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 "$gcc_exec_prefix_setting" != "ok"; then
98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
99 *** building gcc. Please change the environment variable
100 *** and run configure again.])
103 TL_AC_GCC_VERSION([$srcdir/..])
109 # Specify the local prefix
111 AC_ARG_WITH(local-prefix,
112 [ --with-local-prefix=DIR specifies directory to put local include],
113 [case "${withval}" in
114 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
116 *) local_prefix=$with_local_prefix ;;
119 # Default local prefix if it is empty
120 if test x$local_prefix = x; then
121 local_prefix=/usr/local
124 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
125 # passed in by the toplevel make and thus we'd get different behavior
126 # depending on where we built the sources.
128 # Specify the g++ header file directory
129 AC_ARG_WITH(gxx-include-dir,
130 [ --with-gxx-include-dir=DIR
131 specifies directory to put g++ header files],
132 [case "${withval}" in
133 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
135 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
138 if test x${gcc_gxx_include_dir} = x; then
139 if test x${enable_version_specific_runtime_libs} = xyes; then
140 gcc_gxx_include_dir='${libsubdir}/include/c++'
142 libstdcxx_incdir=c++/${gcc_version}
143 changequote(<<, >>)dnl
144 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
149 AC_ARG_WITH(cpp_install_dir,
150 [ --with-cpp-install-dir=DIR
151 install the user visible C preprocessor in DIR
152 (relative to PREFIX) as well as PREFIX/bin],
153 [if test x$withval = xyes; then
154 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
155 elif test x$withval != xno; then
156 cpp_install_dir=$withval
159 # We would like to our source tree to be readonly. However when releases or
160 # pre-releases are generated, the flex/bison generated files as well as the
161 # various formats of manuals need to be included along with the rest of the
162 # sources. Therefore we have --enable-generated-files-in-srcdir to do
165 AC_MSG_CHECKING([whether to place generated files in the source directory])
166 dnl generated-files-in-srcdir is disabled by default
167 AC_ARG_ENABLE(generated-files-in-srcdir,
168 [ --enable-generated-files-in-srcdir
169 put copies of generated files in source dir
170 intended for creating source tarballs for users
171 without texinfo bison or flex.],
172 generated_files_in_srcdir=$enableval,
173 generated_files_in_srcdir=no)
175 AC_MSG_RESULT($generated_files_in_srcdir)
177 if test "$generated_files_in_srcdir" = "yes"; then
184 # -------------------
185 # Find default linker
186 # -------------------
190 [ --with-gnu-ld arrange to work with GNU ld.],
191 gnu_ld_flag="$with_gnu_ld",
194 # With pre-defined ld
196 [ --with-ld arrange to use the specified ld (full pathname)],
197 DEFAULT_LINKER="$with_ld")
198 if test x"${DEFAULT_LINKER+set}" = x"set"; then
199 if test ! -x "$DEFAULT_LINKER"; then
200 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
201 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
204 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
205 [Define to enable the use of a default linker.])
208 AC_MSG_CHECKING([whether a default linker was specified])
209 if test x"${DEFAULT_LINKER+set}" = x"set"; then
210 if test x"$gnu_ld_flag" = x"no"; then
211 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
219 # With demangler in GNU ld
220 AC_ARG_WITH(demangler-in-ld,
221 [ --with-demangler-in-ld try to use demangler in GNU ld.],
222 demangler_in_ld="$with_demangler_in_ld",
225 # ----------------------
226 # Find default assembler
227 # ----------------------
231 [ --with-gnu-as arrange to work with GNU as],
232 gas_flag="$with_gnu_as",
236 [ --with-as arrange to use the specified as (full pathname)],
237 DEFAULT_ASSEMBLER="$with_as")
238 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
239 if test ! -x "$DEFAULT_ASSEMBLER"; then
240 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
241 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
244 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
245 [Define to enable the use of a default assembler.])
248 AC_MSG_CHECKING([whether a default assembler was specified])
249 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
250 if test x"$gas_flag" = x"no"; then
251 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
253 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
263 # If a non-executable a.out is present (e.g. created by GNU as above even if
264 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
265 # file, even when creating an executable, so an execution test fails.
266 # Remove possible default executable files to avoid this.
268 # FIXME: This really belongs into AC_PROG_CC and can be removed once
269 # Autoconf includes it.
270 rm -f a.out a.exe b.out
272 # Find the native compiler
275 # autoconf is lame and doesn't give us any substitution variable for this.
276 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
277 NO_MINUS_C_MINUS_O=yes
279 OUTPUT_OPTION='-o $@'
281 AC_SUBST(NO_MINUS_C_MINUS_O)
282 AC_SUBST(OUTPUT_OPTION)
284 # -------------------------
285 # Check C compiler features
286 # -------------------------
293 # sizeof(char) is 1 by definition.
294 AC_CHECK_SIZEOF(void *)
295 AC_CHECK_SIZEOF(short)
297 AC_CHECK_SIZEOF(long)
298 if test $ac_cv_c_long_long = yes; then
299 AC_CHECK_SIZEOF(long long)
301 if test $ac_cv_c___int64 = yes; then
302 AC_CHECK_SIZEOF(__int64)
305 # ---------------------
306 # Warnings and checking
307 # ---------------------
309 # Check $CC warning features (if it's GCC).
310 # We want to use -pedantic, but we don't want warnings about
313 # So, we only use -pedantic if we can disable those warnings.
316 [whether ${CC} accepts -Wno-long-long],
317 [ac_cv_prog_cc_w_no_long_long],
318 [save_CFLAGS="$CFLAGS"
319 CFLAGS="-Wno-long-long"
320 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
321 [ac_cv_prog_cc_w_no_long_long=yes],
322 [ac_cv_prog_cc_w_no_long_long=no])
323 CFLAGS="$save_CFLAGS"
327 [whether ${CC} accepts -Wno-variadic-macros],
328 [ac_cv_prog_cc_w_no_variadic_macros],
329 [save_CFLAGS="$CFLAGS"
330 CFLAGS="-Wno-variadic-macros"
331 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
332 [ac_cv_prog_cc_w_no_variadic_macros=yes],
333 [ac_cv_prog_cc_w_no_variadic_macros=no])
334 CFLAGS="$save_CFLAGS"
338 if test $ac_cv_prog_cc_w_no_long_long = yes \
339 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
340 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
342 AC_SUBST(strict1_warn)
344 # Add -Wold-style-definition if it's accepted
346 [whether ${CC} accepts -Wold-style-definition],
347 [ac_cv_prog_cc_w_old_style_definition],
348 [save_CFLAGS="$CFLAGS"
349 CFLAGS="-Wold-style-definition"
350 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
351 [ac_cv_prog_cc_w_old_style_definition=yes],
352 [ac_cv_prog_cc_w_old_style_definition=no])
353 CFLAGS="$save_CFLAGS"
355 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
356 strict1_warn="${strict1_warn} -Wold-style-definition"
359 # Enable -Werror, period.
360 AC_ARG_ENABLE(werror_always,
361 [ --enable-werror-always enable -Werror always], [],
362 [enable_werror_always=no])
363 if test x${enable_werror_always} = xyes ; then
364 strict1_warn="${strict1_warn} -Werror"
368 # If the native compiler is GCC, we can enable warnings even in stage1.
369 # That's useful for people building cross-compilers, or just running a
372 if test "x$GCC" = "xyes"; then
373 warn_cflags='$(GCC_WARN_CFLAGS)'
375 AC_SUBST(warn_cflags)
377 # Enable -Werror in bootstrap stage2 and later.
378 AC_ARG_ENABLE(werror,
379 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
380 [if test x$is_release = x ; then
381 # Default to "yes" on development branches.
384 # Default to "no" on release branches.
387 if test x$enable_werror = xyes ; then
392 # Enable expensive internal checks
393 AC_ARG_ENABLE(checking,
394 [ --enable-checking[=LIST]
395 enable expensive run-time checks. With LIST,
396 enable only specific categories of checks.
397 Categories are: assert,fold,gc,gcac,misc,
398 rtlflag,rtl,tree,valgrind,release,yes,all;],
399 [ac_checking_flags="${enableval}"],[
400 # Determine the default checks.
401 if test x$is_release = x ; then
402 ac_checking_flags=yes
404 ac_checking_flags=release
412 ac_gc_always_collect=
414 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
415 for check in $ac_checking_flags
418 yes) ac_assert_checking=1 ; ac_checking=1 ;
419 ac_tree_checking=1 ; ac_gc_checking=1 ;
420 ac_rtlflag_checking=1 ;;
421 no) ac_assert_checking= ; ac_checking= ;
422 ac_tree_checking= ; ac_rtl_checking= ;
423 ac_rtlflag_checking= ; ac_gc_checking= ;
424 ac_gc_always_collect= ; ac_fold_checking= ;;
425 all) ac_assert_checking=1 ; ac_checking=1 ;
426 ac_tree_checking=1 ; ac_rtl_checking=1 ;
427 ac_rtlflag_checking=1 ; ac_gc_checking=1 ;
428 ac_gc_always_collect=1 ; ac_fold_checking=1 ;;
429 release) ac_assert_checking=1 ;;
430 assert) ac_assert_checking=1 ;;
431 fold) ac_fold_checking=1 ;;
432 gc) ac_gc_checking=1 ;;
433 gcac) ac_gc_always_collect=1 ;;
434 misc) ac_checking=1 ;;
435 rtlflag) ac_rtlflag_checking=1 ;;
436 rtl) ac_rtl_checking=1 ;;
437 tree) ac_tree_checking=1 ;;
438 valgrind) ac_checking_valgrind=1 ;;
439 *) AC_MSG_ERROR(unknown check category $check) ;;
445 if test x$ac_checking != x ; then
446 AC_DEFINE(ENABLE_CHECKING, 1,
447 [Define if you want more run-time sanity checks. This one gets a grab
448 bag of miscellaneous but relatively cheap checks.])
449 nocommon_flag=-fno-common
451 AC_SUBST(nocommon_flag)
452 if test x$ac_assert_checking != x ; then
453 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
454 [Define if you want assertions enabled. This is a cheap check.])
456 if test x$ac_tree_checking != x ; then
457 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
458 [Define if you want all operations on trees (the basic data
459 structure of the front ends) to be checked for dynamic type safety
460 at runtime. This is moderately expensive. The tree browser debugging
461 routines will also be enabled by this option.
463 TREEBROWSER=tree-browser.o
465 AC_SUBST(TREEBROWSER)
466 if test x$ac_rtl_checking != x ; then
467 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
468 [Define if you want all operations on RTL (the basic data structure
469 of the optimizer and back end) to be checked for dynamic type safety
470 at runtime. This is quite expensive.])
472 if test x$ac_rtlflag_checking != x ; then
473 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
474 [Define if you want RTL flag accesses to be checked against the RTL
475 codes that are supported for each access macro. This is relatively
478 if test x$ac_gc_checking != x ; then
479 AC_DEFINE(ENABLE_GC_CHECKING, 1,
480 [Define if you want the garbage collector to do object poisoning and
481 other memory allocation checks. This is quite expensive.])
483 if test x$ac_gc_always_collect != x ; then
484 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
485 [Define if you want the garbage collector to operate in maximally
486 paranoid mode, validating the entire heap and collecting garbage at
487 every opportunity. This is extremely expensive.])
489 if test x$ac_fold_checking != x ; then
490 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
491 [Define if you want fold checked that it never destructs its argument.
492 This is quite expensive.])
494 valgrind_path_defines=
497 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
498 dnl # an if statement. This was the source of very frustrating bugs
499 dnl # in converting to autoconf 2.5x!
500 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
502 if test x$ac_checking_valgrind != x ; then
503 # It is certainly possible that there's valgrind but no valgrind.h.
504 # GCC relies on making annotations so we must have both.
505 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
507 [#include <valgrind/memcheck.h>
508 #ifndef VALGRIND_DISCARD
509 #error VALGRIND_DISCARD not defined
511 [gcc_cv_header_valgrind_memcheck_h=yes],
512 [gcc_cv_header_valgrind_memcheck_h=no])
513 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
514 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
516 [#include <memcheck.h>
517 #ifndef VALGRIND_DISCARD
518 #error VALGRIND_DISCARD not defined
520 [gcc_cv_header_memcheck_h=yes],
521 gcc_cv_header_memcheck_h=no)
522 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
523 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
524 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
525 if test "x$valgrind_path" = "x" \
526 || (test $have_valgrind_h = no \
527 && test $gcc_cv_header_memcheck_h = no \
528 && test $gcc_cv_header_valgrind_memcheck_h = no); then
529 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
531 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
532 valgrind_command="$valgrind_path -q"
533 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
534 [Define if you want to run subprograms and generated programs
535 through valgrind (a memory checker). This is extremely expensive.])
536 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
537 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
538 [Define if valgrind's valgrind/memcheck.h header is installed.])
540 if test $gcc_cv_header_memcheck_h = yes; then
541 AC_DEFINE(HAVE_MEMCHECK_H, 1,
542 [Define if valgrind's memcheck.h header is installed.])
545 AC_SUBST(valgrind_path_defines)
546 AC_SUBST(valgrind_command)
548 AC_ARG_ENABLE(mapped-location,
549 [ --enable-mapped-location location_t is fileline integer cookie],,
550 enable_mapped_location=no)
552 if test "$enable_mapped_location" = yes ; then
553 AC_DEFINE(USE_MAPPED_LOCATION, 1,
554 [Define if location_t is fileline integer cookie.])
557 # Enable code coverage collection
558 AC_ARG_ENABLE(coverage,
559 [ --enable-coverage[=LEVEL]
560 enable compiler's code coverage collection.
561 Use to measure compiler performance and locate
562 unused parts of the compiler. With LEVEL, specify
563 optimization. Values are opt, noopt,
565 [case "${enableval}" in
567 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
570 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
573 # a.k.a. --disable-coverage
577 AC_MSG_ERROR(unknown coverage setting $enableval)
581 AC_SUBST(coverage_flags)
583 AC_ARG_ENABLE(gather-detailed-mem-stats,
584 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
585 [enable_gather_detailed_mem_stats=no])
586 if test x$enable_gather_detailed_mem_stats = xyes ; then
587 AC_DEFINE(GATHER_STATISTICS, 1,
588 [Define to enable detailed memory allocation stats gathering.])
591 # -------------------------------
592 # Miscenalleous configure options
593 # -------------------------------
597 [ --with-stabs arrange to use stabs instead of host debug format],
601 # Determine whether or not multilibs are enabled.
602 AC_ARG_ENABLE(multilib,
603 [ --enable-multilib enable library support for multiple ABIs],
604 [], [enable_multilib=yes])
605 AC_SUBST(enable_multilib)
607 # Enable __cxa_atexit for C++.
608 AC_ARG_ENABLE(__cxa_atexit,
609 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
613 # Pass with no value to take the default
614 # Pass with a value to specify a thread package
615 AC_ARG_ENABLE(threads,
616 [ --enable-threads enable thread usage for target GCC
617 --enable-threads=LIB use LIB thread package for target GCC],,
620 AC_ARG_ENABLE(objc-gc,
621 [ --enable-objc-gc enable the use of Boehm's garbage collector with
622 the GNU Objective-C runtime],
623 if test x$enable_objc_gc = xno; then
631 [ --with-dwarf2 force the default debug format to be DWARF 2],
632 dwarf2="$with_dwarf2",
635 AC_ARG_ENABLE(shared,
636 [ --disable-shared don't provide a shared libgcc],
638 case $enable_shared in
642 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
643 for pkg in $enableval; do
644 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
651 ], [enable_shared=yes])
652 AC_SUBST(enable_shared)
655 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
657 case ${with_sysroot} in
658 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
659 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
662 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
663 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
665 if test "x$exec_prefix" = xNONE; then
666 if test "x$prefix" = xNONE; then
667 test_prefix=/usr/local
672 test_prefix=$exec_prefix
674 case ${TARGET_SYSTEM_ROOT} in
675 "${test_prefix}"|"${test_prefix}/"*|\
676 '${exec_prefix}'|'${exec_prefix}/'*)
677 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
678 TARGET_SYSTEM_ROOT_DEFINE="$t"
683 TARGET_SYSTEM_ROOT_DEFINE=
684 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
686 AC_SUBST(TARGET_SYSTEM_ROOT)
687 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
688 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
690 # Build with intermodule optimisations
691 AC_ARG_ENABLE(intermodule,
692 [ --enable-intermodule build the compiler in one step],
693 [case ${enable_intermodule} in
694 yes) onestep="-onestep";;
700 # Sanity check enable_languages in case someone does not run the toplevel
701 # configure # script.
702 AC_ARG_ENABLE(languages,
703 [ --enable-languages=LIST specify which front-ends to build],
704 [case ,${enable_languages}, in
706 # go safe -- we cannot be much sure without the toplevel
708 # analysis of which target libs are present and usable
712 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
717 enable_languages=c,${enable_languages}
720 [enable_languages=c])
723 for lang in ${srcdir}/*/config-lang.in
726 # The odd quoting in the next line works around
727 # an apparent bug in bash 1.12 on linux.
729 ${srcdir}/[*]/config-lang.in) ;;
731 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
732 if test "x$lang_alias" = x
734 echo "$lang doesn't set \$language." 1>&2
737 case ",$enable_languages," in
739 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
747 # -------------------------
748 # Checks for other programs
749 # -------------------------
753 # Find some useful tools
755 # We need awk to create options.c and options.h.
756 # Bail out if it's missing.
758 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
766 # By default, the Darwin ranlib will not treat common symbols as
767 # definitions when building the archive table of contents. Other
768 # ranlibs do that; pass an option to the Darwin ranlib that makes
769 # it behave similarly.
775 AC_SUBST(ranlib_flags)
779 # See if cmp has --ignore-initial.
780 gcc_AC_PROG_CMP_IGNORE_INITIAL
782 # See if we have the mktemp command.
783 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
785 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
787 # See if makeinfo has been installed and is modern enough
788 # that we can use it.
789 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
790 [GNU texinfo.* \([0-9][0-9.]*\)],
792 if test $gcc_cv_prog_makeinfo_modern = no; then
793 MAKEINFO="$MISSING makeinfo"
795 *** Makeinfo is missing or too old.
796 *** Info documentation will not be built.])
803 # Is pod2man recent enough to regenerate manpages?
804 AC_MSG_CHECKING([for recent Pod::Man])
805 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
807 GENERATED_MANPAGES=generated-manpages
812 AC_SUBST(GENERATED_MANPAGES)
815 dnl Don't use AC_PROG_LEX; we insist on flex.
816 dnl LEXLIB is not useful in gcc.
817 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
820 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
822 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
823 # check for build == host before using them.
826 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
827 && test -d ../binutils ; then
828 NM='$(objdir)/../binutils/nm-new'
830 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
834 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
835 && test -d ../binutils ; then
836 AR='$(objdir)/../binutils/ar'
838 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
842 # --------------------
843 # Checks for C headers
844 # --------------------
846 AC_MSG_CHECKING(for GNU C library)
847 AC_CACHE_VAL(gcc_cv_glibc,
849 [#include <features.h>],[
850 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
851 #error Not a GNU C library system
855 AC_MSG_RESULT($gcc_cv_glibc)
856 if test $gcc_cv_glibc = yes; then
857 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
860 # Need to reject headers which give warnings, so that the -Werror bootstrap
861 # works later. *sigh* This needs to come before all header checks.
868 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
869 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
870 sys/resource.h sys/param.h sys/times.h sys/stat.h \
871 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
873 # Check for thread headers.
874 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
875 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
877 # These tests can't be done till we know if we have limits.h.
885 # Stage specific cflags for build.
891 stage1_cflags="-Wa,-J"
897 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
898 # sources; use -no-cpp-precomp to get to GNU cpp.
899 # Apple's GCC has bugs in designated initializer handling, so disable
901 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
904 AC_SUBST(stage1_cflags)
906 # These libraries may be used by collect2.
907 # We may need a special search path to get them linked.
908 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
910 for libs in '' -lld -lmld \
911 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
912 '-L/usr/lib/cmplrs/cc3.11 -lmld'
915 AC_TRY_LINK_FUNC(ldopen,
916 [gcc_cv_collect2_libs="$libs"; break])
919 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
920 case $gcc_cv_collect2_libs in
922 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
924 AC_SUBST(COLLECT2_LIBS)
926 # When building Ada code on Alpha, we need exc_resume which is usually in
927 # -lexc. So test for it.
930 AC_SEARCH_LIBS(exc_resume, exc)
933 AC_SUBST(GNAT_LIBEXC)
935 # Some systems put ldexp and frexp in libm instead of libc; assume
936 # they're both in the same place. jcf-dump needs them.
939 AC_SEARCH_LIBS(ldexp, m)
944 # Use <inttypes.h> only if it exists,
945 # doesn't clash with <sys/types.h>, and declares intmax_t.
946 AC_MSG_CHECKING(for inttypes.h)
947 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
949 [#include <sys/types.h>
950 #include <inttypes.h>],
952 [gcc_cv_header_inttypes_h=yes],
953 gcc_cv_header_inttypes_h=no)])
954 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
955 if test $gcc_cv_header_inttypes_h = yes; then
956 AC_DEFINE(HAVE_INTTYPES_H, 1,
957 [Define if you have a working <inttypes.h> header file.])
960 dnl Disabled until we have a complete test for buggy enum bitfields.
961 dnl gcc_AC_C_ENUM_BF_UNSIGNED
963 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
964 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
965 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
966 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
969 if test x$ac_cv_func_mbstowcs = xyes; then
970 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
971 [ AC_TRY_RUN([#include <stdlib.h>
977 gcc_cv_func_mbstowcs_works=yes,
978 gcc_cv_func_mbstowcs_works=no,
979 gcc_cv_func_mbstowcs_works=yes)])
980 if test x$gcc_cv_func_mbstowcs_works = xyes; then
981 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
982 [Define this macro if mbstowcs does not crash when its
983 first argument is NULL.])
987 AC_CHECK_TYPE(ssize_t, int)
989 # Try to determine the array type of the second argument of getgroups
990 # for the target system (int or gid_t).
992 if test "${target}" = "${build}"; then
993 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
996 # This condition may need some tweaking. It should include all
997 # targets where the array type of the second argument of getgroups
998 # is int and the type of gid_t is not equivalent to int.
999 *-*-sunos* | *-*-ultrix*)
1000 TARGET_GETGROUPS_T=int
1003 TARGET_GETGROUPS_T=gid_t
1007 AC_SUBST(TARGET_GETGROUPS_T)
1009 gcc_AC_FUNC_PRINTF_PTR
1010 gcc_AC_FUNC_MMAP_BLACKLIST
1014 # Under VMS, vfork works very differently than on Unix. The standard test
1015 # won't work, and it isn't easily adaptable. It makes more sense to
1017 ac_cv_func_vfork_works=yes
1023 # Until we have in-tree GNU iconv:
1025 AC_SUBST(LIBICONV_DEP)
1031 # We will need to find libiberty.h and ansidecl.h
1032 saved_CFLAGS="$CFLAGS"
1033 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1034 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1035 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1036 fprintf_unlocked strstr errno snprintf vasprintf \
1037 malloc realloc calloc free basename getopt clock getpagesize, , ,[
1038 #include "ansidecl.h"
1039 #include "system.h"])
1041 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1042 #include "ansidecl.h"
1044 #ifdef HAVE_SYS_RESOURCE_H
1045 #include <sys/resource.h>
1050 #include "ansidecl.h"
1052 #ifdef HAVE_SYS_RESOURCE_H
1053 #include <sys/resource.h>
1055 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1056 [Define to \`long' if <sys/resource.h> doesn't define.])])
1058 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1059 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1060 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1061 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1062 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1063 #include "ansidecl.h"
1072 gcc_AC_CHECK_DECLS(times, , ,[
1073 #include "ansidecl.h"
1075 #ifdef HAVE_SYS_TIMES_H
1076 #include <sys/times.h>
1080 # More time-related stuff.
1081 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1083 #include "ansidecl.h"
1085 #ifdef HAVE_SYS_TIMES_H
1086 #include <sys/times.h>
1088 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1089 if test $ac_cv_struct_tms = yes; then
1090 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1091 [Define if <sys/times.h> defines struct tms.])
1094 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1095 # revisit after autoconf 2.50.
1096 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1098 #include "ansidecl.h"
1100 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1101 if test $gcc_cv_type_clock_t = yes; then
1102 AC_DEFINE(HAVE_CLOCK_T, 1,
1103 [Define if <time.h> defines clock_t.])
1106 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1107 CFLAGS="$saved_CFLAGS"
1109 gcc_AC_INITFINI_ARRAY
1111 # mkdir takes a single argument on some systems.
1112 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1120 # With Setjmp/Longjmp based exception handling.
1121 AC_ARG_ENABLE(sjlj-exceptions,
1122 [ --enable-sjlj-exceptions
1123 arrange to use setjmp/longjmp exception handling],
1124 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1125 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1126 [Define 0/1 to force the choice for exception handling model.])])
1128 # For platforms with the unwind ABI which includes an unwind library,
1129 # libunwind, we can choose to use the system libunwind.
1130 AC_ARG_WITH(system-libunwind,
1131 [ --with-system-libunwind use installed libunwind])
1133 # --------------------------------------------------------
1134 # Build, host, and target specific configuration fragments
1135 # --------------------------------------------------------
1137 # Collect build-machine-specific information.
1138 . ${srcdir}/config.build
1140 # Collect host-machine-specific information.
1141 . ${srcdir}/config.host
1145 # Collect target-machine-specific information.
1146 . ${srcdir}/config.gcc
1148 extra_objs="${host_extra_objs} ${extra_objs}"
1149 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1151 # Default the target-machine variables that were not explicitly set.
1152 if test x"$tm_file" = x
1153 then tm_file=$cpu_type/$cpu_type.h; fi
1155 if test x"$extra_headers" = x
1156 then extra_headers=; fi
1158 if test x$md_file = x
1159 then md_file=$cpu_type/$cpu_type.md; fi
1161 if test x$out_file = x
1162 then out_file=$cpu_type/$cpu_type.c; fi
1164 if test x"$tmake_file" = x
1165 then tmake_file=$cpu_type/t-$cpu_type
1168 if test x"$dwarf2" = xyes
1169 then tm_file="$tm_file tm-dwarf2.h"
1172 # Say what files are being used for the output code and MD file.
1173 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1174 echo "Using \`$srcdir/config/$md_file' as machine description file."
1176 # If any of the xm_file variables contain nonexistent files, warn
1177 # about them and drop them.
1180 for x in $build_xm_file; do
1181 if test -f $srcdir/config/$x
1183 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1189 for x in $host_xm_file; do
1190 if test -f $srcdir/config/$x
1192 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1198 for x in $xm_file; do
1199 if test -f $srcdir/config/$x
1201 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1207 for f in $tm_file; do
1210 if test $count = ax; then
1211 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1213 echo "Using the following target machine macro files:"
1214 for f in $tm_file; do
1215 echo " $srcdir/config/$f"
1219 if test x$need_64bit_hwint = xyes; then
1220 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1221 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1224 if test x$use_long_long_for_widest_fast_int = xyes; then
1225 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1226 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1227 efficiently supported by the host hardware.])
1231 for f in $host_xm_file; do
1234 if test $count = a; then
1236 elif test $count = ax; then
1237 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1239 echo "Using the following host machine macro files:"
1240 for f in $host_xm_file; do
1241 echo " $srcdir/config/$f"
1244 echo "Using ${out_host_hook_obj} for host machine hooks."
1246 if test "$host_xm_file" != "$build_xm_file"; then
1248 for f in $build_xm_file; do
1251 if test $count = a; then
1253 elif test $count = ax; then
1254 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1256 echo "Using the following build machine macro files:"
1257 for f in $build_xm_file; do
1258 echo " $srcdir/config/$f"
1267 # Check if a valid thread package
1268 case ${enable_threads} in
1271 target_thread_file='single'
1275 target_thread_file='single'
1277 aix | dce | gnat | irix | posix | posix95 | rtems | \
1278 single | solaris | vxworks | win32 )
1279 target_thread_file=${enable_threads}
1282 echo "${enable_threads} is an unknown thread package" 1>&2
1287 if test x${thread_file} = x; then
1288 # No thread file set by target-specific clauses in config.gcc,
1289 # so use file chosen by default logic above
1290 thread_file=${target_thread_file}
1293 # Make gthr-default.h if we have a thread file.
1295 if test $thread_file != single; then
1296 rm -f gthr-default.h
1297 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1298 gthread_flags=-DHAVE_GTHR_DEFAULT
1300 AC_SUBST(gthread_flags)
1307 if test x$enable___cxa_atexit = xyes || \
1308 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1309 if test x$host = x$target; then
1310 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1311 [echo "__cxa_atexit can't be enabled on this target"])
1313 # We can't check for __cxa_atexit when building a cross, so assume
1317 if test x$use_cxa_atexit = xyes; then
1318 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1319 [Define if you want to use __cxa_atexit, rather than atexit, to
1320 register C++ destructors for local statics and global objects.
1321 This is essential for fully standards-compliant handling of
1322 destructors, but requires __cxa_atexit in libc.])
1326 # Look for a file containing extra machine modes.
1327 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1328 extra_modes_file='$(srcdir)'/config/${extra_modes}
1329 AC_SUBST(extra_modes_file)
1330 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1331 [Define to the name of a file containing a list of extra machine modes
1332 for this architecture.])
1335 # auto-host.h is the file containing items generated by autoconf and is
1336 # the first file included by config.h.
1337 # If host=build, it is correct to have bconfig include auto-host.h
1338 # as well. If host!=build, we are in error and need to do more
1339 # work to find out the build config parameters.
1340 if test x$host = x$build
1342 build_auto=auto-host.h
1344 # We create a subdir, then run autoconf in the subdir.
1345 # To prevent recursion we set host and build for the new
1346 # invocation of configure to the build for this invocation
1353 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1354 *) realsrcdir=../${srcdir};;
1356 saved_CFLAGS="${CFLAGS}"
1357 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1358 ${realsrcdir}/configure \
1359 --enable-languages=${enable_languages-all} \
1360 --target=$target_alias --host=$build_alias --build=$build_alias
1361 CFLAGS="${saved_CFLAGS}"
1363 # We just finished tests for the build machine, so rename
1364 # the file auto-build.h in the gcc directory.
1365 mv auto-host.h ../auto-build.h
1368 build_auto=auto-build.h
1370 AC_SUBST(build_subdir)
1372 tm_file="${tm_file} defaults.h"
1373 tm_p_file="${tm_p_file} tm-preds.h"
1374 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1375 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1376 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1377 # put this back in temporarily.
1378 xm_file="ansidecl.h ${xm_file}"
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 # This is a terrible hack which will go away some day.
1523 host_cc_for_libada=${CC}
1524 AC_SUBST(host_cc_for_libada)
1526 out_object_file=`basename $out_file .c`.o
1530 for f in $tm_file; do
1533 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1534 tm_include_list="${tm_include_list} $f"
1537 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1538 tm_include_list="${tm_include_list} config/$f"
1545 for f in $tm_p_file; do
1548 tm_p_file_list="${tm_p_file_list} $f"
1549 tm_p_include_list="${tm_p_include_list} $f"
1552 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1553 tm_p_include_list="${tm_p_include_list} config/$f"
1559 for f in $xm_file; do
1562 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1563 xm_include_list="${xm_include_list} $f"
1566 xm_file_list="${xm_file_list} $f"
1567 xm_include_list="${xm_include_list} $f"
1570 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1571 xm_include_list="${xm_include_list} config/$f"
1577 host_xm_include_list=
1578 for f in $host_xm_file; do
1581 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1582 host_xm_include_list="${host_xm_include_list} $f"
1585 host_xm_file_list="${host_xm_file_list} $f"
1586 host_xm_include_list="${host_xm_include_list} $f"
1589 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1590 host_xm_include_list="${host_xm_include_list} config/$f"
1596 for f in $build_xm_file; do
1599 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1600 build_xm_include_list="${build_xm_include_list} $f"
1602 auto-build.h | auto-host.h )
1603 build_xm_file_list="${build_xm_file_list} $f"
1604 build_xm_include_list="${build_xm_include_list} $f"
1607 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1608 build_xm_include_list="${build_xm_include_list} config/$f"
1613 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1614 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1615 CROSS= AC_SUBST(CROSS)
1616 ALL=all.internal AC_SUBST(ALL)
1617 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1618 if test x$host != x$target
1620 CROSS="-DCROSS_COMPILE"
1622 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1623 case "$host","$target" in
1624 # Darwin crosses can use the host system's libraries and headers,
1625 # because of the fat library support. Of course, it must be the
1626 # same version of Darwin on both sides. Allow the user to
1627 # just say --target=foo-darwin without a version number to mean
1628 # "the version on this system".
1629 *-*-darwin*,*-*-darwin*)
1630 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1631 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1632 if test $hostos = $targetos -o $targetos = darwin ; then
1634 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1639 i?86-*-*,x86_64-*-* \
1640 | powerpc*-*-*,powerpc64*-*-*)
1641 CROSS="$CROSS -DNATIVE_CROSS" ;;
1643 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1644 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1645 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1648 # If this is a cross-compiler that does not
1649 # have its own set of headers then define
1652 # If this is using newlib, without having the headers available now,
1653 # then define inhibit_libc in LIBGCC2_CFLAGS.
1654 # This prevents libgcc2 from containing any code which requires libc
1657 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1658 test x$with_newlib = xyes ; } &&
1659 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1660 inhibit_libc=-Dinhibit_libc
1662 AC_SUBST(inhibit_libc)
1664 # When building gcc with a cross-compiler, we need to adjust things so
1665 # that the generator programs are still built with the native compiler.
1666 # Also, we cannot run fixincludes or fix-header.
1668 # These are the normal (build=host) settings:
1669 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1670 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1671 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1673 # Possibly disable fixproto, on a per-target basis.
1674 case ${use_fixproto} in
1679 STMP_FIXPROTO=stmp-fixproto
1682 AC_SUBST(STMP_FIXPROTO)
1684 # And these apply if build != host, or we are generating coverage data
1685 if test x$build != x$host || test "x$coverage_flags" != x
1687 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1689 if test "x$TARGET_SYSTEM_ROOT" = x; then
1690 if [ "x$STMP_FIXPROTO" != x ] ; then
1691 STMP_FIXPROTO=stmp-install-fixproto
1696 # Expand extra_headers to include complete path.
1697 # This substitutes for lots of t-* files.
1699 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1700 for file in ${extra_headers} ; do
1701 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1704 # Define collect2 in Makefile.
1705 case $host_can_use_collect2 in
1707 *) collect2='collect2$(exeext)' ;;
1709 AC_SUBST([collect2])
1711 # Add a definition of USE_COLLECT2 if system wants one.
1712 case $use_collect2 in
1713 no) use_collect2= ;;
1716 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1717 xm_defines="${xm_defines} USE_COLLECT2"
1718 case $host_can_use_collect2 in
1720 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1726 # ---------------------------
1727 # Assembler & linker features
1728 # ---------------------------
1730 # Identify the assembler which will work hand-in-glove with the newly
1731 # built GCC, so that we can examine its features. This is the assembler
1732 # which will be driven by the driver program.
1734 # If build != host, and we aren't building gas in-tree, we identify a
1735 # build->target assembler and hope that it will have the same features
1736 # as the host->target assembler we'll be using.
1737 AC_MSG_CHECKING(what assembler to use)
1740 gcc_cv_gas_major_version=
1741 gcc_cv_gas_minor_version=
1742 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1743 if test -x "$DEFAULT_ASSEMBLER"; then
1744 gcc_cv_as="$DEFAULT_ASSEMBLER"
1745 elif test -x as$build_exeext; then
1746 # Build using assembler in the current directory.
1747 gcc_cv_as=./as$build_exeext
1748 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1749 && test -f ../gas/Makefile \
1750 && test x$build = x$host; then
1751 # Single tree build which includes gas. We want to prefer it
1752 # over whatever linker top-level may have detected, since
1753 # we'll use what we're building after installation anyway.
1755 _gcc_COMPUTE_GAS_VERSION
1756 rm -f as$build_exeext
1757 $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1758 in_tree_gas_is_elf=no
1759 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1760 || (grep 'obj_format = multi' ../gas/Makefile \
1761 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1763 in_tree_gas_is_elf=yes
1765 m4_pattern_allow([AS_FOR_TARGET])dnl
1766 elif test -x "$AS_FOR_TARGET"; then
1767 gcc_cv_as="$AS_FOR_TARGET"
1768 elif test -x "$AS" && test x$host = x$target; then
1772 if test "x$gcc_cv_as" = x; then
1773 # Search the same directories that the installed compiler will
1774 # search. Else we may find the wrong assembler and lose. If we
1775 # do not find a suitable assembler binary, then try the user's
1778 # Also note we have to check MD_EXEC_PREFIX before checking the
1779 # user's path. Unfortunately, there is no good way to get at the
1780 # value of MD_EXEC_PREFIX here. So we do a brute force search
1781 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1782 # to be fixed as part of the make/configure rewrite too.
1784 if test "x$exec_prefix" = xNONE; then
1785 if test "x$prefix" = xNONE; then
1786 test_prefix=/usr/local
1791 test_prefix=$exec_prefix
1794 # If the loop below does not find an assembler, then use whatever
1795 # one we can find in the users's path.
1797 if test "x$program_prefix" != xNONE; then
1798 gcc_cv_as=${program_prefix}as$build_exeext
1800 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1803 if test x$host = x$build; then
1804 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1805 $test_prefix/libexec/gcc/$target_noncanonical \
1806 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1807 /usr/lib/gcc/$target_noncanonical \
1808 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1809 $test_prefix/$target_noncanonical/bin"
1814 if test x$host = x$target; then
1815 test_dirs="$test_dirs \
1820 /bsd43/usr/lib/cmplrs/cc \
1821 /usr/cross64/usr/bin \
1822 /usr/lib/cmplrs/cc \
1823 /sysv/usr/lib/cmplrs/cc \
1824 /svr4/usr/lib/cmplrs/cc \
1828 for dir in $test_dirs; do
1829 if test -x $dir/as$build_exeext; then
1830 gcc_cv_as=$dir/as$build_exeext
1835 case $in_tree_gas in
1837 AC_MSG_RESULT("newly built gas")
1840 AC_MSG_RESULT($gcc_cv_as)
1844 # Identify the linker which will work hand-in-glove with the newly
1845 # built GCC, so that we can examine its features. This is the linker
1846 # which will be driven by the driver program.
1848 # If build != host, and we aren't building gas in-tree, we identify a
1849 # build->target linker and hope that it will have the same features
1850 # as the host->target linker we'll be using.
1851 AC_MSG_CHECKING(what linker to use)
1854 gcc_cv_gld_major_version=
1855 gcc_cv_gld_minor_version=
1856 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1857 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1858 if test -x "$DEFAULT_LINKER"; then
1859 gcc_cv_ld="$DEFAULT_LINKER"
1860 elif test -x collect-ld$build_exeext; then
1861 # Build using linker in the current directory.
1862 gcc_cv_ld=./collect-ld$build_exeext
1863 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1864 && test -f ../ld/Makefile \
1865 && test x$build = x$host; then
1866 # Single tree build which includes ld. We want to prefer it
1867 # over whatever linker top-level may have detected, since
1868 # we'll use what we're building after installation anyway.
1870 in_tree_ld_is_elf=no
1871 if (grep 'EMUL = .*elf' ../ld/Makefile \
1872 || grep 'EMUL = .*linux' ../ld/Makefile \
1873 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1874 in_tree_ld_is_elf=yes
1876 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
1879 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1881 if test x$gcc_cv_gld_version != x; then
1886 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1887 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1889 rm -f collect-ld$build_exeext
1890 $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1891 elif test -x "$LD_FOR_TARGET"; then
1892 gcc_cv_ld="$LD_FOR_TARGET"
1893 elif test -x "$LD" && test x$host = x$target; then
1897 if test "x$gcc_cv_ld" = x; then
1898 # Search the same directories that the installed compiler will
1899 # search. Else we may find the wrong linker and lose. If we
1900 # do not find a suitable linker binary, then try the user's
1903 # Also note we have to check MD_EXEC_PREFIX before checking the
1904 # user's path. Unfortunately, there is no good way to get at the
1905 # value of MD_EXEC_PREFIX here. So we do a brute force search
1906 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1907 # to be fixed as part of the make/configure rewrite too.
1909 if test "x$exec_prefix" = xNONE; then
1910 if test "x$prefix" = xNONE; then
1911 test_prefix=/usr/local
1916 test_prefix=$exec_prefix
1919 # If the loop below does not find an linker, then use whatever
1920 # one we can find in the users's path.
1922 if test "x$program_prefix" != xNONE; then
1923 gcc_cv_ld=${program_prefix}ld$build_exeext
1925 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1928 if test x$host = x$build; then
1929 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1930 $test_prefix/libexec/gcc/$target_noncanonical \
1931 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1932 /usr/lib/gcc/$target_noncanonical \
1933 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1934 $test_prefix/$target_noncanonical/bin"
1939 if test x$host = x$target; then
1940 test_dirs="$test_dirs \
1945 /bsd43/usr/lib/cmplrs/cc \
1946 /usr/cross64/usr/bin \
1947 /usr/lib/cmplrs/cc \
1948 /sysv/usr/lib/cmplrs/cc \
1949 /svr4/usr/lib/cmplrs/cc \
1953 for dir in $test_dirs; do
1954 if test -x $dir/ld$build_exeext; then
1955 gcc_cv_ld=$dir/ld$build_exeext
1962 AC_MSG_RESULT("newly built ld")
1965 AC_MSG_RESULT($gcc_cv_ld)
1969 # Figure out what nm we will be using.
1970 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1971 AC_MSG_CHECKING(what nm to use)
1973 if test -x nm$build_exeext; then
1974 gcc_cv_nm=./nm$build_exeext
1975 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1976 && test -f ../binutils/Makefile; then
1977 # Single tree build which includes binutils.
1979 gcc_cv_nm=./nm$build_exeext
1980 rm -f nm$build_exeext
1981 $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1982 elif test "x$program_prefix" != xNONE; then
1983 gcc_cv_nm=${program_prefix}nm$build_exeext
1985 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1988 yes) AC_MSG_RESULT("newly built nm") ;;
1989 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1992 # Figure out what objdump we will be using.
1993 AC_MSG_CHECKING(what objdump to use)
1995 if test -x objdump$build_exeext; then
1996 gcc_cv_objdump=./objdump$build_exeext
1997 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1998 && test -f ../binutils/Makefile; then
1999 # Single tree build which includes binutils.
2001 gcc_cv_objdump=./objdump$build_exeext
2002 rm -f objdump$build_exeext
2003 $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2004 elif test "x$program_prefix" != xNONE; then
2005 gcc_cv_objdump=${program_prefix}objdump$build_exeext
2007 gcc_cv_objdump=`echo objdump | \
2008 sed "${program_transform_name}"`$build_exeext
2010 case $in_tree_objdump in
2011 yes) AC_MSG_RESULT("newly built objdump") ;;
2012 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2015 # Figure out what assembler alignment features are present.
2016 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2020 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2021 [Define if your assembler supports .balign and .p2align.])])
2023 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2026 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2027 [Define if your assembler supports specifying the maximum number
2028 of bytes to skip when using the GAS .p2align command.])])
2030 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2032 [conftest_label1: .word 0
2034 conftest_label2: .word 0
2036 [if test x$gcc_cv_nm != x; then
2037 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2038 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2039 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2041 else gcc_cv_as_subsection_m1=yes
2043 rm -f conftest.nm1 conftest.nm2
2045 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2046 [Define if your assembler supports .subsection and .subsection -1 starts
2047 emitting at the beginning of your section.])])
2049 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2052 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2054 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2057 .NSUBSPA $CODE$,COMDAT],,
2058 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2060 # .hidden needs to be supported in both the assembler and the linker,
2061 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2062 # This is irritatingly difficult to feature test for; we have to check the
2063 # date string after the version number. If we've got an in-tree
2064 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2066 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2067 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2072 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2073 [if test $in_tree_ld = yes ; then
2075 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2076 && test $in_tree_ld_is_elf = yes; then
2077 gcc_cv_ld_hidden=yes
2080 gcc_cv_ld_hidden=yes
2081 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2082 if echo "$ld_ver" | grep GNU > /dev/null; then
2084 ld_vers=`echo $ld_ver | sed -n \
2085 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2086 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2087 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2088 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2089 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2090 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2091 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2092 if test 0"$ld_date" -lt 20020404; then
2093 if test -n "$ld_date"; then
2094 # If there was date string, but was earlier than 2002-04-04, fail
2096 elif test -z "$ld_vers"; then
2097 # If there was no date string nor ld version number, something is wrong
2100 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2101 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2102 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2103 test -z "$ld_vers_patch" && ld_vers_patch=0
2104 if test "$ld_vers_major" -lt 2; then
2106 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2107 gcc_cv_ld_hidden="no"
2108 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2116 hppa64*-*-hpux* | ia64*-*-hpux*)
2117 gcc_cv_ld_hidden=yes
2125 libgcc_visibility=no
2126 AC_SUBST(libgcc_visibility)
2127 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2128 libgcc_visibility=yes
2129 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2130 [Define if your assembler and linker support .hidden.])
2133 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2134 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2142 [# GAS versions before 2.11 do not support uleb128,
2143 # despite appearing to.
2144 # ??? There exists an elf-specific test that will crash
2145 # the assembler. Perhaps it's better to figure out whether
2146 # arbitrary sections are supported and try the test.
2147 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2148 if echo "$as_ver" | grep GNU > /dev/null; then
2150 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2151 as_major=`echo $as_ver | sed 's/\..*//'`
2152 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2154 if test $as_major -eq 2 && test $as_minor -lt 11
2156 else gcc_cv_as_leb128=yes
2159 [AC_DEFINE(HAVE_AS_LEB128, 1,
2160 [Define if your assembler supports .sleb128 and .uleb128.])])
2162 # GAS versions up to and including 2.11.0 may mis-optimize
2164 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2172 .section .eh_frame,"aw",@progbits
2174 .4byte .LECIE1-.LSCIE1
2188 .4byte .LEFDE1-.LASFDE1
2190 .4byte .LASFDE1-__FRAME_BEGIN__
2198 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2199 cat > conftest.lit <<EOF
2200 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2201 0010 01000000 12000000 18000000 00000000 ................
2202 0020 08000000 04080000 0044 .........D @&t@
2204 cat > conftest.big <<EOF
2205 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2206 0010 00000001 00000012 00000018 00000000 ................
2207 0020 00000008 04000000 0844 .........D @&t@
2209 # If the assembler didn't choke, and we can objdump,
2210 # and we got the correct data, then succeed.
2211 if test x$gcc_cv_objdump != x \
2212 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2213 | tail -3 > conftest.got \
2214 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2215 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2217 gcc_cv_as_eh_frame=yes
2218 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2219 gcc_cv_as_eh_frame=buggy
2221 # Uh oh, what do we do now?
2222 gcc_cv_as_eh_frame=no
2225 if test $gcc_cv_as_eh_frame = buggy; then
2226 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2227 [Define if your assembler mis-optimizes .eh_frame data.])
2230 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2231 [elf,2,12,0], [--fatal-warnings],
2232 [.section .rodata.str, "aMS", @progbits, 1])
2233 if test $gcc_cv_as_shf_merge = no; then
2234 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2235 [elf,2,12,0], [--fatal-warnings],
2236 [.section .rodata.str, "aMS", %progbits, 1])
2238 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2239 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2240 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2242 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2243 [elf,2,15,91], [--fatal-warnings],
2244 [.section .text,"axG",@progbits,.foo,comdat])
2245 if test $gcc_cv_as_comdat_group = yes; then
2246 gcc_cv_as_comdat_group_percent=no
2248 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2249 [elf,2,15,91], [--fatal-warnings],
2250 [.section .text,"axG",%progbits,.foo,comdat])
2252 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2253 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2254 [Define 0/1 if your assembler supports COMDAT group.])
2256 # Thread-local storage - the check is heavily parametrized.
2265 .section ".tdata","awT",@progbits
2268 ldq $27,__tls_get_addr($29) !literal!1
2269 lda $16,foo($29) !tlsgd!1
2270 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2271 ldq $27,__tls_get_addr($29) !literal!2
2272 lda $16,foo($29) !tlsldm!2
2273 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2274 ldq $1,foo($29) !gotdtprel
2275 ldah $2,foo($29) !dtprelhi
2276 lda $3,foo($2) !dtprello
2277 lda $4,foo($29) !dtprel
2278 ldq $1,foo($29) !gottprel
2279 ldah $2,foo($29) !tprelhi
2280 lda $3,foo($2) !tprello
2281 lda $4,foo($29) !tprel'
2284 tls_as_opt=--fatal-warnings
2288 .section ".tdata","awT",@progbits
2297 .section ".tdata","awT",@progbits
2301 leal foo@TLSGD(,%ebx,1), %eax
2302 leal foo@TLSLDM(%ebx), %eax
2303 leal foo@DTPOFF(%eax), %edx
2304 movl foo@GOTTPOFF(%ebx), %eax
2305 subl foo@GOTTPOFF(%ebx), %eax
2306 addl foo@GOTNTPOFF(%ebx), %eax
2307 movl foo@INDNTPOFF, %eax
2308 movl $foo@TPOFF, %eax
2309 subl $foo@TPOFF, %eax
2310 leal foo@NTPOFF(%ecx), %eax'
2313 tls_as_opt=--fatal-warnings
2317 .section ".tdata","awT",@progbits
2321 leaq foo@TLSGD(%rip), %rdi
2322 leaq foo@TLSLD(%rip), %rdi
2323 leaq foo@DTPOFF(%rax), %rdx
2324 movq foo@GOTTPOFF(%rip), %rax
2325 movq $foo@TPOFF, %rax'
2328 tls_as_opt=--fatal-warnings
2332 .section ".tdata","awT",@progbits
2335 addl r16 = @ltoff(@dtpmod(foo#)), gp
2336 addl r17 = @ltoff(@dtprel(foo#)), gp
2337 addl r18 = @ltoff(@tprel(foo#)), gp
2338 addl r19 = @dtprel(foo#), gp
2339 adds r21 = @dtprel(foo#), r13
2340 movl r23 = @dtprel(foo#)
2341 addl r20 = @tprel(foo#), gp
2342 adds r22 = @tprel(foo#), r13
2343 movl r24 = @tprel(foo#)'
2346 tls_as_opt=--fatal-warnings
2350 .section ".tdata","awT",@progbits
2358 addi 3,31,ld0@got@tlsgd
2360 addi 3,31,x1@got@tlsld
2363 addis 9,3,x2@dtprel@ha
2364 addi 9,9,x2@dtprel@l
2365 lwz 9,x3@got@tprel(31)
2368 addis 9,2,x2@tprel@ha
2369 addi 9,9,x2@tprel@l'
2372 tls_as_opt="-a32 --fatal-warnings"
2376 .section ".tdata","awT",@progbits
2384 addi 3,2,ld0@got@tlsgd
2390 addi 3,2,x1@got@tlsld
2396 addis 9,3,x2@dtprel@ha
2397 addi 9,9,x2@dtprel@l
2400 ld 9,x3@got@dtprel(2)
2406 tls_as_opt="-a64 --fatal-warnings"
2410 .section ".tdata","awT",@progbits
2419 l %r1,foo@GOTNTPOFF(%r12)
2420 l %r1,0(%r1):tls_load:foo
2421 bas %r14,0(%r1,%r13):tls_gdcall:foo
2422 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2425 tls_as_opt="-m31 --fatal-warnings"
2429 .section ".tdata","awT",@progbits
2437 lg %r1,foo@GOTNTPOFF(%r12)
2438 larl %r1,foo@INDNTPOFF
2439 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2440 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2443 tls_as_opt="-m64 -Aesame --fatal-warnings"
2445 sh-*-* | sh[34]-*-*)
2447 .section ".tdata","awT",@progbits
2457 tls_as_opt=--fatal-warnings
2461 sparc*-sun-solaris2.*)
2468 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2470 .section ".tdata",#alloc,#write,#tls
2473 sethi %tgd_hi22(foo), %o0
2474 add %o0, %tgd_lo10(foo), %o1
2475 add %l7, %o1, %o0, %tgd_add(foo)
2476 call __tls_get_addr, %tgd_call(foo)
2477 sethi %tldm_hi22(foo), %l1
2478 add %l1, %tldm_lo10(foo), %l2
2479 add %l7, %l2, %o0, %tldm_add(foo)
2480 call __tls_get_addr, %tldm_call(foo)
2481 sethi %tldo_hix22(foo), %l3
2482 xor %l3, %tldo_lox10(foo), %l4
2483 add %o0, %l4, %l5, %tldo_add(foo)
2484 sethi %tie_hi22(foo), %o3
2485 add %o3, %tie_lo10(foo), %o3
2486 ld [%l7 + %o3], %o2, %tie_ld(foo)
2487 add %g7, %o2, %o4, %tie_add(foo)
2488 sethi %tle_hix22(foo), %l1
2489 xor %l1, %tle_lox10(foo), %o5
2490 ld [%g7 + %o5], %o1'
2495 .section ".tdata","awT",@progbits
2498 sethi %tgd_hi22(foo), %o0
2499 add %o0, %tgd_lo10(foo), %o1
2500 add %l7, %o1, %o0, %tgd_add(foo)
2501 call __tls_get_addr, %tgd_call(foo)
2502 sethi %tldm_hi22(foo), %l1
2503 add %l1, %tldm_lo10(foo), %l2
2504 add %l7, %l2, %o0, %tldm_add(foo)
2505 call __tls_get_addr, %tldm_call(foo)
2506 sethi %tldo_hix22(foo), %l3
2507 xor %l3, %tldo_lox10(foo), %l4
2508 add %o0, %l4, %l5, %tldo_add(foo)
2509 sethi %tie_hi22(foo), %o3
2510 add %o3, %tie_lo10(foo), %o3
2511 ld [%l7 + %o3], %o2, %tie_ld(foo)
2512 add %g7, %o2, %o4, %tie_add(foo)
2513 sethi %tle_hix22(foo), %l1
2514 xor %l1, %tle_lox10(foo), %o5
2515 ld [%g7 + %o5], %o1'
2518 tls_as_opt="-32 --fatal-warnings"
2523 if test -z "$tls_first_major"; then
2524 : # If we don't have a check, assume no support.
2526 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2527 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2528 [AC_DEFINE(HAVE_AS_TLS, 1,
2529 [Define if your assembler supports thread-local storage.])])
2532 # Target-specific assembler checks.
2534 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2535 gcc_cv_ld_static_dynamic=no
2536 if test $in_tree_ld = yes ; then
2537 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2538 gcc_cv_ld_static_dynamic=yes
2540 elif test x$gcc_cv_ld != x; then
2541 # Check if linker supports -Bstatic/-Bdynamic option
2542 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2543 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2544 gcc_cv_ld_static_dynamic=yes
2547 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2548 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2549 [Define if your linker supports -Bstatic/-Bdynamic option.])
2551 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2553 if test x"$demangler_in_ld" = xyes; then
2554 AC_MSG_CHECKING(linker --demangle support)
2555 gcc_cv_ld_demangle=no
2556 if test $in_tree_ld = yes; then
2557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2558 gcc_cv_ld_demangle=yes
2560 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2561 # Check if the GNU linker supports --demangle option
2562 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2563 gcc_cv_ld_demangle=yes
2566 if test x"$gcc_cv_ld_demangle" = xyes; then
2567 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2568 [Define if your linker supports --demangle option.])
2570 AC_MSG_RESULT($gcc_cv_ld_demangle)
2574 # All TARGET_ABI_OSF targets.
2575 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2576 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2577 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2580 extbl $3, $2, $3 !lituse_bytoff!1
2581 ldq $2, a($29) !literal!1
2582 ldq $4, b($29) !literal!2
2583 ldq_u $3, 0($2) !lituse_base!1
2584 ldq $27, f($29) !literal!5
2585 jsr $26, ($27), f !lituse_jsr!5
2586 ldah $29, 0($26) !gpdisp!3
2587 lda $0, c($29) !gprel
2588 ldah $1, d($29) !gprelhigh
2589 lda $1, d($1) !gprellow
2590 lda $29, 0($29) !gpdisp!3],,
2591 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2592 [Define if your assembler supports explicit relocations.])])
2596 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2597 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2598 [-no-mul-bug-abort], [.text],,
2599 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2600 [Define if your assembler supports the -no-mul-bug-abort option.])])
2604 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2605 [.register %g2, #scratch],,
2606 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2607 [Define if your assembler supports .register.])])
2609 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2611 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2612 [Define if your assembler supports -relax option.])])
2614 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2615 gcc_cv_as_sparc_ua_pcrel,,
2623 .uaword %r_disp32(foo)],
2624 [if test x$gcc_cv_ld != x \
2625 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2626 gcc_cv_as_sparc_ua_pcrel=yes
2629 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2630 [Define if your assembler and linker support unaligned PC relative relocs.])
2632 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2633 gcc_cv_as_sparc_ua_pcrel_hidden,,
2638 .uaword %r_disp32(foo)
2639 .byte 0x32, 0x33, 0x34
2644 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2645 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2646 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2647 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2648 if $gcc_cv_objdump -R conftest 2> /dev/null \
2649 | grep 'DISP32' > /dev/null 2>&1; then
2652 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2656 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2657 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2658 ]) # unaligned pcrel relocs
2660 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2661 gcc_cv_as_sparc_offsetable_lo10,,
2664 or %g1, %lo(ab) + 12, %g1
2665 or %g1, %lo(ab + 12), %g1],
2666 [if test x$gcc_cv_objdump != x \
2667 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2668 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2669 gcc_cv_as_sparc_offsetable_lo10=yes
2671 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2672 [Define if your assembler supports offsetable %lo().])])
2676 i[34567]86-*-* | x86_64-*-*)
2679 cygwin* | pe | mingw32*)
2680 # Used for DWARF 2 in PE
2681 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2682 gcc_cv_as_ix86_pe_secrel32,
2688 [if test x$gcc_cv_ld != x \
2689 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2690 gcc_cv_as_ix86_pe_secrel32=yes
2693 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2694 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2698 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2699 gcc_cv_as_ix86_filds_fists,
2700 [2,9,0],, [filds mem; fists mem],,
2701 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2702 [Define if your assembler uses the new HImode fild and fist notation.])])
2704 gcc_GAS_CHECK_FEATURE([cmov syntax],
2705 gcc_cv_as_ix86_cmov_sun_syntax,,,
2706 [cmovl.l %edx, %eax],,
2707 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2708 [Define if your assembler supports the Sun syntax for cmov.])])
2710 # This one is used unconditionally by i386.[ch]; it is to be defined
2711 # to 1 if the feature is present, 0 otherwise.
2712 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2713 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2719 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2720 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2721 [Define true if the assembler supports '.long foo@GOTOFF'.])
2725 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2726 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2728 addl r15 = @ltoffx(x#), gp
2730 ld8.mov r16 = [[r15]], x#],,
2731 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2732 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2738 *-*-aix*) conftest_s=' .csect .text[[PR]]
2741 gcc_GAS_CHECK_FEATURE([.machine directive support],
2742 gcc_cv_as_machine_directive,,,
2743 [ .machine ppc7400])
2744 if test x$gcc_cv_as_machine_directive != xyes; then
2745 echo "*** This target requires an assembler supporting \".machine\"" >&2
2746 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2747 test x$build = x$target && exit 1
2751 *) conftest_s=' .machine power4
2756 gcc_GAS_CHECK_FEATURE([mfcr field support],
2757 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2759 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2760 [Define if your assembler supports mfcr field.])])
2764 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2765 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2766 [ lw $4,%gp_rel(foo)($4)],,
2767 [if test x$target_cpu_default = x
2768 then target_cpu_default=MASK_EXPLICIT_RELOCS
2769 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2772 if test x$gas_flag = xyes \
2773 || test x"$host" != x"$build" \
2774 || test ! -x "$gcc_cv_as" \
2775 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2778 echo "*** This configuration requires the GNU assembler" >&2
2783 # ??? Not all targets support dwarf2 debug_line, even within a version
2784 # of gas. Moreover, we need to emit a valid instruction to trigger any
2785 # info to the output file. So, as supported targets are added to gas 2.11,
2786 # add some instruction here to (also) show we expect this might work.
2787 # ??? Once 2.11 is released, probably need to add first known working
2788 # version to the per-target configury.
2790 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2791 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2792 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2795 ia64*-*-* | s390*-*-*)
2802 if test x"$insn" != x; then
2804 .file 1 \"conftest.s\"
2807 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2808 gcc_cv_as_dwarf2_debug_line,
2809 [elf,2,11,0],, [$conftest_s],
2810 [if test x$gcc_cv_objdump != x \
2811 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2812 | grep debug_line > /dev/null 2>&1; then
2813 gcc_cv_as_dwarf2_debug_line=yes
2816 # The .debug_line file table must be in the exact order that
2817 # we specified the files, since these indices are also used
2818 # by DW_AT_decl_file. Approximate this test by testing if
2819 # the assembler bitches if the same index is assigned twice.
2820 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2821 gcc_cv_as_dwarf2_file_buggy,,,
2825 if test $gcc_cv_as_dwarf2_debug_line = yes \
2826 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2827 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2828 [Define if your assembler supports dwarf2 .file/.loc directives,
2829 and preserves file table indices exactly as given.])
2832 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2833 gcc_cv_as_gdwarf2_flag,
2834 [elf,2,11,0], [--gdwarf2], [$insn],,
2835 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2836 [Define if your assembler supports the --gdwarf2 option.])])
2838 gcc_GAS_CHECK_FEATURE([--gstabs option],
2839 gcc_cv_as_gstabs_flag,
2840 [elf,2,11,0], [--gstabs], [$insn],
2841 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2842 # and warns about it, but still exits successfully. So check for
2844 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2846 else gcc_cv_as_gstabs_flag=yes
2848 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2849 [Define if your assembler supports the --gstabs option.])])
2852 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2853 gcc_cv_ld_ro_rw_mix=unknown
2854 if test $in_tree_ld = yes ; then
2855 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2856 && test $in_tree_ld_is_elf = yes; then
2857 gcc_cv_ld_ro_rw_mix=read-write
2859 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2860 echo '.section myfoosect, "a"' > conftest1.s
2861 echo '.section myfoosect, "aw"' > conftest2.s
2862 echo '.byte 1' >> conftest2.s
2863 echo '.section myfoosect, "a"' > conftest3.s
2864 echo '.byte 0' >> conftest3.s
2865 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2866 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2867 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2868 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2869 conftest2.o conftest3.o > /dev/null 2>&1; then
2870 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2871 | sed -e '/myfoosect/!d' -e N`
2872 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2873 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2874 gcc_cv_ld_ro_rw_mix=read-only
2876 gcc_cv_ld_ro_rw_mix=read-write
2881 rm -f conftest.* conftest[123].*
2884 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2885 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2886 [Define if your linker links a mix of read-only
2887 and read-write sections into a read-write section.])
2889 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2891 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2892 gcc_cv_ld_eh_frame_hdr=no
2893 if test $in_tree_ld = yes ; then
2894 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2895 && test $in_tree_ld_is_elf = yes; then
2896 gcc_cv_ld_eh_frame_hdr=yes
2898 elif test x$gcc_cv_ld != x; then
2899 # Check if linker supports --eh-frame-hdr option
2900 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2901 gcc_cv_ld_eh_frame_hdr=yes
2904 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2905 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2906 [Define if your linker supports --eh-frame-hdr option.])
2908 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2910 AC_MSG_CHECKING(linker position independent executable support)
2912 if test $in_tree_ld = yes ; then
2913 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2914 && test $in_tree_ld_is_elf = yes; then
2917 elif test x$gcc_cv_ld != x; then
2918 # Check if linker supports -pie option
2919 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2923 if test x"$gcc_cv_ld_pie" = xyes; then
2924 AC_DEFINE(HAVE_LD_PIE, 1,
2925 [Define if your linker supports -pie option.])
2927 AC_MSG_RESULT($gcc_cv_ld_pie)
2933 AC_CACHE_CHECK(linker --as-needed support,
2934 gcc_cv_ld_as_needed,
2935 [gcc_cv_ld_as_needed=no
2936 if test $in_tree_ld = yes ; then
2937 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2938 && test $in_tree_ld_is_elf = yes; then
2939 gcc_cv_ld_as_needed=yes
2941 elif test x$gcc_cv_ld != x; then
2942 # Check if linker supports --as-needed and --no-as-needed options
2943 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2944 gcc_cv_ld_as_needed=yes
2948 if test x"$gcc_cv_ld_as_needed" = xyes; then
2949 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2950 [Define if your linker supports --as-needed and --no-as-needed options.])
2954 powerpc64*-*-linux*)
2955 AC_CACHE_CHECK(linker support for omitting dot symbols,
2956 gcc_cv_ld_no_dot_syms,
2957 [gcc_cv_ld_no_dot_syms=no
2958 if test $in_tree_ld = yes ; then
2959 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2960 gcc_cv_ld_no_dot_syms=yes
2962 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2963 cat > conftest1.s <<EOF
2967 cat > conftest2.s <<EOF
2968 .section ".opd","aw"
2973 .quad .LEfoo,.TOC.@tocbase,0
2979 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2980 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2981 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2982 gcc_cv_ld_no_dot_syms=yes
2984 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2987 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2988 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2989 [Define if your PowerPC64 linker only needs function descriptor syms.])
2994 if test x$with_sysroot = x && test x$host = x$target \
2995 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2996 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2997 [Define to PREFIX/include if cpp should also search that directory.])
3000 # Find out what GC implementation we want, or may, use.
3002 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3009 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3014 echo "Using $GGC for garbage collection."
3016 # Use the system's zlib library.
3018 zlibinc="-I\$(srcdir)/../zlib"
3019 AC_ARG_WITH(system-zlib,
3020 [ --with-system-zlib use installed libz],
3027 dnl Very limited version of automake's enable-maintainer-mode
3029 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3030 dnl maintainer-mode is disabled by default
3031 AC_ARG_ENABLE(maintainer-mode,
3032 [ --enable-maintainer-mode
3033 enable make rules and dependencies not useful
3034 (and sometimes confusing) to the casual installer],
3035 maintainer_mode=$enableval,
3038 AC_MSG_RESULT($maintainer_mode)
3040 if test "$maintainer_mode" = "yes"; then
3051 # Make empty files to contain the specs and options for each language.
3052 # Then add #include lines to for a compiler that has specs and/or options.
3057 for subdir in . $subdirs
3059 if test -f $srcdir/$subdir/lang.opt; then
3060 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3062 if test -f $srcdir/$subdir/lang-specs.h; then
3063 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3065 if test -f $srcdir/$subdir/$subdir-tree.def; then
3066 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3070 # These (without "all_") are set in each config-lang.in.
3071 # `language' must be a single word so is spelled singularly.
3076 all_outputs='Makefile gccbug mklibgcc libada-mk'
3077 # List of language makefile fragments.
3079 # List of language subdirectory makefiles. Deprecated.
3081 # Files for gengtype
3082 all_gtfiles="$target_gtfiles"
3083 # Files for gengtype with language
3084 all_gtfiles_files_langs=
3085 all_gtfiles_files_files=
3087 # Add the language fragments.
3088 # Languages are added via two mechanisms. Some information must be
3089 # recorded in makefile variables, these are defined in config-lang.in.
3090 # We accumulate them and plug them into the main Makefile.
3091 # The other mechanism is a set of hooks for each of the main targets
3092 # like `clean', `install', etc.
3094 language_hooks="Make-hooks"
3104 . ${srcdir}/$s/config-lang.in
3105 if test "x$language" = x
3107 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3110 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3111 if test -f ${srcdir}/$s/Makefile.in
3112 then all_lang_makefiles="$s/Makefile"
3114 all_languages="$all_languages $language"
3115 if test "x$boot_language" = xyes
3117 all_boot_languages="$all_boot_languages $language"
3119 all_compilers="$all_compilers $compilers"
3120 all_stagestuff="$all_stagestuff $stagestuff"
3121 all_outputs="$all_outputs $outputs"
3122 all_gtfiles="$all_gtfiles $gtfiles"
3125 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3126 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3130 # Pick up gtfiles for c
3133 . ${srcdir}/c-config-lang.in
3134 all_gtfiles="$all_gtfiles $gtfiles"
3137 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3138 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3142 for language in $all_languages
3144 check_languages="$check_languages check-$language"
3147 # We link each language in with a set of hooks, reached indirectly via
3152 target_list="all.build all.cross start.encap rest.encap tags \
3153 install-normal install-common install-man \
3154 uninstall info man srcextra srcman srcinfo \
3155 mostlyclean clean distclean maintainer-clean \
3156 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3157 for t in $target_list
3160 for lang in $all_languages
3164 echo "lang.$t: $x" >> Make-hooks
3173 echo "dir ." > .gdbinit
3174 echo "dir ${srcdir}" >> .gdbinit
3175 if test x$gdb_needs_out_file_path = xyes
3177 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3179 if test "x$subdirs" != x; then
3182 echo "dir ${srcdir}/$s" >> .gdbinit
3185 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3187 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3188 # absolute path for gcc_tooldir based on inserting the number of up-directory
3189 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3190 # $(libsubdir)/@(unlibsubdir) based path.
3191 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3192 # make and thus we'd get different behavior depending on where we built the
3194 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3195 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3197 changequote(<<, >>)dnl
3198 # An explanation of the sed strings:
3199 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3200 # -e 's|/$||' match a trailing forward slash and eliminates it
3201 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3202 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3204 # (*) Note this pattern overwrites the first character of the string
3205 # with a forward slash if one is not already present. This is not a
3206 # problem because the exact names of the sub-directories concerned is
3207 # unimportant, just the number of them matters.
3209 # The practical upshot of these patterns is like this:
3211 # prefix exec_prefix result
3212 # ------ ----------- ------
3214 # /foo/ /foo/bar ../
3215 # /foo /foo/bar/ ../
3216 # /foo/ /foo/bar/ ../
3217 # /foo /foo/bar/ugg ../../
3220 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3221 changequote([, ])dnl
3223 AC_SUBST(gcc_tooldir)
3226 # Find a directory in which to install a shared libgcc.
3228 AC_ARG_ENABLE(version-specific-runtime-libs,
3229 [ --enable-version-specific-runtime-libs
3230 specify that runtime libraries should be
3231 installed in a compiler-specific directory])
3233 AC_ARG_WITH(slibdir,
3234 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3235 slibdir="$with_slibdir",
3236 if test "${enable_version_specific_runtime_libs+set}" = set; then
3237 slibdir='$(libsubdir)'
3238 elif test "$host" != "$target"; then
3239 slibdir='$(build_tooldir)/lib'
3245 objdir=`${PWDCMD-pwd}`
3248 # Substitute configuration variables
3251 AC_SUBST(all_boot_languages)
3252 AC_SUBST(all_compilers)
3253 AC_SUBST(all_gtfiles)
3254 AC_SUBST(all_gtfiles_files_langs)
3255 AC_SUBST(all_gtfiles_files_files)
3256 AC_SUBST(all_lang_makefrags)
3257 AC_SUBST(all_lang_makefiles)
3258 AC_SUBST(all_languages)
3259 AC_SUBST(all_stagestuff)
3260 AC_SUBST(build_exeext)
3261 AC_SUBST(build_install_headers_dir)
3262 AC_SUBST(build_xm_file_list)
3263 AC_SUBST(build_xm_include_list)
3264 AC_SUBST(build_xm_defines)
3265 AC_SUBST(check_languages)
3266 AC_SUBST(cc_set_by_configure)
3267 AC_SUBST(quoted_cc_set_by_configure)
3268 AC_SUBST(cpp_install_dir)
3269 AC_SUBST(xmake_file)
3270 AC_SUBST(tmake_file)
3271 AC_SUBST(extra_gcc_objs)
3272 AC_SUBST(extra_headers_list)
3273 AC_SUBST(extra_objs)
3274 AC_SUBST(extra_parts)
3275 AC_SUBST(extra_passes)
3276 AC_SUBST(extra_programs)
3277 AC_SUBST(float_h_file)
3278 AC_SUBST(gcc_config_arguments)
3279 AC_SUBST(gcc_gxx_include_dir)
3280 AC_SUBST(libstdcxx_incdir)
3281 AC_SUBST(host_exeext)
3282 AC_SUBST(host_xm_file_list)
3283 AC_SUBST(host_xm_include_list)
3284 AC_SUBST(host_xm_defines)
3285 AC_SUBST(out_host_hook_obj)
3287 AC_SUBST(lang_opt_files)
3288 AC_SUBST(lang_specs_files)
3289 AC_SUBST(lang_tree_files)
3290 AC_SUBST(local_prefix)
3292 AC_SUBST(objc_boehm_gc)
3294 AC_SUBST(out_object_file)
3295 AC_SUBST(stage_prefix_set_by_configure)
3296 AC_SUBST(quoted_stage_prefix_set_by_configure)
3297 AC_SUBST(thread_file)
3298 AC_SUBST(tm_file_list)
3299 AC_SUBST(tm_include_list)
3300 AC_SUBST(tm_defines)
3301 AC_SUBST(tm_p_file_list)
3302 AC_SUBST(tm_p_include_list)
3303 AC_SUBST(xm_file_list)
3304 AC_SUBST(xm_include_list)
3305 AC_SUBST(xm_defines)
3306 AC_SUBST(c_target_objs)
3307 AC_SUBST(cxx_target_objs)
3308 AC_SUBST(target_cpu_default)
3310 AC_SUBST_FILE(language_hooks)
3312 TL_AC_GNU_MAKE_GCC_LIB_PATH
3315 if test x${build} = x${host} ; then
3316 if test x${host} = x${target} ; then
3317 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3319 echo "Links are now set up to build a cross-compiler" 1>&2
3320 echo " from ${host} to ${target}." 1>&2
3323 if test x${host} = x${target} ; then
3324 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3325 echo " for ${target}." 1>&2
3327 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3328 echo " from ${host} to ${target}." 1>&2
3332 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3333 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3335 # Configure the subdirectories
3336 # AC_CONFIG_SUBDIRS($subdirs)
3338 # Create the Makefile
3339 # and configure language subdirectories
3340 AC_CONFIG_FILES($all_outputs)
3342 AC_CONFIG_COMMANDS([default],
3344 case ${CONFIG_HEADERS} in
3345 *auto-host.h:config.in*)
3348 # Make sure all the subdirs exist.
3349 for d in $subdirs doc build
3351 test -d $d || mkdir $d
3353 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3354 # bootstrapping and the installation procedure can still use
3355 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3356 # FLAGS_TO_PASS has been modified to solve the problem there.
3357 # This is virtually a duplicate of what happens in configure.lang; we do
3358 # an extra check to make sure this only happens if ln -s can be used.
3361 for d in ${subdirs} ; do
3362 STARTDIR=`${PWDCMD-pwd}`
3364 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3367 $LN_S ../$t $t 2>/dev/null
3374 [subdirs='$subdirs'])