Shuah Khan [off-list ref] writes:

Define CLEAN macro to allow Makefiles to override common clean target
in lib.mk. This will help fix the following failures:

warning: overriding recipe for target 'clean'
../lib.mk:55: warning: ignoring old recipe for target 'clean'

Signed-off-by: Shuah Khan <redacted>

Should probably have:

Fixes: 88baa78d1f31 ("selftests: remove duplicated all and clean target")


In hindsight I'm not sure moving the clean target into lib.mk was
the best idea, but anyway it's a bit late to change our mind on that.

This patch is a good solution to fix the warnings.

Acked-by: Michael Ellerman <mpe@ellerman.id.au>

cheers