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Date: Fri, 3 May 1996 12:50:47 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199605030250.MAA11166@godzilla.zeta.org.au>
To: current@freebsd.org, scrappy@ki.net
Subject: Re: Dependencies...how do they work?
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>	So, how exactly *does* mkdep build its dependencies? :)

It uses cc -M.

The dependencies for .depend itself are broke^H^H^H^H^Hoptimized.  It
doesn't get rebuilt when one of the files mentioned in it changes or
goes away.  E.g., when /usr/include/machine/pte.h goes away.  This is
easy to fix by removing .depend.

Bruce