title: How can I shift a relative path up one level in make?
body: <p>Sorry if this is a little esoteric, but in my makefile I have a variable $(BASE) which is a relative path.  I need to get the path <em>one level up</em>.
  So if I had "../../../src", I want "../../src".<br>
  Is there way to do this easily in Make?</p>