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Date: Sat, 5 Apr 2003 12:43:29 -0500 (EST)
From: "Geoffrey C. Speicher" <geoff@speicher.org>
To: freebsd-hackers@freebsd.org
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cc: Marc Ernst Eddy van Woerkom <Marc.Vanwoerkom@FernUni-Hagen.de>
cc: Poul-Henning Kamp <phk@critter.freebsd.dk>
Subject: kernel device dependency and sys/conf/files format
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I'm revisiting the project to determine device dependency in the kernel,
and I've run into a situation where net/if.c requires the ether device,
but no device appears to require net/if.c directly.

sys/conf/files says that net/if.c is "standard", but I have no idea what
that means in terms of building a kernel.  An entry (filename) in that
file can be listed as standard, mandatory, optional, or count.  Mandatory
and optional seem pretty self-explanatory, but can anyone explain the
meaning of standard and count?

I assume that net/if.c can be removed from the build or else it would be
listed as mandatory, but it does appear that an awful lot of things
implicitly depend on it.

Geoff