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Apply Phillip Blundell's patch to distinguish between new and old binutils. 

From-SVN: r28687
This commit is contained in:
Philip Blundell 1999-08-12 09:41:02 +00:00 committed by Nick Clifton
parent 305f30038b
commit 078e19a409
8 changed files with 229 additions and 140 deletions
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3
gcc/config/arm/linux-aout.h
View File

@ -35,7 +35,8 @@ Boston, MA 02111-1307, USA. */
#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
"-Dunix -Darm -Dlinux -Asystem(unix) -Asystem(posix) -Acpu(arm) -Amachine(arm)"
"-Dunix -D__arm__ -Dlinux \
-Asystem(unix) -Asystem(posix) -Acpu(arm) -Amachine(arm)"
#undef LIB_SPEC
#define LIB_SPEC \

53
gcc/config/arm/linux-elf.h
View File

@ -25,13 +25,34 @@ Boston, MA 02111-1307, USA. */
/* We have libgcc2. */
#define HAVE_ATEXIT
/* Default is to use APCS-32 mode. */
#ifndef SUBTARGET_DEFAULT_APCS26
#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_SHORT_BYTE)
#define SUBTARGET_EXTRA_LINK_SPEC \
/* Default is to use APCS-32 mode. */
# define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_SHORT_BYTE)
# ifdef SUBTARGET_OLD_LINKER
# define SUBTARGET_EXTRA_LINK_SPEC \
" %{mapcs-26:-m elf32arm26} %{!mapcs-26:-m elf32arm}"
#define SUBTARGET_EXTRA_ASM_SPEC \
# else /* new linker */
# define SUBTARGET_EXTRA_LINK_SPEC \
" %{mapcs-26:-m armelf_linux26} %{!mapcs-26:-m armelf_linux} -p"
# endif
# define SUBTARGET_EXTRA_ASM_SPEC \
" %{mapcs-26:-mapcs-26} %(!mapcs-26:-mapcs-32}"
# define MULTILIB_DEFAULTS \
{ "mlittle-endian", "mhard-float", "mapcs-32", "mno-thumb-interwork" }
# define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
#else /* default is APCS-26 */
# define TARGET_DEFAULT (ARM_FLAG_SHORT_BYTE)
# ifdef SUBTARGET_OLD_LINKER
# define SUBTARGET_LINK_SPEC \
" %{mapcs-32:-m elf32arm} %{!mapcs-32:-m elf32arm26}"
# else /* new linker */
# define SUBTARGET_LINK_SPEC \
" %{mapcs-32:-m armelf_linux} %{!mapcs-32:-m armelf_linux26} -p"
# endif
# define SUBTARGET_EXTRA_ASM_SPEC \
" %{mapcs-32:-mapcs-32} %(!mapcs-32:-mapcs-26}"
# define MULTILIB_DEFAULTS \
{ "mlittle-endian", "mhard-float", "mapcs-26", "mno-thumb-interwork" }
#endif
/* This was defined in linux.h. Define it here also. */
@ -45,7 +66,8 @@ Boston, MA 02111-1307, USA. */
#define LIB_SPEC \
"%{shared: -lc} \
%{!shared: %{pthread:-lpthread} \
%{profile:-lc_p} %{!profile: -lc}}"
%{profile:-lc_p} %{!profile: -lc}}"
#define LIBGCC_SPEC "%{msoft-float:-lfloat} -lgcc"
@ -81,14 +103,17 @@ Boston, MA 02111-1307, USA. */
%{mbig-endian:-EB}" \
SUBTARGET_EXTRA_LINK_SPEC
#define ASM_SPEC "%{mbig-endian:-EB} \
%{mcpu=*:-m%*} %{march=*:-m%*} \
%{mthumb-interwork:-mthumb-interwork} \
%{msoft-float:-mno-fpu} \
%{mapcs-float:-mfloat}" \
SUBTARGET_EXTRA_ASM_SPEC
#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
"-Dunix -Darm -Dlinux -Asystem(unix) -Asystem(posix) -Acpu(arm) \
-Amachine(arm) -D__ELF__ -Darm_elf"
#ifndef SUBTARGET_DEFAULT_APCS26
#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
#endif
"-Dunix -D__arm__ -Dlinux -D__ELF__ \
-Asystem(unix) -Asystem(posix) -Acpu(arm) -Amachine(arm)"
/* Allow #sccs in preprocessor. */
#define SCCS_DIRECTIVE
@ -236,10 +261,6 @@ const_section () \
#include "arm/elf.h"
#include "arm/linux-gas.h"
#ifndef SUBTARGET_DEFAULT_APCS26
/* On 32-bit machine it is always safe to assume we have the "new"
floating point system.
?? Make this happen for all targets when NWFPE is better established. */
/* NWFPE always understands FPA instructions. */
#undef FP_DEFAULT
#define FP_DEFAULT FP_SOFT3
#endif

18
gcc/config/arm/linux-elf26.h
View File

@ -1,6 +1,7 @@
/* Definitions for 26-bit ARM running Linux-based GNU systems using ELF
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by Philip Blundell <philb@gnu.org>
/* Definitions for ARM running Linux-based GNU systems
using ELF and 26-bit APCS.
Copyright (C) 1999 Free Software Foundation, Inc.
Contributed by Philip Blundell <Philip.Blundell@pobox.com>
This file is part of GNU CC.
@ -19,14 +20,5 @@ along with this program; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Tell linux-elf.h to default to 26-bit mode. */
#define SUBTARGET_DEFAULT_APCS26
#define SUBTARGET_LINK_SPEC \
" %{mapcs-32:-m elf32arm} %{!mapcs-32:-m elf32arm26}"
#define SUBTARGET_EXTRA_ASM_SPEC \
" %{mapcs-32:-mapcs-32} %(!mapcs-32:-mapcs-26}"
#define TARGET_DEFAULT (ARM_FLAG_SHORT_BYTE)
#include "arm/linux-elf.h"

27
gcc/config/arm/linux-oldld.h Normal file
View File

@ -0,0 +1,27 @@
/* Definitions for ARM running Linux-based GNU systems
using ELF with old binutils.
Copyright (C) 1999 Free Software Foundation, Inc.
Contributed by Philip Blundell <Philip.Blundell@pobox.com>
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Unfortunately, owing to various historical accidents, version 2.9.4
and newer of GNU binutils are not quite compatible with the old
(2.9.1-based) toolset. This tells linux-elf.h to generate specs
appropriate for the older versions. */
#define SUBTARGET_OLD_LINKER

9
gcc/config/arm/t-linux
View File

@ -13,10 +13,15 @@ LIBGCC1 = libgcc1-asm.a
LIB1ASMSRC = arm/lib1funcs.asm
LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx
MULTILIB_OPTIONS = mhard-float/msoft-float
MULTILIB_DIRNAMES = hard-float soft-float
# If you want to build both APCS variants as multilib options this is how
# to do it.
#MULTILIB_OPTIONS = mapcs-32/apcs-26
#MULTILIB_DIRNAMES = apcs-32 apcs-26
# MULTILIB_OPTIONS += mapcs-32/mapcs-26
# MULTILIB_DIRNAMES += apcs-32 apcs-26
EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o
LIBGCC = stmp-multilib
INSTALL_LIBGCC = install-multilib

212
gcc/configure vendored
View File

@ -3178,15 +3178,31 @@ for machine in $build $host $target; do
tmake_file=arm/t-linux
gnu_ld=yes
;;
arm*-*-linux-gnuoldld*) # ARM GNU/Linux with old ELF linker
xm_file=arm/xm-linux.h
xmake_file=x-linux
tm_file="arm/linux-oldld.h arm/linux-elf.h"
case $machine in
armv2*-*-*)
tm_file="arm/linux-elf26.h $tm_file"
;;
esac
tmake_file="t-linux arm/t-linux"
extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
gnu_ld=yes
case x${enable_threads} in
x | xyes | xpthreads | xposix)
thread_file='posix'
;;
esac
;;
arm*-*-linux-gnu*) # ARM GNU/Linux with ELF
xm_file=arm/xm-linux.h
xmake_file=x-linux
tm_file="arm/linux-elf.h"
case $machine in
armv2*-*-*)
tm_file=arm/linux-elf26.h
;;
*)
tm_file=arm/linux-elf.h
tm_file="arm/linux-elf26.h $tm_file"
;;
esac
tmake_file="t-linux arm/t-linux"
@ -6156,7 +6172,7 @@ fi
echo $ac_n "checking for strerror in -lcposix""... $ac_c" 1>&6
echo "configure:6160: checking for strerror in -lcposix" >&5
echo "configure:6176: checking for strerror in -lcposix" >&5
ac_lib_var=`echo cposix'_'strerror | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
@ -6164,7 +6180,7 @@ else
ac_save_LIBS="$LIBS"
LIBS="-lcposix $LIBS"
cat > conftest.$ac_ext <<EOF
#line 6168 "configure"
#line 6184 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
@ -6175,7 +6191,7 @@ int main() {
strerror()
; return 0; }
EOF
if { (eval echo configure:6179: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:6195: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
@ -6198,12 +6214,12 @@ fi
echo $ac_n "checking for working const""... $ac_c" 1>&6
echo "configure:6202: checking for working const" >&5
echo "configure:6218: checking for working const" >&5
if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6207 "configure"
#line 6223 "configure"
#include "confdefs.h"
int main() {
@ -6252,7 +6268,7 @@ ccp = (char const *const *) p;
; return 0; }
EOF
if { (eval echo configure:6256: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
if { (eval echo configure:6272: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
ac_cv_c_const=yes
else
@ -6273,21 +6289,21 @@ EOF
fi
echo $ac_n "checking for inline""... $ac_c" 1>&6
echo "configure:6277: checking for inline" >&5
echo "configure:6293: checking for inline" >&5
if eval "test \"`echo '$''{'ac_cv_c_inline'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
ac_cv_c_inline=no
for ac_kw in inline __inline__ __inline; do
cat > conftest.$ac_ext <<EOF
#line 6284 "configure"
#line 6300 "configure"
#include "confdefs.h"
int main() {
} $ac_kw foo() {
; return 0; }
EOF
if { (eval echo configure:6291: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
if { (eval echo configure:6307: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
ac_cv_c_inline=$ac_kw; break
else
@ -6313,12 +6329,12 @@ EOF
esac
echo $ac_n "checking for off_t""... $ac_c" 1>&6
echo "configure:6317: checking for off_t" >&5
echo "configure:6333: checking for off_t" >&5
if eval "test \"`echo '$''{'ac_cv_type_off_t'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6322 "configure"
#line 6338 "configure"
#include "confdefs.h"
#include <sys/types.h>
#if STDC_HEADERS
@ -6346,12 +6362,12 @@ EOF
fi
echo $ac_n "checking for size_t""... $ac_c" 1>&6
echo "configure:6350: checking for size_t" >&5
echo "configure:6366: checking for size_t" >&5
if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6355 "configure"
#line 6371 "configure"
#include "confdefs.h"
#include <sys/types.h>
#if STDC_HEADERS
@ -6381,19 +6397,19 @@ fi
# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
# for constant arguments. Useless!
echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
echo "configure:6385: checking for working alloca.h" >&5
echo "configure:6401: checking for working alloca.h" >&5
if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6390 "configure"
#line 6406 "configure"
#include "confdefs.h"
#include <alloca.h>
int main() {
char *p = alloca(2 * sizeof(int));
; return 0; }
EOF
if { (eval echo configure:6397: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:6413: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
ac_cv_header_alloca_h=yes
else
@ -6414,12 +6430,12 @@ EOF
fi
echo $ac_n "checking for alloca""... $ac_c" 1>&6
echo "configure:6418: checking for alloca" >&5
echo "configure:6434: checking for alloca" >&5
if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6423 "configure"
#line 6439 "configure"
#include "confdefs.h"
#ifdef __GNUC__
@ -6447,7 +6463,7 @@ int main() {
char *p = (char *) alloca(1);
; return 0; }
EOF
if { (eval echo configure:6451: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:6467: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
ac_cv_func_alloca_works=yes
else
@ -6479,12 +6495,12 @@ EOF
echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
echo "configure:6483: checking whether alloca needs Cray hooks" >&5
echo "configure:6499: checking whether alloca needs Cray hooks" >&5
if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6488 "configure"
#line 6504 "configure"
#include "confdefs.h"
#if defined(CRAY) && ! defined(CRAY2)
webecray
@ -6509,12 +6525,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
if test $ac_cv_os_cray = yes; then
for ac_func in _getb67 GETB67 getb67; do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:6513: checking for $ac_func" >&5
echo "configure:6529: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6518 "configure"
#line 6534 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -6537,7 +6553,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:6541: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:6557: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -6564,7 +6580,7 @@ done
fi
echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
echo "configure:6568: checking stack direction for C alloca" >&5
echo "configure:6584: checking stack direction for C alloca" >&5
if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -6572,7 +6588,7 @@ else
ac_cv_c_stack_direction=0
else
cat > conftest.$ac_ext <<EOF
#line 6576 "configure"
#line 6592 "configure"
#include "confdefs.h"
find_stack_direction ()
{
@ -6591,7 +6607,7 @@ main ()
exit (find_stack_direction() < 0);
}
EOF
if { (eval echo configure:6595: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:6611: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
ac_cv_c_stack_direction=1
else
@ -6616,17 +6632,17 @@ for ac_hdr in unistd.h
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
echo "configure:6620: checking for $ac_hdr" >&5
echo "configure:6636: checking for $ac_hdr" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6625 "configure"
#line 6641 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:6630: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:6646: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -6655,12 +6671,12 @@ done
for ac_func in getpagesize
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:6659: checking for $ac_func" >&5
echo "configure:6675: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6664 "configure"
#line 6680 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -6683,7 +6699,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:6687: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:6703: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -6708,7 +6724,7 @@ fi
done
echo $ac_n "checking for working mmap""... $ac_c" 1>&6
echo "configure:6712: checking for working mmap" >&5
echo "configure:6728: checking for working mmap" >&5
if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -6716,7 +6732,7 @@ else
ac_cv_func_mmap_fixed_mapped=no
else
cat > conftest.$ac_ext <<EOF
#line 6720 "configure"
#line 6736 "configure"
#include "confdefs.h"
/* Thanks to Mike Haertel and Jim Avera for this test.
@ -6856,7 +6872,7 @@ main()
}
EOF
if { (eval echo configure:6860: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:6876: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
ac_cv_func_mmap_fixed_mapped=yes
else
@ -6884,17 +6900,17 @@ unistd.h sys/param.h
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
echo "configure:6888: checking for $ac_hdr" >&5
echo "configure:6904: checking for $ac_hdr" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6893 "configure"
#line 6909 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:6898: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:6914: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -6924,12 +6940,12 @@ done
strdup __argz_count __argz_stringify __argz_next
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:6928: checking for $ac_func" >&5
echo "configure:6944: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6933 "configure"
#line 6949 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -6952,7 +6968,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:6956: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:6972: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -6981,12 +6997,12 @@ done
for ac_func in stpcpy
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:6985: checking for $ac_func" >&5
echo "configure:7001: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 6990 "configure"
#line 7006 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -7009,7 +7025,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:7013: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7029: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -7043,19 +7059,19 @@ EOF
if test $ac_cv_header_locale_h = yes; then
echo $ac_n "checking for LC_MESSAGES""... $ac_c" 1>&6
echo "configure:7047: checking for LC_MESSAGES" >&5
echo "configure:7063: checking for LC_MESSAGES" >&5
if eval "test \"`echo '$''{'am_cv_val_LC_MESSAGES'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 7052 "configure"
#line 7068 "configure"
#include "confdefs.h"
#include <locale.h>
int main() {
return LC_MESSAGES
; return 0; }
EOF
if { (eval echo configure:7059: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7075: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
am_cv_val_LC_MESSAGES=yes
else
@ -7076,7 +7092,7 @@ EOF
fi
fi
echo $ac_n "checking whether NLS is requested""... $ac_c" 1>&6
echo "configure:7080: checking whether NLS is requested" >&5
echo "configure:7096: checking whether NLS is requested" >&5
# Check whether --enable-nls or --disable-nls was given.
if test "${enable_nls+set}" = set; then
enableval="$enable_nls"
@ -7096,7 +7112,7 @@ fi
EOF
echo $ac_n "checking whether included gettext is requested""... $ac_c" 1>&6
echo "configure:7100: checking whether included gettext is requested" >&5
echo "configure:7116: checking whether included gettext is requested" >&5
# Check whether --with-included-gettext or --without-included-gettext was given.
if test "${with_included_gettext+set}" = set; then
withval="$with_included_gettext"
@ -7115,17 +7131,17 @@ fi
ac_safe=`echo "libintl.h" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for libintl.h""... $ac_c" 1>&6
echo "configure:7119: checking for libintl.h" >&5
echo "configure:7135: checking for libintl.h" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 7124 "configure"
#line 7140 "configure"
#include "confdefs.h"
#include <libintl.h>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:7129: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:7145: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -7142,19 +7158,19 @@ fi
if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
echo "$ac_t""yes" 1>&6
echo $ac_n "checking for gettext in libc""... $ac_c" 1>&6
echo "configure:7146: checking for gettext in libc" >&5
echo "configure:7162: checking for gettext in libc" >&5
if eval "test \"`echo '$''{'gt_cv_func_gettext_libc'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 7151 "configure"
#line 7167 "configure"
#include "confdefs.h"
#include <libintl.h>
int main() {
return (int) gettext ("")
; return 0; }
EOF
if { (eval echo configure:7158: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7174: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
gt_cv_func_gettext_libc=yes
else
@ -7170,7 +7186,7 @@ echo "$ac_t""$gt_cv_func_gettext_libc" 1>&6
if test "$gt_cv_func_gettext_libc" != "yes"; then
echo $ac_n "checking for bindtextdomain in -lintl""... $ac_c" 1>&6
echo "configure:7174: checking for bindtextdomain in -lintl" >&5
echo "configure:7190: checking for bindtextdomain in -lintl" >&5
ac_lib_var=`echo intl'_'bindtextdomain | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
@ -7178,7 +7194,7 @@ else
ac_save_LIBS="$LIBS"
LIBS="-lintl $LIBS"
cat > conftest.$ac_ext <<EOF
#line 7182 "configure"
#line 7198 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
@ -7189,7 +7205,7 @@ int main() {
bindtextdomain()
; return 0; }
EOF
if { (eval echo configure:7193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7209: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
@ -7205,12 +7221,12 @@ fi
if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
echo "$ac_t""yes" 1>&6
echo $ac_n "checking for gettext in libintl""... $ac_c" 1>&6
echo "configure:7209: checking for gettext in libintl" >&5
echo "configure:7225: checking for gettext in libintl" >&5
if eval "test \"`echo '$''{'gt_cv_func_gettext_libintl'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo $ac_n "checking for gettext in -lintl""... $ac_c" 1>&6
echo "configure:7214: checking for gettext in -lintl" >&5
echo "configure:7230: checking for gettext in -lintl" >&5
ac_lib_var=`echo intl'_'gettext | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
@ -7218,7 +7234,7 @@ else
ac_save_LIBS="$LIBS"
LIBS="-lintl $LIBS"
cat > conftest.$ac_ext <<EOF
#line 7222 "configure"
#line 7238 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
@ -7229,7 +7245,7 @@ int main() {
gettext()
; return 0; }
EOF
if { (eval echo configure:7233: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7249: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
@ -7268,7 +7284,7 @@ EOF
# Extract the first word of "msgfmt", so it can be a program name with args.
set dummy msgfmt; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7272: checking for $ac_word" >&5
echo "configure:7288: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_MSGFMT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7302,12 +7318,12 @@ fi
for ac_func in dcgettext
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:7306: checking for $ac_func" >&5
echo "configure:7322: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 7311 "configure"
#line 7327 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -7330,7 +7346,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:7334: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7350: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -7357,7 +7373,7 @@ done
# Extract the first word of "gmsgfmt", so it can be a program name with args.
set dummy gmsgfmt; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7361: checking for $ac_word" >&5
echo "configure:7377: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7393,7 +7409,7 @@ fi
# Extract the first word of "xgettext", so it can be a program name with args.
set dummy xgettext; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7397: checking for $ac_word" >&5
echo "configure:7413: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_XGETTEXT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7425,7 +7441,7 @@ else
fi
cat > conftest.$ac_ext <<EOF
#line 7429 "configure"
#line 7445 "configure"
#include "confdefs.h"
int main() {
@ -7433,7 +7449,7 @@ extern int _nl_msg_cat_cntr;
return _nl_msg_cat_cntr
; return 0; }
EOF
if { (eval echo configure:7437: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7453: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
CATOBJEXT=.gmo
DATADIRNAME=share
@ -7456,7 +7472,7 @@ fi
if test "$CATOBJEXT" = "NONE"; then
echo $ac_n "checking whether catgets can be used""... $ac_c" 1>&6
echo "configure:7460: checking whether catgets can be used" >&5
echo "configure:7476: checking whether catgets can be used" >&5
# Check whether --with-catgets or --without-catgets was given.
if test "${with_catgets+set}" = set; then
withval="$with_catgets"
@ -7469,7 +7485,7 @@ fi
if test "$nls_cv_use_catgets" = "yes"; then
echo $ac_n "checking for main in -li""... $ac_c" 1>&6
echo "configure:7473: checking for main in -li" >&5
echo "configure:7489: checking for main in -li" >&5
ac_lib_var=`echo i'_'main | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
@ -7477,14 +7493,14 @@ else
ac_save_LIBS="$LIBS"
LIBS="-li $LIBS"
cat > conftest.$ac_ext <<EOF
#line 7481 "configure"
#line 7497 "configure"
#include "confdefs.h"
int main() {
main()
; return 0; }
EOF
if { (eval echo configure:7488: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7504: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
@ -7512,12 +7528,12 @@ else
fi
echo $ac_n "checking for catgets""... $ac_c" 1>&6
echo "configure:7516: checking for catgets" >&5
echo "configure:7532: checking for catgets" >&5
if eval "test \"`echo '$''{'ac_cv_func_catgets'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 7521 "configure"
#line 7537 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char catgets(); below. */
@ -7540,7 +7556,7 @@ catgets();
; return 0; }
EOF
if { (eval echo configure:7544: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:7560: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_catgets=yes"
else
@ -7562,7 +7578,7 @@ EOF
# Extract the first word of "gencat", so it can be a program name with args.
set dummy gencat; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7566: checking for $ac_word" >&5
echo "configure:7582: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_GENCAT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7598,7 +7614,7 @@ fi
# Extract the first word of "gmsgfmt", so it can be a program name with args.
set dummy gmsgfmt; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7602: checking for $ac_word" >&5
echo "configure:7618: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7635,7 +7651,7 @@ fi
# Extract the first word of "msgfmt", so it can be a program name with args.
set dummy msgfmt; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7639: checking for $ac_word" >&5
echo "configure:7655: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7670,7 +7686,7 @@ fi
# Extract the first word of "xgettext", so it can be a program name with args.
set dummy xgettext; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7674: checking for $ac_word" >&5
echo "configure:7690: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_XGETTEXT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7728,7 +7744,7 @@ fi
# Extract the first word of "msgfmt", so it can be a program name with args.
set dummy msgfmt; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7732: checking for $ac_word" >&5
echo "configure:7748: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_MSGFMT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7762,7 +7778,7 @@ fi
# Extract the first word of "gmsgfmt", so it can be a program name with args.
set dummy gmsgfmt; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7766: checking for $ac_word" >&5
echo "configure:7782: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_GMSGFMT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7798,7 +7814,7 @@ fi
# Extract the first word of "xgettext", so it can be a program name with args.
set dummy xgettext; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:7802: checking for $ac_word" >&5
echo "configure:7818: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_XGETTEXT'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -7891,7 +7907,7 @@ fi
LINGUAS=
else
echo $ac_n "checking for catalogs to be installed""... $ac_c" 1>&6
echo "configure:7895: checking for catalogs to be installed" >&5
echo "configure:7911: checking for catalogs to be installed" >&5
NEW_LINGUAS=
for lang in ${LINGUAS=$ALL_LINGUAS}; do
case "$ALL_LINGUAS" in
@ -7919,17 +7935,17 @@ echo "configure:7895: checking for catalogs to be installed" >&5
if test "$CATOBJEXT" = ".cat"; then
ac_safe=`echo "linux/version.h" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for linux/version.h""... $ac_c" 1>&6
echo "configure:7923: checking for linux/version.h" >&5
echo "configure:7939: checking for linux/version.h" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 7928 "configure"
#line 7944 "configure"
#include "confdefs.h"
#include <linux/version.h>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:7933: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:7949: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -8163,7 +8179,7 @@ fi
# Figure out what assembler alignment features are present.
echo $ac_n "checking assembler alignment features""... $ac_c" 1>&6
echo "configure:8167: checking assembler alignment features" >&5
echo "configure:8183: checking assembler alignment features" >&5
gcc_cv_as=
gcc_cv_as_alignment_features=
gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
@ -8284,7 +8300,7 @@ fi
echo "$ac_t""$gcc_cv_as_alignment_features" 1>&6
echo $ac_n "checking assembler subsection support""... $ac_c" 1>&6
echo "configure:8288: checking assembler subsection support" >&5
echo "configure:8304: checking assembler subsection support" >&5
gcc_cv_as_subsections=
if test x$gcc_cv_as != x; then
# Check if we have .subsection
@ -8326,7 +8342,7 @@ echo "$ac_t""$gcc_cv_as_subsections" 1>&6
case "$target" in
sparc*-*-*)
echo $ac_n "checking assembler .register pseudo-op support""... $ac_c" 1>&6
echo "configure:8330: checking assembler .register pseudo-op support" >&5
echo "configure:8346: checking assembler .register pseudo-op support" >&5
gcc_cv_as_register_pseudo_op=
if test x$gcc_cv_as != x; then
# Check if we have .register
@ -8343,7 +8359,7 @@ EOF
echo "$ac_t""$gcc_cv_as_register_pseudo_op" 1>&6
echo $ac_n "checking assembler offsetable %lo() support""... $ac_c" 1>&6
echo "configure:8347: checking assembler offsetable %lo() support" >&5
echo "configure:8363: checking assembler offsetable %lo() support" >&5
gcc_cv_as_offsetable_lo10=
if test x$gcc_cv_as != x; then
# Check if assembler has offsetable %lo()
@ -8376,7 +8392,7 @@ EOF
i[34567]86-*-*)
echo $ac_n "checking assembler instructions""... $ac_c" 1>&6
echo "configure:8380: checking assembler instructions" >&5
echo "configure:8396: checking assembler instructions" >&5
gcc_cv_as_instructions=
if test x$gcc_cv_as != x; then
set "filds fists" "filds mem; fists mem"

24
gcc/configure.in
View File

@ -756,15 +756,31 @@ changequote([,])dnl
tmake_file=arm/t-linux
gnu_ld=yes
;;
arm*-*-linux-gnuoldld*) # ARM GNU/Linux with old ELF linker
xm_file=arm/xm-linux.h
xmake_file=x-linux
tm_file="arm/linux-oldld.h arm/linux-elf.h"
case $machine in
armv2*-*-*)
tm_file="arm/linux-elf26.h $tm_file"
;;
esac
tmake_file="t-linux arm/t-linux"
extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
gnu_ld=yes
case x${enable_threads} in
x | xyes | xpthreads | xposix)
thread_file='posix'
;;
esac
;;
arm*-*-linux-gnu*) # ARM GNU/Linux with ELF
xm_file=arm/xm-linux.h
xmake_file=x-linux
tm_file="arm/linux-elf.h"
case $machine in
armv2*-*-*)
tm_file=arm/linux-elf26.h
;;
*)
tm_file=arm/linux-elf.h
tm_file="arm/linux-elf26.h $tm_file"
;;
esac
tmake_file="t-linux arm/t-linux"

23
gcc/install.texi
View File

@ -914,12 +914,23 @@ produce @file{a.out} format object modules.
You may need to make a variant of the file @file{arm.h} for your particular
configuration.
@item arm-*-linuxaout
Any of the ARM family processors running the Linux-based GNU system with
the @file{a.out} binary format (ELF is not yet supported). You must use
version 2.8.1.0.7 or later of the GNU/Linux binutils, which you can download
from @file{sunsite.unc.edu:/pub/Linux/GCC} and other mirror sites for
Linux-based GNU systems.
@item arm-*-elf
This configuration is intended for embedded systems.
@item arm-*-linux-gnuaout
Any of the ARM-family processors running the Linux-based GNU system with
the @file{a.out} binary format. This is an obsolete configuration.
@item arm-*-linux-gnu
@itemx arm-*-linux-gnuoldld
Any of the ARM-family processors running the Linux-based GNU system with
the @file{ELF} binary format. You must use version 2.9.1.0.22 or later
of the GNU/Linux binutils, which you can download from
@file{ftp.varesearch.com:/pub/support/hjl/binutils}.
These two configurations differ only in the required version of GNU
binutils. For binutils 2.9.1.0.x, use @samp{arm-*-linux-gnuoldld}. For
newer versions of binutils, use @samp{arm-*-linux-gnu}.
@item arm-*-riscix
The ARM2 or ARM3 processor running RISC iX, Acorn's port of BSD Unix.