There are two VAX-dependent file in this directory: - bcopy.s block copy routine. You can simply remove this from the Makefile if you are running 4.2; bcopy is already provided. - bzero.s block zero routine. As above. There is one more system-dependent file: - error.c error and panic routines. These make calls to stdio internals, except on System V or other machines on which there are `vprintf' routines. Define HAVE_VPRINTF if you have the vprintf routines. See the manuals for the parameters to these.