&gt;&gt;So the question is why we have to modify also (a) to make (c) happy?<br /><br />&gt;I still do not understand what the problem is. meta-clang does have a dunfell branch, that sets LAYERSERIES_COMPAT accordingly, why are you not using that?<br /><br />Please assume that we can't, if this would make it possible to finally answer my aforementioned question.<br /><br />--<br />Regards,<br />Damian