2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003
5 # Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 2, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING. If not, write to the Free
21 #Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 # Determine the host, build, and target systems
35 # Determine the target- and build-specific subdirectories
38 # Set program_transform_name
41 # Check for bogus environment variables.
42 # Test if LIBRARY_PATH contains the notation for the current directory
43 # since this would lead to problems installing/building glibc.
44 # LIBRARY_PATH contains the current directory if one of the following
46 # - one of the terminals (":" and ";") is the first or last sign
47 # - two terminals occur directly after each other
48 # - the path contains an element with a dot in it
49 AC_MSG_CHECKING(LIBRARY_PATH variable)
51 case ${LIBRARY_PATH} in
52 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
53 library_path_setting="contains current directory"
56 library_path_setting="ok"
60 AC_MSG_RESULT($library_path_setting)
61 if test "$library_path_setting" != "ok"; then
63 *** LIBRARY_PATH shouldn't contain the current directory when
64 *** building gcc. Please change the environment variable
65 *** and run configure again.])
68 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
69 # since this would lead to problems installing/building glibc.
70 # GCC_EXEC_PREFIX contains the current directory if one of the following
72 # - one of the terminals (":" and ";") is the first or last sign
73 # - two terminals occur directly after each other
74 # - the path contains an element with a dot in it
75 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
77 case ${GCC_EXEC_PREFIX} in
78 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
79 gcc_exec_prefix_setting="contains current directory"
82 gcc_exec_prefix_setting="ok"
86 AC_MSG_RESULT($gcc_exec_prefix_setting)
87 if test "$gcc_exec_prefix_setting" != "ok"; then
89 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
90 *** building gcc. Please change the environment variable
91 *** and run configure again.])
98 # Specify the local prefix
100 AC_ARG_WITH(local-prefix,
101 [ --with-local-prefix=DIR specifies directory to put local include],
102 [case "${withval}" in
103 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
105 *) local_prefix=$with_local_prefix ;;
108 # Default local prefix if it is empty
109 if test x$local_prefix = x; then
110 local_prefix=/usr/local
113 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
114 # passed in by the toplevel make and thus we'd get different behavior
115 # depending on where we built the sources.
117 # Specify the g++ header file directory
118 AC_ARG_WITH(gxx-include-dir,
119 [ --with-gxx-include-dir=DIR
120 specifies directory to put g++ header files],
121 [case "${withval}" in
122 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
124 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
127 if test x${gcc_gxx_include_dir} = x; then
128 if test x${enable_version_specific_runtime_libs} = xyes; then
129 gcc_gxx_include_dir='${libsubdir}/include/c++'
131 topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
132 changequote(<<, >>)dnl
133 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
138 AC_ARG_WITH(cpp_install_dir,
139 [ --with-cpp-install-dir=DIR
140 install the user visible C preprocessor in DIR
141 (relative to PREFIX) as well as PREFIX/bin],
142 [if test x$withval = xyes; then
143 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
144 elif test x$withval != xno; then
145 cpp_install_dir=$withval
148 # -------------------
149 # Find default linker
150 # -------------------
154 [ --with-gnu-ld arrange to work with GNU ld.],
155 gnu_ld_flag="$with_gnu_ld",
158 # With pre-defined ld
160 [ --with-ld arrange to use the specified ld (full pathname)],
161 DEFAULT_LINKER="$with_ld")
162 if test x"${DEFAULT_LINKER+set}" = x"set"; then
163 if test ! -x "$DEFAULT_LINKER"; then
164 AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
165 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
168 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
169 [Define to enable the use of a default linker.])
172 AC_MSG_CHECKING([whether a default linker was specified])
173 if test x"${DEFAULT_LINKER+set}" = x"set"; then
174 if test x"$gnu_ld_flag" = x"no"; then
175 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
177 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
183 # ----------------------
184 # Find default assembler
185 # ----------------------
189 [ --with-gnu-as arrange to work with GNU as],
190 gas_flag="$with_gnu_as",
194 [ --with-as arrange to use the specified as (full pathname)],
195 DEFAULT_ASSEMBLER="$with_as")
196 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_ASSEMBLER"; then
198 AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
199 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
203 [Define to enable the use of a default assembler.])
206 AC_MSG_CHECKING([whether a default assembler was specified])
207 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
208 if test x"$gas_flag" = x"no"; then
209 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
211 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
221 # Find the native compiler
224 # autoconf is lame and doesn't give us any substitution variable for this.
225 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
226 NO_MINUS_C_MINUS_O=yes
228 OUTPUT_OPTION='-o $@'
230 AC_SUBST(NO_MINUS_C_MINUS_O)
231 AC_SUBST(OUTPUT_OPTION)
233 # -------------------------
234 # Check C compiler features
235 # -------------------------
237 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
238 ac_cv_prog_cc_no_long_long,
239 [save_CFLAGS="$CFLAGS"
240 CFLAGS="-Wno-long-long"
241 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
242 ac_cv_prog_cc_no_long_long=no)
243 CFLAGS="$save_CFLAGS"])
251 # sizeof(char) is 1 by definition.
252 AC_COMPILE_CHECK_SIZEOF(void *)
253 AC_COMPILE_CHECK_SIZEOF(short)
254 AC_COMPILE_CHECK_SIZEOF(int)
255 AC_COMPILE_CHECK_SIZEOF(long)
256 if test $ac_cv_c_long_long = yes; then
257 AC_COMPILE_CHECK_SIZEOF(long long)
259 if test $ac_cv_c___int64 = yes; then
260 AC_COMPILE_CHECK_SIZEOF(__int64)
267 # See if GNAT has been installed
270 if test x$have_gnat != xno ; then
271 AC_CACHE_CHECK(whether ${ADAC} accepts -Wno-long-long,
272 ac_cv_prog_adac_no_long_long,
273 [cat >conftest.adb <<EOF
274 procedure conftest is begin null; end conftest;
276 if $ADAC -Wno-long-long -c conftest.adb 1>&5 2>&5 ; then
277 ac_cv_prog_adac_no_long_long=yes
279 ac_cv_prog_adac_no_long_long=no
283 ac_cv_prog_adac_no_long_long=yes
286 # ---------------------
287 # Warnings and checking
288 # ---------------------
291 if test $ac_cv_prog_cc_no_long_long = yes && \
292 test $ac_cv_prog_adac_no_long_long = yes ; then
293 strict1_warn="-pedantic -Wno-long-long"
295 AC_SUBST(strict1_warn)
297 # If the native compiler is GCC, we can enable warnings even in stage1.
298 # That's useful for people building cross-compilers, or just running a
301 if test "x$GCC" = "xyes"; then
302 warn_cflags='$(GCC_WARN_CFLAGS)'
304 AC_SUBST(warn_cflags)
306 # Enable -Werror in bootstrap stage2 and later.
307 # Change the default to "no" on release branches.
308 AC_ARG_ENABLE(werror,
309 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
311 if test x$enable_werror = xyes ; then
316 # Enable expensive internal checks
317 AC_ARG_ENABLE(checking,
318 [ --enable-checking[=LIST]
319 enable expensive run-time checks. With LIST,
320 enable only specific categories of checks.
321 Categories are: misc,tree,rtl,rtlflag,gc,gcac,fold;
322 default is misc,tree,gc,rtlflag],
328 ac_gc_always_collect=
330 case "${enableval}" in
331 yes) ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;
332 ac_rtlflag_checking=1 ;;
334 *) IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
335 set fnord $enableval; shift
340 misc) ac_checking=1 ;;
341 tree) ac_tree_checking=1 ;;
342 rtlflag) ac_rtlflag_checking=1 ;;
343 rtl) ac_rtl_checking=1 ;;
344 gc) ac_gc_checking=1 ;;
345 gcac) ac_gc_always_collect=1 ;;
346 fold) ac_fold_checking=1 ;;
347 valgrind) ac_checking_valgrind=1 ;;
348 *) AC_MSG_ERROR(unknown check category $check) ;;
354 # Enable some checks by default for development versions of GCC
355 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1; ac_rtlflag_checking=1;])
357 if test x$ac_checking != x ; then
358 AC_DEFINE(ENABLE_CHECKING, 1,
359 [Define if you want more run-time sanity checks. This one gets a grab
360 bag of miscellaneous but relatively cheap checks.])
361 nocommon_flag=-fno-common
363 AC_SUBST(nocommon_flag)
364 if test x$ac_tree_checking != x ; then
365 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
366 [Define if you want all operations on trees (the basic data
367 structure of the front ends) to be checked for dynamic type safety
368 at runtime. This is moderately expensive.])
370 if test x$ac_rtl_checking != x ; then
371 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
372 [Define if you want all operations on RTL (the basic data structure
373 of the optimizer and back end) to be checked for dynamic type safety
374 at runtime. This is quite expensive.])
376 if test x$ac_rtlflag_checking != x ; then
377 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
378 [Define if you want RTL flag accesses to be checked against the RTL
379 codes that are supported for each access macro. This is relatively
382 if test x$ac_gc_checking != x ; then
383 AC_DEFINE(ENABLE_GC_CHECKING, 1,
384 [Define if you want the garbage collector to do object poisoning and
385 other memory allocation checks. This is quite expensive.])
387 if test x$ac_gc_always_collect != x ; then
388 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
389 [Define if you want the garbage collector to operate in maximally
390 paranoid mode, validating the entire heap and collecting garbage at
391 every opportunity. This is extremely expensive.])
393 if test x$ac_fold_checking != x ; then
394 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
395 [Define if you want fold checked that it never destructs its argument.
396 This is quite expensive.])
398 valgrind_path_defines=
400 if test x$ac_checking_valgrind != x ; then
401 # It is certainly possible that there's valgrind but no valgrind.h.
402 # GCC relies on making annotations so we must have both.
403 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
405 [#include <memcheck.h>
406 #ifndef VALGRIND_DISCARD
407 #error VALGRIND_DISCARD not defined
409 [gcc_cv_header_memcheck_h=yes],
410 gcc_cv_header_memcheck_h=no)
411 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
412 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
413 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
414 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
415 if test "x$valgrind_path" = "x" || (test $have_valgrind_h = no && test $gcc_cv_header_memcheck_h = no); then
416 AC_MSG_ERROR([*** Can't find both valgrind and valgrind.h/memcheck.h])
418 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
419 valgrind_command="$valgrind_path -q"
420 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
421 [Define if you want to run subprograms and generated programs
422 through valgrind (a memory checker). This is extremely expensive.])
423 if test $gcc_cv_header_memcheck_h = yes; then
424 AC_DEFINE(HAVE_MEMCHECK_H, 1,
425 [Define if valgrind's memcheck.h header is installed.])
428 AC_SUBST(valgrind_path_defines)
429 AC_SUBST(valgrind_command)
431 # Enable code coverage collection
432 AC_ARG_ENABLE(coverage,
433 [ --enable-coverage[=LEVEL]
434 enable compiler\'s code coverage collection.
435 Use to measure compiler performance and locate
436 unused parts of the compiler. With LEVEL, specify
437 optimization. Values are opt, noopt,
439 [case "${enableval}" in
441 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
444 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
447 AC_MSG_ERROR(unknown coverage setting $enableval)
451 AC_SUBST(coverage_flags)
453 # -------------------------------
454 # Miscenalleous configure options
455 # -------------------------------
459 [ --with-stabs arrange to use stabs instead of host debug format],
465 [ --with-elf arrange to use ELF instead of host debug format],
469 # Determine whether or not multilibs are enabled.
470 AC_ARG_ENABLE(multilib,
471 [ --enable-multilib enable library support for multiple ABIs],
472 [], [enable_multilib=yes])
473 AC_SUBST(enable_multilib)
475 # Enable __cxa_atexit for C++.
476 AC_ARG_ENABLE(__cxa_atexit,
477 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
481 # Pass with no value to take the default
482 # Pass with a value to specify a thread package
483 AC_ARG_ENABLE(threads,
484 [ --enable-threads enable thread usage for target GCC
485 --enable-threads=LIB use LIB thread package for target GCC],,
488 enable_threads_flag=$enable_threads
489 # Check if a valid thread package
490 case x${enable_threads_flag} in
493 target_thread_file='single'
497 target_thread_file=''
499 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
500 xsolaris | xwin32 | xdce | xrtems| xvxworks | xaix | xgnat)
501 target_thread_file=$enable_threads_flag
504 echo "$enable_threads is an unknown thread package" 1>&2
509 AC_ARG_ENABLE(objc-gc,
510 [ --enable-objc-gc enable the use of Boehm's garbage collector with
511 the GNU Objective-C runtime],
512 if test x$enable_objc_gc = xno; then
520 [ --with-dwarf2 force the default debug format to be DWARF 2],
521 dwarf2="$with_dwarf2",
524 AC_ARG_ENABLE(shared,
525 [ --disable-shared don't provide a shared libgcc],
527 case $enable_shared in
531 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
532 for pkg in $enableval; do
533 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
540 ], [enable_shared=yes])
541 AC_SUBST(enable_shared)
544 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
546 case ${with_sysroot} in
547 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
548 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
551 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
552 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
554 if test "x$exec_prefix" = xNONE; then
555 if test "x$prefix" = xNONE; then
556 test_prefix=/usr/local
561 test_prefix=$exec_prefix
563 case ${TARGET_SYSTEM_ROOT} in
564 "${test_prefix}"|"${test_prefix}/"*|\
565 '${exec_prefix}'|'${exec_prefix}/'*)
566 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
567 TARGET_SYSTEM_ROOT_DEFINE="$t"
572 TARGET_SYSTEM_ROOT_DEFINE=
573 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
575 AC_SUBST(TARGET_SYSTEM_ROOT)
576 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
577 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
579 # Build with intermodule optimisations
580 AC_ARG_ENABLE(intermodule,
581 [ --enable-intermodule build the compiler in one step],
582 [case "${enable_intermodule}" in
583 yes) onestep=-onestep : ;;
588 # -------------------------
589 # Checks for other programs
590 # -------------------------
594 # Find some useful tools
601 # See if we have the mktemp command.
602 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
604 # Do we have a single-tree copy of texinfo?
605 if test -f $srcdir/../texinfo/Makefile.in; then
606 MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
607 gcc_cv_prog_makeinfo_modern=yes
608 AC_MSG_RESULT([Using makeinfo from the unified source tree.])
610 # See if makeinfo has been installed and is modern enough
611 # that we can use it.
612 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
613 [GNU texinfo.* \([0-9][0-9.]*\)],
617 if test $gcc_cv_prog_makeinfo_modern = no; then
619 *** Makeinfo is missing or too old.
620 *** Info documentation will not be built.])
623 BUILD_INFO=info AC_SUBST(BUILD_INFO)
626 # Is pod2man recent enough to regenerate manpages?
627 AC_MSG_CHECKING([for recent Pod::Man])
628 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
630 GENERATED_MANPAGES=generated-manpages AC_SUBST(GENERATED_MANPAGES)
636 # 'make compare' can be significantly faster, if cmp itself can
637 # skip bytes instead of using tail. The test being performed is
638 # "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
639 # but we need to sink errors and handle broken shells.
640 AC_CACHE_CHECK([for cmp's capabilities], gcc_cv_prog_cmp_skip,
643 if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
644 if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
645 gcc_cv_prog_cmp_skip=slowcompare
647 gcc_cv_prog_cmp_skip=gnucompare
650 gcc_cv_prog_cmp_skip=slowcompare
654 make_compare_target=$gcc_cv_prog_cmp_skip
655 AC_SUBST(make_compare_target)
658 dnl Don't use AC_PROG_LEX; we insist on flex.
659 dnl LEXLIB is not useful in gcc.
660 if test -f $srcdir/../flex/skel.c; then
661 FLEX='$(objdir)/../flex/flex'
663 AC_CHECK_PROG(FLEX, flex, flex, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex)
667 # The -L switch is so bison can find its skeleton file.
668 if test -f $srcdir/../bison/bison.simple; then
669 BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
671 AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison)
674 # --------------------
675 # Checks for C headers
676 # --------------------
678 AC_MSG_CHECKING(for GNU C library)
679 AC_CACHE_VAL(gcc_cv_glibc,
681 [#include <features.h>],[
682 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
683 #error Not a GNU C library system
687 AC_MSG_RESULT($gcc_cv_glibc)
688 if test $gcc_cv_glibc = yes; then
689 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
694 gcc_AC_HEADER_STDBOOL
697 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
698 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
699 sys/resource.h sys/param.h sys/times.h sys/stat.h \
700 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
702 # Check for thread headers.
703 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
704 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
706 # These tests can't be done till we know if we have limits.h.
714 # Stage specific cflags for build.
720 stage1_cflags="-Wa,-J"
726 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
727 # sources; use -no-cpp-precomp to get to GNU cpp.
728 # Apple's GCC has bugs in designated initializer handling, so disable
730 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
733 AC_SUBST(stage1_cflags)
735 # These libraries may be used by collect2.
736 # We may need a special search path to get them linked.
737 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
739 for libs in '' -lld -lmld \
740 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
741 '-L/usr/lib/cmplrs/cc3.11 -lmld'
744 AC_TRY_LINK_FUNC(ldopen,
745 [gcc_cv_collect2_libs="$libs"; break])
748 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
749 case $gcc_cv_collect2_libs in
751 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
753 AC_SUBST(COLLECT2_LIBS)
755 # When building Ada code on Alpha, we need exc_resume which is usually in
756 # -lexc. So test for it.
759 AC_SEARCH_LIBS(exc_resume, exc)
762 AC_SUBST(GNAT_LIBEXC)
764 # Some systems put ldexp and frexp in libm instead of libc; assume
765 # they're both in the same place. jcf-dump needs them.
768 AC_SEARCH_LIBS(ldexp, m)
773 # Use <inttypes.h> only if it exists,
774 # doesn't clash with <sys/types.h>, and declares intmax_t.
775 AC_MSG_CHECKING(for inttypes.h)
776 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
778 [#include <sys/types.h>
779 #include <inttypes.h>],
781 [gcc_cv_header_inttypes_h=yes],
782 gcc_cv_header_inttypes_h=no)])
783 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
784 if test $gcc_cv_header_inttypes_h = yes; then
785 AC_DEFINE(HAVE_INTTYPES_H, 1,
786 [Define if you have a working <inttypes.h> header file.])
789 dnl Disabled until we have a complete test for buggy enum bitfields.
790 dnl gcc_AC_C_ENUM_BF_UNSIGNED
792 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
793 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
794 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
795 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
798 if test x$ac_cv_func_mbstowcs = xyes; then
799 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
800 [ AC_TRY_RUN([#include <stdlib.h>
806 gcc_cv_func_mbstowcs_works=yes,
807 gcc_cv_func_mbstowcs_works=no,
808 gcc_cv_func_mbstowcs_works=yes)])
809 if test x$gcc_cv_func_mbstowcs_works = xyes; then
810 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
811 [Define this macro if mbstowcs does not crash when its
812 first argument is NULL.])
816 gcc_AC_CHECK_TYPE(ssize_t, int)
818 # Try to determine the array type of the second argument of getgroups
819 # for the target system (int or gid_t).
821 if test "${target}" = "${build}"; then
822 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
825 # This condition may need some tweaking. It should include all
826 # targets where the array type of the second argument of getgroups
827 # is int and the type of gid_t is not equivalent to int.
828 *-*-sunos* | *-*-ultrix*)
829 TARGET_GETGROUPS_T=int
832 TARGET_GETGROUPS_T=gid_t
836 AC_SUBST(TARGET_GETGROUPS_T)
838 gcc_AC_FUNC_PRINTF_PTR
839 gcc_AC_FUNC_MMAP_BLACKLIST
844 *** UWIN may not be used as a host platform because
845 *** linking with posix.dll is not allowed by the GNU GPL])
848 # Under VMS, vfork works very different than on Unix. The standard test
849 # won't work, and it isn't easily adaptable. It makes more sense to
851 ac_cv_func_vfork_works=yes
857 # Until we have in-tree GNU iconv:
859 AC_SUBST(LIBICONV_DEP)
863 # We will need to find libiberty.h and ansidecl.h
864 saved_CFLAGS="$CFLAGS"
865 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
866 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
867 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
868 fprintf_unlocked strstr errno vasprintf \
869 malloc realloc calloc free basename getopt clock, , ,[
870 #include "ansidecl.h"
871 #include "system.h"])
873 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
874 #include "ansidecl.h"
876 #ifdef HAVE_SYS_RESOURCE_H
877 #include <sys/resource.h>
882 #include "ansidecl.h"
884 #ifdef HAVE_SYS_RESOURCE_H
885 #include <sys/resource.h>
887 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
888 [Define to \`long' if <sys/resource.h> doesn't define.])])
890 gcc_AC_CHECK_DECLS(ldgetname, , ,[
891 #include "ansidecl.h"
898 gcc_AC_CHECK_DECLS(times, , ,[
899 #include "ansidecl.h"
901 #ifdef HAVE_SYS_TIMES_H
902 #include <sys/times.h>
906 # More time-related stuff.
907 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
909 #include "ansidecl.h"
911 #ifdef HAVE_SYS_TIMES_H
912 #include <sys/times.h>
914 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
915 if test $ac_cv_struct_tms = yes; then
916 AC_DEFINE(HAVE_STRUCT_TMS, 1,
917 [Define if <sys/times.h> defines struct tms.])
920 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
921 # revisit after autoconf 2.50.
922 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
924 #include "ansidecl.h"
926 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
927 if test $gcc_cv_type_clock_t = yes; then
928 AC_DEFINE(HAVE_CLOCK_T, 1,
929 [Define if <time.h> defines clock_t.])
932 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
934 #include "ansidecl.h"
937 [if ((uchar *)0) return 0;
938 if (sizeof(uchar)) return 0;],
939 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
940 if test $ac_cv_type_uchar = yes; then
941 AC_DEFINE(HAVE_UCHAR, 1,
942 [Define if <sys/types.h> defines \`uchar'.])
945 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
946 CFLAGS="$saved_CFLAGS"
948 gcc_AC_INITFINI_ARRAY
950 # mkdir takes a single argument on some systems.
951 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
959 # With Setjmp/Longjmp based exception handling.
960 AC_ARG_ENABLE(sjlj-exceptions,
961 [ --enable-sjlj-exceptions
962 arrange to use setjmp/longjmp exception handling],
963 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
964 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
965 [Define 0/1 to force the choice for exception handling model.])])
967 AC_CHECK_LIB(unwind, main, use_libunwind_default=yes, use_libunwind_default=no)
968 # Use libunwind based exception handling.
969 AC_ARG_ENABLE(libunwind-exceptions,
970 [ --enable-libunwind-exceptions force use libunwind for exceptions],
971 use_libunwind_exceptions=$enableval,
972 use_libunwind_exceptions=$use_libunwind_default)
973 if test x"$use_libunwind_exceptions" = xyes; then
974 AC_DEFINE(USE_LIBUNWIND_EXCEPTIONS, 1,
975 [Define if gcc should use -lunwind.])
978 # --------------------------------------------------------
979 # Build, host, and target specific configuration fragments
980 # --------------------------------------------------------
985 build_install_headers_dir=install-headers-tar
992 # Decode the host machine, then the target machine.
993 # For the host machine, we save the xm_file variable as host_xm_file;
994 # then we decode the target machine and forget everything else
995 # that came from the host machine.
996 for machine in $build $host $target; do
997 . ${srcdir}/config.gcc
1000 extra_objs="${host_extra_objs} ${extra_objs}"
1002 # Default the target-machine variables that were not explicitly set.
1003 if test x"$tm_file" = x
1004 then tm_file=$cpu_type/$cpu_type.h; fi
1006 if test x"$extra_headers" = x
1007 then extra_headers=; fi
1009 if test x$md_file = x
1010 then md_file=$cpu_type/$cpu_type.md; fi
1012 if test x$out_file = x
1013 then out_file=$cpu_type/$cpu_type.c; fi
1015 if test x"$tmake_file" = x
1016 then tmake_file=$cpu_type/t-$cpu_type
1019 if test x"$dwarf2" = xyes
1020 then tm_file="$tm_file tm-dwarf2.h"
1023 # Say what files are being used for the output code and MD file.
1024 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1025 echo "Using \`$srcdir/config/$md_file' as machine description file."
1027 # If any of the xm_file variables contain nonexistent files, warn
1028 # about them and drop them.
1031 for x in $build_xm_file; do
1032 if test -f $srcdir/config/$x
1034 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1040 for x in $host_xm_file; do
1041 if test -f $srcdir/config/$x
1043 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1049 for x in $xm_file; do
1050 if test -f $srcdir/config/$x
1052 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1058 for f in $tm_file; do
1061 if test $count = ax; then
1062 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1064 echo "Using the following target machine macro files:"
1065 for f in $tm_file; do
1066 echo " $srcdir/config/$f"
1070 if test x$need_64bit_hwint = xyes; then
1071 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1072 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1076 for f in $host_xm_file; do
1079 if test $count = a; then
1081 elif test $count = ax; then
1082 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1084 echo "Using the following host machine macro files:"
1085 for f in $host_xm_file; do
1086 echo " $srcdir/config/$f"
1089 echo "Using ${out_host_hook_obj} for host machine hooks."
1091 if test "$host_xm_file" != "$build_xm_file"; then
1093 for f in $build_xm_file; do
1096 if test $count = a; then
1098 elif test $count = ax; then
1099 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1101 echo "Using the following build machine macro files:"
1102 for f in $build_xm_file; do
1103 echo " $srcdir/config/$f"
1108 if test x$thread_file = x; then
1109 if test x$target_thread_file != x; then
1110 thread_file=$target_thread_file
1112 thread_file='single'
1116 if test x$enable___cxa_atexit = xyes || \
1117 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1118 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1119 [Define if you want to use __cxa_atexit, rather than atexit, to
1120 register C++ destructors for local statics and global objects.
1121 This is essential for fully standards-compliant handling of
1122 destructors, but requires __cxa_atexit in libc.])
1125 # Look for a file containing extra machine modes.
1126 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1127 extra_modes_file='$(srcdir)'/config/${extra_modes}
1128 AC_SUBST(extra_modes_file)
1129 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "$extra_modes",
1130 [Define to the name of a file containing a list of extra machine modes
1131 for this architecture.])
1132 AC_DEFINE(EXTRA_CC_MODES, 1,
1133 [Define if the target architecture needs extra machine modes to represent
1134 the results of comparisons.])
1137 # auto-host.h is the file containing items generated by autoconf and is
1138 # the first file included by config.h.
1139 # If host=build, it is correct to have bconfig include auto-host.h
1140 # as well. If host!=build, we are in error and need to do more
1141 # work to find out the build config parameters.
1142 if test x$host = x$build
1144 build_auto=auto-host.h
1147 # We create a subdir, then run autoconf in the subdir.
1148 # To prevent recursion we set host and build for the new
1149 # invocation of configure to the build for this invocation
1156 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1157 *) realsrcdir=../${srcdir};;
1159 saved_CFLAGS="${CFLAGS}"
1160 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1161 ${realsrcdir}/configure \
1162 --target=$target_alias --host=$build_alias --build=$build_alias
1163 CFLAGS="${saved_CFLAGS}"
1165 # We just finished tests for the build machine, so rename
1166 # the file auto-build.h in the gcc directory.
1167 mv auto-host.h ../auto-build.h
1170 build_auto=auto-build.h
1171 FORBUILD=../${build_subdir}
1175 tm_file="${tm_file} defaults.h"
1176 tm_p_file="${tm_p_file} tm-preds.h"
1177 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1178 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1179 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1180 # put this back in temporarily.
1181 xm_file="ansidecl.h ${xm_file}"
1187 # Get the version trigger filename from the toplevel
1188 if test "${with_gcc_version_trigger+set}" = set; then
1189 gcc_version_trigger=$with_gcc_version_trigger
1191 gcc_version_trigger=${srcdir}/version.c
1194 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1195 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1197 # Compile in configure arguments.
1198 if test -f configargs.h ; then
1199 # Being re-configured.
1200 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1201 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1203 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1205 cat > configargs.h <<EOF
1206 /* Generated automatically. */
1207 static const char configuration_arguments[] = "$gcc_config_arguments";
1208 static const char thread_model[] = "$thread_file";
1210 static const struct {
1211 const char *name, *value;
1212 } configure_default_options[] = $configure_default_options;
1216 # Internationalization
1218 VERSION="$gcc_version"
1222 ZW_GNU_GETTEXT_SISTER_DIR
1224 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1225 # -liconv on the link line twice.
1226 case "$LIBINTL" in *$LIBICONV*)
1230 # Windows32 Registry support for specifying GCC installation paths.
1231 AC_ARG_ENABLE(win32-registry,
1232 [ --disable-win32-registry
1233 disable lookup of installation paths in the
1234 Registry on Windows hosts
1235 --enable-win32-registry enable registry lookup (default)
1236 --enable-win32-registry=KEY
1237 use KEY instead of GCC version as the last portion
1238 of the registry key],,)
1240 win32 | pe | cygwin* | mingw32* | uwin*)
1241 AC_MSG_CHECKING(whether windows registry support is requested)
1242 if test "x$enable_win32_registry" != xno; then
1243 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1244 [Define to 1 if installation paths should be looked up in Windows32
1245 Registry. Ignored on non windows32 hosts.])
1247 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1252 # Check if user specified a different registry key.
1253 case "x${enable_win32_registry}" in
1256 gcc_cv_win32_registry_key="$VERSION"
1259 # no registry lookup.
1260 gcc_cv_win32_registry_key=''
1263 # user-specified key.
1264 gcc_cv_win32_registry_key="$enable_win32_registry"
1268 if test "x$enable_win32_registry" != xno; then
1269 AC_MSG_CHECKING(registry key on windows hosts)
1270 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1271 [Define to be the last portion of registry key on windows hosts.])
1272 AC_MSG_RESULT($gcc_cv_win32_registry_key)
1277 # Get an absolute path to the GCC top-level source directory
1278 holddir=`${PWDCMD-pwd}`
1280 topdir=`${PWDCMD-pwd}`
1283 # Conditionalize the makefile for this host machine.
1284 # Make-host contains the concatenation of all host makefile fragments
1285 # [there can be more than one]. This file is built by configure.frag.
1286 host_overrides=Make-host
1287 dep_host_xmake_file=
1288 for f in .. ${host_xmake_file}
1290 if test -f ${srcdir}/config/$f
1292 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
1296 # Conditionalize the makefile for this target machine.
1297 # Make-target contains the concatenation of all host makefile fragments
1298 # [there can be more than one]. This file is built by configure.frag.
1299 target_overrides=Make-target
1301 for f in .. ${tmake_file}
1303 if test -f ${srcdir}/config/$f
1305 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
1309 symbolic_link='ln -s'
1311 # If the host doesn't support symlinks, modify CC in
1312 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1313 # Otherwise, we can use "CC=$(CC)".
1315 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1317 cc_set_by_configure="\$(CC)"
1318 quoted_cc_set_by_configure="\$(CC)"
1319 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1320 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1323 if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1325 symbolic_link="cp -p"
1329 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1330 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1331 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1332 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1336 out_object_file=`basename $out_file .c`.o
1339 for f in $tm_file; do
1342 tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1344 tm_file_list="${tm_file_list} \$(srcdir)/$f" ;;
1345 *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
1350 for f in $tm_p_file; do
1353 tm_p_file_list="${tm_p_file_list} $f" ;;
1354 *) tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" ;;
1359 for f in $host_xm_file; do
1362 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1364 host_xm_file_list="${host_xm_file_list} $f" ;;
1366 host_xm_file_list="${host_xm_file_list} \$(srcdir)/$f" ;;
1367 *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1372 for f in $build_xm_file; do
1375 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1376 auto-build.h | auto-host.h )
1377 build_xm_file_list="${build_xm_file_list} $f" ;;
1379 host_xm_file_list="${host_xm_file_list} \$(srcdir)/$f" ;;
1380 *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1384 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1385 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1386 CROSS= AC_SUBST(CROSS)
1387 ALL=all.internal AC_SUBST(ALL)
1388 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1389 if test x$host != x$target
1391 CROSS="-DCROSS_COMPILE"
1393 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1394 case "$host","$target" in
1395 i?86-*-*,x86_64-*-* \
1396 | powerpc*-*-*,powerpc64*-*-*)
1397 CROSS="$CROSS -DNATIVE_CROSS" ;;
1399 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1400 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1401 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1404 # If this is a cross-compiler that does not
1405 # have its own set of headers then define
1408 # If this is using newlib, without having the headers available now,
1409 # then define inhibit_libc in LIBGCC2_CFLAGS.
1410 # This prevents libgcc2 from containing any code which requires libc
1413 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1414 test x$with_newlib = xyes ; } &&
1415 test "x$with_headers" = x ; then
1416 inhibit_libc=-Dinhibit_libc
1418 AC_SUBST(inhibit_libc)
1420 # When building gcc with a cross-compiler, we need to adjust things so
1421 # that the generator programs are still built with the native compiler.
1422 # Also, we cannot run fixincludes or fix-header.
1424 # These are the normal (build=host) settings:
1425 BUILD_PREFIX= AC_SUBST(BUILD_PREFIX)
1426 BUILD_PREFIX_1=ignore- AC_SUBST(BUILD_PREFIX_1)
1427 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1428 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1430 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1431 STMP_FIXPROTO=stmp-fixproto AC_SUBST(STMP_FIXPROTO)
1433 # And these apply if build != host, or we are generating coverage data
1434 if test x$build != x$host || test "x$coverage_flags" != x
1437 BUILD_PREFIX_1=build-
1438 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1440 if test "x$TARGET_SYSTEM_ROOT" = x; then
1446 # Expand extra_headers to include complete path.
1447 # This substitutes for lots of t-* files.
1449 if test "x$extra_headers" = x
1452 # Prepend ${srcdir}/config/${cpu_type}/ to every entry in extra_headers.
1453 for file in $extra_headers;
1455 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1459 # Add a definition of USE_COLLECT2 if system wants one.
1460 case $use_collect2 in
1461 no) use_collect2= ;;
1464 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1465 xm_defines="${xm_defines} USE_COLLECT2"
1469 # Identify the assembler which will work hand-in-glove with the newly
1470 # built GCC, so that we can examine its features. This is the assembler
1471 # which will be driven by the driver program.
1473 # If build != host, and we aren't building gas in-tree, we identify a
1474 # build->target assembler and hope that it will have the same features
1475 # as the host->target assembler we'll be using.
1476 AC_MSG_CHECKING(what assembler to use)
1479 gcc_cv_gas_major_version=
1480 gcc_cv_gas_minor_version=
1481 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1482 if test -x "$DEFAULT_ASSEMBLER"; then
1483 gcc_cv_as="$DEFAULT_ASSEMBLER"
1484 elif test -x "$AS"; then
1486 elif test -x as$host_exeext; then
1487 # Build using assembler in the current directory.
1488 gcc_cv_as=./as$host_exeext
1489 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1490 && test -f ../gas/Makefile; then
1491 # Single tree build which includes gas.
1493 _gcc_COMPUTE_GAS_VERSION
1494 rm -f as$host_exeext
1495 $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1496 in_tree_gas_is_elf=no
1497 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1498 || (grep 'obj_format = multi' ../gas/Makefile \
1499 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1501 in_tree_gas_is_elf=yes
1505 if test "x$gcc_cv_as" = x; then
1506 # Search the same directories that the installed compiler will
1507 # search. Else we may find the wrong assembler and lose. If we
1508 # do not find a suitable assembler binary, then try the user's
1511 # Also note we have to check MD_EXEC_PREFIX before checking the
1512 # user's path. Unfortunately, there is no good way to get at the
1513 # value of MD_EXEC_PREFIX here. So we do a brute force search
1514 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1515 # to be fixed as part of the make/configure rewrite too.
1517 if test "x$exec_prefix" = xNONE; then
1518 if test "x$prefix" = xNONE; then
1519 test_prefix=/usr/local
1524 test_prefix=$exec_prefix
1527 # If the loop below does not find an assembler, then use whatever
1528 # one we can find in the users's path.
1530 if test "x$program_prefix" != xNONE; then
1531 gcc_cv_as=${program_prefix}as$host_exeext
1533 gcc_cv_as=`echo as | sed ${program_transform_name}`$host_exeext
1536 test_dirs="$test_prefix/lib/gcc-lib/$target_alias/$gcc_version \
1537 $test_prefix/lib/gcc-lib/$target_alias \
1538 /usr/lib/gcc/$target_alias/$gcc_version \
1539 /usr/lib/gcc/$target_alias \
1540 $test_prefix/$target_alias/bin/$target_alias/$gcc_version \
1541 $test_prefix/$target_alias/bin"
1543 if test x$host = x$target; then
1544 test_dirs="$test_dirs \
1549 /bsd43/usr/lib/cmplrs/cc \
1550 /usr/cross64/usr/bin \
1551 /usr/lib/cmplrs/cc \
1552 /sysv/usr/lib/cmplrs/cc \
1553 /svr4/usr/lib/cmplrs/cc \
1557 for dir in $test_dirs; do
1558 if test -x $dir/as$host_exeext; then
1559 gcc_cv_as=$dir/as$host_exeext
1564 case $in_tree_gas in
1566 AC_MSG_RESULT("newly built gas")
1569 AC_MSG_RESULT($gcc_cv_as)
1573 # Identify the linker which will work hand-in-glove with the newly
1574 # built GCC, so that we can examine its features. This is the linker
1575 # which will be driven by the driver program.
1577 # If build != host, and we aren't building gas in-tree, we identify a
1578 # build->target linker and hope that it will have the same features
1579 # as the host->target linker we'll be using.
1580 AC_MSG_CHECKING(what linker to use)
1583 gcc_cv_gld_major_version=
1584 gcc_cv_gld_minor_version=
1585 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1586 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1587 if test -x "$DEFAULT_LINKER"; then
1588 gcc_cv_ld="$DEFAULT_LINKER"
1589 elif test -x "$LD"; then
1591 elif test -x collect-ld$host_exeext; then
1592 # Build using linker in the current directory.
1593 gcc_cv_ld=./collect-ld$host_exeext
1594 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1595 && test -f ../ld/Makefile; then
1596 # Single tree build which includes ld.
1598 in_tree_ld_is_elf=no
1599 if (grep 'EMUL = .*elf' ../ld/Makefile \
1600 || grep 'EMUL = .*linux' ../ld/Makefile) > /dev/null; then
1601 in_tree_ld_is_elf=yes
1603 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
1606 gcc_cv_gld_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1608 if test x$gcc_cv_gld_version != x; then
1613 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1614 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1616 rm -f collect-ld$host_exeext
1617 $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \
1621 if test "x$gcc_cv_ld" = x; then
1622 # Search the same directories that the installed compiler will
1623 # search. Else we may find the wrong linker and lose. If we
1624 # do not find a suitable linker binary, then try the user's
1627 # Also note we have to check MD_EXEC_PREFIX before checking the
1628 # user's path. Unfortunately, there is no good way to get at the
1629 # value of MD_EXEC_PREFIX here. So we do a brute force search
1630 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1631 # to be fixed as part of the make/configure rewrite too.
1633 if test "x$exec_prefix" = xNONE; then
1634 if test "x$prefix" = xNONE; then
1635 test_prefix=/usr/local
1640 test_prefix=$exec_prefix
1643 # If the loop below does not find an linker, then use whatever
1644 # one we can find in the users's path.
1646 if test "x$program_prefix" != xNONE; then
1647 gcc_cv_ld=${program_prefix}ld$host_exeext
1649 gcc_cv_ld=`echo ld | sed ${program_transform_name}`$host_exeext
1652 test_dirs="$test_prefix/lib/gcc-lib/$target_alias/$gcc_version \
1653 $test_prefix/lib/gcc-lib/$target_alias \
1654 /usr/lib/gcc/$target_alias/$gcc_version \
1655 /usr/lib/gcc/$target_alias \
1656 $test_prefix/$target_alias/bin/$target_alias/$gcc_version \
1657 $test_prefix/$target_alias/bin"
1659 if test x$host = x$target; then
1660 test_dirs="$test_dirs \
1665 /bsd43/usr/lib/cmplrs/cc \
1666 /usr/cross64/usr/bin \
1667 /usr/lib/cmplrs/cc \
1668 /sysv/usr/lib/cmplrs/cc \
1669 /svr4/usr/lib/cmplrs/cc \
1673 for dir in $test_dirs; do
1674 if test -x $dir/ld$host_exeext; then
1675 gcc_cv_ld=$dir/ld$host_exeext
1682 AC_MSG_RESULT("newly built ld")
1685 AC_MSG_RESULT($gcc_cv_ld)
1689 # Figure out what nm we will be using.
1690 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1691 AC_MSG_CHECKING(what nm to use)
1693 if test -x nm$host_exeext; then
1694 gcc_cv_nm=./nm$host_exeext
1695 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1696 && test -f ../binutils/Makefile; then
1697 # Single tree build which includes binutils.
1699 gcc_cv_nm=./nm$host_exeext
1700 rm -f nm$host_exeext
1701 $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1702 elif test "x$program_prefix" != xNONE; then
1703 gcc_cv_nm=${program_prefix}nm$host_exeext
1705 gcc_cv_nm=`echo nm | sed ${program_transform_name}`$host_exeext
1708 yes) AC_MSG_RESULT("newly built nm") ;;
1709 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1712 # Figure out what objdump we will be using.
1713 AC_MSG_CHECKING(what objdump to use)
1715 if test -x objdump$host_exeext; then
1716 gcc_cv_objdump=./objdump$host_exeext
1717 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1718 && test -f ../binutils/Makefile; then
1719 # Single tree build which includes binutils.
1721 gcc_cv_objdump=./objdump$host_exeext
1722 rm -f objdump$host_exeext
1723 $symbolic_link ../binutils/objdump$host_exeext \
1724 objdump$host_exeext 2>/dev/null
1725 elif test "x$program_prefix" != xNONE; then
1726 gcc_cv_objdump=${program_prefix}objdump$host_exeext
1728 gcc_cv_objdump=`echo objdump | \
1729 sed ${program_transform_name}`$host_exeext
1731 case $in_tree_objdump in
1732 yes) AC_MSG_RESULT("newly built objdump") ;;
1733 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
1736 # Figure out what assembler alignment features are present.
1737 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1741 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1742 [Define if your assembler supports .balign and .p2align.])])
1744 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1747 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1748 [Define if your assembler supports specifying the maximum number
1749 of bytes to skip when using the GAS .p2align command.])])
1751 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
1753 [conftest_label1: .word 0
1755 conftest_label2: .word 0
1757 [if test x$gcc_cv_nm != x; then
1758 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1759 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1760 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
1762 else gcc_cv_as_subsection_m1=yes
1764 rm -f conftest.nm1 conftest.nm2
1766 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1767 [Define if your assembler supports .subsection and .subsection -1 starts
1768 emitting at the beginning of your section.])])
1770 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
1773 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
1775 # .hidden needs to be supported in both the assembler and the linker,
1776 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
1777 # This is irritatingly difficult to feature test for; we have to check the
1778 # date string after the version number. If we've got an in-tree
1779 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
1781 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
1782 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
1787 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
1788 [if test $in_tree_ld = yes ; then
1790 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
1791 && test $in_tree_ld_is_elf = yes; then
1792 gcc_cv_ld_hidden=yes
1795 gcc_cv_ld_hidden=yes
1796 ld_ver=`$gcc_cv_ld --version 2>/dev/null | head -1`
1797 if echo "$ld_ver" | grep GNU > /dev/null; then
1799 ld_vers=`echo $ld_ver | sed -n \
1800 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1801 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1802 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1803 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1804 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1805 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
1806 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
1807 if test 0"$ld_date" -lt 20020404; then
1808 if test -n "$ld_date"; then
1809 # If there was date string, but was earlier than 2002-04-04, fail
1811 elif test -z "$ld_vers"; then
1812 # If there was no date string nor ld version number, something is wrong
1815 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
1816 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
1817 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
1818 test -z "$ld_vers_patch" && ld_vers_patch=0
1819 if test "$ld_vers_major" -lt 2; then
1821 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
1822 gcc_cv_ld_hidden="no"
1823 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
1831 mips-sgi-irix[[56]]*)
1832 if test x"$gnu_ld_flag" = x"no"; then
1833 # Even if using gas with .hidden support, the resulting object files
1834 # cannot be linked with the IRIX 5 and IRIX 6 O32 linkers. With
1835 # the IRIX 6 N32 and N64 linkers, the problem is that the linker
1836 # refuses to accept -call_shared (passed by default to the
1837 # linker) and -r (used to link the object file generated without
1838 # .hidden directives with one that hides symbols), so we also lose.
1845 libgcc_visibility=no
1846 AC_SUBST(libgcc_visibility)
1847 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
1848 libgcc_visibility=yes
1849 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1850 [Define if your assembler and linker support .hidden.])
1853 # Check if we have .[us]leb128, and support symbol arithmetic with it.
1854 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
1862 [# GAS versions before 2.11 do not support uleb128,
1863 # despite appearing to.
1864 # ??? There exists an elf-specific test that will crash
1865 # the assembler. Perhaps it's better to figure out whether
1866 # arbitrary sections are supported and try the test.
1867 as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
1868 if echo "$as_ver" | grep GNU > /dev/null; then
1870 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
1871 as_major=`echo $as_ver | sed 's/\..*//'`
1872 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
1874 if test $as_major -eq 2 && test $as_minor -lt 11
1876 else gcc_cv_as_leb128=yes
1879 [AC_DEFINE(HAVE_AS_LEB128, 1,
1880 [Define if your assembler supports .sleb128 and .uleb128.])])
1882 # GAS versions up to and including 2.11.0 may mis-optimize
1884 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
1892 .section .eh_frame,"aw",@progbits
1894 .4byte .LECIE1-.LSCIE1
1908 .4byte .LEFDE1-.LASFDE1
1910 .4byte .LASFDE1-__FRAME_BEGIN__
1918 [ cat > conftest.lit <<EOF
1919 0000 10000000 00000000 017a0001 781a0004 .........z..x...
1920 0010 01000000 12000000 18000000 00000000 ................
1921 0020 08000000 04080000 0044 .........D
1923 cat > conftest.big <<EOF
1924 0000 00000010 00000000 017a0001 781a0004 .........z..x...
1925 0010 00000001 00000012 00000018 00000000 ................
1926 0020 00000008 04000000 0844 .........D
1928 # If the assembler didn't choke, and we can objdump,
1929 # and we got the correct data, then succeed.
1930 if test x$gcc_cv_objdump != x \
1931 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
1932 | tail -3 > conftest.got \
1933 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
1934 || cmp conftest.big conftest.got > /dev/null 2>&1; }
1936 gcc_cv_as_eh_frame=yes
1937 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
1938 gcc_cv_as_eh_frame=buggy
1940 # Uh oh, what do we do now?
1941 gcc_cv_as_eh_frame=no
1944 if test $gcc_cv_as_eh_frame = buggy; then
1945 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
1946 [Define if your assembler mis-optimizes .eh_frame data.])
1949 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
1950 [elf,2,12,0], [--fatal-warnings],
1951 [.section .rodata.str, "aMS", @progbits, 1],,
1952 [AC_DEFINE(HAVE_GAS_SHF_MERGE, 1,
1953 [Define if your assembler supports marking sections with SHF_MERGE flag.])])
1955 # Thread-local storage - the check is heavily parametrized.
1964 .section ".tdata","awT",@progbits
1967 ldq $27,__tls_get_addr($29) !literal!1
1968 lda $16,foo($29) !tlsgd!1
1969 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
1970 ldq $27,__tls_get_addr($29) !literal!2
1971 lda $16,foo($29) !tlsldm!2
1972 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
1973 ldq $1,foo($29) !gotdtprel
1974 ldah $2,foo($29) !dtprelhi
1975 lda $3,foo($2) !dtprello
1976 lda $4,foo($29) !dtprel
1977 ldq $1,foo($29) !gottprel
1978 ldah $2,foo($29) !tprelhi
1979 lda $3,foo($2) !tprello
1980 lda $4,foo($29) !tprel'
1987 .section ".tdata","awT",@progbits
1991 leal foo@TLSGD(,%ebx,1), %eax
1992 leal foo@TLSLDM(%ebx), %eax
1993 leal foo@DTPOFF(%eax), %edx
1994 movl foo@GOTTPOFF(%ebx), %eax
1995 subl foo@GOTTPOFF(%ebx), %eax
1996 addl foo@GOTNTPOFF(%ebx), %eax
1997 movl foo@INDNTPOFF, %eax
1998 movl $foo@TPOFF, %eax
1999 subl $foo@TPOFF, %eax
2000 leal foo@NTPOFF(%ecx), %eax'
2006 .section ".tdata","awT",@progbits
2010 leaq foo@TLSGD(%rip), %rdi
2011 leaq foo@TLSLD(%rip), %rdi
2012 leaq foo@DTPOFF(%rax), %rdx
2013 movq foo@GOTTPOFF(%rip), %rax
2014 movq $foo@TPOFF, %rax'
2020 .section ".tdata","awT",@progbits
2023 addl r16 = @ltoff(@dtpmod(foo#)), gp
2024 addl r17 = @ltoff(@dtprel(foo#)), gp
2025 addl r18 = @ltoff(@tprel(foo#)), gp
2026 addl r19 = @dtprel(foo#), gp
2027 adds r21 = @dtprel(foo#), r13
2028 movl r23 = @dtprel(foo#)
2029 addl r20 = @tprel(foo#), gp
2030 adds r22 = @tprel(foo#), r13
2031 movl r24 = @tprel(foo#)'
2037 .section ".tdata","awT",@progbits
2045 addi 3,31,ld0@got@tlsgd
2047 addi 3,31,x1@got@tlsld
2050 addis 9,3,x2@dtprel@ha
2051 addi 9,9,x2@dtprel@l
2052 lwz 9,x3@got@tprel(31)
2055 addis 9,2,x2@tprel@ha
2056 addi 9,9,x2@tprel@l'
2063 .section ".tdata","awT",@progbits
2071 addi 3,2,ld0@got@tlsgd
2077 addi 3,2,x1@got@tlsld
2083 addis 9,3,x2@dtprel@ha
2084 addi 9,9,x2@dtprel@l
2087 ld 9,x3@got@dtprel(2)
2097 .section ".tdata","awT",@progbits
2106 l %r1,foo@GOTNTPOFF(%r12)
2107 l %r1,0(%r1):tls_load:foo
2108 bas %r14,0(%r1,%r13):tls_gdcall:foo
2109 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2116 .section ".tdata","awT",@progbits
2124 lg %r1,foo@GOTNTPOFF(%r12)
2125 larl %r1,foo@INDNTPOFF
2126 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2127 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2130 tls_as_opt="-m64 -Aesame"
2133 if test -z "$tls_first_major"; then
2134 : # If we don't have a check, assume no support.
2136 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2137 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt --fatal-warnings],
2139 [AC_DEFINE(HAVE_AS_TLS, 1,
2140 [Define if your assembler supports thread-local storage.])])
2143 # Target-specific assembler checks.
2146 # All TARGET_ABI_OSF targets.
2147 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2148 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2149 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2152 extbl $3, $2, $3 !lituse_bytoff!1
2153 ldq $2, a($29) !literal!1
2154 ldq $4, b($29) !literal!2
2155 ldq_u $3, 0($2) !lituse_base!1
2156 ldq $27, f($29) !literal!5
2157 jsr $26, ($27), f !lituse_jsr!5
2158 ldah $29, 0($26) !gpdisp!3
2159 lda $0, c($29) !gprel
2160 ldah $1, d($29) !gprelhigh
2161 lda $1, d($1) !gprellow
2162 lda $29, 0($29) !gpdisp!3],,
2163 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2164 [Define if your assembler supports explicit relocations.])])
2168 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2169 [.register %g2, #scratch],,
2170 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2171 [Define if your assembler supports .register.])])
2173 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2175 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2176 [Define if your assembler supports -relax option.])])
2178 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2179 gcc_cv_as_sparc_ua_pcrel,,
2187 .uaword %r_disp32(foo)],
2188 [if test x$gcc_cv_ld != x \
2189 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2190 gcc_cv_as_sparc_ua_pcrel=yes
2193 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2194 [Define if your assembler and linker support unaligned PC relative relocs.])
2196 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2197 gcc_cv_as_sparc_ua_pcrel_hidden,,
2202 .uaword %r_disp32(foo)
2203 .byte 0x32, 0x33, 0x34
2208 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2209 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2210 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2211 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2212 if $gcc_cv_objdump -R conftest 2> /dev/null \
2213 | grep 'DISP32' > /dev/null 2>&1; then
2216 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2220 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2221 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2222 ]) # unaligned pcrel relocs
2224 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2225 gcc_cv_as_sparc_offsetable_lo10,,
2228 or %g1, %lo(ab) + 12, %g1
2229 or %g1, %lo(ab + 12), %g1],
2230 [if test x$gcc_cv_objdump != x \
2231 && %gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2232 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2233 gcc_cv_as_offsetable_lo10=yes
2235 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2236 [Define if your assembler supports offsetable %lo().])])
2240 i[34567]86-*-* | x86_64-*-*)
2242 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2243 gcc_cv_as_ix86_filds_fists,
2244 [2,9,0],, [filds mem; fists mem],,
2245 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2246 [Define if your assembler uses the new HImode fild and fist notation.])])
2248 # This one is used unconditionally by i386.[ch]; it is to be defined
2249 # to 1 if the feature is present, 0 otherwise.
2250 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2251 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2257 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2258 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2259 [Define true if the assembler supports '.long foo@GOTOFF'.])
2263 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2264 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2266 addl r15 = @ltoffx(x#), gp
2268 ld8.mov r16 = [[r15]], x#],,
2269 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2270 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2276 *-*-aix) conftest_s=' .csect .text[PR]';;
2277 *) conftest_s=' .text';;
2279 conftest_s="$conftest_s
2282 gcc_GAS_CHECK_FEATURE([mfcr field support],
2283 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2285 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2286 [Define if your assembler supports mfcr field.])])
2290 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2291 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2292 [ lw $4,%gp_rel(foo)($4)],,
2293 [if test x$target_cpu_default = x
2294 then target_cpu_default=MASK_EXPLICIT_RELOCS
2295 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2300 # ??? Not all targets support dwarf2 debug_line, even within a version
2301 # of gas. Moreover, we need to emit a valid instruction to trigger any
2302 # info to the output file. So, as supported targets are added to gas 2.11,
2303 # add some instruction here to (also) show we expect this might work.
2304 # ??? Once 2.11 is released, probably need to add first known working
2305 # version to the per-target configury.
2307 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2308 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2309 | xstormy16*-*-* | cris-*-*)
2319 if test x"$insn" != x; then
2321 .file 1 \"conftest.s\"
2324 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2325 gcc_cv_as_dwarf2_debug_line,
2326 [elf,2,11,0],, [$conftest_s],
2327 [# ??? This fails with non-gnu grep. Maybe use objdump?
2328 if grep debug_line conftest.o > /dev/null 2>&1; then
2329 gcc_cv_as_dwarf2_debug_line=yes
2332 # The .debug_line file table must be in the exact order that
2333 # we specified the files, since these indices are also used
2334 # by DW_AT_decl_file. Approximate this test by testing if
2335 # the assembler bitches if the same index is assigned twice.
2336 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2337 gcc_cv_as_dwarf2_file_buggy,,,
2341 if test $gcc_cv_as_dwarf2_debug_line = yes \
2342 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2343 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2344 [Define if your assembler supports dwarf2 .file/.loc directives,
2345 and preserves file table indices exactly as given.])
2348 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2349 gcc_cv_as_gdwarf2_flag,
2350 [elf,2,11,0], [--gdwarf2], [$insn],,
2351 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2352 [Define if your assembler supports the --gdwarf2 option.])])
2354 gcc_GAS_CHECK_FEATURE([--gstabs option],
2355 gcc_cv_as_gstabs_flag,
2356 [elf,2,11,0], [--gstabs], [$insn],
2357 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2358 # and warns about it, but still exits successfully. So check for
2360 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2362 else gcc_cv_as_gstabs_flag=yes
2364 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2365 [Define if your assembler supports the --gstabs option.])])
2368 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2369 gcc_cv_ld_ro_rw_mix=unknown
2370 if test $in_tree_ld = yes ; then
2371 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2372 && test $in_tree_ld_is_elf = yes; then
2373 gcc_cv_ld_ro_rw_mix=read-write
2375 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2376 echo '.section myfoosect, "a"' > conftest1.s
2377 echo '.section myfoosect, "aw"' > conftest2.s
2378 echo '.byte 1' >> conftest2.s
2379 echo '.section myfoosect, "a"' > conftest3.s
2380 echo '.byte 0' >> conftest3.s
2381 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2382 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2383 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2384 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2385 conftest2.o conftest3.o > /dev/null 2>&1; then
2386 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2387 | sed -e '/myfoosect/!d' -e N`
2388 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2389 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2390 gcc_cv_ld_ro_rw_mix=read-only
2392 gcc_cv_ld_ro_rw_mix=read-write
2397 rm -f conftest.* conftest[123].*
2400 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2401 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2402 [Define if your linker links a mix of read-only
2403 and read-write sections into a read-write section.])
2405 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2407 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2408 gcc_cv_ld_eh_frame_hdr=no
2409 if test $in_tree_ld = yes ; then
2410 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2411 && test $in_tree_ld_is_elf = yes; then
2412 gcc_cv_ld_eh_frame_hdr=yes
2414 elif test x$gcc_cv_ld != x; then
2415 # Check if linker supports --eh-frame-hdr option
2416 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2417 gcc_cv_ld_eh_frame_hdr=yes
2420 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2421 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2422 [Define if your linker supports --eh-frame-hdr option.])
2424 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2426 AC_MSG_CHECKING(linker position independent executable support)
2428 if test $in_tree_ld = yes ; then
2429 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2430 && test $in_tree_ld_is_elf = yes; then
2433 elif test x$gcc_cv_ld != x; then
2434 # Check if linker supports -pie option
2435 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2439 if test x"$gcc_cv_ld_pie" = xyes; then
2440 AC_DEFINE(HAVE_LD_PIE, 1,
2441 [Define if your linker supports -pie option.])
2443 AC_MSG_RESULT($gcc_cv_ld_pie)
2445 # Miscellaneous target-specific checks.
2448 AC_MSG_CHECKING(whether libgloss uses STARTUP directives consistently)
2449 gcc_cv_mips_libgloss_startup=no
2450 gcc_cv_libgloss_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/libgloss
2451 if test "x$exec_prefix" = xNONE; then
2452 if test "x$prefix" = xNONE; then
2453 test_prefix=/usr/local
2458 test_prefix=$exec_prefix
2460 for f in $gcc_cv_libgloss_srcdir/mips/idt.ld $test_prefix/$target_alias/lib/idt.ld
2462 if grep '^STARTUP' $f > /dev/null 2>&1; then
2463 gcc_cv_mips_libgloss_startup=yes
2467 if test x"$gcc_cv_mips_libgloss_startup" = xyes; then
2468 AC_DEFINE(HAVE_MIPS_LIBGLOSS_STARTUP_DIRECTIVES, 1,
2469 [Define if your MIPS libgloss linker scripts consistently include STARTUP directives.])
2471 AC_MSG_RESULT($gcc_cv_mips_libgloss_startup)
2475 if test x$with_sysroot = x && test x$host = x$target \
2476 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2477 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2478 [Define to PREFIX/include if cpp should also search that directory.])
2481 # Figure out what language subdirectories are present.
2482 # Look if the user specified --enable-languages="..."; if not, use
2483 # the environment variable $LANGUAGES if defined. $LANGUAGES might
2485 # NB: embedded tabs in this IF block -- do not untabify
2486 if test x"${enable_languages+set}" != xset; then
2487 if test x"${LANGUAGES+set}" = xset; then
2488 enable_languages="${LANGUAGES}"
2489 AC_MSG_WARN([setting LANGUAGES is deprecated, use --enable-languages instead])
2492 enable_languages=all
2495 if test x"${enable_languages}" = x \
2496 || test x"${enable_languages}" = xyes;
2498 AC_MSG_ERROR([--enable-languages needs at least one language argument])
2501 enable_languages=`echo "${enable_languages}" | sed -e 's/[[ ,]][[ ,]]*/,/g' -e 's/,$//'`
2503 # First scan to see if an enabled language requires some other language.
2504 # We assume that a given config-lang.in will list all the language
2505 # front ends it requires, even if some are required indirectly.
2506 for lang in ${srcdir}/*/config-lang.in ..
2511 # The odd quoting in the next line works around
2512 # an apparent bug in bash 1.12 on linux.
2514 ${srcdir}/[*]/config-lang.in)
2517 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
2518 this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^ ]*\).*$,\1,p' $lang`
2519 for other in $this_lang_requires
2521 case ,${enable_languages}, in
2527 enable_languages="$enable_languages,$other"
2536 expected_languages=`echo ,${enable_languages}, | sed -e 's:,: :g' -e 's: *: :g' -e 's: *: :g' -e 's:^ ::' -e 's: $::'`
2539 for lang in ${srcdir}/*/config-lang.in ..
2543 # The odd quoting in the next line works around
2544 # an apparent bug in bash 1.12 on linux.
2546 ${srcdir}/[*]/config-lang.in) ;;
2548 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
2549 this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^ ]*\).*$,\1,p' $lang`
2550 build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^ ]*\).*$,\1,p' $lang`
2551 if test "x$lang_alias" = x
2553 echo "$lang doesn't set \$language." 1>&2
2556 case ${build_by_default},${enable_languages}, in
2557 *,$lang_alias,*) add_this_lang=yes ;;
2558 no,*) add_this_lang=no ;;
2559 *,all,*) add_this_lang=yes ;;
2560 *) add_this_lang=no ;;
2562 found_languages="${found_languages} ${lang_alias}"
2563 if test x"${add_this_lang}" = xyes; then
2565 ${srcdir}/ada/config-lang.in)
2566 if test x$have_gnat = xyes ; then
2567 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
2571 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
2581 for expected_language in ${expected_languages} ..
2583 if test "${expected_language}" != ..; then
2584 missing_language="${expected_language}"
2585 if test "${expected_language}" = "c" \
2586 || test "${expected_language}" = "all"; then
2589 for found_language in ${found_languages} ..
2591 if test "${found_language}" != ..; then
2592 if test "${expected_language}" = "${found_language}"; then
2597 if test "x${missing_language}" != x; then
2598 missing_languages="${missing_languages} ${missing_language}"
2603 if test "x$missing_languages" != x; then
2605 The following requested languages were not found:${missing_languages}
2606 The following languages were available: c${found_languages}])
2609 # Make gthr-default.h if we have a thread file.
2611 if test $thread_file != single; then
2612 rm -f gthr-default.h
2613 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
2614 gthread_flags=-DHAVE_GTHR_DEFAULT
2616 AC_SUBST(gthread_flags)
2618 # Find out what GC implementation we want, or may, use.
2620 [ --with-gc={simple,page} choose the garbage collection mechanism to use
2627 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2632 echo "Using $GGC for garbage collection."
2634 # Use the system's zlib library.
2636 zlibinc="-I\$(srcdir)/../zlib"
2637 AC_ARG_WITH(system-zlib,
2638 [ --with-system-zlib use installed libz],
2645 dnl Very limited version of automake's enable-maintainer-mode
2647 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2648 dnl maintainer-mode is disabled by default
2649 AC_ARG_ENABLE(maintainer-mode,
2650 [ --enable-maintainer-mode
2651 enable make rules and dependencies not useful
2652 (and sometimes confusing) to the casual installer],
2653 maintainer_mode=$enableval,
2656 AC_MSG_RESULT($maintainer_mode)
2658 if test "$maintainer_mode" = "yes"; then
2665 # Make empty files to contain the specs and options for each language.
2666 # Then add #include lines to for a compiler that has specs and/or options.
2671 for subdir in . $subdirs
2673 if test -f $srcdir/$subdir/lang.opt; then
2674 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
2676 if test -f $srcdir/$subdir/lang-specs.h; then
2677 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
2679 if test -f $srcdir/$subdir/$subdir-tree.def; then
2680 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
2684 # These (without "all_") are set in each config-lang.in.
2685 # `language' must be a single word so is spelled singularly.
2690 all_outputs='Makefile fixinc/Makefile gccbug mklibgcc mkheaders'
2691 # List of language makefile fragments.
2693 # Files for gengtype
2694 all_gtfiles="$target_gtfiles"
2695 # Files for gengtype with language
2696 all_gtfiles_files_langs=
2697 all_gtfiles_files_files=
2699 # Add the language fragments.
2700 # Languages are added via two mechanisms. Some information must be
2701 # recorded in makefile variables, these are defined in config-lang.in.
2702 # We accumulate them and plug them into the main Makefile.
2703 # The other mechanism is a set of hooks for each of the main targets
2704 # like `clean', `install', etc.
2706 language_fragments="Make-lang"
2707 language_hooks="Make-hooks"
2709 for s in .. $subdirs
2719 . ${srcdir}/$s/config-lang.in
2720 if test "x$language" = x
2722 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
2725 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
2726 if test -f ${srcdir}/$s/Makefile.in
2727 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
2729 all_languages="$all_languages $language"
2730 if test "x$boot_language" = xyes
2732 all_boot_languages="$all_boot_languages $language"
2734 all_compilers="$all_compilers $compilers"
2735 all_stagestuff="$all_stagestuff $stagestuff"
2736 all_outputs="$all_outputs $outputs"
2737 all_gtfiles="$all_gtfiles $gtfiles"
2738 for f in .. $gtfiles
2742 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
2743 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
2749 # Pick up gtfiles for c
2752 . ${srcdir}/c-config-lang.in
2753 all_gtfiles="$all_gtfiles $gtfiles"
2754 for f in .. $gtfiles
2758 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
2759 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
2764 for language in .. $all_languages
2766 if test $language != ".."
2768 check_languages="$check_languages check-$language"
2772 # Since we can't use `::' targets, we link each language in
2773 # with a set of hooks, reached indirectly via lang.${target}.
2777 target_list="all.build all.cross start.encap rest.encap tags \
2778 info dvi generated-manpages \
2779 install-normal install-common install-info install-man \
2781 mostlyclean clean distclean extraclean maintainer-clean \
2782 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
2783 for t in $target_list
2786 for lang in .. $all_languages
2788 if test $lang != ".."; then
2792 echo "lang.$t: $x" >> Make-hooks
2797 echo "dir ." > .gdbinit
2798 echo "dir ${srcdir}" >> .gdbinit
2799 if test x$gdb_needs_out_file_path = xyes
2801 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
2803 if test "x$subdirs" != x; then
2806 echo "dir ${srcdir}/$s" >> .gdbinit
2809 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
2811 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
2812 # absolute path for gcc_tooldir based on inserting the number of up-directory
2813 # movements required to get from $(exec_prefix) to $(prefix) into the basic
2814 # $(libsubdir)/@(unlibsubdir) based path.
2815 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
2816 # make and thus we'd get different behavior depending on where we built the
2818 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
2819 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
2821 changequote(<<, >>)dnl
2822 # An explanation of the sed strings:
2823 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
2824 # -e 's|/$||' match a trailing forward slash and eliminates it
2825 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
2826 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
2828 # (*) Note this pattern overwrites the first character of the string
2829 # with a forward slash if one is not already present. This is not a
2830 # problem because the exact names of the sub-directories concerned is
2831 # unimportant, just the number of them matters.
2833 # The practical upshot of these patterns is like this:
2835 # prefix exec_prefix result
2836 # ------ ----------- ------
2838 # /foo/ /foo/bar ../
2839 # /foo /foo/bar/ ../
2840 # /foo/ /foo/bar/ ../
2841 # /foo /foo/bar/ugg ../../
2844 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
2845 changequote([, ])dnl
2847 AC_SUBST(gcc_tooldir)
2850 # Find a directory in which to install a shared libgcc.
2852 AC_ARG_ENABLE(version-specific-runtime-libs,
2853 [ --enable-version-specific-runtime-libs
2854 specify that runtime libraries should be
2855 installed in a compiler-specific directory])
2857 AC_ARG_WITH(slibdir,
2858 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
2859 slibdir="$with_slibdir",
2860 if test "${enable_version_specific_runtime_libs+set}" = set; then
2861 slibdir='$(libsubdir)'
2862 elif test "$host" != "$target"; then
2863 slibdir='$(build_tooldir)/lib'
2869 objdir=`${PWDCMD-pwd}`
2872 # Process the language and host/target makefile fragments.
2873 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
2875 # Substitute configuration variables
2878 AC_SUBST(all_boot_languages)
2879 AC_SUBST(all_compilers)
2880 AC_SUBST(all_gtfiles)
2881 AC_SUBST(all_gtfiles_files_langs)
2882 AC_SUBST(all_gtfiles_files_files)
2883 AC_SUBST(all_lang_makefiles)
2884 AC_SUBST(all_languages)
2885 AC_SUBST(all_stagestuff)
2886 AC_SUBST(build_exeext)
2887 AC_SUBST(build_install_headers_dir)
2888 AC_SUBST(build_xm_file_list)
2889 AC_SUBST(build_xm_file)
2890 AC_SUBST(build_xm_defines)
2891 AC_SUBST(check_languages)
2892 AC_SUBST(cc_set_by_configure)
2893 AC_SUBST(quoted_cc_set_by_configure)
2894 AC_SUBST(cpp_install_dir)
2895 AC_SUBST(dep_host_xmake_file)
2896 AC_SUBST(dep_tmake_file)
2897 AC_SUBST(extra_headers_list)
2898 AC_SUBST(extra_objs)
2899 AC_SUBST(extra_parts)
2900 AC_SUBST(extra_passes)
2901 AC_SUBST(extra_programs)
2902 AC_SUBST(float_h_file)
2903 AC_SUBST(gcc_config_arguments)
2904 AC_SUBST(gcc_gxx_include_dir)
2905 AC_SUBST(libstdcxx_incdir)
2906 AC_SUBST(gcc_version)
2907 AC_SUBST(gcc_version_full)
2908 AC_SUBST(gcc_version_trigger)
2909 AC_SUBST(host_exeext)
2910 AC_SUBST(host_extra_gcc_objs)
2911 AC_SUBST(host_xm_file_list)
2912 AC_SUBST(host_xm_file)
2913 AC_SUBST(host_xm_defines)
2914 AC_SUBST(out_host_hook_obj)
2916 AC_SUBST(lang_opt_files)
2917 AC_SUBST(lang_specs_files)
2918 AC_SUBST(lang_tree_files)
2919 AC_SUBST(local_prefix)
2921 AC_SUBST(objc_boehm_gc)
2923 AC_SUBST(out_object_file)
2924 AC_SUBST(stage_prefix_set_by_configure)
2925 AC_SUBST(quoted_stage_prefix_set_by_configure)
2926 AC_SUBST(symbolic_link)
2927 AC_SUBST(thread_file)
2928 AC_SUBST(tm_file_list)
2930 AC_SUBST(tm_defines)
2931 AC_SUBST(tm_p_file_list)
2934 AC_SUBST(xm_defines)
2935 AC_SUBST(target_alias)
2936 AC_SUBST(c_target_objs)
2937 AC_SUBST(cxx_target_objs)
2938 AC_SUBST(target_cpu_default)
2940 AC_SUBST_FILE(target_overrides)
2941 AC_SUBST_FILE(host_overrides)
2942 AC_SUBST_FILE(language_fragments)
2943 AC_SUBST_FILE(language_hooks)
2945 # Echo that links are built
2946 if test x$host = x$target
2954 if test x$host != x$build
2956 str3=" on a $build system"
2959 if test "x$str2" != x || test "x$str3" != x
2964 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
2966 if test "x$str2" != x || test "x$str3" != x
2968 echo " ${str2}${str3}." 1>&2
2971 # Configure the subdirectories
2972 # AC_CONFIG_SUBDIRS($subdirs)
2974 # Create the Makefile
2975 # and configure language subdirectories
2976 AC_OUTPUT($all_outputs,
2978 case x$CONFIG_HEADERS in
2979 xauto-host.h:config.in)
2982 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
2983 # bootstrapping and the installation procedure can still use
2984 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
2985 # FLAGS_TO_PASS has been modified to solve the problem there.
2986 # This is virtually a duplicate of what happens in configure.lang; we do
2987 # an extra check to make sure this only happens if ln -s can be used.
2988 if test "$symbolic_link" = "ln -s"; then
2989 for d in .. ${subdirs} fixinc ; do
2990 if test $d != ..; then
2991 STARTDIR=`${PWDCMD-pwd}`
2993 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
2996 $symbolic_link ../$t $t 2>/dev/null
3004 symbolic_link='$symbolic_link'