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Date: Tue, 3 Apr 2012 22:51:27 +0200
From: Michael Olbrich <m.olbrich@pengutronix.de>
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Subject: Re: [ptxdist] [ANNOUNCE] PTXdist 2012.04.0 released
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On Tue, Apr 03, 2012 at 10:19:22PM +0200, Juergen Beisert wrote:
> Michael Olbrich wrote:
> > There is one new core feature: Runtime/Buildtime dependencies. Just use
> > "select FOO if RUNTIME" or "select BAR if BUILDTIME".
> 
> Fine. Can you also explain why someone should use this new feature (or why 
> not)?

This is mostly to recompile less when possible. Take a look at
rules/xorg-app-xinit.in for example: startx needs mcookie so xorg-app-xinit
depends on util-linux-ng, although this is not needed to compile
xorg-app-xinit. Before this change, changing an unrelated util-linux-ng
option meant recompiling xorg-app-xinit. Now only targetinstall is
reexecuted.

Michael

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