[OE-core] [PATCH 0/2] RFC - CCACHE_DIR to not impact sstate

[Jason Wessel]

I am not exactly sure how to fix this, so I thought I might ask in the
form of a working patch.  The problem is that I want to use an
external CCACHE_DIR on some build servers, but use the defaults on
others.  Ultimately the sstate sums should be the same in either case,
but they are not due to the way that bitbake tracks the "export"
variables for inclusion i the sum dependencies.  My example test is to
simply set CCACHE_DIR = "/tmp/ccache" in the local.conf and recompile
the quilt-native package.

I ended up adding another check to the dependency generator because
simply trying to use "unexport" had undesired effects.  If there is a
better or correct way of fixing this such that CCACHE_DIR will not
impact the sstate sum, I would really like to know how to do this. :-)

Thanks,
Jason.