+AC_ARG_WITH(arch, [ --with-arch=ARCH Force architecture to ARCH], arch="$withval", arch=auto)
+
+if test $cross_compiling = yes; then
+ case "$arch" in
+ auto)
+ AC_MSG_ERROR([Cannot autodetect architecture in cross compile environment]
+ [Use --with-arch=ARCH to specify architecture])
+ ;;
+ esac
+fi
+
+ARCHITECTURE=$arch
+AC_SUBST(ARCHITECTURE)
+
+dnl ==========================================================================
+