On Wed, Mar 15, 2017 at 5:37 PM, Andrew F. Davis <afd@xxxxxx> wrote:
> Hello all,
>
> I was building a kernel for x86 and noticed Make still descended into
> directories like drivers/gpu/drm/hisilicon, this seems kind of odd given
> nothing will be built here. It looks to be due to some directories being
> included in obj-y unconditionally instead of only when the relevant
> CONFIG_ is set.
>
> These patches are split by subsystem in-case, for some reason, a file in
> a directory does need to be built, I believe I have checked for all
> instances of this, but a quick review from some maintainers would be nice.
I didn't see anything wrong with the patches, and made sure that there
are no tristate symbols controlling the subdirectory for anything that
requires a built-in driver (which would cause a link failure).
I'm not sure about drivers/lguest, which has some special magic
in its Makefile, it's possible that this now fails with CONFIG_LGUEST=m.
Arnd
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