AC_CREATE_TARGET_H [(HEADER-FILE [,PREFIX)]
,
Guido U. Draheim <guidod@gmx.de>
GPLWithACException
This program 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. As a special exception, the respective
Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify
the configure scripts that are the output of Autoconf when processing the Macro. You
need not follow the terms of the
GNU General Public License when using or distributing such scripts
Create the header-file and let it contain '#defines' for the target
platform. This macro is used for libraries that have
platform-specific quirks. Instead of inventing a target-specific
target.h.in files, just let it create a header file from the
definitions of AC_CANONICAL_SYSTEM and put only ifdef's in the
installed header-files.
if the HEADER-FILE is absent, [target.h] is used.
if the PREFIX is absent, [TARGET] is used.
the prefix can be the packagename. (y:a-z-:A-Z_:)
The defines look like...
#ifndef TARGET_CPU_M68K
#define TARGET_CPU_M68K "m68k"
#endif
#ifndef TARGET_OS_LINUX
#define TARGET_OS_LINUX "linux-gnu"
#endif
#ifndef TARGET_OS_TYPE /* the string itself */
#define TARGET_OS_TYPE "linux-gnu"
#endif
Detail: in the case of hppa1.1, the three idents "hppa1_1" "hppa1"
and "hppa" are derived, for an m68k it just two, "m68k" and "m".
The CREATE_TARGET_H__ variant is almost the same function, but
everything is lowercased instead of uppercased, and there is a "__"
in front of each prefix, so it looks like...
#ifndef __target_os_linux
#define __target_os_linux "linux-gnulibc2"
#endif
#ifndef __target_os__ /* the string itself */
#define __target_os__ "linux-gnulibc2"
#endif
#ifndef __target_cpu_i586
#define __target_cpu_i586 "i586"
#endif
#ifndef __target_arch_i386
#define __target_arch_i386 "i386"
#endif
#ifndef __target_arch__ /* cpu family arch */
#define __target_arch__ "i386"
#endif
Other differences: the default string-define is "__" instead of
"_TYPE".
Personally, I prefer the second variant (which had been the first
in the devprocess of this file but I assume people will often
fallback to the primary variant presented herein).
NOTE: CREATE_TARGET_H does also fill HOST_OS-defines Functionality
has been split over functions called CREATE_TARGET_H_UPPER,
CREATE_TARGET_H_LOWER, CREATE_TARGET_HOST_UPPER, and
CREATE_TARGET_HOST_LOWER.
CREATE_TARGET_H uses CREATE_TARGET_H_UPPER CREATE_TARGET_HOST_UPPER
CREATE_TARGET_H_ uses CREATE_TARGET_H_LOWER CREATE_TARGET_HOST_LOWER
There is now a CREATE_PREFIX_TARGET_H in this file as a shorthand
for PREFIX_CONFIG_H from a target.h file, however w/o the target.h
ever created (the prefix is a bit different, since we add an extra
-target- and -host-).
AC_DEFUN([AC_CREATE_TARGET_H],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_CREATE_TARGET_H_UPPER($1,$2)
AC_CREATE_TARGET_HOST_UPPER($1,$2)
])
AC_DEFUN([AC_CREATE_TARGET_OS_H],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_CREATE_TARGET_H_LOWER($1,$2)
AC_CREATE_TARGET_HOST_LOWER($1,$2)
])
AC_DEFUN([AC_CREATE_TARGET_H__],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_CREATE_TARGET_H_LOWER($1,$2)
AC_CREATE_TARGET_HOST_LOWER($1,$2)
])
dnl [(OUT-FILE [, PREFIX])] defaults: PREFIX=$PACKAGE OUTFILE=$PREFIX-target.h
AC_DEFUN([AC_CREATE_PREFIX_TARGET_H],[dnl
ac_prefix_conf_PKG=`echo ifelse($2, , $PACKAGE, $2)`
ac_prefix_conf_OUT=`echo ifelse($1, , $ac_prefix_conf_PKG-target.h, $1)`
ac_prefix_conf_PRE=`echo $ac_prefix_conf_PKG-target | sed -e 'y:abcdefghijklmnopqrstuvwxyz-:ABCDEFGHIJKLMNOPQRSTUVWXYZ_:'`
AC_CREATE_TARGET_H_UPPER($ac_prefix_conf_PRE,$ac_perfix_conf_OUT)
ac_prefix_conf_PRE=`echo __$ac_prefix_conf_PKG-host | sed -e 'y:abcdefghijklmnopqrstuvwxyz-:ABCDEFGHIJKLMNOPQRSTUVWXYZ_:'`
AC_CREATE_TARGET_HOST_UPPER($ac_prefix_conf_PRE,$ac_perfix_conf_OUT)
])
dnl [(OUT-FILE[, PREFIX])] defaults: PREFIX=$PACKAGE OUTFILE=$PREFIX-target.h
AC_DEFUN([AC_CREATE_PREFIX_TARGET_H_],[dnl
ac_prefix_conf_PKG=`echo ifelse($2, , $PACKAGE, $2)`
ac_prefix_conf_OUT=`echo ifelse($1, , $ac_prefix_conf_PKG-target.h, $1)`
ac_prefix_conf_PRE=`echo __$ac_prefix_conf_PKG-target | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ-:abcdefghijklmnopqrstuvwxyz_:'`
AC_CREATE_TARGET_H_LOWER($ac_prefix_conf_PRE,$ac_perfix_conf_OUT)
ac_prefix_conf_PRE=`echo __$ac_prefix_conf_PKG-host | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ-:abcdefghijklmnopqrstuvwxyz_:'`
AC_CREATE_TARGET_HOST_LOWER($ac_prefix_conf_PRE,$ac_perfix_conf_OUT)
])
AC_DEFUN([AC_CREATE_TARGET_H_FILE],[dnl
ac_need_target_h_file_new=true
])
AC_DEFUN([AC_CREATE_TARGET_H_UPPER],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_REQUIRE([AC_CREATE_TARGET_H_FILE])
changequote({, })dnl
ac_need_target_h_file=`echo ifelse($1, , target.h, $1)`
ac_need_target_h_prefix=`echo ifelse($2, , target, $2) | sed -e 'y:abcdefghijklmnopqrstuvwxyz-:ABCDEFGHIJKLMNOPQRSTUVWXYZ_:' -e 's:[^A-Z0-9_]::g'`
#
target_os0=`echo "$target_os" | sed -e 'y:abcdefghijklmnopqrstuvwxyz.-:ABCDEFGHIJKLMNOPQRSTUVWXYZ__:' -e 's:[^A-Z0-9_]::g'`
target_os1=`echo "$target_os0" | sed -e 's:\([^0-9]*\).*:\1:' `
target_os2=`echo "$target_os0" | sed -e 's:\([^_]*\).*:\1:' `
target_os3=`echo "$target_os2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
target_cpu0=`echo "$target_cpu" | sed -e 'y:abcdefghijklmnopqrstuvwxyz.-:ABCDEFGHIJKLMNOPQRSTUVWXYZ__:' -e 's:[^A-Z0-9_]::g'`
target_cpu1=`echo "$target_cpu0" | sed -e 's:\([^0-9]*\).*:\1:' `
target_cpu2=`echo "$target_cpu0" | sed -e 's:\([^_]*\).*:\1:' `
target_cpu3=`echo "$target_cpu2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
target_cpu_arch0=`echo "$target_cpu_arch" | sed -e 'y:abcdefghijklmnopqrstuvwxyz:ABCDEFGHIJKLMNOPQRSTUVWXYZ:'`
#
changequote([, ])dnl
#
if $ac_need_target_h_file_new ; then
AC_MSG_RESULT(creating $ac_need_target_h_file - canonical system defines)
echo /'*' automatically generated by $PACKAGE configure '*'/ >$ac_need_target_h_file
echo /'*' on `date` '*'/ >>$ac_need_target_h_file
ac_need_target_h_file_new=false
fi
echo /'*' target uppercase defines '*'/ >>$ac_need_target_h_file
dnl
old1=""
old2=""
for i in $target_os0 $target_os1 $target_os2 $target_os3 "TYPE"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef "$ac_need_target_h_prefix"_OS_"$i >>$ac_need_target_h_file
echo "#define "$ac_need_target_h_prefix"_OS_"$i '"'"$target_os"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $target_cpu0 $target_cpu1 $target_cpu2 $target_cpu3 "TYPE"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef "$ac_need_target_h_prefix"_CPU_"$i >>$ac_need_target_h_file
echo "#define "$ac_need_target_h_prefix"_CPU_"$i '"'"$target_cpu"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $target_cpu_arch0 "TYPE"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef "$ac_need_target_h_prefix"_ARCH_"$i >>$ac_need_target_h_file
echo "#define "$ac_need_target_h_prefix"_ARCH_"$i '"'"$target_cpu_arch"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
])
dnl
dnl ... the lowercase variant ...
dnl
AC_DEFUN([AC_CREATE_TARGET_H_LOWER],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_REQUIRE([AC_CREATE_TARGET_H_FILE])
changequote({, })dnl
ac_need_target_h_file=`echo ifelse($1, , target-os.h, $1)`
ac_need_target_h_prefix=`echo ifelse($2, , target, $2) | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ-:abcdefghijklmnopqrstuvwxyz_:' -e 's:[^a-z0-9_]::g'`
#
target_os0=`echo "$target_os" | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ.-:abcdefghijklmnopqrstuvwxyz__:' -e 's:[^a-z0-9_]::g'`
target_os1=`echo "$target_os0" | sed -e 's:\([^0-9]*\).*:\1:' `
target_os2=`echo "$target_os0" | sed -e 's:\([^_]*\).*:\1:' `
target_os3=`echo "$target_os2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
target_cpu0=`echo "$target_cpu" | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ.-:abcdefghijklmnopqrstuvwxyz__:' -e 's:[^a-z0-9_]::g'`
target_cpu1=`echo "$target_cpu0" | sed -e 's:\([^0-9]*\).*:\1:' `
target_cpu2=`echo "$target_cpu0" | sed -e 's:\([^_]*\).*:\1:' `
target_cpu3=`echo "$target_cpu2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
target_cpu_arch0=`echo "$target_cpu_arch" | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ:abcdefghijklmnopqrstuvwxyz:'`
#
changequote([, ])dnl
#
if $ac_need_target_h_file_new ; then
AC_MSG_RESULT(creating $ac_need_target_h_file - canonical system defines)
echo /'*' automatically generated by $PACKAGE configure '*'/ >$ac_need_target_h_file
echo /'*' on `date` '*'/ >>$ac_need_target_h_file
ac_need_target_h_file_new=false
fi
echo /'*' target lowercase defines '*'/ >>$ac_need_target_h_file
dnl
old1=""
old2=""
for i in $target_os0 $target_os1 $target_os2 $target_os3 "_";
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef __"$ac_need_target_h_prefix"_os_"$i >>$ac_need_target_h_file
echo "#define __"$ac_need_target_h_prefix"_os_"$i '"'"$target_os"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $target_cpu0 $target_cpu1 $target_cpu2 $target_cpu3 "_"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef __"$ac_need_target_h_prefix"_cpu_"$i >>$ac_need_target_h_file
echo "#define __"$ac_need_target_h_prefix"_cpu_"$i '"'"$target_cpu"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $target_cpu_arch0 "_"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef __"$ac_need_target_h_prefix"_arch_"$i >>$ac_need_target_h_file
echo "#define __"$ac_need_target_h_prefix"_arch_"$i '"'"$target_cpu_arch"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
])
dnl -------------------------------------------------------------------
dnl
dnl ... the uppercase variant for the host ...
dnl
AC_DEFUN([AC_CREATE_TARGET_HOST_UPPER],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_REQUIRE([AC_CREATE_TARGET_H_FILE])
changequote({, })dnl
ac_need_target_h_file=`echo ifelse($1, , target.h, $1)`
ac_need_target_h_prefix=`echo ifelse($2, , host, $2) | sed -e 'y:abcdefghijklmnopqrstuvwxyz-:ABCDEFGHIJKLMNOPQRSTUVWXYZ_:' -e 's:[^A-Z0-9_]::g'`
#
host_os0=`echo "$host_os" | sed -e 'y:abcdefghijklmnopqrstuvwxyz.-:ABCDEFGHIJKLMNOPQRSTUVWXYZ__:' -e 's:[^A-Z0-9_]::g'`
host_os1=`echo "$host_os0" | sed -e 's:\([^0-9]*\).*:\1:' `
host_os2=`echo "$host_os0" | sed -e 's:\([^_]*\).*:\1:' `
host_os3=`echo "$host_os2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
host_cpu0=`echo "$host_cpu" | sed -e 'y:abcdefghijklmnopqrstuvwxyz.-:ABCDEFGHIJKLMNOPQRSTUVWXYZ__:' -e 's:[^A-Z0-9]::g'`
host_cpu1=`echo "$host_cpu0" | sed -e 's:\([^0-9]*\).*:\1:' `
host_cpu2=`echo "$host_cpu0" | sed -e 's:\([^_]*\).*:\1:' `
host_cpu3=`echo "$host_cpu2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
host_cpu_arch0=`echo "$host_cpu_arch" | sed -e 'y:abcdefghijklmnopqrstuvwxyz:ABCDEFGHIJKLMNOPQRSTUVWXYZ:'`
#
changequote([, ])dnl
#
if $ac_need_target_h_file_new ; then
AC_MSG_RESULT(creating $ac_need_target_h_file - canonical system defines)
echo /'*' automatically generated by $PACKAGE configure '*'/ >$ac_need_target_h_file
echo /'*' on `date` '*'/ >>$ac_need_target_h_file
ac_need_target_h_file_new=false
fi
echo /'*' host uppercase defines '*'/ >>$ac_need_target_h_file
dnl
old1=""
old2=""
for i in $host_os0 $host_os1 $host_os2 $host_os3 "TYPE"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef "$ac_need_target_h_prefix"_OS_"$i >>$ac_need_target_h_file
echo "#define "$ac_need_target_h_prefix"_OS_"$i '"'"$host_os"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $host_cpu0 $host_cpu1 $host_cpu2 $host_cpu3 "TYPE"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef "$ac_need_target_h_prefix"_CPU_"$i >>$ac_need_target_h_file
echo "#define "$ac_need_target_h_prefix"_CPU_"$i '"'"$host_cpu"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $host_cpu_arch0 "TYPE"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef "$ac_need_target_h_prefix"_ARCH_"$i >>$ac_need_target_h_file
echo "#define "$ac_need_target_h_prefix"_ARCH_"$i '"'"$host_cpu_arch"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
])
dnl ---------------------------------------------------------------------
dnl
dnl ... the lowercase variant for the host ...
dnl
AC_DEFUN([AC_CREATE_TARGET_HOST_LOWER],
[AC_REQUIRE([AC_CANONICAL_CPU_ARCH])
AC_REQUIRE([AC_CREATE_TARGET_H_FILE])
changequote({, })dnl
ac_need_target_h_file=`echo ifelse($1, , target.h, $1)`
ac_need_target_h_prefix=`echo ifelse($2, , host, $2) | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ-:abcdefghijklmnopqrstuvwxyz_:' -e 's:[^a-z0-9_]::g'`
#
host_os0=`echo "$host_os" | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ.-:abcdefghijklmnopqrstuvwxyz__:' -e 's:[^a-z0-9_]::g'`
host_os1=`echo "$host_os0" | sed -e 's:\([^0-9]*\).*:\1:' `
host_os2=`echo "$host_os0" | sed -e 's:\([^_]*\).*:\1:' `
host_os3=`echo "$host_os2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
host_cpu0=`echo "$host_cpu" | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ.-:abcdefghijklmnopqrstuvwxyz__:' -e 's:[^a-z0-9_]::g'`
host_cpu1=`echo "$host_cpu0" | sed -e 's:\([^0-9]*\).*:\1:' `
host_cpu2=`echo "$host_cpu0" | sed -e 's:\([^_]*\).*:\1:' `
host_cpu3=`echo "$host_cpu2" | sed -e 's:\([^0-9]*\).*:\1:' `
#
host_cpu_arch0=`echo "$host_cpu_arch" | sed -e 'y:ABCDEFGHIJKLMNOPQRSTUVWXYZ:abcdefghijklmnopqrstuvwxyz:'`
#
changequote([, ])dnl
#
if $ac_need_target_h_file_new ; then
AC_MSG_RESULT(creating $ac_need_target_h_file - canonical system defines)
echo /'*' automatically generated by $PACKAGE configure '*'/ >$ac_need_target_h_file
echo /'*' on `date` '*'/ >>$ac_need_target_h_file
ac_need_target_h_file_new=false
fi
echo /'*' host lowercase defines '*'/ >>$ac_need_target_h_file
dnl
old1=""
old2=""
for i in $host_os0 $host_os1 $host_os2 $host_os3 "_";
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef __"$ac_need_target_h_prefix"_os_"$i >>$ac_need_target_h_file
echo "#define __"$ac_need_target_h_prefix"_os_"$i '"'"$host_os"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $host_cpu0 $host_cpu1 $host_cpu2 $host_cpu3 "_"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef __"$ac_need_target_h_prefix"_cpu_"$i >>$ac_need_target_h_file
echo "#define __"$ac_need_target_h_prefix"_cpu_"$i '"'"$host_cpu"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
#
old1=""
old2=""
for i in $host_cpu_arch0 "_"
do
if test "$old1" != "$i"; then
if test "$old2" != "$i"; then
echo " " >>$ac_need_target_h_file
echo "#ifndef __"$ac_need_target_h_prefix"_arch_"$i >>$ac_need_target_h_file
echo "#define __"$ac_need_target_h_prefix"_arch_"$i '"'"$host_cpu_arch"'"' >>$ac_need_target_h_file
echo "#endif" >>$ac_need_target_h_file
fi
fi
old2="$old1"
old1="$i"
done
])
dnl -------------------------------------------------------------------
dnl
dnl the instruction set architecture (ISA) has evolved for a small set
dnl of cpu types. So they often have specific names, e.g. sparclite,
dnl yet they share quite a few similarities. This macro will set the
dnl shell-var $target_cpu_arch to the basic type. Note that these
dnl names are often in conflict with their original 32-bit type name
dnl of these processors, just use them for directory-handling or add
dnl a prefix/suffix to distinguish them from $target_cpu
dnl
dnl this macros has been invented since config.guess is sometimes
dnl too specific about the cpu-type. I chose the names along the lines
dnl of linux/arch/ which is modelled after widespread arch-naming, IMHO.
dnl
AC_DEFUN([AC_CANONICAL_CPU_ARCH],
[AC_REQUIRE([AC_CANONICAL_SYSTEM])
target_cpu_arch="unknown"
case $target_cpu in
i386*|i486*|i586*|i686*|i786*) target_cpu_arch=i386 ;;
power*) target_cpu_arch=ppc ;;
arm*) target_cpu_arch=arm ;;
sparc64*) target_cpu_arch=sparc64 ;;
sparc*) target_cpu_arch=sparc ;;
mips64*) target_cpu_arch=mips64 ;;
mips*) target_cpu_arch=mips ;;
alpha*) target_cpu_arch=alpha ;;
hppa1*) target_cpu_arch=hppa1 ;;
hppa2*) target_cpu_arch=hppa2 ;;
arm*) target_cpu_arch=arm ;;
m68???|mcf54??) target_cpu_arch=m68k ;;
*) target_cpu_arch="$target_cpu" ;;
esac
host_cpu_arch="unknown"
case $host_cpu in
i386*|i486*|i586*|i686*|i786*) host_cpu_arch=i386 ;;
power*) host_cpu_arch=ppc ;;
arm*) host_cpu_arch=arm ;;
sparc64*) host_cpu_arch=sparc64 ;;
sparc*) host_cpu_arch=sparc ;;
mips64*) host_cpu_arch=mips64 ;;
mips*) host_cpu_arch=mips ;;
alpha*) host_cpu_arch=alpha ;;
hppa1*) host_cpu_arch=hppa1 ;;
hppa2*) host_cpu_arch=hppa2 ;;
arm*) host_cpu_arch=arm ;;
m68???|mcf54??) host_cpu_arch=m68k ;;
*) host_cpu_arch="$target_cpu" ;;
esac
])