+dnl Set CPU
+AC_MSG_CHECKING([for CPU specification])
+AC_ARG_WITH(mcpu,
+[ --with-mcpu[=CPU] Set name of CPU for gcc -mcpu])
+
+if test "$withval" == "no" -o "$withval" == "yes" -o "$withval" == ""; then
+ AC_MSG_RESULT([no])
+else
+ AC_MSG_RESULT([$withval])
+ CFLAGS="$CFLAGS -mcpu=$withval"
+fi
+