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Date: Fri, 28 Oct 2005 16:51:14 +0100
From: Antoine Pelisse <apelisse@gmail.com>
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Subject: compiling the kernel faster
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>
> You can set NOCLEAN in your environment. That will save you from
> having to rebuild things that didn't change. Major time saver if
> you're only working in a couple of files.

 It's NO_CLEAN actually, and for the kernel building, it's especially
NO_KERNELCLEAN
 Antoine Pelisse

-Glenn