[coreboot] using overlayfs to have several coreboot dev envs

Trammell Hudson hudson at trmm.net
Sun Nov 20 21:45:02 CET 2016

On Sun, Nov 20, 2016 at 08:20:51PM +0000, ron minnich wrote:
> [...]
> There's also no fundamental reason for using the name .config other than
> tradition. We could, for example, create
> build/vendor/mainboard/config and use that.

One minor concern with that placement is that I enjoy the ability to
nuke a partial or corrupted builds my doing 'rm -rf coreboot/x230',
so having the config file stored in a generated directory would be

However, it would be nice to remember the $(obj) and $(DOTCONFIG)
variables when oldconfig is run in an external build.  kbuild generates
a Makefile in the external directory with its equivilant of those
variables preset so that you can run 'make' in the output directory
and have it do the right thing.


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