Make incompatible with source control?

[J.S.Schwarz]

>
The underlying cause of the problem is SCCS's peculiar notion of the
meaning of the "w" bit. It is not just "make" that doesn't understand
this idea. Almost all other utilities (such as "cp" and "rm") believe
that you will turn off the "w" bit if you want a file to be treated
with extra care. SCCS believes exactly the opposite. For example, you
have gotten several files in a directory, some with -e and some
without.   You now accidentally do an "rm *".  What happens? The
files you have spent hours editing are removed, but the ones you can
easily recreate are not.

Jerry Schwarz
Bell Labs
Summit, N.J.