcdir}/c-config-lang.in
3095 all_gtfiles="$all_gtfiles $gtfiles"
3098 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3099 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3103 for language in $all_languages
3105 check_languages="$check_languages check-$language"
3108 # We link each language in with a set of hooks, reached indirectly via
3113 target_list="all.build all.cross start.encap rest.encap tags \
3114 install-normal install-common install-man \
3115 uninstall info man srcextra srcman srcinfo \
3116 mostlyclean clean distclean maintainer-clean \
3117 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3118 for t in $target_list
3121 for lang in $all_languages
3125 echo "lang.$t: $x" >> Make-hooks
3134 echo "dir ." > .gdbinit
3135 echo "dir ${srcdir}" >> .gdbinit
3136 if test x$gdb_needs_out_file_path = xyes
3138 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3140 if test "x$subdirs" != x; then
3143 echo "dir ${srcdir}/$s" >> .gdbinit
3146 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3148 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3149 # absolute path for gcc_tooldir based on inserting the number of up-directory
3150 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3151 # $(libsubdir)/@(unlibsubdir) based path.
3152 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3153 # make and thus we'd get different behavior depending on where we built the
3155 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3156 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3158 changequote(<<, >>)dnl
3159 # An explanation of the sed strings:
3160 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3161 # -e 's|/$||' match a trailing forward slash and eliminates it
3162 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3163 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3165 # (*) Note this pattern overwrites the first character of the string
3166 # with a forward slash if one is not already present. This is not a
3167 # problem because the exact names of the sub-directories concerned is
3168 # unimportant, just the number of them matters.
3170 # The practical upshot of these patterns is like this:
3172 # prefix exec_prefix result
3173 # ------ ----------- ------
3175 # /foo/ /foo/bar ../
3176 # /foo /foo/bar/ ../
3177 # /foo/ /foo/bar/ ../
3178 # /foo /foo/bar/ugg ../../
3181 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3182 changequote([, ])dnl
3184 AC_SUBST(gcc_tooldir)
3187 # Find a directory in which to install a shared libgcc.
3189 AC_ARG_ENABLE(version-specific-runtime-libs,
3190 [ --enable-version-specific-runtime-libs
3191 specify that runtime libraries should be
3192 installed in a compiler-specific directory])
3194 AC_ARG_WITH(slibdir,
3195 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3196 slibdir="$with_slibdir",
3197 if test "${enable_version_specific_runtime_libs+set}" = set; then
3198 slibdir='$(libsubdir)'
3199 elif test "$host" != "$target"; then
3200 slibdir='$(build_tooldir)/lib'
3206 objdir=`${PWDCMD-pwd}`
3209 # Substitute configuration variables
3212 AC_SUBST(all_boot_languages)
3213 AC_SUBST(all_compilers)
3214 AC_SUBST(all_gtfiles)
3215 AC_SUBST(all_gtfiles_files_langs)
3216 AC_SUBST(all_gtfiles_files_files)
3217 AC_SUBST(all_lang_makefrags)
3218 AC_SUBST(all_lang_makefiles)
3219 AC_SUBST(all_languages)
3220 AC_SUBST(all_stagestuff)
3221 AC_SUBST(build_exeext)
3222 AC_SUBST(build_install_headers_dir)
3223 AC_SUBST(build_xm_file_list)
3224 AC_SUBST(build_xm_include_list)
3225 AC_SUBST(build_xm_defines)
3226 AC_SUBST(check_languages)
3227 AC_SUBST(cc_set_by_configure)
3228 AC_SUBST(quoted_cc_set_by_configure)
3229 AC_SUBST(cpp_install_dir)
3230 AC_SUBST(xmake_file)
3231 AC_SUBST(tmake_file)
3232 AC_SUBST(extra_gcc_objs)
3233 AC_SUBST(extra_headers_list)
3234 AC_SUBST(extra_objs)
3235 AC_SUBST(extra_parts)
3236 AC_SUBST(extra_passes)
3237 AC_SUBST(extra_programs)
3238 AC_SUBST(float_h_file)
3239 AC_SUBST(gcc_config_arguments)
3240 AC_SUBST(gcc_gxx_include_dir)
3241 AC_SUBST(libstdcxx_incdir)
3242 AC_SUBST(gcc_version)
3243 AC_SUBST(gcc_version_full)
3244 AC_SUBST(gcc_version_trigger)
3245 AC_SUBST(host_exeext)
3246 AC_SUBST(host_xm_file_list)
3247 AC_SUBST(host_xm_include_list)
3248 AC_SUBST(host_xm_defines)
3249 AC_SUBST(out_host_hook_obj)
3251 AC_SUBST(lang_opt_files)
3252 AC_SUBST(lang_specs_files)
3253 AC_SUBST(lang_tree_files)
3254 AC_SUBST(local_prefix)
3256 AC_SUBST(objc_boehm_gc)
3258 AC_SUBST(out_object_file)
3259 AC_SUBST(stage_prefix_set_by_configure)
3260 AC_SUBST(quoted_stage_prefix_set_by_configure)
3261 AC_SUBST(thread_file)
3262 AC_SUBST(tm_file_list)
3263 AC_SUBST(tm_include_list)
3264 AC_SUBST(tm_defines)
3265 AC_SUBST(tm_p_file_list)
3266 AC_SUBST(tm_p_include_list)
3267 AC_SUBST(xm_file_list)
3268 AC_SUBST(xm_include_list)
3269 AC_SUBST(xm_defines)
3270 AC_SUBST(c_target_objs)
3271 AC_SUBST(cxx_target_objs)
3272 AC_SUBST(target_cpu_default)
3274 AC_SUBST_FILE(language_hooks)
3276 TL_AC_GNU_MAKE_GCC_LIB_PATH
3279 if test x${build} = x${host} ; then
3280 if test x${host} = x${target} ; then
3281 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3283 echo "Links are now set up to build a cross-compiler" 1>&2
3284 echo " from ${host} to ${target}." 1>&2
3287 if test x${host} = x${target} ; then
3288 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3289 echo " for ${target}." 1>&2
3291 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3292 echo " from ${host} to ${target}." 1>&2
3296 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3297 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3299 # Configure the subdirectories
3300 # AC_CONFIG_SUBDIRS($subdirs)
3302 # Create the Makefile
3303 # and configure language subdirectories
3304 AC_CONFIG_FILES($all_outputs)
3306 AC_CONFIG_COMMANDS([default],
3308 case ${CONFIG_HEADERS} in
3309 *auto-host.h:config.in*)
3312 # Make sure all the subdirs exist.
3313 for d in $subdirs doc build
3315 test -d $d || mkdir $d
3317 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3318 # bootstrapping and the installation procedure can still use
3319 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3320 # FLAGS_TO_PASS has been modified to solve the problem there.
3321 # This is virtually a duplicate of what happens in configure.lang; we do
3322 # an extra check to make sure this only happens if ln -s can be used.
3325 for d in ${subdirs} ; do
3326 STARTDIR=`${PWDCMD-pwd}`
3328 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3331 $LN_S ../$t $t 2>/dev/null
3338 [subdirs='$subdirs'])