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Re: GNU make to consider files checksum

From: Giuseppe Scrivano
Subject: Re: GNU make to consider files checksum
Date: Tue, 29 Sep 2009 09:59:26 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux)

Philip Guenther <address@hidden> writes:

> (Have you measured how often this sort of thing would save
> recompilation and/or relinking and how much time it would save then?
> What's the comparison to how much time would be spent calculating the
> checksums?  If it saves a minute once every 100 compiles but costs a
> second in each of those, then it's a net loss...)

I don't have numbers but I think it can save a lot of time in the
linking phase, that is *really* slow.


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