Re: compile: don't ask over and over about saving unrelated files

[Richard Stallman]

    And the list of files to ignore should probably be in a buffer-local
    variable, shouldn't it?  Since for different compilations, different
    files might not warrant saving.

This would only work the way you intend if you switch to the
compilation buffer before doing M-x compile.  But it is normal
to do M-x compile from other buffers, and in that mode of use,
the local variable won't do the job.