[poky] ccache

[Gary Thomas]

Why is ccache being used for Poky/Yocto builds?  My understanding is
that it's a win for _rebuilds_ of the same/related files, but there's
not a whole lot of that going on.

If I build core-image-sato from scratch, I end up with ${BUILD}/tmp/ccache
which is 1.8GB - quite a bite!  Is there some way to disable this?, other
than not have ccache on my host computer (not an option as it is useful
for other builds I do)

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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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