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 when a gnattools directory
1524 cc_for_cross_gnattools=${CC}
1525 AC_SUBST(cc_for_cross_gnattools)
1527 out_object_file=`basename $out_file .c`.o
1531 for f in $tm_file; do
1534 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1535 tm_include_list="${tm_include_list} $f"
1538 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1539 tm_include_list="${tm_include_list} config/$f"
1546 for f in $tm_p_file; do
1549 tm_p_file_list="${tm_p_file_list} $f"
1550 tm_p_include_list="${tm_p_include_list} $f"
1553 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1554 tm_p_include_list="${tm_p_include_list} config/$f"
1560 for f in $xm_file; do
1563 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1564 xm_include_list="${xm_include_list} $f"
1567 xm_file_list="${xm_file_list} $f"
1568 xm_include_list="${xm_include_list} $f"
1571 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1572 xm_include_list="${xm_include_list} config/$f"
1578 host_xm_include_list=
1579 for f in $host_xm_file; do
1582 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1583 host_xm_include_list="${host_xm_include_list} $f"
1586 host_xm_file_list="${host_xm_file_list} $f"
1587 host_xm_include_list="${host_xm_include_list} $f"
1590 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1591 host_xm_include_list="${host_xm_include_list} config/$f"
1597 for f in $build_xm_file; do
1600 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1601 build_xm_include_list="${build_xm_include_list} $f"
1603 auto-build.h | auto-host.h )
1604 build_xm_file_list="${build_xm_file_list} $f"
1605 build_xm_include_list="${build_xm_include_list} $f"
1608 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1609 build_xm_include_list="${build_xm_include_list} config/$f"
1614 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1615 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1616 CROSS= AC_SUBST(CROSS)
1617 ALL=all.internal AC_SUBST(ALL)
1618 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1619 if test x$host != x$target
1621 CROSS="-DCROSS_COMPILE"
1623 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1624 case "$host","$target" in
1625 # Darwin crosses can use the host system's libraries and headers,
1626 # because of the fat library support. Of course, it must be the
1627 # same version of Darwin on both sides. Allow the user to
1628 # just say --target=foo-darwin without a version number to mean
1629 # "the version on this system".
1630 *-*-darwin*,*-*-darwin*)
1631 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1632 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1633 if test $hostos = $targetos -o $targetos = darwin ; then
1635 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1640 i?86-*-*,x86_64-*-* \
1641 | powerpc*-*-*,powerpc64*-*-*)
1642 CROSS="$CROSS -DNATIVE_CROSS" ;;
1644 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1645 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1646 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1649 # If this is a cross-compiler that does not
1650 # have its own set of headers then define
1653 # If this is using newlib, without having the headers available now,
1654 # then define inhibit_libc in LIBGCC2_CFLAGS.
1655 # This prevents libgcc2 from containing any code which requires libc
1658 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1659 test x$with_newlib = xyes ; } &&
1660 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1661 inhibit_libc=-Dinhibit_libc
1663 AC_SUBST(inhibit_libc)
1665 # When building gcc with a cross-compiler, we need to adjust things so
1666 # that the generator programs are still built with the native compiler.
1667 # Also, we cannot run fixincludes or fix-header.
1669 # These are the normal (build=host) settings:
1670 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1671 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1672 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1674 # Possibly disable fixproto, on a per-target basis.
1675 case ${use_fixproto} in
1680 STMP_FIXPROTO=stmp-fixproto
1683 AC_SUBST(STMP_FIXPROTO)
1685 # And these apply if build != host, or we are generating coverage data
1686 if test x$build != x$host || test "x$coverage_flags" != x
1688 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1690 if test "x$TARGET_SYSTEM_ROOT" = x; then
1691 if [ "x$STMP_FIXPROTO" != x ] ; then
1692 STMP_FIXPROTO=stmp-install-fixproto
1697 # Expand extra_headers to include complete path.
1698 # This substitutes for lots of t-* files.
1700 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1701 for file in ${extra_headers} ; do
1702 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1705 # Define collect2 in Makefile.
1706 case $host_can_use_collect2 in
1708 *) collect2='collect2$(exeext)' ;;
1710 AC_SUBST([collect2])
1712 # Add a definition of USE_COLLECT2 if system wants one.
1713 case $use_collect2 in
1714 no) use_collect2= ;;
1717 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1718 xm_defines="${xm_defines} USE_COLLECT2"
1719 case $host_can_use_collect2 in
1721 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1727 # ---------------------------
1728 # Assembler & linker features
1729 # ---------------------------
1731 # Identify the assembler which will work hand-in-glove with the newly
1732 # built GCC, so that we can examine its features. This is the assembler
1733 # which will be driven by the driver program.
1735 # If build != host, and we aren't building gas in-tree, we identify a
1736 # build->target assembler and hope that it will have the same features
1737 # as the host->target assembler we'll be using.
1738 AC_MSG_CHECKING(what assembler to use)
1741 gcc_cv_gas_major_version=
1742 gcc_cv_gas_minor_version=
1743 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1744 if test -x "$DEFAULT_ASSEMBLER"; then
1745 gcc_cv_as="$DEFAULT_ASSEMBLER"
1746 elif test -x as$build_exeext; then
1747 # Build using assembler in the current directory.
1748 gcc_cv_as=./as$build_exeext
1749 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1750 && test -f ../gas/Makefile \
1751 && test x$build = x$host; then
1752 # Single tree build which includes gas. We want to prefer it
1753 # over whatever linker top-level may have detected, since
1754 # we'll use what we're building after installation anyway.
1756 _gcc_COMPUTE_GAS_VERSION
1757 rm -f as$build_exeext
1758 $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1759 in_tree_gas_is_elf=no
1760 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1761 || (grep 'obj_format = multi' ../gas/Makefile \
1762 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1764 in_tree_gas_is_elf=yes
1766 m4_pattern_allow([AS_FOR_TARGET])dnl
1767 elif test -x "$AS_FOR_TARGET"; then
1768 gcc_cv_as="$AS_FOR_TARGET"
1769 elif test -x "$AS" && test x$host = x$target; then
1773 if test "x$gcc_cv_as" = x; then
1774 # Search the same directories that the installed compiler will
1775 # search. Else we may find the wrong assembler and lose. If we
1776 # do not find a suitable assembler binary, then try the user's
1779 # Also note we have to check MD_EXEC_PREFIX before checking the
1780 # user's path. Unfortunately, there is no good way to get at the
1781 # value of MD_EXEC_PREFIX here. So we do a brute force search
1782 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1783 # to be fixed as part of the make/configure rewrite too.
1785 if test "x$exec_prefix" = xNONE; then
1786 if test "x$prefix" = xNONE; then
1787 test_prefix=/usr/local
1792 test_prefix=$exec_prefix
1795 # If the loop below does not find an assembler, then use whatever
1796 # one we can find in the users's path.
1798 if test "x$program_prefix" != xNONE; then
1799 gcc_cv_as=${program_prefix}as$build_exeext
1801 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1804 if test x$host = x$build; then
1805 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1806 $test_prefix/libexec/gcc/$target_noncanonical \
1807 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1808 /usr/lib/gcc/$target_noncanonical \
1809 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1810 $test_prefix/$target_noncanonical/bin"
1815 if test x$host = x$target; then
1816 test_dirs="$test_dirs \
1821 /bsd43/usr/lib/cmplrs/cc \
1822 /usr/cross64/usr/bin \
1823 /usr/lib/cmplrs/cc \
1824 /sysv/usr/lib/cmplrs/cc \
1825 /svr4/usr/lib/cmplrs/cc \
1829 for dir in $test_dirs; do
1830 if test -x $dir/as$build_exeext; then
1831 gcc_cv_as=$dir/as$build_exeext
1836 case $in_tree_gas in
1838 AC_MSG_RESULT("newly built gas")
1841 AC_MSG_RESULT($gcc_cv_as)
1845 # Identify the linker which will work hand-in-glove with the newly
1846 # built GCC, so that we can examine its features. This is the linker
1847 # which will be driven by the driver program.
1849 # If build != host, and we aren't building gas in-tree, we identify a
1850 # build->target linker and hope that it will have the same features
1851 # as the host->target linker we'll be using.
1852 AC_MSG_CHECKING(what linker to use)
1855 gcc_cv_gld_major_version=
1856 gcc_cv_gld_minor_version=
1857 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1858 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1859 if test -x "$DEFAULT_LINKER"; then
1860 gcc_cv_ld="$DEFAULT_LINKER"
1861 elif test -x collect-ld$build_exeext; then
1862 # Build using linker in the current directory.
1863 gcc_cv_ld=./collect-ld$build_exeext
1864 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1865 && test -f ../ld/Makefile \
1866 && test x$build = x$host; then
1867 # Single tree build which includes ld. We want to prefer it
1868 # over whatever linker top-level may have detected, since
1869 # we'll use what we're building after installation anyway.
1871 in_tree_ld_is_elf=no
1872 if (grep 'EMUL = .*elf' ../ld/Makefile \
1873 || grep 'EMUL = .*linux' ../ld/Makefile \
1874 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1875 in_tree_ld_is_elf=yes
1877 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
1880 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1882 if test x$gcc_cv_gld_version != x; then
1887 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1888 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1890 rm -f collect-ld$build_exeext
1891 $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1892 elif test -x "$LD_FOR_TARGET"; then
1893 gcc_cv_ld="$LD_FOR_TARGET"
1894 elif test -x "$LD" && test x$host = x$target; then
1898 if test "x$gcc_cv_ld" = x; then
1899 # Search the same directories that the installed compiler will
1900 # search. Else we may find the wrong linker and lose. If we
1901 # do not find a suitable linker binary, then try the user's
1904 # Also note we have to check MD_EXEC_PREFIX before checking the
1905 # user's path. Unfortunately, there is no good way to get at the
1906 # value of MD_EXEC_PREFIX here. So we do a brute force search
1907 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1908 # to be fixed as part of the make/configure rewrite too.
1910 if test "x$exec_prefix" = xNONE; then
1911 if test "x$prefix" = xNONE; then
1912 test_prefix=/usr/local
1917 test_prefix=$exec_prefix
1920 # If the loop below does not find an linker, then use whatever
1921 # one we can find in the users's path.
1923 if test "x$program_prefix" != xNONE; then
1924 gcc_cv_ld=${program_prefix}ld$build_exeext
1926 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1929 if test x$host = x$build; then
1930 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1931 $test_prefix/libexec/gcc/$target_noncanonical \
1932 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1933 /usr/lib/gcc/$target_noncanonical \
1934 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1935 $test_prefix/$target_noncanonical/bin"
1940 if test x$host = x$target; then
1941 test_dirs="$test_dirs \
1946 /bsd43/usr/lib/cmplrs/cc \
1947 /usr/cross64/usr/bin \
1948 /usr/lib/cmplrs/cc \
1949 /sysv/usr/lib/cmplrs/cc \
1950 /svr4/usr/lib/cmplrs/cc \
1954 for dir in $test_dirs; do
1955 if test -x $dir/ld$build_exeext; then
1956 gcc_cv_ld=$dir/ld$build_exeext
1963 AC_MSG_RESULT("newly built ld")
1966 AC_MSG_RESULT($gcc_cv_ld)
1970 # Figure out what nm we will be using.
1971 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1972 AC_MSG_CHECKING(what nm to use)
1974 if test -x nm$build_exeext; then
1975 gcc_cv_nm=./nm$build_exeext
1976 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1977 && test -f ../binutils/Makefile; then
1978 # Single tree build which includes binutils.
1980 gcc_cv_nm=./nm$build_exeext
1981 rm -f nm$build_exeext
1982 $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1983 elif test "x$program_prefix" != xNONE; then
1984 gcc_cv_nm=${program_prefix}nm$build_exeext
1986 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1989 yes) AC_MSG_RESULT("newly built nm") ;;
1990 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1993 # Figure out what objdump we will be using.
1994 AC_MSG_CHECKING(what objdump to use)
1996 if test -x objdump$build_exeext; then
1997 gcc_cv_objdump=./objdump$build_exeext
1998 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1999 && test -f ../binutils/Makefile; then
2000 # Single tree build which includes binutils.
2002 gcc_cv_objdump=./objdump$build_exeext
2003 rm -f objdump$build_exeext
2004 $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2005 elif test "x$program_prefix" != xNONE; then
2006 gcc_cv_objdump=${program_prefix}objdump$build_exeext
2008 gcc_cv_objdump=`echo objdump | \
2009 sed "${program_transform_name}"`$build_exeext
2011 case $in_tree_objdump in
2012 yes) AC_MSG_RESULT("newly built objdump") ;;
2013 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2016 # Figure out what assembler alignment features are present.
2017 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2021 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2022 [Define if your assembler supports .balign and .p2align.])])
2024 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2027 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2028 [Define if your assembler supports specifying the maximum number
2029 of bytes to skip when using the GAS .p2align command.])])
2031 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2033 [conftest_label1: .word 0
2035 conftest_label2: .word 0
2037 [if test x$gcc_cv_nm != x; then
2038 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2039 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2040 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2042 else gcc_cv_as_subsection_m1=yes
2044 rm -f conftest.nm1 conftest.nm2
2046 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2047 [Define if your assembler supports .subsection and .subsection -1 starts
2048 emitting at the beginning of your section.])])
2050 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2053 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2055 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2058 .NSUBSPA $CODE$,COMDAT],,
2059 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2061 # .hidden needs to be supported in both the assembler and the linker,
2062 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2063 # This is irritatingly difficult to feature test for; we have to check the
2064 # date string after the version number. If we've got an in-tree
2065 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2067 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2068 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2073 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2074 [if test $in_tree_ld = yes ; then
2076 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2077 && test $in_tree_ld_is_elf = yes; then
2078 gcc_cv_ld_hidden=yes
2081 gcc_cv_ld_hidden=yes
2082 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2083 if echo "$ld_ver" | grep GNU > /dev/null; then
2085 ld_vers=`echo $ld_ver | sed -n \
2086 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2087 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2088 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2089 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2090 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2091 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2092 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2093 if test 0"$ld_date" -lt 20020404; then
2094 if test -n "$ld_date"; then
2095 # If there was date string, but was earlier than 2002-04-04, fail
2097 elif test -z "$ld_vers"; then
2098 # If there was no date string nor ld version number, something is wrong
2101 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2102 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2103 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2104 test -z "$ld_vers_patch" && ld_vers_patch=0
2105 if test "$ld_vers_major" -lt 2; then
2107 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2108 gcc_cv_ld_hidden="no"
2109 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2117 hppa64*-*-hpux* | ia64*-*-hpux*)
2118 gcc_cv_ld_hidden=yes
2126 libgcc_visibility=no
2127 AC_SUBST(libgcc_visibility)
2128 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2129 libgcc_visibility=yes
2130 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2131 [Define if your assembler and linker support .hidden.])
2134 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2135 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2143 [# GAS versions before 2.11 do not support uleb128,
2144 # despite appearing to.
2145 # ??? There exists an elf-specific test that will crash
2146 # the assembler. Perhaps it's better to figure out whether
2147 # arbitrary sections are supported and try the test.
2148 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2149 if echo "$as_ver" | grep GNU > /dev/null; then
2151 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2152 as_major=`echo $as_ver | sed 's/\..*//'`
2153 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2155 if test $as_major -eq 2 && test $as_minor -lt 11
2157 else gcc_cv_as_leb128=yes
2160 [AC_DEFINE(HAVE_AS_LEB128, 1,
2161 [Define if your assembler supports .sleb128 and .uleb128.])])
2163 # GAS versions up to and including 2.11.0 may mis-optimize
2165 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2173 .section .eh_frame,"aw",@progbits
2175 .4byte .LECIE1-.LSCIE1
2189 .4byte .LEFDE1-.LASFDE1
2191 .4byte .LASFDE1-__FRAME_BEGIN__
2199 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2200 cat > conftest.lit <<EOF
2201 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2202 0010 01000000 12000000 18000000 00000000 ................
2203 0020 08000000 04080000 0044 .........D @&t@
2205 cat > conftest.big <<EOF
2206 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2207 0010 00000001 00000012 00000018 00000000 ................
2208 0020 00000008 04000000 0844 .........D @&t@
2210 # If the assembler didn't choke, and we can objdump,
2211 # and we got the correct data, then succeed.
2212 if test x$gcc_cv_objdump != x \
2213 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2214 | tail -3 > conftest.got \
2215 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2216 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2218 gcc_cv_as_eh_frame=yes
2219 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2220 gcc_cv_as_eh_frame=buggy
2222 # Uh oh, what do we do now?
2223 gcc_cv_as_eh_frame=no
2226 if test $gcc_cv_as_eh_frame = buggy; then
2227 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2228 [Define if your assembler mis-optimizes .eh_frame data.])
2231 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2232 [elf,2,12,0], [--fatal-warnings],
2233 [.section .rodata.str, "aMS", @progbits, 1])
2234 if test $gcc_cv_as_shf_merge = no; then
2235 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2236 [elf,2,12,0], [--fatal-warnings],
2237 [.section .rodata.str, "aMS", %progbits, 1])
2239 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2240 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2241 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2243 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2244 [elf,2,15,91], [--fatal-warnings],
2245 [.section .text,"axG",@progbits,.foo,comdat])
2246 if test $gcc_cv_as_comdat_group = yes; then
2247 gcc_cv_as_comdat_group_percent=no
2249 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2250 [elf,2,15,91], [--fatal-warnings],
2251 [.section .text,"axG",%progbits,.foo,comdat])
2253 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2254 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2255 [Define 0/1 if your assembler supports COMDAT group.])
2257 # Thread-local storage - the check is heavily parametrized.
2266 .section ".tdata","awT",@progbits
2269 ldq $27,__tls_get_addr($29) !literal!1
2270 lda $16,foo($29) !tlsgd!1
2271 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2272 ldq $27,__tls_get_addr($29) !literal!2
2273 lda $16,foo($29) !tlsldm!2
2274 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2275 ldq $1,foo($29) !gotdtprel
2276 ldah $2,foo($29) !dtprelhi
2277 lda $3,foo($2) !dtprello
2278 lda $4,foo($29) !dtprel
2279 ldq $1,foo($29) !gottprel
2280 ldah $2,foo($29) !tprelhi
2281 lda $3,foo($2) !tprello
2282 lda $4,foo($29) !tprel'
2285 tls_as_opt=--fatal-warnings
2289 .section ".tdata","awT",@progbits
2298 .section ".tdata","awT",@progbits
2302 leal foo@TLSGD(,%ebx,1), %eax
2303 leal foo@TLSLDM(%ebx), %eax
2304 leal foo@DTPOFF(%eax), %edx
2305 movl foo@GOTTPOFF(%ebx), %eax
2306 subl foo@GOTTPOFF(%ebx), %eax
2307 addl foo@GOTNTPOFF(%ebx), %eax
2308 movl foo@INDNTPOFF, %eax
2309 movl $foo@TPOFF, %eax
2310 subl $foo@TPOFF, %eax
2311 leal foo@NTPOFF(%ecx), %eax'
2314 tls_as_opt=--fatal-warnings
2318 .section ".tdata","awT",@progbits
2322 leaq foo@TLSGD(%rip), %rdi
2323 leaq foo@TLSLD(%rip), %rdi
2324 leaq foo@DTPOFF(%rax), %rdx
2325 movq foo@GOTTPOFF(%rip), %rax
2326 movq $foo@TPOFF, %rax'
2329 tls_as_opt=--fatal-warnings
2333 .section ".tdata","awT",@progbits
2336 addl r16 = @ltoff(@dtpmod(foo#)), gp
2337 addl r17 = @ltoff(@dtprel(foo#)), gp
2338 addl r18 = @ltoff(@tprel(foo#)), gp
2339 addl r19 = @dtprel(foo#), gp
2340 adds r21 = @dtprel(foo#), r13
2341 movl r23 = @dtprel(foo#)
2342 addl r20 = @tprel(foo#), gp
2343 adds r22 = @tprel(foo#), r13
2344 movl r24 = @tprel(foo#)'
2347 tls_as_opt=--fatal-warnings
2351 .section ".tdata","awT",@progbits
2359 addi 3,31,ld0@got@tlsgd
2361 addi 3,31,x1@got@tlsld
2364 addis 9,3,x2@dtprel@ha
2365 addi 9,9,x2@dtprel@l
2366 lwz 9,x3@got@tprel(31)
2369 addis 9,2,x2@tprel@ha
2370 addi 9,9,x2@tprel@l'
2373 tls_as_opt="-a32 --fatal-warnings"
2377 .section ".tdata","awT",@progbits
2385 addi 3,2,ld0@got@tlsgd
2391 addi 3,2,x1@got@tlsld
2397 addis 9,3,x2@dtprel@ha
2398 addi 9,9,x2@dtprel@l
2401 ld 9,x3@got@dtprel(2)
2407 tls_as_opt="-a64 --fatal-warnings"
2411 .section ".tdata","awT",@progbits
2420 l %r1,foo@GOTNTPOFF(%r12)
2421 l %r1,0(%r1):tls_load:foo
2422 bas %r14,0(%r1,%r13):tls_gdcall:foo
2423 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2426 tls_as_opt="-m31 --fatal-warnings"
2430 .section ".tdata","awT",@progbits
2438 lg %r1,foo@GOTNTPOFF(%r12)
2439 larl %r1,foo@INDNTPOFF
2440 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2441 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2444 tls_as_opt="-m64 -Aesame --fatal-warnings"
2446 sh-*-* | sh[34]-*-*)
2448 .section ".tdata","awT",@progbits
2458 tls_as_opt=--fatal-warnings
2462 sparc*-sun-solaris2.*)
2469 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2471 .section ".tdata",#alloc,#write,#tls
2474 sethi %tgd_hi22(foo), %o0
2475 add %o0, %tgd_lo10(foo), %o1
2476 add %l7, %o1, %o0, %tgd_add(foo)
2477 call __tls_get_addr, %tgd_call(foo)
2478 sethi %tldm_hi22(foo), %l1
2479 add %l1, %tldm_lo10(foo), %l2
2480 add %l7, %l2, %o0, %tldm_add(foo)
2481 call __tls_get_addr, %tldm_call(foo)
2482 sethi %tldo_hix22(foo), %l3
2483 xor %l3, %tldo_lox10(foo), %l4
2484 add %o0, %l4, %l5, %tldo_add(foo)
2485 sethi %tie_hi22(foo), %o3
2486 add %o3, %tie_lo10(foo), %o3
2487 ld [%l7 + %o3], %o2, %tie_ld(foo)
2488 add %g7, %o2, %o4, %tie_add(foo)
2489 sethi %tle_hix22(foo), %l1
2490 xor %l1, %tle_lox10(foo), %o5
2491 ld [%g7 + %o5], %o1'
2496 .section ".tdata","awT",@progbits
2499 sethi %tgd_hi22(foo), %o0
2500 add %o0, %tgd_lo10(foo), %o1
2501 add %l7, %o1, %o0, %tgd_add(foo)
2502 call __tls_get_addr, %tgd_call(foo)
2503 sethi %tldm_hi22(foo), %l1
2504 add %l1, %tldm_lo10(foo), %l2
2505 add %l7, %l2, %o0, %tldm_add(foo)
2506 call __tls_get_addr, %tldm_call(foo)
2507 sethi %tldo_hix22(foo), %l3
2508 xor %l3, %tldo_lox10(foo), %l4
2509 add %o0, %l4, %l5, %tldo_add(foo)
2510 sethi %tie_hi22(foo), %o3
2511 add %o3, %tie_lo10(foo), %o3
2512 ld [%l7 + %o3], %o2, %tie_ld(foo)
2513 add %g7, %o2, %o4, %tie_add(foo)
2514 sethi %tle_hix22(foo), %l1
2515 xor %l1, %tle_lox10(foo), %o5
2516 ld [%g7 + %o5], %o1'
2519 tls_as_opt="-32 --fatal-warnings"
2524 if test -z "$tls_first_major"; then
2525 : # If we don't have a check, assume no support.
2527 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2528 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2529 [AC_DEFINE(HAVE_AS_TLS, 1,
2530 [Define if your assembler supports thread-local storage.])])
2533 # Target-specific assembler checks.
2535 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2536 gcc_cv_ld_static_dynamic=no
2537 if test $in_tree_ld = yes ; then
2538 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2539 gcc_cv_ld_static_dynamic=yes
2541 elif test x$gcc_cv_ld != x; then
2542 # Check if linker supports -Bstatic/-Bdynamic option
2543 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2544 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2545 gcc_cv_ld_static_dynamic=yes
2548 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2549 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2550 [Define if your linker supports -Bstatic/-Bdynamic option.])
2552 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2554 if test x"$demangler_in_ld" = xyes; then
2555 AC_MSG_CHECKING(linker --demangle support)
2556 gcc_cv_ld_demangle=no
2557 if test $in_tree_ld = yes; then
2558 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2559 gcc_cv_ld_demangle=yes
2561 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2562 # Check if the GNU linker supports --demangle option
2563 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2564 gcc_cv_ld_demangle=yes
2567 if test x"$gcc_cv_ld_demangle" = xyes; then
2568 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2569 [Define if your linker supports --demangle option.])
2571 AC_MSG_RESULT($gcc_cv_ld_demangle)
2575 # All TARGET_ABI_OSF targets.
2576 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2577 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2578 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2581 extbl $3, $2, $3 !lituse_bytoff!1
2582 ldq $2, a($29) !literal!1
2583 ldq $4, b($29) !literal!2
2584 ldq_u $3, 0($2) !lituse_base!1
2585 ldq $27, f($29) !literal!5
2586 jsr $26, ($27), f !lituse_jsr!5
2587 ldah $29, 0($26) !gpdisp!3
2588 lda $0, c($29) !gprel
2589 ldah $1, d($29) !gprelhigh
2590 lda $1, d($1) !gprellow
2591 lda $29, 0($29) !gpdisp!3],,
2592 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2593 [Define if your assembler supports explicit relocations.])])
2597 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2598 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2599 [-no-mul-bug-abort], [.text],,
2600 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2601 [Define if your assembler supports the -no-mul-bug-abort option.])])
2605 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2606 [.register %g2, #scratch],,
2607 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2608 [Define if your assembler supports .register.])])
2610 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2612 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2613 [Define if your assembler supports -relax option.])])
2615 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2616 gcc_cv_as_sparc_ua_pcrel,,
2624 .uaword %r_disp32(foo)],
2625 [if test x$gcc_cv_ld != x \
2626 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2627 gcc_cv_as_sparc_ua_pcrel=yes
2630 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2631 [Define if your assembler and linker support unaligned PC relative relocs.])
2633 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2634 gcc_cv_as_sparc_ua_pcrel_hidden,,
2639 .uaword %r_disp32(foo)
2640 .byte 0x32, 0x33, 0x34
2645 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2646 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2647 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2648 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2649 if $gcc_cv_objdump -R conftest 2> /dev/null \
2650 | grep 'DISP32' > /dev/null 2>&1; then
2653 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2657 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2658 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2659 ]) # unaligned pcrel relocs
2661 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2662 gcc_cv_as_sparc_offsetable_lo10,,
2665 or %g1, %lo(ab) + 12, %g1
2666 or %g1, %lo(ab + 12), %g1],
2667 [if test x$gcc_cv_objdump != x \
2668 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2669 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2670 gcc_cv_as_sparc_offsetable_lo10=yes
2672 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2673 [Define if your assembler supports offsetable %lo().])])
2677 i[34567]86-*-* | x86_64-*-*)
2680 cygwin* | pe | mingw32*)
2681 # Used for DWARF 2 in PE
2682 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2683 gcc_cv_as_ix86_pe_secrel32,
2689 [if test x$gcc_cv_ld != x \
2690 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2691 gcc_cv_as_ix86_pe_secrel32=yes
2694 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2695 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2699 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2700 gcc_cv_as_ix86_filds_fists,
2701 [2,9,0],, [filds mem; fists mem],,
2702 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2703 [Define if your assembler uses the new HImode fild and fist notation.])])
2705 gcc_GAS_CHECK_FEATURE([cmov syntax],
2706 gcc_cv_as_ix86_cmov_sun_syntax,,,
2707 [cmovl.l %edx, %eax],,
2708 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2709 [Define if your assembler supports the Sun syntax for cmov.])])
2711 # This one is used unconditionally by i386.[ch]; it is to be defined
2712 # to 1 if the feature is present, 0 otherwise.
2713 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2714 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2720 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2721 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2722 [Define true if the assembler supports '.long foo@GOTOFF'.])
2726 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2727 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2729 addl r15 = @ltoffx(x#), gp
2731 ld8.mov r16 = [[r15]], x#],,
2732 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2733 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2739 *-*-aix*) conftest_s=' .csect .text[[PR]]
2742 gcc_GAS_CHECK_FEATURE([.machine directive support],
2743 gcc_cv_as_machine_directive,,,
2744 [ .machine ppc7400])
2745 if test x$gcc_cv_as_machine_directive != xyes; then
2746 echo "*** This target requires an assembler supporting \".machine\"" >&2
2747 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2748 test x$build = x$target && exit 1
2752 *) conftest_s=' .machine power4
2757 gcc_GAS_CHECK_FEATURE([mfcr field support],
2758 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2760 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2761 [Define if your assembler supports mfcr field.])])
2765 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2766 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2767 [ lw $4,%gp_rel(foo)($4)],,
2768 [if test x$target_cpu_default = x
2769 then target_cpu_default=MASK_EXPLICIT_RELOCS
2770 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2773 if test x$gas_flag = xyes \
2774 || test x"$host" != x"$build" \
2775 || test ! -x "$gcc_cv_as" \
2776 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2779 echo "*** This configuration requires the GNU assembler" >&2
2784 # ??? Not all targets support dwarf2 debug_line, even within a version
2785 # of gas. Moreover, we need to emit a valid instruction to trigger any
2786 # info to the output file. So, as supported targets are added to gas 2.11,
2787 # add some instruction here to (also) show we expect this might work.
2788 # ??? Once 2.11 is released, probably need to add first known working
2789 # version to the per-target configury.
2791 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2792 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2793 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2796 ia64*-*-* | s390*-*-*)
2803 if test x"$insn" != x; then
2805 .file 1 \"conftest.s\"
2808 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2809 gcc_cv_as_dwarf2_debug_line,
2810 [elf,2,11,0],, [$conftest_s],
2811 [if test x$gcc_cv_objdump != x \
2812 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2813 | grep debug_line > /dev/null 2>&1; then
2814 gcc_cv_as_dwarf2_debug_line=yes
2817 # The .debug_line file table must be in the exact order that
2818 # we specified the files, since these indices are also used
2819 # by DW_AT_decl_file. Approximate this test by testing if
2820 # the assembler bitches if the same index is assigned twice.
2821 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2822 gcc_cv_as_dwarf2_file_buggy,,,
2826 if test $gcc_cv_as_dwarf2_debug_line = yes \
2827 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2828 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2829 [Define if your assembler supports dwarf2 .file/.loc directives,
2830 and preserves file table indices exactly as given.])
2833 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2834 gcc_cv_as_gdwarf2_flag,
2835 [elf,2,11,0], [--gdwarf2], [$insn],,
2836 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2837 [Define if your assembler supports the --gdwarf2 option.])])
2839 gcc_GAS_CHECK_FEATURE([--gstabs option],
2840 gcc_cv_as_gstabs_flag,
2841 [elf,2,11,0], [--gstabs], [$insn],
2842 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2843 # and warns about it, but still exits successfully. So check for
2845 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2847 else gcc_cv_as_gstabs_flag=yes
2849 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2850 [Define if your assembler supports the --gstabs option.])])
2853 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2854 gcc_cv_ld_ro_rw_mix=unknown
2855 if test $in_tree_ld = yes ; then
2856 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2857 && test $in_tree_ld_is_elf = yes; then
2858 gcc_cv_ld_ro_rw_mix=read-write
2860 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2861 echo '.section myfoosect, "a"' > conftest1.s
2862 echo '.section myfoosect, "aw"' > conftest2.s
2863 echo '.byte 1' >> conftest2.s
2864 echo '.section myfoosect, "a"' > conftest3.s
2865 echo '.byte 0' >> conftest3.s
2866 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2867 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2868 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2869 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2870 conftest2.o conftest3.o > /dev/null 2>&1; then
2871 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2872 | sed -e '/myfoosect/!d' -e N`
2873 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2874 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2875 gcc_cv_ld_ro_rw_mix=read-only
2877 gcc_cv_ld_ro_rw_mix=read-write
2882 rm -f conftest.* conftest[123].*
2885 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2886 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2887 [Define if your linker links a mix of read-only
2888 and read-write sections into a read-write section.])
2890 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2892 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2893 gcc_cv_ld_eh_frame_hdr=no
2894 if test $in_tree_ld = yes ; then
2895 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2896 && test $in_tree_ld_is_elf = yes; then
2897 gcc_cv_ld_eh_frame_hdr=yes
2899 elif test x$gcc_cv_ld != x; then
2900 # Check if linker supports --eh-frame-hdr option
2901 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2902 gcc_cv_ld_eh_frame_hdr=yes
2905 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2906 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2907 [Define if your linker supports --eh-frame-hdr option.])
2909 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2911 AC_MSG_CHECKING(linker position independent executable support)
2913 if test $in_tree_ld = yes ; then
2914 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2915 && test $in_tree_ld_is_elf = yes; then
2918 elif test x$gcc_cv_ld != x; then
2919 # Check if linker supports -pie option
2920 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2924 if test x"$gcc_cv_ld_pie" = xyes; then
2925 AC_DEFINE(HAVE_LD_PIE, 1,
2926 [Define if your linker supports -pie option.])
2928 AC_MSG_RESULT($gcc_cv_ld_pie)
2934 AC_CACHE_CHECK(linker --as-needed support,
2935 gcc_cv_ld_as_needed,
2936 [gcc_cv_ld_as_needed=no
2937 if test $in_tree_ld = yes ; then
2938 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2939 && test $in_tree_ld_is_elf = yes; then
2940 gcc_cv_ld_as_needed=yes
2942 elif test x$gcc_cv_ld != x; then
2943 # Check if linker supports --as-needed and --no-as-needed options
2944 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2945 gcc_cv_ld_as_needed=yes
2949 if test x"$gcc_cv_ld_as_needed" = xyes; then
2950 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2951 [Define if your linker supports --as-needed and --no-as-needed options.])
2955 powerpc64*-*-linux*)
2956 AC_CACHE_CHECK(linker support for omitting dot symbols,
2957 gcc_cv_ld_no_dot_syms,
2958 [gcc_cv_ld_no_dot_syms=no
2959 if test $in_tree_ld = yes ; then
2960 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2961 gcc_cv_ld_no_dot_syms=yes
2963 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2964 cat > conftest1.s <<EOF
2968 cat > conftest2.s <<EOF
2969 .section ".opd","aw"
2974 .quad .LEfoo,.TOC.@tocbase,0
2980 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2981 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2982 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2983 gcc_cv_ld_no_dot_syms=yes
2985 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2988 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2989 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2990 [Define if your PowerPC64 linker only needs function descriptor syms.])
2995 if test x$with_sysroot = x && test x$host = x$target \
2996 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2997 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2998 [Define to PREFIX/include if cpp should also search that directory.])
3001 # Find out what GC implementation we want, or may, use.
3003 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3010 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3015 echo "Using $GGC for garbage collection."
3017 # Use the system's zlib library.
3019 zlibinc="-I\$(srcdir)/../zlib"
3020 AC_ARG_WITH(system-zlib,
3021 [ --with-system-zlib use installed libz],
3028 dnl Very limited version of automake's enable-maintainer-mode
3030 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3031 dnl maintainer-mode is disabled by default
3032 AC_ARG_ENABLE(maintainer-mode,
3033 [ --enable-maintainer-mode
3034 enable make rules and dependencies not useful
3035 (and sometimes confusing) to the casual installer],
3036 maintainer_mode=$enableval,
3039 AC_MSG_RESULT($maintainer_mode)
3041 if test "$maintainer_mode" = "yes"; then
3052 # Make empty files to contain the specs and options for each language.
3053 # Then add #include lines to for a compiler that has specs and/or options.
3058 for subdir in . $subdirs
3060 if test -f $srcdir/$subdir/lang.opt; then
3061 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3063 if test -f $srcdir/$subdir/lang-specs.h; then
3064 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3066 if test -f $srcdir/$subdir/$subdir-tree.def; then
3067 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3071 # These (without "all_") are set in each config-lang.in.
3072 # `language' must be a single word so is spelled singularly.
3077 all_outputs='Makefile gccbug mklibgcc libada-mk'
3078 # List of language makefile fragments.
3080 # List of language subdirectory makefiles. Deprecated.
3082 # Files for gengtype
3083 all_gtfiles="$target_gtfiles"
3084 # Files for gengtype with language
3085 all_gtfiles_files_langs=
3086 all_gtfiles_files_files=
3088 # Add the language fragments.
3089 # Languages are added via two mechanisms. Some information must be
3090 # recorded in makefile variables, these are defined in config-lang.in.
3091 # We accumulate them and plug them into the main Makefile.
3092 # The other mechanism is a set of hooks for each of the main targets
3093 # like `clean', `install', etc.
3095 language_hooks="Make-hooks"
3105 . ${srcdir}/$s/config-lang.in
3106 if test "x$language" = x
3108 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3111 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3112 if test -f ${srcdir}/$s/Makefile.in
3113 then all_lang_makefiles="$s/Makefile"
3115 all_languages="$all_languages $language"
3116 if test "x$boot_language" = xyes
3118 all_boot_languages="$all_boot_languages $language"
3120 all_compilers="$all_compilers $compilers"
3121 all_stagestuff="$all_stagestuff $stagestuff"
3122 all_outputs="$all_outputs $outputs"
3123 all_gtfiles="$all_gtfiles $gtfiles"
3126 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3127 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3131 # Pick up gtfiles for c
3134 . ${srcdir}/c-config-lang.in
3135 all_gtfiles="$all_gtfiles $gtfiles"
3138 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3139 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3143 for language in $all_languages
3145 check_languages="$check_languages check-$language"
3148 # We link each language in with a set of hooks, reached indirectly via
3153 target_list="all.build all.cross start.encap rest.encap tags \
3154 install-normal install-common install-man \
3155 uninstall info man srcextra srcman srcinfo \
3156 mostlyclean clean distclean maintainer-clean \
3157 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3158 for t in $target_list
3161 for lang in $all_languages
3165 echo "lang.$t: $x" >> Make-hooks
3174 echo "dir ." > .gdbinit
3175 echo "dir ${srcdir}" >> .gdbinit
3176 if test x$gdb_needs_out_file_path = xyes
3178 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3180 if test "x$subdirs" != x; then
3183 echo "dir ${srcdir}/$s" >> .gdbinit
3186 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3188 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3189 # absolute path for gcc_tooldir based on inserting the number of up-directory
3190 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3191 # $(libsubdir)/@(unlibsubdir) based path.
3192 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3193 # make and thus we'd get different behavior depending on where we built the
3195 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3196 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3198 changequote(<<, >>)dnl
3199 # An explanation of the sed strings:
3200 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3201 # -e 's|/$||' match a trailing forward slash and eliminates it
3202 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3203 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3205 # (*) Note this pattern overwrites the first character of the string
3206 # with a forward slash if one is not already present. This is not a
3207 # problem because the exact names of the sub-directories concerned is
3208 # unimportant, just the number of them matters.
3210 # The practical upshot of these patterns is like this:
3212 # prefix exec_prefix result
3213 # ------ ----------- ------
3215 # /foo/ /foo/bar ../
3216 # /foo /foo/bar/ ../
3217 # /foo/ /foo/bar/ ../
3218 # /foo /foo/bar/ugg ../../
3221 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3222 changequote([, ])dnl
3224 AC_SUBST(gcc_tooldir)
3227 # Find a directory in which to install a shared libgcc.
3229 AC_ARG_ENABLE(version-specific-runtime-libs,
3230 [ --enable-version-specific-runtime-libs
3231 specify that runtime libraries should be
3232 installed in a compiler-specific directory])
3234 AC_ARG_WITH(slibdir,
3235 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3236 slibdir="$with_slibdir",
3237 if test "${enable_version_specific_runtime_libs+set}" = set; then
3238 slibdir='$(libsubdir)'
3239 elif test "$host" != "$target"; then
3240 slibdir='$(build_tooldir)/lib'
3246 objdir=`${PWDCMD-pwd}`
3249 # Substitute configuration variables
3252 AC_SUBST(all_boot_languages)
3253 AC_SUBST(all_compilers)
3254 AC_SUBST(all_gtfiles)
3255 AC_SUBST(all_gtfiles_files_langs)
3256 AC_SUBST(all_gtfiles_files_files)
3257 AC_SUBST(all_lang_makefrags)
3258 AC_SUBST(all_lang_makefiles)
3259 AC_SUBST(all_languages)
3260 AC_SUBST(all_stagestuff)
3261 AC_SUBST(build_exeext)
3262 AC_SUBST(build_install_headers_dir)
3263 AC_SUBST(build_xm_file_list)
3264 AC_SUBST(build_xm_include_list)
3265 AC_SUBST(build_xm_defines)
3266 AC_SUBST(check_languages)
3267 AC_SUBST(cc_set_by_configure)
3268 AC_SUBST(quoted_cc_set_by_configure)
3269 AC_SUBST(cpp_install_dir)
3270 AC_SUBST(xmake_file)
3271 AC_SUBST(tmake_file)
3272 AC_SUBST(extra_gcc_objs)
3273 AC_SUBST(extra_headers_list)
3274 AC_SUBST(extra_objs)
3275 AC_SUBST(extra_parts)
3276 AC_SUBST(extra_passes)
3277 AC_SUBST(extra_programs)
3278 AC_SUBST(float_h_file)
3279 AC_SUBST(gcc_config_arguments)
3280 AC_SUBST(gcc_gxx_include_dir)
3281 AC_SUBST(libstdcxx_incdir)
3282 AC_SUBST(host_exeext)
3283 AC_SUBST(host_xm_file_list)
3284 AC_SUBST(host_xm_include_list)
3285 AC_SUBST(host_xm_defines)
3286 AC_SUBST(out_host_hook_obj)
3288 AC_SUBST(lang_opt_files)
3289 AC_SUBST(lang_specs_files)
3290 AC_SUBST(lang_tree_files)
3291 AC_SUBST(local_prefix)
3293 AC_SUBST(objc_boehm_gc)
3295 AC_SUBST(out_object_file)
3296 AC_SUBST(stage_prefix_set_by_configure)
3297 AC_SUBST(quoted_stage_prefix_set_by_configure)
3298 AC_SUBST(thread_file)
3299 AC_SUBST(tm_file_list)
3300 AC_SUBST(tm_include_list)
3301 AC_SUBST(tm_defines)
3302 AC_SUBST(tm_p_file_list)
3303 AC_SUBST(tm_p_include_list)
3304 AC_SUBST(xm_file_list)
3305 AC_SUBST(xm_include_list)
3306 AC_SUBST(xm_defines)
3307 AC_SUBST(c_target_objs)
3308 AC_SUBST(cxx_target_objs)
3309 AC_SUBST(target_cpu_default)
3311 AC_SUBST_FILE(language_hooks)
3313 TL_AC_GNU_MAKE_GCC_LIB_PATH
3316 if test x${build} = x${host} ; then
3317 if test x${host} = x${target} ; then
3318 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3320 echo "Links are now set up to build a cross-compiler" 1>&2
3321 echo " from ${host} to ${target}." 1>&2
3324 if test x${host} = x${target} ; then
3325 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3326 echo " for ${target}." 1>&2
3328 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3329 echo " from ${host} to ${target}." 1>&2
3333 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3334 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3336 # Configure the subdirectories
3337 # AC_CONFIG_SUBDIRS($subdirs)
3339 # Create the Makefile
3340 # and configure language subdirectories
3341 AC_CONFIG_FILES($all_outputs)
3343 AC_CONFIG_COMMANDS([default],
3345 case ${CONFIG_HEADERS} in
3346 *auto-host.h:config.in*)
3349 # Make sure all the subdirs exist.
3350 for d in $subdirs doc build
3352 test -d $d || mkdir $d
3354 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3355 # bootstrapping and the installation procedure can still use
3356 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3357 # FLAGS_TO_PASS has been modified to solve the problem there.
3358 # This is virtually a duplicate of what happens in configure.lang; we do
3359 # an extra check to make sure this only happens if ln -s can be used.
3362 for d in ${subdirs} ; do
3363 STARTDIR=`${PWDCMD-pwd}`
3365 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3368 $LN_S ../$t $t 2>/dev/null
3375 [subdirs='$subdirs'])