[Libreoffice] clean rebuilds needed

[Bjoern Michaelsen]

On Mon, 26 Sep 2011 21:33:03 +0200
Stephan Bergmann <sbergman at redhat.com>
wrote:

> I think its *file based* dependencies that's the problem here -- they 
> are simply not at the right level of granularity.  (Then again, I'm
> not sure there's at all a working theory of making arbitrary changes
> to your source tree and then rebuilding everything that needs to be
> rebuilt while only rebuilding as little as possible what would not
> necessarily need to be rebuilt.)

No need for such theory, as for all practical proposes, there is ccache
doing exactly that (although with a bit of addition IO). As for finer
granularity: With the practical reality of C/C++ with preprocessing,
context sensitive syntax and commandline switches to influence the
compile result there is little hope for such a thing existing _and_ be
reasonably fast (read: orders of magnitude faster than just frigging
compiling it).

Best,

Bjoern

-- 
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