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, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='c++/$(version)'
140 changequote(<<, >>)dnl
141 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
146 AC_ARG_WITH(cpp_install_dir,
147 [ --with-cpp-install-dir=DIR
148 install the user visible C preprocessor in DIR
149 (relative to PREFIX) as well as PREFIX/bin],
150 [if test x$withval = xyes; then
151 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
152 elif test x$withval != xno; then
153 cpp_install_dir=$withval
156 # We would like to our source tree to be readonly. However when releases or
157 # pre-releases are generated, the flex/bison generated files as well as the
158 # various formats of manuals need to be included along with the rest of the
159 # sources. Therefore we have --enable-generated-files-in-srcdir to do
162 AC_MSG_CHECKING([whether to place generated files in the source directory])
163 dnl generated-files-in-srcdir is disabled by default
164 AC_ARG_ENABLE(generated-files-in-srcdir,
165 [ --enable-generated-files-in-srcdir
166 put copies of generated files in source dir
167 intended for creating source tarballs for users
168 without texinfo bison or flex.],
169 generated_files_in_srcdir=$enableval,
170 generated_files_in_srcdir=no)
172 AC_MSG_RESULT($generated_files_in_srcdir)
174 if test "$generated_files_in_srcdir" = "yes"; then
181 # -------------------
182 # Find default linker
183 # -------------------
187 [ --with-gnu-ld arrange to work with GNU ld.],
188 gnu_ld_flag="$with_gnu_ld",
191 # With pre-defined ld
193 [ --with-ld arrange to use the specified ld (full pathname)],
194 DEFAULT_LINKER="$with_ld")
195 if test x"${DEFAULT_LINKER+set}" = x"set"; then
196 if test ! -x "$DEFAULT_LINKER"; then
197 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
198 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
201 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
202 [Define to enable the use of a default linker.])
205 AC_MSG_CHECKING([whether a default linker was specified])
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test x"$gnu_ld_flag" = x"no"; then
208 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
210 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
216 # With demangler in GNU ld
217 AC_ARG_WITH(demangler-in-ld,
218 [ --with-demangler-in-ld try to use demangler in GNU ld.],
219 demangler_in_ld="$with_demangler_in_ld",
222 # ----------------------
223 # Find default assembler
224 # ----------------------
228 [ --with-gnu-as arrange to work with GNU as],
229 gas_flag="$with_gnu_as",
233 [ --with-as arrange to use the specified as (full pathname)],
234 DEFAULT_ASSEMBLER="$with_as")
235 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
236 if test ! -x "$DEFAULT_ASSEMBLER"; then
237 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
238 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
241 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
242 [Define to enable the use of a default assembler.])
245 AC_MSG_CHECKING([whether a default assembler was specified])
246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
247 if test x"$gas_flag" = x"no"; then
248 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
250 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
260 # If a non-executable a.out is present (e.g. created by GNU as above even if
261 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
262 # file, even when creating an executable, so an execution test fails.
263 # Remove possible default executable files to avoid this.
265 # FIXME: This really belongs into AC_PROG_CC and can be removed once
266 # Autoconf includes it.
267 rm -f a.out a.exe b.out
269 # Find the native compiler
272 # autoconf is lame and doesn't give us any substitution variable for this.
273 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
274 NO_MINUS_C_MINUS_O=yes
276 OUTPUT_OPTION='-o $@'
278 AC_SUBST(NO_MINUS_C_MINUS_O)
279 AC_SUBST(OUTPUT_OPTION)
281 # -------------------------
282 # Check C compiler features
283 # -------------------------
288 # sizeof(char) is 1 by definition.
289 AC_CHECK_SIZEOF(void *)
290 AC_CHECK_SIZEOF(short)
292 AC_CHECK_SIZEOF(long)
293 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
294 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
296 # ---------------------
297 # Warnings and checking
298 # ---------------------
300 # Check $CC warning features (if it's GCC).
301 # We want to use -pedantic, but we don't want warnings about
304 # So, we only use -pedantic if we can disable those warnings.
307 [whether ${CC} accepts -Wno-long-long],
308 [ac_cv_prog_cc_w_no_long_long],
309 [save_CFLAGS="$CFLAGS"
310 CFLAGS="-Wno-long-long"
311 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
312 [ac_cv_prog_cc_w_no_long_long=yes],
313 [ac_cv_prog_cc_w_no_long_long=no])
314 CFLAGS="$save_CFLAGS"
318 [whether ${CC} accepts -Wno-variadic-macros],
319 [ac_cv_prog_cc_w_no_variadic_macros],
320 [save_CFLAGS="$CFLAGS"
321 CFLAGS="-Wno-variadic-macros"
322 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
323 [ac_cv_prog_cc_w_no_variadic_macros=yes],
324 [ac_cv_prog_cc_w_no_variadic_macros=no])
325 CFLAGS="$save_CFLAGS"
329 if test $ac_cv_prog_cc_w_no_long_long = yes \
330 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
331 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
333 AC_SUBST(strict1_warn)
335 # Add -Wold-style-definition if it's accepted
337 [whether ${CC} accepts -Wold-style-definition],
338 [ac_cv_prog_cc_w_old_style_definition],
339 [save_CFLAGS="$CFLAGS"
340 CFLAGS="-Wold-style-definition"
341 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
342 [ac_cv_prog_cc_w_old_style_definition=yes],
343 [ac_cv_prog_cc_w_old_style_definition=no])
344 CFLAGS="$save_CFLAGS"
346 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
347 strict1_warn="${strict1_warn} -Wold-style-definition"
350 # Enable -Werror, period.
351 AC_ARG_ENABLE(werror_always,
352 [ --enable-werror-always enable -Werror always], [],
353 [enable_werror_always=no])
354 if test x${enable_werror_always} = xyes ; then
355 strict1_warn="${strict1_warn} -Werror"
359 # If the native compiler is GCC, we can enable warnings even in stage1.
360 # That's useful for people building cross-compilers, or just running a
363 if test "x$GCC" = "xyes"; then
364 warn_cflags='$(GCC_WARN_CFLAGS)'
366 AC_SUBST(warn_cflags)
368 # Enable -Werror in bootstrap stage2 and later.
370 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
373 AC_ARG_ENABLE(werror,
374 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
375 [if test x$is_release = x ; then
376 # Default to "yes" on development branches.
379 # Default to "no" on release branches.
382 if test x$enable_werror = xyes ; then
387 # Enable expensive internal checks
388 AC_ARG_ENABLE(checking,
389 [ --enable-checking[=LIST]
390 enable expensive run-time checks. With LIST,
391 enable only specific categories of checks.
392 Categories are: yes,no,all,none,release.
393 Flags are: assert,fold,gc,gcac,misc,
394 rtlflag,rtl,runtime,tree,valgrind.],
395 [ac_checking_flags="${enableval}"],[
396 # Determine the default checks.
397 if test x$is_release = x ; then
398 ac_checking_flags=yes
400 ac_checking_flags=release
406 ac_gc_always_collect=
409 ac_runtime_checking=1
411 ac_valgrind_checking=
412 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
413 for check in $ac_checking_flags
416 # these set all the flags to specific states
417 yes) ac_assert_checking=1 ; ac_checking=1 ;
418 ac_fold_checking= ; ac_gc_checking=1 ;
419 ac_gc_always_collect= ; ac_rtl_checking= ;
420 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
421 ac_tree_checking=1 ; ac_valgrind_checking= ;;
422 no|none) ac_assert_checking= ; ac_checking= ;
423 ac_fold_checking= ; ac_gc_checking= ;
424 ac_gc_always_collect= ; ac_rtl_checking= ;
425 ac_rtlflag_checking= ; ac_runtime_checking= ;
426 ac_tree_checking= ; ac_valgrind_checking= ;;
427 all) ac_assert_checking=1 ; ac_checking=1 ;
428 ac_fold_checking=1 ; ac_gc_checking=1 ;
429 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
430 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
431 ac_tree_checking=1 ; ac_valgrind_checking= ;;
432 release) ac_assert_checking=1 ; ac_checking= ;
433 ac_fold_checking= ; ac_gc_checking= ;
434 ac_gc_always_collect= ; ac_rtl_checking= ;
435 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
436 ac_tree_checking= ; ac_valgrind_checking= ;;
437 # these enable particular checks
438 assert) ac_assert_checking=1 ;;
439 fold) ac_fold_checking=1 ;;
440 gc) ac_gc_checking=1 ;;
441 gcac) ac_gc_always_collect=1 ;;
442 misc) ac_checking=1 ;;
443 rtl) ac_rtl_checking=1 ;;
444 rtlflag) ac_rtlflag_checking=1 ;;
445 runtime) ac_runtime_checking=1 ;;
446 tree) ac_tree_checking=1 ;;
447 valgrind) ac_valgrind_checking=1 ;;
448 *) AC_MSG_ERROR(unknown check category $check) ;;
454 if test x$ac_checking != x ; then
455 AC_DEFINE(ENABLE_CHECKING, 1,
456 [Define if you want more run-time sanity checks. This one gets a grab
457 bag of miscellaneous but relatively cheap checks.])
458 nocommon_flag=-fno-common
460 AC_SUBST(nocommon_flag)
461 if test x$ac_assert_checking != x ; then
462 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
463 [Define if you want assertions enabled. This is a cheap check.])
465 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
466 if test x$ac_runtime_checking != x ; then
467 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
468 [Define if you want runtime assertions enabled. This is a cheap check.])
470 if test x$ac_tree_checking != x ; then
471 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
472 [Define if you want all operations on trees (the basic data
473 structure of the front ends) to be checked for dynamic type safety
474 at runtime. This is moderately expensive. The tree browser debugging
475 routines will also be enabled by this option.
477 TREEBROWSER=tree-browser.o
479 AC_SUBST(TREEBROWSER)
480 if test x$ac_rtl_checking != x ; then
481 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
482 [Define if you want all operations on RTL (the basic data structure
483 of the optimizer and back end) to be checked for dynamic type safety
484 at runtime. This is quite expensive.])
486 if test x$ac_rtlflag_checking != x ; then
487 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
488 [Define if you want RTL flag accesses to be checked against the RTL
489 codes that are supported for each access macro. This is relatively
492 if test x$ac_gc_checking != x ; then
493 AC_DEFINE(ENABLE_GC_CHECKING, 1,
494 [Define if you want the garbage collector to do object poisoning and
495 other memory allocation checks. This is quite expensive.])
497 if test x$ac_gc_always_collect != x ; then
498 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
499 [Define if you want the garbage collector to operate in maximally
500 paranoid mode, validating the entire heap and collecting garbage at
501 every opportunity. This is extremely expensive.])
503 if test x$ac_fold_checking != x ; then
504 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
505 [Define if you want fold checked that it never destructs its argument.
506 This is quite expensive.])
508 valgrind_path_defines=
511 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
512 dnl # an if statement. This was the source of very frustrating bugs
513 dnl # in converting to autoconf 2.5x!
514 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
516 if test x$ac_valgrind_checking != x ; then
517 # It is certainly possible that there's valgrind but no valgrind.h.
518 # GCC relies on making annotations so we must have both.
519 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
520 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
521 [[#include <valgrind/memcheck.h>
522 #ifndef VALGRIND_DISCARD
523 #error VALGRIND_DISCARD not defined
525 [gcc_cv_header_valgrind_memcheck_h=yes],
526 [gcc_cv_header_valgrind_memcheck_h=no])
527 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
528 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
529 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
530 [[#include <memcheck.h>
531 #ifndef VALGRIND_DISCARD
532 #error VALGRIND_DISCARD not defined
534 [gcc_cv_header_memcheck_h=yes],
535 [gcc_cv_header_memcheck_h=no])
536 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
537 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
538 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
539 if test "x$valgrind_path" = "x" \
540 || (test $have_valgrind_h = no \
541 && test $gcc_cv_header_memcheck_h = no \
542 && test $gcc_cv_header_valgrind_memcheck_h = no); then
543 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
545 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
546 valgrind_command="$valgrind_path -q"
547 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
548 [Define if you want to run subprograms and generated programs
549 through valgrind (a memory checker). This is extremely expensive.])
550 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
551 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
552 [Define if valgrind's valgrind/memcheck.h header is installed.])
554 if test $gcc_cv_header_memcheck_h = yes; then
555 AC_DEFINE(HAVE_MEMCHECK_H, 1,
556 [Define if valgrind's memcheck.h header is installed.])
559 AC_SUBST(valgrind_path_defines)
560 AC_SUBST(valgrind_command)
562 AC_ARG_ENABLE(mapped-location,
563 [ --enable-mapped-location location_t is fileline integer cookie],,
564 enable_mapped_location=no)
566 if test "$enable_mapped_location" = yes ; then
567 AC_DEFINE(USE_MAPPED_LOCATION, 1,
568 [Define if location_t is fileline integer cookie.])
571 # Enable code coverage collection
572 AC_ARG_ENABLE(coverage,
573 [ --enable-coverage[=LEVEL]
574 enable compiler's code coverage collection.
575 Use to measure compiler performance and locate
576 unused parts of the compiler. With LEVEL, specify
577 optimization. Values are opt, noopt,
579 [case "${enableval}" in
581 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
584 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
587 # a.k.a. --disable-coverage
591 AC_MSG_ERROR(unknown coverage setting $enableval)
595 AC_SUBST(coverage_flags)
597 AC_ARG_ENABLE(gather-detailed-mem-stats,
598 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
599 [enable_gather_detailed_mem_stats=no])
600 if test x$enable_gather_detailed_mem_stats = xyes ; then
601 AC_DEFINE(GATHER_STATISTICS, 1,
602 [Define to enable detailed memory allocation stats gathering.])
605 # -------------------------------
606 # Miscenalleous configure options
607 # -------------------------------
611 [ --with-stabs arrange to use stabs instead of host debug format],
615 # Determine whether or not multilibs are enabled.
616 AC_ARG_ENABLE(multilib,
617 [ --enable-multilib enable library support for multiple ABIs],
618 [], [enable_multilib=yes])
619 AC_SUBST(enable_multilib)
621 # Enable __cxa_atexit for C++.
622 AC_ARG_ENABLE(__cxa_atexit,
623 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
627 # Pass with no value to take the default
628 # Pass with a value to specify a thread package
629 AC_ARG_ENABLE(threads,
630 [ --enable-threads enable thread usage for target GCC
631 --enable-threads=LIB use LIB thread package for target GCC],,
634 AC_ARG_ENABLE(objc-gc,
635 [ --enable-objc-gc enable the use of Boehm's garbage collector with
636 the GNU Objective-C runtime],
637 if test x$enable_objc_gc = xno; then
645 [ --with-dwarf2 force the default debug format to be DWARF 2],
646 dwarf2="$with_dwarf2",
649 AC_ARG_ENABLE(shared,
650 [ --disable-shared don't provide a shared libgcc],
652 case $enable_shared in
656 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
657 for pkg in $enableval; do
658 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
665 ], [enable_shared=yes])
666 AC_SUBST(enable_shared)
669 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
671 case ${with_sysroot} in
672 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
673 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
676 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
677 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
679 if test "x$exec_prefix" = xNONE; then
680 if test "x$prefix" = xNONE; then
681 test_prefix=/usr/local
686 test_prefix=$exec_prefix
688 case ${TARGET_SYSTEM_ROOT} in
689 "${test_prefix}"|"${test_prefix}/"*|\
690 '${exec_prefix}'|'${exec_prefix}/'*)
691 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
692 TARGET_SYSTEM_ROOT_DEFINE="$t"
697 TARGET_SYSTEM_ROOT_DEFINE=
698 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
700 AC_SUBST(TARGET_SYSTEM_ROOT)
701 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
702 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
704 # Build with intermodule optimisations
705 AC_ARG_ENABLE(intermodule,
706 [ --enable-intermodule build the compiler in one step],
707 [case ${enable_intermodule} in
708 yes) onestep="-onestep";;
714 # Sanity check enable_languages in case someone does not run the toplevel
715 # configure # script.
716 AC_ARG_ENABLE(languages,
717 [ --enable-languages=LIST specify which front-ends to build],
718 [case ,${enable_languages}, in
720 # go safe -- we cannot be much sure without the toplevel
722 # analysis of which target libs are present and usable
726 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
731 enable_languages=c,${enable_languages}
734 [enable_languages=c])
737 for lang in ${srcdir}/*/config-lang.in
740 # The odd quoting in the next line works around
741 # an apparent bug in bash 1.12 on linux.
743 ${srcdir}/[*]/config-lang.in) ;;
745 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
746 if test "x$lang_alias" = x
748 echo "$lang doesn't set \$language." 1>&2
751 case ",$enable_languages," in
753 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
761 # -------------------------
762 # Checks for other programs
763 # -------------------------
767 # Find some useful tools
769 # We need awk to create options.c and options.h.
770 # Bail out if it's missing.
772 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
780 # By default, the Darwin ranlib will not treat common symbols as
781 # definitions when building the archive table of contents. Other
782 # ranlibs do that; pass an option to the Darwin ranlib that makes
783 # it behave similarly.
789 AC_SUBST(ranlib_flags)
793 # See if cmp has --ignore-initial.
794 gcc_AC_PROG_CMP_IGNORE_INITIAL
796 # See if we have the mktemp command.
797 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
799 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
801 # See if makeinfo has been installed and is modern enough
802 # that we can use it.
803 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
804 [GNU texinfo.* \([0-9][0-9.]*\)],
806 if test $gcc_cv_prog_makeinfo_modern = no; then
807 MAKEINFO="$MISSING makeinfo"
809 *** Makeinfo is missing or too old.
810 *** Info documentation will not be built.])
817 # Is pod2man recent enough to regenerate manpages?
818 AC_MSG_CHECKING([for recent Pod::Man])
819 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
821 GENERATED_MANPAGES=generated-manpages
826 AC_SUBST(GENERATED_MANPAGES)
829 dnl Don't use AC_PROG_LEX; we insist on flex.
830 dnl LEXLIB is not useful in gcc.
831 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
834 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
836 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
837 # check for build == host before using them.
840 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
841 && test -d ../binutils ; then
842 NM='$(objdir)/../binutils/nm-new'
844 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
848 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
849 && test -d ../binutils ; then
850 AR='$(objdir)/../binutils/ar'
852 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
856 # --------------------
857 # Checks for C headers
858 # --------------------
860 AC_MSG_CHECKING(for GNU C library)
861 AC_CACHE_VAL(gcc_cv_glibc,
862 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
863 [[#include <features.h>]], [[
864 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
865 #error Not a GNU C library system
869 AC_MSG_RESULT($gcc_cv_glibc)
870 if test $gcc_cv_glibc = yes; then
871 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
874 # Need to reject headers which give warnings, so that the -Werror bootstrap
875 # works later. *sigh* This needs to come before all header checks.
882 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
883 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
884 sys/resource.h sys/param.h sys/times.h sys/stat.h \
885 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
887 # Check for thread headers.
888 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
889 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
891 # These tests can't be done till we know if we have limits.h.
899 # Stage specific cflags for build.
905 stage1_cflags="-Wa,-J"
911 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
912 # sources; use -no-cpp-precomp to get to GNU cpp.
913 # Apple's GCC has bugs in designated initializer handling, so disable
915 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
918 AC_SUBST(stage1_cflags)
920 # These libraries may be used by collect2.
921 # We may need a special search path to get them linked.
922 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
924 for libs in '' -lld -lmld \
925 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
926 '-L/usr/lib/cmplrs/cc3.11 -lmld'
929 AC_TRY_LINK_FUNC(ldopen,
930 [gcc_cv_collect2_libs="$libs"; break])
933 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
934 case $gcc_cv_collect2_libs in
936 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
938 AC_SUBST(COLLECT2_LIBS)
940 # When building Ada code on Alpha, we need exc_resume which is usually in
941 # -lexc. So test for it.
944 AC_SEARCH_LIBS(exc_resume, exc)
947 AC_SUBST(GNAT_LIBEXC)
949 # Some systems put ldexp and frexp in libm instead of libc; assume
950 # they're both in the same place. jcf-dump needs them.
953 AC_SEARCH_LIBS(ldexp, m)
958 # Use <inttypes.h> only if it exists,
959 # doesn't clash with <sys/types.h>, and declares intmax_t.
960 AC_MSG_CHECKING(for inttypes.h)
961 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
962 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
963 [[#include <sys/types.h>
964 #include <inttypes.h>]],
965 [[intmax_t i = -1;]])],
966 [gcc_cv_header_inttypes_h=yes],
967 [gcc_cv_header_inttypes_h=no])])
968 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
969 if test $gcc_cv_header_inttypes_h = yes; then
970 AC_DEFINE(HAVE_INTTYPES_H, 1,
971 [Define if you have a working <inttypes.h> header file.])
974 dnl Disabled until we have a complete test for buggy enum bitfields.
975 dnl gcc_AC_C_ENUM_BF_UNSIGNED
977 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
978 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
979 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
980 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
981 putchar_unlocked putc_unlocked)
982 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
983 sysconf strsignal getrusage nl_langinfo scandir alphasort \
984 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
987 if test x$ac_cv_func_mbstowcs = xyes; then
988 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
989 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
995 [gcc_cv_func_mbstowcs_works=yes],
996 [gcc_cv_func_mbstowcs_works=no],
997 [gcc_cv_func_mbstowcs_works=yes])])
998 if test x$gcc_cv_func_mbstowcs_works = xyes; then
999 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1000 [Define this macro if mbstowcs does not crash when its
1001 first argument is NULL.])
1005 AC_CHECK_TYPE(ssize_t, int)
1007 # Try to determine the array type of the second argument of getgroups
1008 # for the target system (int or gid_t).
1010 if test "${target}" = "${build}"; then
1011 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1014 # This condition may need some tweaking. It should include all
1015 # targets where the array type of the second argument of getgroups
1016 # is int and the type of gid_t is not equivalent to int.
1017 *-*-sunos* | *-*-ultrix*)
1018 TARGET_GETGROUPS_T=int
1021 TARGET_GETGROUPS_T=gid_t
1025 AC_SUBST(TARGET_GETGROUPS_T)
1027 gcc_AC_FUNC_PRINTF_PTR
1028 gcc_AC_FUNC_MMAP_BLACKLIST
1032 # Under VMS, vfork works very differently than on Unix. The standard test
1033 # won't work, and it isn't easily adaptable. It makes more sense to
1035 ac_cv_func_vfork_works=yes
1041 # Until we have in-tree GNU iconv:
1043 AC_SUBST(LIBICONV_DEP)
1049 # We will need to find libiberty.h and ansidecl.h
1050 saved_CFLAGS="$CFLAGS"
1051 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1052 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1053 strsignal strstr strverscmp \
1054 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1055 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1056 #include "ansidecl.h"
1057 #include "system.h"])
1059 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1060 #include "ansidecl.h"
1062 #ifdef HAVE_SYS_RESOURCE_H
1063 #include <sys/resource.h>
1067 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1068 #include "ansidecl.h"
1070 #ifdef HAVE_SYS_RESOURCE_H
1071 #include <sys/resource.h>
1073 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1074 [Define to \`long' if <sys/resource.h> doesn't define.])])
1076 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1077 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1078 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1079 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1080 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1081 #include "ansidecl.h"
1090 gcc_AC_CHECK_DECLS(times, , ,[
1091 #include "ansidecl.h"
1093 #ifdef HAVE_SYS_TIMES_H
1094 #include <sys/times.h>
1098 # More time-related stuff.
1099 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1100 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1101 #include "ansidecl.h"
1103 #ifdef HAVE_SYS_TIMES_H
1104 #include <sys/times.h>
1106 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1107 if test $ac_cv_struct_tms = yes; then
1108 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1109 [Define if <sys/times.h> defines struct tms.])
1112 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1113 # revisit after autoconf 2.50.
1114 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1115 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1116 #include "ansidecl.h"
1118 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1119 if test $gcc_cv_type_clock_t = yes; then
1120 AC_DEFINE(HAVE_CLOCK_T, 1,
1121 [Define if <time.h> defines clock_t.])
1124 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1125 CFLAGS="$saved_CFLAGS"
1127 gcc_AC_INITFINI_ARRAY
1129 # mkdir takes a single argument on some systems.
1130 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1138 # With Setjmp/Longjmp based exception handling.
1139 AC_ARG_ENABLE(sjlj-exceptions,
1140 [ --enable-sjlj-exceptions
1141 arrange to use setjmp/longjmp exception handling],
1142 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1143 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1144 [Define 0/1 to force the choice for exception handling model.])])
1146 # For platforms with the unwind ABI which includes an unwind library,
1147 # libunwind, we can choose to use the system libunwind.
1148 AC_ARG_WITH(system-libunwind,
1149 [ --with-system-libunwind use installed libunwind])
1151 # --------------------------------------------------------
1152 # Build, host, and target specific configuration fragments
1153 # --------------------------------------------------------
1155 # Collect build-machine-specific information.
1156 . ${srcdir}/config.build
1158 # Collect host-machine-specific information.
1159 . ${srcdir}/config.host
1163 # Collect target-machine-specific information.
1164 . ${srcdir}/config.gcc
1166 extra_objs="${host_extra_objs} ${extra_objs}"
1167 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1169 # Default the target-machine variables that were not explicitly set.
1170 if test x"$tm_file" = x
1171 then tm_file=$cpu_type/$cpu_type.h; fi
1173 if test x"$extra_headers" = x
1174 then extra_headers=; fi
1176 if test x$md_file = x
1177 then md_file=$cpu_type/$cpu_type.md; fi
1179 if test x$out_file = x
1180 then out_file=$cpu_type/$cpu_type.c; fi
1182 if test x"$tmake_file" = x
1183 then tmake_file=$cpu_type/t-$cpu_type
1186 if test x"$dwarf2" = xyes
1187 then tm_file="$tm_file tm-dwarf2.h"
1190 # Say what files are being used for the output code and MD file.
1191 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1192 echo "Using \`$srcdir/config/$md_file' as machine description file."
1194 # If any of the xm_file variables contain nonexistent files, warn
1195 # about them and drop them.
1198 for x in $build_xm_file; do
1199 if test -f $srcdir/config/$x
1201 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1207 for x in $host_xm_file; do
1208 if test -f $srcdir/config/$x
1210 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1216 for x in $xm_file; do
1217 if test -f $srcdir/config/$x
1219 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1225 for f in $tm_file; do
1228 if test $count = ax; then
1229 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1231 echo "Using the following target machine macro files:"
1232 for f in $tm_file; do
1233 echo " $srcdir/config/$f"
1237 if test x$need_64bit_hwint = xyes; then
1238 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1239 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1242 if test x$use_long_long_for_widest_fast_int = xyes; then
1243 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1244 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1245 efficiently supported by the host hardware.])
1249 for f in $host_xm_file; do
1252 if test $count = a; then
1254 elif test $count = ax; then
1255 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1257 echo "Using the following host machine macro files:"
1258 for f in $host_xm_file; do
1259 echo " $srcdir/config/$f"
1262 echo "Using ${out_host_hook_obj} for host machine hooks."
1264 if test "$host_xm_file" != "$build_xm_file"; then
1266 for f in $build_xm_file; do
1269 if test $count = a; then
1271 elif test $count = ax; then
1272 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1274 echo "Using the following build machine macro files:"
1275 for f in $build_xm_file; do
1276 echo " $srcdir/config/$f"
1285 # Check if a valid thread package
1286 case ${enable_threads} in
1289 target_thread_file='single'
1293 target_thread_file='single'
1295 aix | dce | gnat | irix | posix | posix95 | rtems | \
1296 single | solaris | vxworks | win32 )
1297 target_thread_file=${enable_threads}
1300 echo "${enable_threads} is an unknown thread package" 1>&2
1305 if test x${thread_file} = x; then
1306 # No thread file set by target-specific clauses in config.gcc,
1307 # so use file chosen by default logic above
1308 thread_file=${target_thread_file}
1311 # Make gthr-default.h if we have a thread file.
1313 if test $thread_file != single; then
1314 rm -f gthr-default.h
1315 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1316 gthread_flags=-DHAVE_GTHR_DEFAULT
1318 AC_SUBST(gthread_flags)
1325 if test x$enable___cxa_atexit = xyes || \
1326 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1327 if test x$host = x$target; then
1328 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1329 [echo "__cxa_atexit can't be enabled on this target"])
1331 # We can't check for __cxa_atexit when building a cross, so assume
1335 if test x$use_cxa_atexit = xyes; then
1336 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1337 [Define if you want to use __cxa_atexit, rather than atexit, to
1338 register C++ destructors for local statics and global objects.
1339 This is essential for fully standards-compliant handling of
1340 destructors, but requires __cxa_atexit in libc.])
1344 # Look for a file containing extra machine modes.
1345 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1346 extra_modes_file='$(srcdir)'/config/${extra_modes}
1347 AC_SUBST(extra_modes_file)
1348 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1349 [Define to the name of a file containing a list of extra machine modes
1350 for this architecture.])
1353 # Convert extra_options into a form suitable for Makefile use.
1355 for f in $extra_options; do
1356 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1358 AC_SUBST(extra_opt_files)
1360 # auto-host.h is the file containing items generated by autoconf and is
1361 # the first file included by config.h.
1362 # If host=build, it is correct to have bconfig include auto-host.h
1363 # as well. If host!=build, we are in error and need to do more
1364 # work to find out the build config parameters.
1365 if test x$host = x$build
1367 build_auto=auto-host.h
1369 # We create a subdir, then run autoconf in the subdir.
1370 # To prevent recursion we set host and build for the new
1371 # invocation of configure to the build for this invocation
1378 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1379 *) realsrcdir=../${srcdir};;
1381 saved_CFLAGS="${CFLAGS}"
1382 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1383 ${realsrcdir}/configure \
1384 --enable-languages=${enable_languages-all} \
1385 --target=$target_alias --host=$build_alias --build=$build_alias
1386 CFLAGS="${saved_CFLAGS}"
1388 # We just finished tests for the build machine, so rename
1389 # the file auto-build.h in the gcc directory.
1390 mv auto-host.h ../auto-build.h
1393 build_auto=auto-build.h
1395 AC_SUBST(build_subdir)
1397 tm_file="${tm_file} defaults.h"
1398 tm_p_file="${tm_p_file} tm-preds.h"
1399 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1400 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1401 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1402 # put this back in temporarily.
1403 xm_file="auto-host.h ansidecl.h ${xm_file}"
1410 # Compile in configure arguments.
1411 if test -f configargs.h ; then
1412 # Being re-configured.
1413 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1414 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1416 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1419 # Double all backslashes and backslash all quotes to turn
1420 # gcc_config_arguments into a C string.
1421 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1422 $gcc_config_arguments
1424 gcc_config_arguments_str=`cat conftest.out`
1427 cat > configargs.h <<EOF
1428 /* Generated automatically. */
1429 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1430 static const char thread_model[] = "$thread_file";
1432 static const struct {
1433 const char *name, *value;
1434 } configure_default_options[] = $configure_default_options;
1438 # Internationalization
1439 ZW_GNU_GETTEXT_SISTER_DIR
1441 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1442 # -liconv on the link line twice.
1443 case "$LIBINTL" in *$LIBICONV*)
1447 AC_ARG_ENABLE(secureplt,
1448 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1451 # Windows32 Registry support for specifying GCC installation paths.
1452 AC_ARG_ENABLE(win32-registry,
1453 [ --disable-win32-registry
1454 disable lookup of installation paths in the
1455 Registry on Windows hosts
1456 --enable-win32-registry enable registry lookup (default)
1457 --enable-win32-registry=KEY
1458 use KEY instead of GCC version as the last portion
1459 of the registry key],,)
1462 win32 | pe | cygwin* | mingw32* | uwin*)
1463 if test "x$enable_win32_registry" != xno; then
1464 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1467 if test "x$enable_win32_registry" != xno; then
1468 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1469 [Define to 1 if installation paths should be looked up in the Windows
1470 Registry. Ignored on non-Windows hosts.])
1472 if test "x$enable_win32_registry" != xyes \
1473 && test "x$enable_win32_registry" != x; then
1474 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1475 [Define to be the last component of the Windows registry key under which
1476 to look for installation paths. The full key used will be
1477 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1478 The default is the GCC version number.])
1484 # Get an absolute path to the GCC top-level source directory
1485 holddir=`${PWDCMD-pwd}`
1487 topdir=`${PWDCMD-pwd}`
1490 # Conditionalize the makefile for this host machine.
1492 for f in ${host_xmake_file}
1494 if test -f ${srcdir}/config/$f
1496 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1500 # Conditionalize the makefile for this target machine.
1502 for f in ${tmake_file}
1504 if test -f ${srcdir}/config/$f
1506 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1509 tmake_file="${tmake_file_}"
1511 # If the host doesn't support symlinks, modify CC in
1512 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1513 # Otherwise, we can use "CC=$(CC)".
1517 cc_set_by_configure="\$(CC)"
1518 quoted_cc_set_by_configure="\$(CC)"
1519 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1520 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1523 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1524 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1525 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1526 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1530 # This is a terrible hack which will go away some day.
1531 host_cc_for_libada=${CC}
1532 AC_SUBST(host_cc_for_libada)
1534 out_object_file=`basename $out_file .c`.o
1536 tm_file_list="options.h"
1537 tm_include_list="options.h"
1538 for f in $tm_file; do
1541 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1542 tm_include_list="${tm_include_list} $f"
1545 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1546 tm_include_list="${tm_include_list} config/$f"
1553 for f in $tm_p_file; do
1556 tm_p_file_list="${tm_p_file_list} $f"
1557 tm_p_include_list="${tm_p_include_list} $f"
1560 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1561 tm_p_include_list="${tm_p_include_list} config/$f"
1567 for f in $xm_file; do
1570 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1571 xm_include_list="${xm_include_list} $f"
1574 xm_file_list="${xm_file_list} $f"
1575 xm_include_list="${xm_include_list} $f"
1578 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1579 xm_include_list="${xm_include_list} config/$f"
1585 host_xm_include_list=
1586 for f in $host_xm_file; do
1589 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1590 host_xm_include_list="${host_xm_include_list} $f"
1593 host_xm_file_list="${host_xm_file_list} $f"
1594 host_xm_include_list="${host_xm_include_list} $f"
1597 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1598 host_xm_include_list="${host_xm_include_list} config/$f"
1604 for f in $build_xm_file; do
1607 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1608 build_xm_include_list="${build_xm_include_list} $f"
1610 auto-build.h | auto-host.h )
1611 build_xm_file_list="${build_xm_file_list} $f"
1612 build_xm_include_list="${build_xm_include_list} $f"
1615 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1616 build_xm_include_list="${build_xm_include_list} config/$f"
1621 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1622 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1623 CROSS= AC_SUBST(CROSS)
1624 ALL=all.internal AC_SUBST(ALL)
1625 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1626 if test x$host != x$target
1628 CROSS="-DCROSS_COMPILE"
1630 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1631 case "$host","$target" in
1632 # Darwin crosses can use the host system's libraries and headers,
1633 # because of the fat library support. Of course, it must be the
1634 # same version of Darwin on both sides. Allow the user to
1635 # just say --target=foo-darwin without a version number to mean
1636 # "the version on this system".
1637 *-*-darwin*,*-*-darwin*)
1638 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1639 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1640 if test $hostos = $targetos -o $targetos = darwin ; then
1642 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1647 i?86-*-*,x86_64-*-* \
1648 | powerpc*-*-*,powerpc64*-*-*)
1649 CROSS="$CROSS -DNATIVE_CROSS" ;;
1651 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1652 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1653 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1656 # If this is a cross-compiler that does not
1657 # have its own set of headers then define
1660 # If this is using newlib, without having the headers available now,
1661 # then define inhibit_libc in LIBGCC2_CFLAGS.
1662 # This prevents libgcc2 from containing any code which requires libc
1665 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1666 test x$with_newlib = xyes ; } &&
1667 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1668 inhibit_libc=-Dinhibit_libc
1670 AC_SUBST(inhibit_libc)
1672 # When building gcc with a cross-compiler, we need to adjust things so
1673 # that the generator programs are still built with the native compiler.
1674 # Also, we cannot run fixincludes or fix-header.
1676 # These are the normal (build=host) settings:
1677 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1678 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1679 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1681 # Possibly disable fixproto, on a per-target basis.
1682 case ${use_fixproto} in
1687 STMP_FIXPROTO=stmp-fixproto
1690 AC_SUBST(STMP_FIXPROTO)
1692 # And these apply if build != host, or we are generating coverage data
1693 if test x$build != x$host || test "x$coverage_flags" != x
1695 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1697 if test "x$TARGET_SYSTEM_ROOT" = x; then
1698 if test "x$STMP_FIXPROTO" != x; then
1699 STMP_FIXPROTO=stmp-install-fixproto
1704 # Expand extra_headers to include complete path.
1705 # This substitutes for lots of t-* files.
1707 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1708 for file in ${extra_headers} ; do
1709 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1712 # Define collect2 in Makefile.
1713 case $host_can_use_collect2 in
1715 *) collect2='collect2$(exeext)' ;;
1717 AC_SUBST([collect2])
1719 # Add a definition of USE_COLLECT2 if system wants one.
1720 case $use_collect2 in
1721 no) use_collect2= ;;
1724 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1725 xm_defines="${xm_defines} USE_COLLECT2"
1726 case $host_can_use_collect2 in
1728 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1734 # ---------------------------
1735 # Assembler & linker features
1736 # ---------------------------
1738 # Identify the assembler which will work hand-in-glove with the newly
1739 # built GCC, so that we can examine its features. This is the assembler
1740 # which will be driven by the driver program.
1742 # If build != host, and we aren't building gas in-tree, we identify a
1743 # build->target assembler and hope that it will have the same features
1744 # as the host->target assembler we'll be using.
1747 gcc_cv_gas_major_version=
1748 gcc_cv_gas_minor_version=
1749 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1750 if test -x "$DEFAULT_ASSEMBLER"; then
1751 gcc_cv_as="$DEFAULT_ASSEMBLER"
1752 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1753 && test -f ../gas/Makefile \
1754 && test x$build = x$host; then
1755 # Single tree build which includes gas. We want to prefer it
1756 # over whatever linker top-level may have detected, since
1757 # we'll use what we're building after installation anyway.
1759 _gcc_COMPUTE_GAS_VERSION
1760 gcc_cv_as=../gas/as-new$build_exeext
1761 in_tree_gas_is_elf=no
1762 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1763 || (grep 'obj_format = multi' ../gas/Makefile \
1764 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1766 in_tree_gas_is_elf=yes
1768 m4_pattern_allow([AS_FOR_TARGET])dnl
1769 elif test -x as$build_exeext; then
1770 # Build using assembler in the current directory.
1771 gcc_cv_as=./as$build_exeext
1772 elif test -x "$AS_FOR_TARGET"; then
1773 gcc_cv_as="$AS_FOR_TARGET"
1774 elif test -x "$AS" && test x$host = x$target; then
1778 gcc_AC_CHECK_TOOL(gcc_cv_as, as, ORIGINAL_AS_FOR_TARGET)
1779 AC_MSG_CHECKING(what assembler to use)
1780 case $in_tree_gas in
1782 AC_MSG_RESULT("newly built gas")
1785 AC_MSG_RESULT($gcc_cv_as)
1789 # Identify the linker which will work hand-in-glove with the newly
1790 # built GCC, so that we can examine its features. This is the linker
1791 # which will be driven by the driver program.
1793 # If build != host, and we aren't building gas in-tree, we identify a
1794 # build->target linker and hope that it will have the same features
1795 # as the host->target linker we'll be using.
1798 gcc_cv_gld_major_version=
1799 gcc_cv_gld_minor_version=
1800 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1801 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1802 if test -x "$DEFAULT_LINKER"; then
1803 gcc_cv_ld="$DEFAULT_LINKER"
1804 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1805 && test -f ../ld/Makefile \
1806 && test x$build = x$host; then
1807 # Single tree build which includes ld. We want to prefer it
1808 # over whatever linker top-level may have detected, since
1809 # we'll use what we're building after installation anyway.
1811 in_tree_ld_is_elf=no
1812 if (grep 'EMUL = .*elf' ../ld/Makefile \
1813 || grep 'EMUL = .*linux' ../ld/Makefile \
1814 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1815 in_tree_ld_is_elf=yes
1817 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
1820 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1822 if test x$gcc_cv_gld_version != x; then
1827 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1828 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1830 gcc_cv_ld=../ld/ld-new$build_exeext
1831 elif test -x collect-ld$build_exeext; then
1832 # Build using linker in the current directory.
1833 gcc_cv_ld=./collect-ld$build_exeext
1834 elif test -x "$LD_FOR_TARGET"; then
1835 gcc_cv_ld="$LD_FOR_TARGET"
1836 elif test -x "$LD" && test x$host = x$target; then
1840 gcc_AC_CHECK_TOOL(gcc_cv_ld, ld, ORIGINAL_LD_FOR_TARGET)
1841 AC_MSG_CHECKING(what linker to use)
1844 AC_MSG_RESULT("newly built ld")
1847 AC_MSG_RESULT($gcc_cv_ld)
1851 # Figure out what nm we will be using.
1852 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1855 if test -f $gcc_cv_binutils_srcdir/configure.in \
1856 && test -f ../binutils/Makefile; then
1857 # Single tree build which includes binutils.
1859 gcc_cv_nm=../binutils/nm-new$build_exeext
1860 elif test -x nm$build_exeext; then
1861 gcc_cv_nm=./nm$build_exeext
1864 gcc_AC_CHECK_TOOL(gcc_cv_nm, nm, ORIGINAL_NM_FOR_TARGET)
1865 AC_MSG_CHECKING(what nm to use)
1867 yes) AC_MSG_RESULT("newly built nm") ;;
1868 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1871 # Figure out what objdump we will be using.
1872 AC_MSG_CHECKING(what objdump to use)
1874 if test -x objdump$build_exeext; then
1875 gcc_cv_objdump=./objdump$build_exeext
1876 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1877 && test -f ../binutils/Makefile; then
1878 # Single tree build which includes binutils.
1880 gcc_cv_objdump=../binutils/objdump$build_exeext
1881 elif test "x$program_prefix" != xNONE; then
1882 gcc_cv_objdump=${program_prefix}objdump$build_exeext
1883 elif test x$build != x$host && test x$build != x$target; then
1884 gcc_cv_objdump=${target_noncanonical}-objdump$build_exeext
1886 gcc_cv_objdump=`echo objdump | \
1887 sed "${program_transform_name}"`$build_exeext
1889 case $in_tree_objdump in
1890 yes) AC_MSG_RESULT("newly built objdump") ;;
1891 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
1894 # Figure out what assembler alignment features are present.
1895 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1899 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1900 [Define if your assembler supports .balign and .p2align.])])
1902 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1905 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1906 [Define if your assembler supports specifying the maximum number
1907 of bytes to skip when using the GAS .p2align command.])])
1909 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
1911 [conftest_label1: .word 0
1913 conftest_label2: .word 0
1915 [if test x$gcc_cv_nm != x; then
1916 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1917 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1918 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
1920 else gcc_cv_as_subsection_m1=yes
1922 rm -f conftest.nm1 conftest.nm2
1924 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1925 [Define if your assembler supports .subsection and .subsection -1 starts
1926 emitting at the beginning of your section.])])
1928 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
1931 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
1933 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
1936 .NSUBSPA $CODE$,COMDAT],,
1937 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
1939 # .hidden needs to be supported in both the assembler and the linker,
1940 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
1941 # This is irritatingly difficult to feature test for; we have to check the
1942 # date string after the version number. If we've got an in-tree
1943 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
1945 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
1946 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
1951 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
1952 [if test $in_tree_ld = yes ; then
1954 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
1955 && test $in_tree_ld_is_elf = yes; then
1956 gcc_cv_ld_hidden=yes
1959 gcc_cv_ld_hidden=yes
1960 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
1961 if echo "$ld_ver" | grep GNU > /dev/null; then
1963 ld_vers=`echo $ld_ver | sed -n \
1964 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1965 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1966 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1967 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1968 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1969 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1970 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
1971 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
1972 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
1973 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
1974 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
1975 if test 0"$ld_date" -lt 20020404; then
1976 if test -n "$ld_date"; then
1977 # If there was date string, but was earlier than 2002-04-04, fail
1979 elif test -z "$ld_vers"; then
1980 # If there was no date string nor ld version number, something is wrong
1983 test -z "$ld_vers_patch" && ld_vers_patch=0
1984 if test "$ld_vers_major" -lt 2; then
1986 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
1987 gcc_cv_ld_hidden="no"
1988 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
1996 hppa64*-*-hpux* | ia64*-*-hpux*)
1997 gcc_cv_ld_hidden=yes
2005 libgcc_visibility=no
2006 AC_SUBST(libgcc_visibility)
2007 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2008 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2009 libgcc_visibility=yes
2010 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2011 [Define if your assembler and linker support .hidden.])
2014 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2015 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2023 [# GAS versions before 2.11 do not support uleb128,
2024 # despite appearing to.
2025 # ??? There exists an elf-specific test that will crash
2026 # the assembler. Perhaps it's better to figure out whether
2027 # arbitrary sections are supported and try the test.
2028 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2029 if echo "$as_ver" | grep GNU > /dev/null; then
2031 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2032 as_major=`echo $as_ver | sed 's/\..*//'`
2033 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2035 if test $as_major -eq 2 && test $as_minor -lt 11
2037 else gcc_cv_as_leb128=yes
2040 [AC_DEFINE(HAVE_AS_LEB128, 1,
2041 [Define if your assembler supports .sleb128 and .uleb128.])])
2043 # GAS versions up to and including 2.11.0 may mis-optimize
2045 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2053 .section .eh_frame,"aw",@progbits
2055 .4byte .LECIE1-.LSCIE1
2069 .4byte .LEFDE1-.LASFDE1
2071 .4byte .LASFDE1-__FRAME_BEGIN__
2079 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2080 cat > conftest.lit <<EOF
2081 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2082 0010 01000000 12000000 18000000 00000000 ................
2083 0020 08000000 04080000 0044 .........D @&t@
2085 cat > conftest.big <<EOF
2086 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2087 0010 00000001 00000012 00000018 00000000 ................
2088 0020 00000008 04000000 0844 .........D @&t@
2090 # If the assembler didn't choke, and we can objdump,
2091 # and we got the correct data, then succeed.
2092 if test x$gcc_cv_objdump != x \
2093 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2094 | tail -3 > conftest.got \
2095 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2096 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2098 gcc_cv_as_eh_frame=yes
2099 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2100 gcc_cv_as_eh_frame=buggy
2102 # Uh oh, what do we do now?
2103 gcc_cv_as_eh_frame=no
2106 if test $gcc_cv_as_eh_frame = buggy; then
2107 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2108 [Define if your assembler mis-optimizes .eh_frame data.])
2111 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2112 [elf,2,12,0], [--fatal-warnings],
2113 [.section .rodata.str, "aMS", @progbits, 1])
2114 if test $gcc_cv_as_shf_merge = no; then
2115 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2116 [elf,2,12,0], [--fatal-warnings],
2117 [.section .rodata.str, "aMS", %progbits, 1])
2119 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2120 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2121 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2123 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2124 [elf,2,16,0], [--fatal-warnings],
2125 [.section .text,"axG",@progbits,.foo,comdat])
2126 if test $gcc_cv_as_comdat_group = yes; then
2127 gcc_cv_as_comdat_group_percent=no
2129 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2130 [elf,2,16,0], [--fatal-warnings],
2131 [.section .text,"axG",%progbits,.foo,comdat])
2133 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2135 if test 0"$ld_date" -lt 20050308; then
2136 if test -n "$ld_date"; then
2137 # If there was date string, but was earlier than 2005-03-08, fail
2139 elif test "$ld_vers_major" -lt 2; then
2141 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2145 if test $comdat_group = no; then
2146 gcc_cv_as_comdat_group=no
2147 gcc_cv_as_comdat_group_percent=no
2150 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2151 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2152 [Define 0/1 if your assembler and linker support COMDAT groups.])
2154 # Thread-local storage - the check is heavily parametrized.
2163 .section ".tdata","awT",@progbits
2166 ldq $27,__tls_get_addr($29) !literal!1
2167 lda $16,foo($29) !tlsgd!1
2168 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2169 ldq $27,__tls_get_addr($29) !literal!2
2170 lda $16,foo($29) !tlsldm!2
2171 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2172 ldq $1,foo($29) !gotdtprel
2173 ldah $2,foo($29) !dtprelhi
2174 lda $3,foo($2) !dtprello
2175 lda $4,foo($29) !dtprel
2176 ldq $1,foo($29) !gottprel
2177 ldah $2,foo($29) !tprelhi
2178 lda $3,foo($2) !tprello
2179 lda $4,foo($29) !tprel'
2182 tls_as_opt=--fatal-warnings
2186 .section ".tdata","awT",@progbits
2198 .section ".tdata","awT",@progbits
2202 addil LT%foo-$tls_gdidx$,gp
2203 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2206 addil LT%foo-$tls_ldidx$,gp
2208 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2209 addil LR%foo-$tls_dtpoff$,%ret0
2210 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2212 addil LT%foo-$tls_ieoff$,gp
2213 ldw RT%foo-$tls_ieoff$(%r1),%t2
2216 addil LR%foo-$tls_leoff$,%t1
2217 ldo RR%foo-$tls_leoff$(%r1),%t2'
2220 tls_as_opt=--fatal-warnings
2224 .section ".tdata","awT",@progbits
2228 leal foo@TLSGD(,%ebx,1), %eax
2229 leal foo@TLSLDM(%ebx), %eax
2230 leal foo@DTPOFF(%eax), %edx
2231 movl foo@GOTTPOFF(%ebx), %eax
2232 subl foo@GOTTPOFF(%ebx), %eax
2233 addl foo@GOTNTPOFF(%ebx), %eax
2234 movl foo@INDNTPOFF, %eax
2235 movl $foo@TPOFF, %eax
2236 subl $foo@TPOFF, %eax
2237 leal foo@NTPOFF(%ecx), %eax'
2240 tls_as_opt=--fatal-warnings
2244 .section ".tdata","awT",@progbits
2248 leaq foo@TLSGD(%rip), %rdi
2249 leaq foo@TLSLD(%rip), %rdi
2250 leaq foo@DTPOFF(%rax), %rdx
2251 movq foo@GOTTPOFF(%rip), %rax
2252 movq $foo@TPOFF, %rax'
2255 tls_as_opt=--fatal-warnings
2259 .section ".tdata","awT",@progbits
2262 addl r16 = @ltoff(@dtpmod(foo#)), gp
2263 addl r17 = @ltoff(@dtprel(foo#)), gp
2264 addl r18 = @ltoff(@tprel(foo#)), gp
2265 addl r19 = @dtprel(foo#), gp
2266 adds r21 = @dtprel(foo#), r13
2267 movl r23 = @dtprel(foo#)
2268 addl r20 = @tprel(foo#), gp
2269 adds r22 = @tprel(foo#), r13
2270 movl r24 = @tprel(foo#)'
2273 tls_as_opt=--fatal-warnings
2277 .section .tdata,"awT",@progbits
2281 addiu $4, $28, %tlsgd(x)
2282 addiu $4, $28, %tlsldm(x)
2283 lui $4, %dtprel_hi(x)
2284 addiu $4, $4, %dtprel_lo(x)
2285 lw $4, %gottprel(x)($28)
2286 lui $4, %tprel_hi(x)
2287 addiu $4, $4, %tprel_lo(x)'
2290 tls_as_opt='-32 --fatal-warnings'
2294 .section ".tdata","awT",@progbits
2302 addi 3,31,ld0@got@tlsgd
2304 addi 3,31,x1@got@tlsld
2307 addis 9,3,x2@dtprel@ha
2308 addi 9,9,x2@dtprel@l
2309 lwz 9,x3@got@tprel(31)
2312 addis 9,2,x2@tprel@ha
2313 addi 9,9,x2@tprel@l'
2316 tls_as_opt="-a32 --fatal-warnings"
2320 .section ".tdata","awT",@progbits
2328 addi 3,2,ld0@got@tlsgd
2334 addi 3,2,x1@got@tlsld
2340 addis 9,3,x2@dtprel@ha
2341 addi 9,9,x2@dtprel@l
2344 ld 9,x3@got@dtprel(2)
2350 tls_as_opt="-a64 --fatal-warnings"
2354 .section ".tdata","awT",@progbits
2363 l %r1,foo@GOTNTPOFF(%r12)
2364 l %r1,0(%r1):tls_load:foo
2365 bas %r14,0(%r1,%r13):tls_gdcall:foo
2366 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2369 tls_as_opt="-m31 --fatal-warnings"
2373 .section ".tdata","awT",@progbits
2381 lg %r1,foo@GOTNTPOFF(%r12)
2382 larl %r1,foo@INDNTPOFF
2383 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2384 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2387 tls_as_opt="-m64 -Aesame --fatal-warnings"
2389 sh-*-* | sh[34]-*-*)
2391 .section ".tdata","awT",@progbits
2401 tls_as_opt=--fatal-warnings
2405 sparc*-sun-solaris2.*)
2412 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2414 .section ".tdata",#alloc,#write,#tls
2417 sethi %tgd_hi22(foo), %o0
2418 add %o0, %tgd_lo10(foo), %o1
2419 add %l7, %o1, %o0, %tgd_add(foo)
2420 call __tls_get_addr, %tgd_call(foo)
2421 sethi %tldm_hi22(foo), %l1
2422 add %l1, %tldm_lo10(foo), %l2
2423 add %l7, %l2, %o0, %tldm_add(foo)
2424 call __tls_get_addr, %tldm_call(foo)
2425 sethi %tldo_hix22(foo), %l3
2426 xor %l3, %tldo_lox10(foo), %l4
2427 add %o0, %l4, %l5, %tldo_add(foo)
2428 sethi %tie_hi22(foo), %o3
2429 add %o3, %tie_lo10(foo), %o3
2430 ld [%l7 + %o3], %o2, %tie_ld(foo)
2431 add %g7, %o2, %o4, %tie_add(foo)
2432 sethi %tle_hix22(foo), %l1
2433 xor %l1, %tle_lox10(foo), %o5
2434 ld [%g7 + %o5], %o1'
2439 .section ".tdata","awT",@progbits
2442 sethi %tgd_hi22(foo), %o0
2443 add %o0, %tgd_lo10(foo), %o1
2444 add %l7, %o1, %o0, %tgd_add(foo)
2445 call __tls_get_addr, %tgd_call(foo)
2446 sethi %tldm_hi22(foo), %l1
2447 add %l1, %tldm_lo10(foo), %l2
2448 add %l7, %l2, %o0, %tldm_add(foo)
2449 call __tls_get_addr, %tldm_call(foo)
2450 sethi %tldo_hix22(foo), %l3
2451 xor %l3, %tldo_lox10(foo), %l4
2452 add %o0, %l4, %l5, %tldo_add(foo)
2453 sethi %tie_hi22(foo), %o3
2454 add %o3, %tie_lo10(foo), %o3
2455 ld [%l7 + %o3], %o2, %tie_ld(foo)
2456 add %g7, %o2, %o4, %tie_add(foo)
2457 sethi %tle_hix22(foo), %l1
2458 xor %l1, %tle_lox10(foo), %o5
2459 ld [%g7 + %o5], %o1'
2462 tls_as_opt="-32 --fatal-warnings"
2467 if test -z "$tls_first_major"; then
2468 : # If we don't have a check, assume no support.
2470 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2471 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2472 [AC_DEFINE(HAVE_AS_TLS, 1,
2473 [Define if your assembler supports thread-local storage.])])
2476 # Target-specific assembler checks.
2478 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2479 gcc_cv_ld_static_dynamic=no
2480 if test $in_tree_ld = yes ; then
2481 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2482 gcc_cv_ld_static_dynamic=yes
2484 elif test x$gcc_cv_ld != x; then
2485 # Check if linker supports -Bstatic/-Bdynamic option
2486 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2487 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2488 gcc_cv_ld_static_dynamic=yes
2491 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2492 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2493 [Define if your linker supports -Bstatic/-Bdynamic option.])
2495 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2497 if test x"$demangler_in_ld" = xyes; then
2498 AC_MSG_CHECKING(linker --demangle support)
2499 gcc_cv_ld_demangle=no
2500 if test $in_tree_ld = yes; then
2501 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2502 gcc_cv_ld_demangle=yes
2504 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2505 # Check if the GNU linker supports --demangle option
2506 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2507 gcc_cv_ld_demangle=yes
2510 if test x"$gcc_cv_ld_demangle" = xyes; then
2511 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2512 [Define if your linker supports --demangle option.])
2514 AC_MSG_RESULT($gcc_cv_ld_demangle)
2518 # All TARGET_ABI_OSF targets.
2519 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2520 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2521 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2524 extbl $3, $2, $3 !lituse_bytoff!1
2525 ldq $2, a($29) !literal!1
2526 ldq $4, b($29) !literal!2
2527 ldq_u $3, 0($2) !lituse_base!1
2528 ldq $27, f($29) !literal!5
2529 jsr $26, ($27), f !lituse_jsr!5
2530 ldah $29, 0($26) !gpdisp!3
2531 lda $0, c($29) !gprel
2532 ldah $1, d($29) !gprelhigh
2533 lda $1, d($1) !gprellow
2534 lda $29, 0($29) !gpdisp!3],,
2535 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2536 [Define if your assembler supports explicit relocations.])])
2537 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2538 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2541 ldq $27, a($29) !literal!1
2542 jsr $26, ($27), a !lituse_jsrdirect!1],,
2543 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2544 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2548 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2549 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2550 [-no-mul-bug-abort], [.text],,
2551 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2552 [Define if your assembler supports the -no-mul-bug-abort option.])])
2556 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2557 [.register %g2, #scratch],,
2558 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2559 [Define if your assembler supports .register.])])
2561 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2563 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2564 [Define if your assembler supports -relax option.])])
2566 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2567 gcc_cv_as_sparc_ua_pcrel,,
2575 .uaword %r_disp32(foo)],
2576 [if test x$gcc_cv_ld != x \
2577 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2578 gcc_cv_as_sparc_ua_pcrel=yes
2581 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2582 [Define if your assembler and linker support unaligned PC relative relocs.])
2584 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2585 gcc_cv_as_sparc_ua_pcrel_hidden,,
2590 .uaword %r_disp32(foo)
2591 .byte 0x32, 0x33, 0x34
2596 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2597 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2598 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2599 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2600 if $gcc_cv_objdump -R conftest 2> /dev/null \
2601 | grep 'DISP32' > /dev/null 2>&1; then
2604 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2608 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2609 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2610 ]) # unaligned pcrel relocs
2612 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2613 gcc_cv_as_sparc_offsetable_lo10,,
2616 or %g1, %lo(ab) + 12, %g1
2617 or %g1, %lo(ab + 12), %g1],
2618 [if test x$gcc_cv_objdump != x \
2619 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2620 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2621 gcc_cv_as_sparc_offsetable_lo10=yes
2623 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2624 [Define if your assembler supports offsetable %lo().])])
2628 i[34567]86-*-* | x86_64-*-*)
2631 cygwin* | pe | mingw32*)
2632 # Used for DWARF 2 in PE
2633 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2634 gcc_cv_as_ix86_pe_secrel32,
2640 [if test x$gcc_cv_ld != x \
2641 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2642 gcc_cv_as_ix86_pe_secrel32=yes
2645 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2646 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2650 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2651 gcc_cv_as_ix86_filds_fists,
2652 [2,9,0],, [filds mem; fists mem],,
2653 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2654 [Define if your assembler uses the new HImode fild and fist notation.])])
2656 gcc_GAS_CHECK_FEATURE([cmov syntax],
2657 gcc_cv_as_ix86_cmov_sun_syntax,,,
2658 [cmovl.l %edx, %eax],,
2659 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2660 [Define if your assembler supports the Sun syntax for cmov.])])
2662 # This one is used unconditionally by i386.[ch]; it is to be defined
2663 # to 1 if the feature is present, 0 otherwise.
2664 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2665 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2671 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2672 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2673 [Define true if the assembler supports '.long foo@GOTOFF'.])
2677 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2678 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2680 addl r15 = @ltoffx(x#), gp
2682 ld8.mov r16 = [[r15]], x#],,
2683 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2684 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2690 *-*-aix*) conftest_s=' .machine "pwr5"
2694 gcc_GAS_CHECK_FEATURE([.machine directive support],
2695 gcc_cv_as_machine_directive,,,
2696 [ .machine ppc7400])
2697 if test x$gcc_cv_as_machine_directive != xyes; then
2698 echo "*** This target requires an assembler supporting \".machine\"" >&2
2699 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2700 test x$build = x$target && exit 1
2704 *) conftest_s=' .machine power4
2709 gcc_GAS_CHECK_FEATURE([mfcr field support],
2710 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2712 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2713 [Define if your assembler supports mfcr field.])])
2716 *-*-aix*) conftest_s=' .machine "pwr5"
2719 *) conftest_s=' .machine power5
2724 gcc_GAS_CHECK_FEATURE([popcntb support],
2725 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2727 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2728 [Define if your assembler supports popcntb field.])])
2731 *-*-aix*) conftest_s=' .csect .text[[PR]]
2733 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2737 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2738 *) conftest_s=' .text
2740 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2743 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2744 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2746 [AC_DEFINE(HAVE_AS_REL16, 1,
2747 [Define if your assembler supports R_PPC_REL16 relocs.])])
2751 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2752 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2753 [ lw $4,%gp_rel(foo)($4)],,
2754 [if test x$target_cpu_default = x
2755 then target_cpu_default=MASK_EXPLICIT_RELOCS
2756 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2759 if test x$gas_flag = xyes \
2760 || test x"$host" != x"$build" \
2761 || test ! -x "$gcc_cv_as" \
2762 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2765 echo "*** This configuration requires the GNU assembler" >&2
2770 # ??? Not all targets support dwarf2 debug_line, even within a version
2771 # of gas. Moreover, we need to emit a valid instruction to trigger any
2772 # info to the output file. So, as supported targets are added to gas 2.11,
2773 # add some instruction here to (also) show we expect this might work.
2774 # ??? Once 2.11 is released, probably need to add first known working
2775 # version to the per-target configury.
2777 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2778 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2779 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2782 ia64*-*-* | s390*-*-*)
2789 if test x"$insn" != x; then
2791 .file 1 \"conftest.s\"
2794 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2795 gcc_cv_as_dwarf2_debug_line,
2796 [elf,2,11,0],, [$conftest_s],
2797 [if test x$gcc_cv_objdump != x \
2798 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2799 | grep debug_line > /dev/null 2>&1; then
2800 gcc_cv_as_dwarf2_debug_line=yes
2803 # The .debug_line file table must be in the exact order that
2804 # we specified the files, since these indices are also used
2805 # by DW_AT_decl_file. Approximate this test by testing if
2806 # the assembler bitches if the same index is assigned twice.
2807 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2808 gcc_cv_as_dwarf2_file_buggy,,,
2812 if test $gcc_cv_as_dwarf2_debug_line = yes \
2813 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2814 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2815 [Define if your assembler supports dwarf2 .file/.loc directives,
2816 and preserves file table indices exactly as given.])
2819 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2820 gcc_cv_as_gdwarf2_flag,
2821 [elf,2,11,0], [--gdwarf2], [$insn],,
2822 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2823 [Define if your assembler supports the --gdwarf2 option.])])
2825 gcc_GAS_CHECK_FEATURE([--gstabs option],
2826 gcc_cv_as_gstabs_flag,
2827 [elf,2,11,0], [--gstabs], [$insn],
2828 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2829 # and warns about it, but still exits successfully. So check for
2831 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2833 else gcc_cv_as_gstabs_flag=yes
2835 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2836 [Define if your assembler supports the --gstabs option.])])
2839 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2840 gcc_cv_ld_ro_rw_mix=unknown
2841 if test $in_tree_ld = yes ; then
2842 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2843 && test $in_tree_ld_is_elf = yes; then
2844 gcc_cv_ld_ro_rw_mix=read-write
2846 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2847 echo '.section myfoosect, "a"' > conftest1.s
2848 echo '.section myfoosect, "aw"' > conftest2.s
2849 echo '.byte 1' >> conftest2.s
2850 echo '.section myfoosect, "a"' > conftest3.s
2851 echo '.byte 0' >> conftest3.s
2852 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2853 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2854 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2855 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2856 conftest2.o conftest3.o > /dev/null 2>&1; then
2857 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2858 | sed -e '/myfoosect/!d' -e N`
2859 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2860 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2861 gcc_cv_ld_ro_rw_mix=read-only
2863 gcc_cv_ld_ro_rw_mix=read-write
2868 rm -f conftest.* conftest[123].*
2871 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2872 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2873 [Define if your linker links a mix of read-only
2874 and read-write sections into a read-write section.])
2876 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2878 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2879 gcc_cv_ld_eh_frame_hdr=no
2880 if test $in_tree_ld = yes ; then
2881 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2882 && test $in_tree_ld_is_elf = yes; then
2883 gcc_cv_ld_eh_frame_hdr=yes
2885 elif test x$gcc_cv_ld != x; then
2886 # Check if linker supports --eh-frame-hdr option
2887 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2888 gcc_cv_ld_eh_frame_hdr=yes
2891 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
2892 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2893 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2894 [Define if your linker supports --eh-frame-hdr option.])
2896 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2898 AC_MSG_CHECKING(linker position independent executable support)
2900 if test $in_tree_ld = yes ; then
2901 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2902 && test $in_tree_ld_is_elf = yes; then
2905 elif test x$gcc_cv_ld != x; then
2906 # Check if linker supports -pie option
2907 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2911 if test x"$gcc_cv_ld_pie" = xyes; then
2912 AC_DEFINE(HAVE_LD_PIE, 1,
2913 [Define if your linker supports -pie option.])
2915 AC_MSG_RESULT($gcc_cv_ld_pie)
2921 AC_CACHE_CHECK(linker --as-needed support,
2922 gcc_cv_ld_as_needed,
2923 [gcc_cv_ld_as_needed=no
2924 if test $in_tree_ld = yes ; then
2925 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2926 && test $in_tree_ld_is_elf = yes; then
2927 gcc_cv_ld_as_needed=yes
2929 elif test x$gcc_cv_ld != x; then
2930 # Check if linker supports --as-needed and --no-as-needed options
2931 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2932 gcc_cv_ld_as_needed=yes
2936 if test x"$gcc_cv_ld_as_needed" = xyes; then
2937 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2938 [Define if your linker supports --as-needed and --no-as-needed options.])
2942 powerpc64*-*-linux*)
2943 AC_CACHE_CHECK(linker support for omitting dot symbols,
2944 gcc_cv_ld_no_dot_syms,
2945 [gcc_cv_ld_no_dot_syms=no
2946 if test $in_tree_ld = yes ; then
2947 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2948 gcc_cv_ld_no_dot_syms=yes
2950 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2951 cat > conftest1.s <<EOF
2955 cat > conftest2.s <<EOF
2956 .section ".opd","aw"
2961 .quad .LEfoo,.TOC.@tocbase,0
2967 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2968 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2969 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2970 gcc_cv_ld_no_dot_syms=yes
2972 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2975 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2976 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2977 [Define if your PowerPC64 linker only needs function descriptor syms.])
2982 AC_CACHE_CHECK(linker --sysroot support,
2984 [gcc_cv_ld_sysroot=no
2985 if test $in_tree_ld = yes ; then
2986 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
2987 gcc_cv_ld_sysroot=yes
2989 elif test x$gcc_cv_ld != x; then
2990 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
2991 gcc_cv_ld_sysroot=yes
2994 if test x"$gcc_cv_ld_sysroot" = xyes; then
2995 AC_DEFINE(HAVE_LD_SYSROOT, 1,
2996 [Define if your linker supports --sysroot.])
2999 if test x$with_sysroot = x && test x$host = x$target \
3000 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3001 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3002 [Define to PREFIX/include if cpp should also search that directory.])
3005 # Test for stack protector support in target C library.
3008 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3009 gcc_cv_libc_provides_ssp,
3010 [gcc_cv_libc_provides_ssp=no
3011 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3012 if test "x$with_sysroot" = x; then
3013 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3014 elif test "x$with_sysroot" = xyes; then
3015 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3017 glibc_header_dir="${with_sysroot}/usr/include"
3020 glibc_header_dir=/usr/include
3022 # glibc 2.4 and later provides __stack_chk_fail and
3023 # either __stack_chk_guard, or TLS access to stack guard canary.
3024 if test -f $glibc_header_dir/features.h \
3025 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3026 $glibc_header_dir/features.h > /dev/null; then
3027 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3028 $glibc_header_dir/features.h > /dev/null; then
3029 gcc_cv_libc_provides_ssp=yes
3030 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3031 $glibc_header_dir/features.h > /dev/null \
3032 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3033 $glibc_header_dir/features.h > /dev/null; then
3034 gcc_cv_libc_provides_ssp=yes
3037 *) gcc_cv_libc_provides_ssp=no ;;
3039 if test x$gcc_cv_libc_provides_ssp = xyes; then
3040 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3041 [Define if your target C library provides stack protector support])
3044 # Find out what GC implementation we want, or may, use.
3046 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3054 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3057 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3062 echo "Using $GGC for garbage collection."
3064 # Use the system's zlib library.
3066 zlibinc="-I\$(srcdir)/../zlib"
3067 AC_ARG_WITH(system-zlib,
3068 [ --with-system-zlib use installed libz],
3075 dnl Very limited version of automake's enable-maintainer-mode
3077 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3078 dnl maintainer-mode is disabled by default
3079 AC_ARG_ENABLE(maintainer-mode,
3080 [ --enable-maintainer-mode
3081 enable make rules and dependencies not useful
3082 (and sometimes confusing) to the casual installer],
3083 maintainer_mode=$enableval,
3086 AC_MSG_RESULT($maintainer_mode)
3088 if test "$maintainer_mode" = "yes"; then
3099 # Make empty files to contain the specs and options for each language.
3100 # Then add #include lines to for a compiler that has specs and/or options.
3105 for subdir in . $subdirs
3107 if test -f $srcdir/$subdir/lang.opt; then
3108 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3110 if test -f $srcdir/$subdir/lang-specs.h; then
3111 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3113 if test -f $srcdir/$subdir/$subdir-tree.def; then
3114 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3118 # These (without "all_") are set in each config-lang.in.
3119 # `language' must be a single word so is spelled singularly.
3124 all_outputs='Makefile gccbug mklibgcc libada-mk'
3125 # List of language makefile fragments.
3127 # List of language subdirectory makefiles. Deprecated.
3129 # Files for gengtype
3130 all_gtfiles="$target_gtfiles"
3131 # Files for gengtype with language
3132 all_gtfiles_files_langs=
3133 all_gtfiles_files_files=
3135 # Add the language fragments.
3136 # Languages are added via two mechanisms. Some information must be
3137 # recorded in makefile variables, these are defined in config-lang.in.
3138 # We accumulate them and plug them into the main Makefile.
3139 # The other mechanism is a set of hooks for each of the main targets
3140 # like `clean', `install', etc.
3142 language_hooks="Make-hooks"
3152 . ${srcdir}/$s/config-lang.in
3153 if test "x$language" = x
3155 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3158 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3159 if test -f ${srcdir}/$s/Makefile.in
3160 then all_lang_makefiles="$s/Makefile"
3162 all_languages="$all_languages $language"
3163 if test "x$boot_language" = xyes
3165 all_boot_languages="$all_boot_languages $language"
3167 all_compilers="$all_compilers $compilers"
3168 all_stagestuff="$all_stagestuff $stagestuff"
3169 all_outputs="$all_outputs $outputs"
3170 all_gtfiles="$all_gtfiles $gtfiles"
3173 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3174 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3178 # Pick up gtfiles for c
3181 . ${srcdir}/c-config-lang.in
3182 all_gtfiles="$all_gtfiles $gtfiles"
3185 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3186 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3190 for language in $all_languages
3192 check_languages="$check_languages check-$language"
3195 # We link each language in with a set of hooks, reached indirectly via
3200 target_list="all.build all.cross start.encap rest.encap tags \
3201 install-normal install-common install-man \
3202 uninstall info man srcextra srcman srcinfo \
3203 mostlyclean clean distclean maintainer-clean \
3204 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3205 for t in $target_list
3208 for lang in $all_languages
3212 echo "lang.$t: $x" >> Make-hooks
3221 echo "dir ." > .gdbinit
3222 echo "dir ${srcdir}" >> .gdbinit
3223 if test x$gdb_needs_out_file_path = xyes
3225 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3227 if test "x$subdirs" != x; then
3230 echo "dir ${srcdir}/$s" >> .gdbinit
3233 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3235 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3236 # absolute path for gcc_tooldir based on inserting the number of up-directory
3237 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3238 # $(libsubdir)/@(unlibsubdir) based path.
3239 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3240 # make and thus we'd get different behavior depending on where we built the
3242 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3243 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3245 changequote(<<, >>)dnl
3246 # An explanation of the sed strings:
3247 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3248 # -e 's|/$||' match a trailing forward slash and eliminates it
3249 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3250 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3252 # (*) Note this pattern overwrites the first character of the string
3253 # with a forward slash if one is not already present. This is not a
3254 # problem because the exact names of the sub-directories concerned is
3255 # unimportant, just the number of them matters.
3257 # The practical upshot of these patterns is like this:
3259 # prefix exec_prefix result
3260 # ------ ----------- ------
3262 # /foo/ /foo/bar ../
3263 # /foo /foo/bar/ ../
3264 # /foo/ /foo/bar/ ../
3265 # /foo /foo/bar/ugg ../../
3268 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3269 changequote([, ])dnl
3271 AC_SUBST(gcc_tooldir)
3274 # Find a directory in which to install a shared libgcc.
3276 AC_ARG_ENABLE(version-specific-runtime-libs,
3277 [ --enable-version-specific-runtime-libs
3278 specify that runtime libraries should be
3279 installed in a compiler-specific directory])
3281 AC_ARG_WITH(slibdir,
3282 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3283 slibdir="$with_slibdir",
3284 if test "${enable_version_specific_runtime_libs+set}" = set; then
3285 slibdir='$(libsubdir)'
3286 elif test "$host" != "$target"; then
3287 slibdir='$(build_tooldir)/lib'
3293 objdir=`${PWDCMD-pwd}`
3296 # Substitute configuration variables
3299 AC_SUBST(all_boot_languages)
3300 AC_SUBST(all_compilers)
3301 AC_SUBST(all_gtfiles)
3302 AC_SUBST(all_gtfiles_files_langs)
3303 AC_SUBST(all_gtfiles_files_files)
3304 AC_SUBST(all_lang_makefrags)
3305 AC_SUBST(all_lang_makefiles)
3306 AC_SUBST(all_languages)
3307 AC_SUBST(all_stagestuff)
3308 AC_SUBST(build_exeext)
3309 AC_SUBST(build_install_headers_dir)
3310 AC_SUBST(build_xm_file_list)
3311 AC_SUBST(build_xm_include_list)
3312 AC_SUBST(build_xm_defines)
3313 AC_SUBST(check_languages)
3314 AC_SUBST(cc_set_by_configure)
3315 AC_SUBST(quoted_cc_set_by_configure)
3316 AC_SUBST(cpp_install_dir)
3317 AC_SUBST(xmake_file)
3318 AC_SUBST(tmake_file)
3319 AC_SUBST(extra_gcc_objs)
3320 AC_SUBST(extra_headers_list)
3321 AC_SUBST(extra_objs)
3322 AC_SUBST(extra_parts)
3323 AC_SUBST(extra_passes)
3324 AC_SUBST(extra_programs)
3325 AC_SUBST(float_h_file)
3326 AC_SUBST(gcc_config_arguments)
3327 AC_SUBST(gcc_gxx_include_dir)
3328 AC_SUBST(libstdcxx_incdir)
3329 AC_SUBST(host_exeext)
3330 AC_SUBST(host_xm_file_list)
3331 AC_SUBST(host_xm_include_list)
3332 AC_SUBST(host_xm_defines)
3333 AC_SUBST(out_host_hook_obj)
3335 AC_SUBST(lang_opt_files)
3336 AC_SUBST(lang_specs_files)
3337 AC_SUBST(lang_tree_files)
3338 AC_SUBST(local_prefix)
3340 AC_SUBST(objc_boehm_gc)
3342 AC_SUBST(out_object_file)
3343 AC_SUBST(stage_prefix_set_by_configure)
3344 AC_SUBST(quoted_stage_prefix_set_by_configure)
3345 AC_SUBST(thread_file)
3346 AC_SUBST(tm_file_list)
3347 AC_SUBST(tm_include_list)
3348 AC_SUBST(tm_defines)
3349 AC_SUBST(tm_p_file_list)
3350 AC_SUBST(tm_p_include_list)
3351 AC_SUBST(xm_file_list)
3352 AC_SUBST(xm_include_list)
3353 AC_SUBST(xm_defines)
3354 AC_SUBST(c_target_objs)
3355 AC_SUBST(cxx_target_objs)
3356 AC_SUBST(target_cpu_default)
3358 AC_SUBST_FILE(language_hooks)
3361 if test x${build} = x${host} ; then
3362 if test x${host} = x${target} ; then
3363 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3365 echo "Links are now set up to build a cross-compiler" 1>&2
3366 echo " from ${host} to ${target}." 1>&2
3369 if test x${host} = x${target} ; then
3370 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3371 echo " for ${target}." 1>&2
3373 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3374 echo " from ${host} to ${target}." 1>&2
3378 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3379 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3381 # Configure the subdirectories
3382 # AC_CONFIG_SUBDIRS($subdirs)
3384 # Create the Makefile
3385 # and configure language subdirectories
3386 AC_CONFIG_FILES($all_outputs)
3388 AC_CONFIG_COMMANDS([default],
3390 case ${CONFIG_HEADERS} in
3391 *auto-host.h:config.in*)
3394 # Make sure all the subdirs exist.
3395 for d in $subdirs doc build
3397 test -d $d || mkdir $d
3399 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3400 # bootstrapping and the installation procedure can still use
3401 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3402 # FLAGS_TO_PASS has been modified to solve the problem there.
3403 # This is virtually a duplicate of what happens in configure.lang; we do
3404 # an extra check to make sure this only happens if ln -s can be used.
3407 for d in ${subdirs} ; do
3408 STARTDIR=`${PWDCMD-pwd}`
3410 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3413 $LN_S ../$t $t 2>/dev/null
3420 [subdirs='$subdirs'])