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 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1057 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1058 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1059 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1060 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1061 #include "ansidecl.h"
1070 gcc_AC_CHECK_DECLS(times, , ,[
1071 #include "ansidecl.h"
1073 #ifdef HAVE_SYS_TIMES_H
1074 #include <sys/times.h>
1078 # More time-related stuff.
1079 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1081 #include "ansidecl.h"
1083 #ifdef HAVE_SYS_TIMES_H
1084 #include <sys/times.h>
1086 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1087 if test $ac_cv_struct_tms = yes; then
1088 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1089 [Define if <sys/times.h> defines struct tms.])
1092 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1093 # revisit after autoconf 2.50.
1094 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1096 #include "ansidecl.h"
1098 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1099 if test $gcc_cv_type_clock_t = yes; then
1100 AC_DEFINE(HAVE_CLOCK_T, 1,
1101 [Define if <time.h> defines clock_t.])
1104 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1105 CFLAGS="$saved_CFLAGS"
1107 gcc_AC_INITFINI_ARRAY
1109 # mkdir takes a single argument on some systems.
1110 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1118 # With Setjmp/Longjmp based exception handling.
1119 AC_ARG_ENABLE(sjlj-exceptions,
1120 [ --enable-sjlj-exceptions
1121 arrange to use setjmp/longjmp exception handling],
1122 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1123 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1124 [Define 0/1 to force the choice for exception handling model.])])
1126 # For platforms with the unwind ABI which includes an unwind library,
1127 # libunwind, we can choose to use the system libunwind.
1128 AC_ARG_WITH(system-libunwind,
1129 [ --with-system-libunwind use installed libunwind])
1131 # --------------------------------------------------------
1132 # Build, host, and target specific configuration fragments
1133 # --------------------------------------------------------
1135 # Collect build-machine-specific information.
1136 . ${srcdir}/config.build
1138 # Collect host-machine-specific information.
1139 . ${srcdir}/config.host
1143 # Collect target-machine-specific information.
1144 . ${srcdir}/config.gcc
1146 extra_objs="${host_extra_objs} ${extra_objs}"
1147 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1149 # Default the target-machine variables that were not explicitly set.
1150 if test x"$tm_file" = x
1151 then tm_file=$cpu_type/$cpu_type.h; fi
1153 if test x"$extra_headers" = x
1154 then extra_headers=; fi
1156 if test x$md_file = x
1157 then md_file=$cpu_type/$cpu_type.md; fi
1159 if test x$out_file = x
1160 then out_file=$cpu_type/$cpu_type.c; fi
1162 if test x"$tmake_file" = x
1163 then tmake_file=$cpu_type/t-$cpu_type
1166 if test x"$dwarf2" = xyes
1167 then tm_file="$tm_file tm-dwarf2.h"
1170 # Say what files are being used for the output code and MD file.
1171 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1172 echo "Using \`$srcdir/config/$md_file' as machine description file."
1174 # If any of the xm_file variables contain nonexistent files, warn
1175 # about them and drop them.
1178 for x in $build_xm_file; do
1179 if test -f $srcdir/config/$x
1181 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1187 for x in $host_xm_file; do
1188 if test -f $srcdir/config/$x
1190 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1196 for x in $xm_file; do
1197 if test -f $srcdir/config/$x
1199 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1205 for f in $tm_file; do
1208 if test $count = ax; then
1209 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1211 echo "Using the following target machine macro files:"
1212 for f in $tm_file; do
1213 echo " $srcdir/config/$f"
1217 if test x$need_64bit_hwint = xyes; then
1218 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1219 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1222 if test x$use_long_long_for_widest_fast_int = xyes; then
1223 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1224 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1225 efficiently supported by the host hardware.])
1229 for f in $host_xm_file; do
1232 if test $count = a; then
1234 elif test $count = ax; then
1235 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1237 echo "Using the following host machine macro files:"
1238 for f in $host_xm_file; do
1239 echo " $srcdir/config/$f"
1242 echo "Using ${out_host_hook_obj} for host machine hooks."
1244 if test "$host_xm_file" != "$build_xm_file"; then
1246 for f in $build_xm_file; do
1249 if test $count = a; then
1251 elif test $count = ax; then
1252 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1254 echo "Using the following build machine macro files:"
1255 for f in $build_xm_file; do
1256 echo " $srcdir/config/$f"
1265 # Check if a valid thread package
1266 case ${enable_threads} in
1269 target_thread_file='single'
1273 target_thread_file='single'
1275 aix | dce | gnat | irix | posix | posix95 | rtems | \
1276 single | solaris | vxworks | win32 )
1277 target_thread_file=${enable_threads}
1280 echo "${enable_threads} is an unknown thread package" 1>&2
1285 if test x${thread_file} = x; then
1286 # No thread file set by target-specific clauses in config.gcc,
1287 # so use file chosen by default logic above
1288 thread_file=${target_thread_file}
1291 # Make gthr-default.h if we have a thread file.
1293 if test $thread_file != single; then
1294 rm -f gthr-default.h
1295 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1296 gthread_flags=-DHAVE_GTHR_DEFAULT
1298 AC_SUBST(gthread_flags)
1305 if test x$enable___cxa_atexit = xyes || \
1306 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1307 if test x$host = x$target; then
1308 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1309 [echo "__cxa_atexit can't be enabled on this target"])
1311 # We can't check for __cxa_atexit when building a cross, so assume
1315 if test x$use_cxa_atexit = xyes; then
1316 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1317 [Define if you want to use __cxa_atexit, rather than atexit, to
1318 register C++ destructors for local statics and global objects.
1319 This is essential for fully standards-compliant handling of
1320 destructors, but requires __cxa_atexit in libc.])
1324 # Look for a file containing extra machine modes.
1325 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1326 extra_modes_file='$(srcdir)'/config/${extra_modes}
1327 AC_SUBST(extra_modes_file)
1328 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1329 [Define to the name of a file containing a list of extra machine modes
1330 for this architecture.])
1333 # auto-host.h is the file containing items generated by autoconf and is
1334 # the first file included by config.h.
1335 # If host=build, it is correct to have bconfig include auto-host.h
1336 # as well. If host!=build, we are in error and need to do more
1337 # work to find out the build config parameters.
1338 if test x$host = x$build
1340 build_auto=auto-host.h
1342 # We create a subdir, then run autoconf in the subdir.
1343 # To prevent recursion we set host and build for the new
1344 # invocation of configure to the build for this invocation
1351 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1352 *) realsrcdir=../${srcdir};;
1354 saved_CFLAGS="${CFLAGS}"
1355 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1356 ${realsrcdir}/configure \
1357 --enable-languages=${enable_languages-all} \
1358 --target=$target_alias --host=$build_alias --build=$build_alias
1359 CFLAGS="${saved_CFLAGS}"
1361 # We just finished tests for the build machine, so rename
1362 # the file auto-build.h in the gcc directory.
1363 mv auto-host.h ../auto-build.h
1366 build_auto=auto-build.h
1368 AC_SUBST(build_subdir)
1370 tm_file="${tm_file} defaults.h"
1371 tm_p_file="${tm_p_file} tm-preds.h"
1372 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1373 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1374 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1375 # put this back in temporarily.
1376 xm_file="ansidecl.h ${xm_file}"
1382 TL_AC_GCC_VERSION([$srcdir/..])
1385 # Compile in configure arguments.
1386 if test -f configargs.h ; then
1387 # Being re-configured.
1388 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1389 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1391 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1394 # Double all backslashes and backslash all quotes to turn
1395 # gcc_config_arguments into a C string.
1396 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1397 $gcc_config_arguments
1399 gcc_config_arguments_str=`cat conftest.out`
1402 cat > configargs.h <<EOF
1403 /* Generated automatically. */
1404 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1405 static const char thread_model[] = "$thread_file";
1407 static const struct {
1408 const char *name, *value;
1409 } configure_default_options[] = $configure_default_options;
1413 # Internationalization
1415 VERSION="$gcc_version"
1416 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1417 [The name of this program for internationalization purposes.])
1421 ZW_GNU_GETTEXT_SISTER_DIR
1423 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1424 # -liconv on the link line twice.
1425 case "$LIBINTL" in *$LIBICONV*)
1429 # Windows32 Registry support for specifying GCC installation paths.
1430 AC_ARG_ENABLE(win32-registry,
1431 [ --disable-win32-registry
1432 disable lookup of installation paths in the
1433 Registry on Windows hosts
1434 --enable-win32-registry enable registry lookup (default)
1435 --enable-win32-registry=KEY
1436 use KEY instead of GCC version as the last portion
1437 of the registry key],,)
1439 win32 | pe | cygwin* | mingw32* | uwin*)
1440 AC_MSG_CHECKING(whether windows registry support is requested)
1441 if test "x$enable_win32_registry" != xno; then
1442 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1443 [Define to 1 if installation paths should be looked up in Windows32
1444 Registry. Ignored on non windows32 hosts.])
1446 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1451 # Check if user specified a different registry key.
1452 case "x${enable_win32_registry}" in
1455 gcc_cv_win32_registry_key="$VERSION"
1458 # no registry lookup.
1459 gcc_cv_win32_registry_key=''
1462 # user-specified key.
1463 gcc_cv_win32_registry_key="$enable_win32_registry"
1467 if test "x$enable_win32_registry" != xno; then
1468 AC_MSG_CHECKING(registry key on windows hosts)
1469 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1470 [Define to be the last portion of registry key on windows hosts.])
1471 AC_MSG_RESULT($gcc_cv_win32_registry_key)
1476 # Get an absolute path to the GCC top-level source directory
1477 holddir=`${PWDCMD-pwd}`
1479 topdir=`${PWDCMD-pwd}`
1482 # Conditionalize the makefile for this host machine.
1484 for f in ${host_xmake_file}
1486 if test -f ${srcdir}/config/$f
1488 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1492 # Conditionalize the makefile for this target machine.
1494 for f in ${tmake_file}
1496 if test -f ${srcdir}/config/$f
1498 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1501 tmake_file="${tmake_file_}"
1503 # If the host doesn't support symlinks, modify CC in
1504 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1505 # Otherwise, we can use "CC=$(CC)".
1509 cc_set_by_configure="\$(CC)"
1510 quoted_cc_set_by_configure="\$(CC)"
1511 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1512 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1515 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1516 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1517 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1518 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1522 out_object_file=`basename $out_file .c`.o
1526 for f in $tm_file; do
1529 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1530 tm_include_list="${tm_include_list} $f"
1533 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1534 tm_include_list="${tm_include_list} config/$f"
1541 for f in $tm_p_file; do
1544 tm_p_file_list="${tm_p_file_list} $f"
1545 tm_p_include_list="${tm_p_include_list} $f"
1548 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1549 tm_p_include_list="${tm_p_include_list} config/$f"
1555 for f in $xm_file; do
1558 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1559 xm_include_list="${xm_include_list} $f"
1562 xm_file_list="${xm_file_list} $f"
1563 xm_include_list="${xm_include_list} $f"
1566 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1567 xm_include_list="${xm_include_list} config/$f"
1573 host_xm_include_list=
1574 for f in $host_xm_file; do
1577 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1578 host_xm_include_list="${host_xm_include_list} $f"
1581 host_xm_file_list="${host_xm_file_list} $f"
1582 host_xm_include_list="${host_xm_include_list} $f"
1585 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1586 host_xm_include_list="${host_xm_include_list} config/$f"
1592 for f in $build_xm_file; do
1595 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1596 build_xm_include_list="${build_xm_include_list} $f"
1598 auto-build.h | auto-host.h )
1599 build_xm_file_list="${build_xm_file_list} $f"
1600 build_xm_include_list="${build_xm_include_list} $f"
1603 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1604 build_xm_include_list="${build_xm_include_list} config/$f"
1609 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1610 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1611 CROSS= AC_SUBST(CROSS)
1612 ALL=all.internal AC_SUBST(ALL)
1613 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1614 if test x$host != x$target
1616 CROSS="-DCROSS_COMPILE"
1618 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1619 case "$host","$target" in
1620 # Darwin crosses can use the host system's libraries and headers,
1621 # because of the fat library support. Of course, it must be the
1622 # same version of Darwin on both sides. Allow the user to
1623 # just say --target=foo-darwin without a version number to mean
1624 # "the version on this system".
1625 *-*-darwin*,*-*-darwin*)
1626 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1627 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1628 if test $hostos = $targetos -o $targetos = darwin ; then
1630 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1635 i?86-*-*,x86_64-*-* \
1636 | powerpc*-*-*,powerpc64*-*-*)
1637 CROSS="$CROSS -DNATIVE_CROSS" ;;
1639 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1640 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1641 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1644 # If this is a cross-compiler that does not
1645 # have its own set of headers then define
1648 # If this is using newlib, without having the headers available now,
1649 # then define inhibit_libc in LIBGCC2_CFLAGS.
1650 # This prevents libgcc2 from containing any code which requires libc
1653 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1654 test x$with_newlib = xyes ; } &&
1655 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1656 inhibit_libc=-Dinhibit_libc
1658 AC_SUBST(inhibit_libc)
1660 # When building gcc with a cross-compiler, we need to adjust things so
1661 # that the generator programs are still built with the native compiler.
1662 # Also, we cannot run fixincludes or fix-header.
1664 # These are the normal (build=host) settings:
1665 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1666 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1667 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1669 # Possibly disable fixproto, on a per-target basis.
1670 case ${use_fixproto} in
1675 STMP_FIXPROTO=stmp-fixproto
1678 AC_SUBST(STMP_FIXPROTO)
1680 # And these apply if build != host, or we are generating coverage data
1681 if test x$build != x$host || test "x$coverage_flags" != x
1683 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1685 if test "x$TARGET_SYSTEM_ROOT" = x; then
1686 if [ "x$STMP_FIXPROTO" != x ] ; then
1687 STMP_FIXPROTO=stmp-install-fixproto
1692 # Expand extra_headers to include complete path.
1693 # This substitutes for lots of t-* files.
1695 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1696 for file in ${extra_headers} ; do
1697 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1700 # Define collect2 in Makefile.
1701 case $host_can_use_collect2 in
1703 *) collect2='collect2$(exeext)' ;;
1705 AC_SUBST([collect2])
1707 # Add a definition of USE_COLLECT2 if system wants one.
1708 case $use_collect2 in
1709 no) use_collect2= ;;
1712 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1713 xm_defines="${xm_defines} USE_COLLECT2"
1714 case $host_can_use_collect2 in
1716 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1722 # ---------------------------
1723 # Assembler & linker features
1724 # ---------------------------
1726 # Identify the assembler which will work hand-in-glove with the newly
1727 # built GCC, so that we can examine its features. This is the assembler
1728 # which will be driven by the driver program.
1730 # If build != host, and we aren't building gas in-tree, we identify a
1731 # build->target assembler and hope that it will have the same features
1732 # as the host->target assembler we'll be using.
1733 AC_MSG_CHECKING(what assembler to use)
1736 gcc_cv_gas_major_version=
1737 gcc_cv_gas_minor_version=
1738 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1739 if test -x "$DEFAULT_ASSEMBLER"; then
1740 gcc_cv_as="$DEFAULT_ASSEMBLER"
1741 elif test -x as$build_exeext; then
1742 # Build using assembler in the current directory.
1743 gcc_cv_as=./as$build_exeext
1744 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1745 && test -f ../gas/Makefile \
1746 && test x$build = x$host; then
1747 # Single tree build which includes gas. We want to prefer it
1748 # over whatever linker top-level may have detected, since
1749 # we'll use what we're building after installation anyway.
1751 _gcc_COMPUTE_GAS_VERSION
1752 rm -f as$build_exeext
1753 $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1754 in_tree_gas_is_elf=no
1755 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1756 || (grep 'obj_format = multi' ../gas/Makefile \
1757 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1759 in_tree_gas_is_elf=yes
1761 m4_pattern_allow([AS_FOR_TARGET])dnl
1762 elif test -x "$AS_FOR_TARGET"; then
1763 gcc_cv_as="$AS_FOR_TARGET"
1764 elif test -x "$AS" && test x$host = x$target; then
1768 if test "x$gcc_cv_as" = x; then
1769 # Search the same directories that the installed compiler will
1770 # search. Else we may find the wrong assembler and lose. If we
1771 # do not find a suitable assembler binary, then try the user's
1774 # Also note we have to check MD_EXEC_PREFIX before checking the
1775 # user's path. Unfortunately, there is no good way to get at the
1776 # value of MD_EXEC_PREFIX here. So we do a brute force search
1777 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1778 # to be fixed as part of the make/configure rewrite too.
1780 if test "x$exec_prefix" = xNONE; then
1781 if test "x$prefix" = xNONE; then
1782 test_prefix=/usr/local
1787 test_prefix=$exec_prefix
1790 # If the loop below does not find an assembler, then use whatever
1791 # one we can find in the users's path.
1793 if test "x$program_prefix" != xNONE; then
1794 gcc_cv_as=${program_prefix}as$build_exeext
1796 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1799 if test x$host = x$build; then
1800 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1801 $test_prefix/libexec/gcc/$target_noncanonical \
1802 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1803 /usr/lib/gcc/$target_noncanonical \
1804 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1805 $test_prefix/$target_noncanonical/bin"
1810 if test x$host = x$target; then
1811 test_dirs="$test_dirs \
1816 /bsd43/usr/lib/cmplrs/cc \
1817 /usr/cross64/usr/bin \
1818 /usr/lib/cmplrs/cc \
1819 /sysv/usr/lib/cmplrs/cc \
1820 /svr4/usr/lib/cmplrs/cc \
1824 for dir in $test_dirs; do
1825 if test -x $dir/as$build_exeext; then
1826 gcc_cv_as=$dir/as$build_exeext
1831 case $in_tree_gas in
1833 AC_MSG_RESULT("newly built gas")
1836 AC_MSG_RESULT($gcc_cv_as)
1840 # Identify the linker which will work hand-in-glove with the newly
1841 # built GCC, so that we can examine its features. This is the linker
1842 # which will be driven by the driver program.
1844 # If build != host, and we aren't building gas in-tree, we identify a
1845 # build->target linker and hope that it will have the same features
1846 # as the host->target linker we'll be using.
1847 AC_MSG_CHECKING(what linker to use)
1850 gcc_cv_gld_major_version=
1851 gcc_cv_gld_minor_version=
1852 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1853 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1854 if test -x "$DEFAULT_LINKER"; then
1855 gcc_cv_ld="$DEFAULT_LINKER"
1856 elif test -x collect-ld$build_exeext; then
1857 # Build using linker in the current directory.
1858 gcc_cv_ld=./collect-ld$build_exeext
1859 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1860 && test -f ../ld/Makefile \
1861 && test x$build = x$host; then
1862 # Single tree build which includes ld. We want to prefer it
1863 # over whatever linker top-level may have detected, since
1864 # we'll use what we're building after installation anyway.
1866 in_tree_ld_is_elf=no
1867 if (grep 'EMUL = .*elf' ../ld/Makefile \
1868 || grep 'EMUL = .*linux' ../ld/Makefile \
1869 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1870 in_tree_ld_is_elf=yes
1872 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
1875 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1877 if test x$gcc_cv_gld_version != x; then
1882 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1883 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1885 rm -f collect-ld$build_exeext
1886 $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1887 elif test -x "$LD_FOR_TARGET"; then
1888 gcc_cv_ld="$LD_FOR_TARGET"
1889 elif test -x "$LD" && test x$host = x$target; then
1893 if test "x$gcc_cv_ld" = x; then
1894 # Search the same directories that the installed compiler will
1895 # search. Else we may find the wrong linker and lose. If we
1896 # do not find a suitable linker binary, then try the user's
1899 # Also note we have to check MD_EXEC_PREFIX before checking the
1900 # user's path. Unfortunately, there is no good way to get at the
1901 # value of MD_EXEC_PREFIX here. So we do a brute force search
1902 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1903 # to be fixed as part of the make/configure rewrite too.
1905 if test "x$exec_prefix" = xNONE; then
1906 if test "x$prefix" = xNONE; then
1907 test_prefix=/usr/local
1912 test_prefix=$exec_prefix
1915 # If the loop below does not find an linker, then use whatever
1916 # one we can find in the users's path.
1918 if test "x$program_prefix" != xNONE; then
1919 gcc_cv_ld=${program_prefix}ld$build_exeext
1921 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1924 if test x$host = x$build; then
1925 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1926 $test_prefix/libexec/gcc/$target_noncanonical \
1927 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1928 /usr/lib/gcc/$target_noncanonical \
1929 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1930 $test_prefix/$target_noncanonical/bin"
1935 if test x$host = x$target; then
1936 test_dirs="$test_dirs \
1941 /bsd43/usr/lib/cmplrs/cc \
1942 /usr/cross64/usr/bin \
1943 /usr/lib/cmplrs/cc \
1944 /sysv/usr/lib/cmplrs/cc \
1945 /svr4/usr/lib/cmplrs/cc \
1949 for dir in $test_dirs; do
1950 if test -x $dir/ld$build_exeext; then
1951 gcc_cv_ld=$dir/ld$build_exeext
1958 AC_MSG_RESULT("newly built ld")
1961 AC_MSG_RESULT($gcc_cv_ld)
1965 # Figure out what nm we will be using.
1966 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1967 AC_MSG_CHECKING(what nm to use)
1969 if test -x nm$build_exeext; then
1970 gcc_cv_nm=./nm$build_exeext
1971 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1972 && test -f ../binutils/Makefile; then
1973 # Single tree build which includes binutils.
1975 gcc_cv_nm=./nm$build_exeext
1976 rm -f nm$build_exeext
1977 $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1978 elif test "x$program_prefix" != xNONE; then
1979 gcc_cv_nm=${program_prefix}nm$build_exeext
1981 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1984 yes) AC_MSG_RESULT("newly built nm") ;;
1985 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1988 # Figure out what objdump we will be using.
1989 AC_MSG_CHECKING(what objdump to use)
1991 if test -x objdump$build_exeext; then
1992 gcc_cv_objdump=./objdump$build_exeext
1993 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1994 && test -f ../binutils/Makefile; then
1995 # Single tree build which includes binutils.
1997 gcc_cv_objdump=./objdump$build_exeext
1998 rm -f objdump$build_exeext
1999 $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2000 elif test "x$program_prefix" != xNONE; then
2001 gcc_cv_objdump=${program_prefix}objdump$build_exeext
2003 gcc_cv_objdump=`echo objdump | \
2004 sed "${program_transform_name}"`$build_exeext
2006 case $in_tree_objdump in
2007 yes) AC_MSG_RESULT("newly built objdump") ;;
2008 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2011 # Figure out what assembler alignment features are present.
2012 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2016 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2017 [Define if your assembler supports .balign and .p2align.])])
2019 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2022 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2023 [Define if your assembler supports specifying the maximum number
2024 of bytes to skip when using the GAS .p2align command.])])
2026 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2028 [conftest_label1: .word 0
2030 conftest_label2: .word 0
2032 [if test x$gcc_cv_nm != x; then
2033 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2034 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2035 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2037 else gcc_cv_as_subsection_m1=yes
2039 rm -f conftest.nm1 conftest.nm2
2041 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2042 [Define if your assembler supports .subsection and .subsection -1 starts
2043 emitting at the beginning of your section.])])
2045 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2048 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2050 # .hidden needs to be supported in both the assembler and the linker,
2051 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2052 # This is irritatingly difficult to feature test for; we have to check the
2053 # date string after the version number. If we've got an in-tree
2054 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2056 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2057 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2062 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2063 [if test $in_tree_ld = yes ; then
2065 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2066 && test $in_tree_ld_is_elf = yes; then
2067 gcc_cv_ld_hidden=yes
2070 gcc_cv_ld_hidden=yes
2071 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2072 if echo "$ld_ver" | grep GNU > /dev/null; then
2074 ld_vers=`echo $ld_ver | sed -n \
2075 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2076 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2077 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2078 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2079 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2080 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2081 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2082 if test 0"$ld_date" -lt 20020404; then
2083 if test -n "$ld_date"; then
2084 # If there was date string, but was earlier than 2002-04-04, fail
2086 elif test -z "$ld_vers"; then
2087 # If there was no date string nor ld version number, something is wrong
2090 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2091 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2092 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2093 test -z "$ld_vers_patch" && ld_vers_patch=0
2094 if test "$ld_vers_major" -lt 2; then
2096 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2097 gcc_cv_ld_hidden="no"
2098 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2106 hppa64*-*-hpux* | ia64*-*-hpux*)
2107 gcc_cv_ld_hidden=yes
2115 libgcc_visibility=no
2116 AC_SUBST(libgcc_visibility)
2117 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2118 libgcc_visibility=yes
2119 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2120 [Define if your assembler and linker support .hidden.])
2123 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2124 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2132 [# GAS versions before 2.11 do not support uleb128,
2133 # despite appearing to.
2134 # ??? There exists an elf-specific test that will crash
2135 # the assembler. Perhaps it's better to figure out whether
2136 # arbitrary sections are supported and try the test.
2137 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2138 if echo "$as_ver" | grep GNU > /dev/null; then
2140 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2141 as_major=`echo $as_ver | sed 's/\..*//'`
2142 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2144 if test $as_major -eq 2 && test $as_minor -lt 11
2146 else gcc_cv_as_leb128=yes
2149 [AC_DEFINE(HAVE_AS_LEB128, 1,
2150 [Define if your assembler supports .sleb128 and .uleb128.])])
2152 # GAS versions up to and including 2.11.0 may mis-optimize
2154 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2162 .section .eh_frame,"aw",@progbits
2164 .4byte .LECIE1-.LSCIE1
2178 .4byte .LEFDE1-.LASFDE1
2180 .4byte .LASFDE1-__FRAME_BEGIN__
2188 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2189 cat > conftest.lit <<EOF
2190 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2191 0010 01000000 12000000 18000000 00000000 ................
2192 0020 08000000 04080000 0044 .........D @&t@
2194 cat > conftest.big <<EOF
2195 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2196 0010 00000001 00000012 00000018 00000000 ................
2197 0020 00000008 04000000 0844 .........D @&t@
2199 # If the assembler didn't choke, and we can objdump,
2200 # and we got the correct data, then succeed.
2201 if test x$gcc_cv_objdump != x \
2202 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2203 | tail -3 > conftest.got \
2204 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2205 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2207 gcc_cv_as_eh_frame=yes
2208 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2209 gcc_cv_as_eh_frame=buggy
2211 # Uh oh, what do we do now?
2212 gcc_cv_as_eh_frame=no
2215 if test $gcc_cv_as_eh_frame = buggy; then
2216 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2217 [Define if your assembler mis-optimizes .eh_frame data.])
2220 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2221 [elf,2,12,0], [--fatal-warnings],
2222 [.section .rodata.str, "aMS", @progbits, 1])
2223 if test $gcc_cv_as_shf_merge = no; then
2224 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2225 [elf,2,12,0], [--fatal-warnings],
2226 [.section .rodata.str, "aMS", %progbits, 1])
2228 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2229 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2230 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2232 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2233 [elf,2,15,91], [--fatal-warnings],
2234 [.section .text,"axG",@progbits,.foo,comdat])
2235 if test $gcc_cv_as_comdat_group = yes; then
2236 gcc_cv_as_comdat_group_percent=no
2238 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2239 [elf,2,15,91], [--fatal-warnings],
2240 [.section .text,"axG",%progbits,.foo,comdat])
2242 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2243 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2244 [Define 0/1 if your assembler supports COMDAT group.])
2246 # Thread-local storage - the check is heavily parametrized.
2255 .section ".tdata","awT",@progbits
2258 ldq $27,__tls_get_addr($29) !literal!1
2259 lda $16,foo($29) !tlsgd!1
2260 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2261 ldq $27,__tls_get_addr($29) !literal!2
2262 lda $16,foo($29) !tlsldm!2
2263 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2264 ldq $1,foo($29) !gotdtprel
2265 ldah $2,foo($29) !dtprelhi
2266 lda $3,foo($2) !dtprello
2267 lda $4,foo($29) !dtprel
2268 ldq $1,foo($29) !gottprel
2269 ldah $2,foo($29) !tprelhi
2270 lda $3,foo($2) !tprello
2271 lda $4,foo($29) !tprel'
2274 tls_as_opt=--fatal-warnings
2278 .section ".tdata","awT",@progbits
2282 leal foo@TLSGD(,%ebx,1), %eax
2283 leal foo@TLSLDM(%ebx), %eax
2284 leal foo@DTPOFF(%eax), %edx
2285 movl foo@GOTTPOFF(%ebx), %eax
2286 subl foo@GOTTPOFF(%ebx), %eax
2287 addl foo@GOTNTPOFF(%ebx), %eax
2288 movl foo@INDNTPOFF, %eax
2289 movl $foo@TPOFF, %eax
2290 subl $foo@TPOFF, %eax
2291 leal foo@NTPOFF(%ecx), %eax'
2294 tls_as_opt=--fatal-warnings
2298 .section ".tdata","awT",@progbits
2302 leaq foo@TLSGD(%rip), %rdi
2303 leaq foo@TLSLD(%rip), %rdi
2304 leaq foo@DTPOFF(%rax), %rdx
2305 movq foo@GOTTPOFF(%rip), %rax
2306 movq $foo@TPOFF, %rax'
2309 tls_as_opt=--fatal-warnings
2313 .section ".tdata","awT",@progbits
2316 addl r16 = @ltoff(@dtpmod(foo#)), gp
2317 addl r17 = @ltoff(@dtprel(foo#)), gp
2318 addl r18 = @ltoff(@tprel(foo#)), gp
2319 addl r19 = @dtprel(foo#), gp
2320 adds r21 = @dtprel(foo#), r13
2321 movl r23 = @dtprel(foo#)
2322 addl r20 = @tprel(foo#), gp
2323 adds r22 = @tprel(foo#), r13
2324 movl r24 = @tprel(foo#)'
2327 tls_as_opt=--fatal-warnings
2331 .section ".tdata","awT",@progbits
2339 addi 3,31,ld0@got@tlsgd
2341 addi 3,31,x1@got@tlsld
2344 addis 9,3,x2@dtprel@ha
2345 addi 9,9,x2@dtprel@l
2346 lwz 9,x3@got@tprel(31)
2349 addis 9,2,x2@tprel@ha
2350 addi 9,9,x2@tprel@l'
2353 tls_as_opt="-a32 --fatal-warnings"
2357 .section ".tdata","awT",@progbits
2365 addi 3,2,ld0@got@tlsgd
2371 addi 3,2,x1@got@tlsld
2377 addis 9,3,x2@dtprel@ha
2378 addi 9,9,x2@dtprel@l
2381 ld 9,x3@got@dtprel(2)
2387 tls_as_opt="-a64 --fatal-warnings"
2391 .section ".tdata","awT",@progbits
2400 l %r1,foo@GOTNTPOFF(%r12)
2401 l %r1,0(%r1):tls_load:foo
2402 bas %r14,0(%r1,%r13):tls_gdcall:foo
2403 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2406 tls_as_opt="-m31 --fatal-warnings"
2410 .section ".tdata","awT",@progbits
2418 lg %r1,foo@GOTNTPOFF(%r12)
2419 larl %r1,foo@INDNTPOFF
2420 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2421 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2424 tls_as_opt="-m64 -Aesame --fatal-warnings"
2426 sh-*-* | sh[34]-*-*)
2428 .section ".tdata","awT",@progbits
2438 tls_as_opt=--fatal-warnings
2442 sparc*-sun-solaris2.*)
2449 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2451 .section ".tdata",#alloc,#write,#tls
2454 sethi %tgd_hi22(foo), %o0
2455 add %o0, %tgd_lo10(foo), %o1
2456 add %l7, %o1, %o0, %tgd_add(foo)
2457 call __tls_get_addr, %tgd_call(foo)
2458 sethi %tldm_hi22(foo), %l1
2459 add %l1, %tldm_lo10(foo), %l2
2460 add %l7, %l2, %o0, %tldm_add(foo)
2461 call __tls_get_addr, %tldm_call(foo)
2462 sethi %tldo_hix22(foo), %l3
2463 xor %l3, %tldo_lox10(foo), %l4
2464 add %o0, %l4, %l5, %tldo_add(foo)
2465 sethi %tie_hi22(foo), %o3
2466 add %o3, %tie_lo10(foo), %o3
2467 ld [%l7 + %o3], %o2, %tie_ld(foo)
2468 add %g7, %o2, %o4, %tie_add(foo)
2469 sethi %tle_hix22(foo), %l1
2470 xor %l1, %tle_lox10(foo), %o5
2471 ld [%g7 + %o5], %o1'
2476 .section ".tdata","awT",@progbits
2479 sethi %tgd_hi22(foo), %o0
2480 add %o0, %tgd_lo10(foo), %o1
2481 add %l7, %o1, %o0, %tgd_add(foo)
2482 call __tls_get_addr, %tgd_call(foo)
2483 sethi %tldm_hi22(foo), %l1
2484 add %l1, %tldm_lo10(foo), %l2
2485 add %l7, %l2, %o0, %tldm_add(foo)
2486 call __tls_get_addr, %tldm_call(foo)
2487 sethi %tldo_hix22(foo), %l3
2488 xor %l3, %tldo_lox10(foo), %l4
2489 add %o0, %l4, %l5, %tldo_add(foo)
2490 sethi %tie_hi22(foo), %o3
2491 add %o3, %tie_lo10(foo), %o3
2492 ld [%l7 + %o3], %o2, %tie_ld(foo)
2493 add %g7, %o2, %o4, %tie_add(foo)
2494 sethi %tle_hix22(foo), %l1
2495 xor %l1, %tle_lox10(foo), %o5
2496 ld [%g7 + %o5], %o1'
2499 tls_as_opt="-32 --fatal-warnings"
2504 if test -z "$tls_first_major"; then
2505 : # If we don't have a check, assume no support.
2507 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2508 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2509 [AC_DEFINE(HAVE_AS_TLS, 1,
2510 [Define if your assembler supports thread-local storage.])])
2513 # Target-specific assembler checks.
2515 if test x"$demangler_in_ld" = xyes; then
2516 AC_MSG_CHECKING(linker --demangle support)
2517 gcc_cv_ld_demangle=no
2518 if test $in_tree_ld = yes; then
2519 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2520 gcc_cv_ld_demangle=yes
2522 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2523 # Check if the GNU linker supports --demangle option
2524 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2525 gcc_cv_ld_demangle=yes
2528 if test x"$gcc_cv_ld_demangle" = xyes; then
2529 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2530 [Define if your linker supports --demangle option.])
2532 AC_MSG_RESULT($gcc_cv_ld_demangle)
2536 # All TARGET_ABI_OSF targets.
2537 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2538 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2539 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2542 extbl $3, $2, $3 !lituse_bytoff!1
2543 ldq $2, a($29) !literal!1
2544 ldq $4, b($29) !literal!2
2545 ldq_u $3, 0($2) !lituse_base!1
2546 ldq $27, f($29) !literal!5
2547 jsr $26, ($27), f !lituse_jsr!5
2548 ldah $29, 0($26) !gpdisp!3
2549 lda $0, c($29) !gprel
2550 ldah $1, d($29) !gprelhigh
2551 lda $1, d($1) !gprellow
2552 lda $29, 0($29) !gpdisp!3],,
2553 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2554 [Define if your assembler supports explicit relocations.])])
2558 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2559 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2560 [-no-mul-bug-abort], [.text],,
2561 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2562 [Define if your assembler supports the -no-mul-bug-abort option.])])
2566 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2567 [.register %g2, #scratch],,
2568 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2569 [Define if your assembler supports .register.])])
2571 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2573 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2574 [Define if your assembler supports -relax option.])])
2576 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2577 gcc_cv_as_sparc_ua_pcrel,,
2585 .uaword %r_disp32(foo)],
2586 [if test x$gcc_cv_ld != x \
2587 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2588 gcc_cv_as_sparc_ua_pcrel=yes
2591 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2592 [Define if your assembler and linker support unaligned PC relative relocs.])
2594 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2595 gcc_cv_as_sparc_ua_pcrel_hidden,,
2600 .uaword %r_disp32(foo)
2601 .byte 0x32, 0x33, 0x34
2606 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2607 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2608 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2609 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2610 if $gcc_cv_objdump -R conftest 2> /dev/null \
2611 | grep 'DISP32' > /dev/null 2>&1; then
2614 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2618 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2619 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2620 ]) # unaligned pcrel relocs
2622 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2623 gcc_cv_as_sparc_offsetable_lo10,,
2626 or %g1, %lo(ab) + 12, %g1
2627 or %g1, %lo(ab + 12), %g1],
2628 [if test x$gcc_cv_objdump != x \
2629 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2630 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2631 gcc_cv_as_offsetable_lo10=yes
2633 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2634 [Define if your assembler supports offsetable %lo().])])
2638 i[34567]86-*-* | x86_64-*-*)
2641 cygwin* | pe | mingw32*)
2642 # Used for DWARF 2 in PE
2643 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2644 gcc_cv_as_ix86_pe_secrel32,
2650 [if test x$gcc_cv_ld != x \
2651 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2652 gcc_cv_as_ix86_pe_secrel32=yes
2655 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2656 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2660 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2661 gcc_cv_as_ix86_filds_fists,
2662 [2,9,0],, [filds mem; fists mem],,
2663 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2664 [Define if your assembler uses the new HImode fild and fist notation.])])
2666 gcc_GAS_CHECK_FEATURE([cmov syntax],
2667 gcc_cv_as_ix86_cmov_sun_syntax,,,
2668 [cmovl.l %edx, %eax],,
2669 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2670 [Define if your assembler supports the Sun syntax for cmov.])])
2672 # This one is used unconditionally by i386.[ch]; it is to be defined
2673 # to 1 if the feature is present, 0 otherwise.
2674 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2675 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2681 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2682 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2683 [Define true if the assembler supports '.long foo@GOTOFF'.])
2687 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2688 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2690 addl r15 = @ltoffx(x#), gp
2692 ld8.mov r16 = [[r15]], x#],,
2693 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2694 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2700 *-*-aix*) conftest_s=' .csect .text[[PR]]
2703 gcc_GAS_CHECK_FEATURE([.machine directive support],
2704 gcc_cv_as_machine_directive,,,
2705 [ .machine ppc7400])
2706 if test x$gcc_cv_as_machine_directive != xyes; then
2707 echo "*** This target requires an assembler supporting \".machine\"" >&2
2708 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2709 test x$build = x$target && exit 1
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/$subdir-tree.def"
3031 # These (without "all_") are set in each config-lang.in.
3032 # `language' must be a single word so is spelled singularly.
3037 all_outputs='Makefile gccbug mklibgcc libada-mk'
3038 # List of language makefile fragments.
3040 # List of language subdirectory makefiles. Deprecated.
3042 # Files for gengtype
3043 all_gtfiles="$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=`${PWDCMD-pwd}`
3209 # Substitute configuration variables
3212 AC_SUBST(all_boot_languages)
3213 AC_SUBST(all_compilers)
3214 AC_SUBST(all_gtfiles)
3215 AC_SUBST(all_gtfiles_files_langs)
3216 AC_SUBST(all_gtfiles_files_files)
3217 AC_SUBST(all_lang_makefrags)
3218 AC_SUBST(all_lang_makefiles)
3219 AC_SUBST(all_languages)
3220 AC_SUBST(all_stagestuff)
3221 AC_SUBST(build_exeext)
3222 AC_SUBST(build_install_headers_dir)
3223 AC_SUBST(build_xm_file_list)
3224 AC_SUBST(build_xm_include_list)
3225 AC_SUBST(build_xm_defines)
3226 AC_SUBST(check_languages)
3227 AC_SUBST(cc_set_by_configure)
3228 AC_SUBST(quoted_cc_set_by_configure)
3229 AC_SUBST(cpp_install_dir)
3230 AC_SUBST(xmake_file)
3231 AC_SUBST(tmake_file)
3232 AC_SUBST(extra_gcc_objs)
3233 AC_SUBST(extra_headers_list)
3234 AC_SUBST(extra_objs)
3235 AC_SUBST(extra_parts)
3236 AC_SUBST(extra_passes)
3237 AC_SUBST(extra_programs)
3238 AC_SUBST(float_h_file)
3239 AC_SUBST(gcc_config_arguments)
3240 AC_SUBST(gcc_gxx_include_dir)
3241 AC_SUBST(libstdcxx_incdir)
3242 AC_SUBST(host_exeext)
3243 AC_SUBST(host_xm_file_list)
3244 AC_SUBST(host_xm_include_list)
3245 AC_SUBST(host_xm_defines)
3246 AC_SUBST(out_host_hook_obj)
3248 AC_SUBST(lang_opt_files)
3249 AC_SUBST(lang_specs_files)
3250 AC_SUBST(lang_tree_files)
3251 AC_SUBST(local_prefix)
3253 AC_SUBST(objc_boehm_gc)
3255 AC_SUBST(out_object_file)
3256 AC_SUBST(stage_prefix_set_by_configure)
3257 AC_SUBST(quoted_stage_prefix_set_by_configure)
3258 AC_SUBST(thread_file)
3259 AC_SUBST(tm_file_list)
3260 AC_SUBST(tm_include_list)
3261 AC_SUBST(tm_defines)
3262 AC_SUBST(tm_p_file_list)
3263 AC_SUBST(tm_p_include_list)
3264 AC_SUBST(xm_file_list)
3265 AC_SUBST(xm_include_list)
3266 AC_SUBST(xm_defines)
3267 AC_SUBST(c_target_objs)
3268 AC_SUBST(cxx_target_objs)
3269 AC_SUBST(target_cpu_default)
3271 AC_SUBST_FILE(language_hooks)
3273 TL_AC_GNU_MAKE_GCC_LIB_PATH
3276 if test x${build} = x${host} ; then
3277 if test x${host} = x${target} ; then
3278 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3280 echo "Links are now set up to build a cross-compiler" 1>&2
3281 echo " from ${host} to ${target}." 1>&2
3284 if test x${host} = x${target} ; then
3285 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3286 echo " for ${target}." 1>&2
3288 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3289 echo " from ${host} to ${target}." 1>&2
3293 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3294 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3296 # Configure the subdirectories
3297 # AC_CONFIG_SUBDIRS($subdirs)
3299 # Create the Makefile
3300 # and configure language subdirectories
3301 AC_CONFIG_FILES($all_outputs)
3303 AC_CONFIG_COMMANDS([default],
3305 case ${CONFIG_HEADERS} in
3306 *auto-host.h:config.in*)
3309 # Make sure all the subdirs exist.
3310 for d in $subdirs doc build
3312 test -d $d || mkdir $d
3314 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3315 # bootstrapping and the installation procedure can still use
3316 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3317 # FLAGS_TO_PASS has been modified to solve the problem there.
3318 # This is virtually a duplicate of what happens in configure.lang; we do
3319 # an extra check to make sure this only happens if ln -s can be used.
3322 for d in ${subdirs} ; do
3323 STARTDIR=`${PWDCMD-pwd}`
3325 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3328 $LN_S ../$t $t 2>/dev/null
3335 [subdirs='$subdirs'])