[ccache] Combining caches

Mike McLean mikem.rtp at gmail.com
Tue May 4 16:08:18 MDT 2010

I know it is possible to use a shared cache, but is it possible to
take two separate caches and combine them into one? Would there be any
issues if different versions of ccache are in use?

My motivation here is to support ccache in the Koji build system is
such a way that the build environment (which would include the cache)
is still tracked and repeatable.

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