[OE-core] [PATCH] bitbake.conf, module.bbclass: Support opting out of legacy EXTRA_OEMAKE

[Mike Crowe]

On Friday 06 November 2015 at 01:16:46 -0800, Andre McCurdy wrote:
> On Thu, Nov 5, 2015 at 6:47 AM, Mike Crowe <mac at mcrowe.com> wrote:
> > Give recipes and classes the ability to opt out of EXTRA_OEMAKE
> > containing the legacy value without removing other recipe-specific or
> > local additions.
> 
> Isn't this possible already from within a recipe or class by using
> 
>   EXTRA_OEMAKE = ...
> 
> instead of
> 
>   EXTRA_OEMAKE += ...
> 
> ie what autotools.bbclass, kernel.bbclass and many recipes do already.
> 
> For the specific case of module.bbclass, changing the EXTRA_OEMAKE
> assignment to '=' might require some recipes to be tweaked to so that
> they "inherit module" before adding their own options to EXTRA_OEMAKE,
> but it seems like a cleaner solution?

It would be, but I was afraid of what I might break. I suspect that there
are many unseen third-party and local recipes that inherit module.bbclass.

It would be great to get to the point that EXTRA_OEMAKE is empty by default
but I imagine that the experts are already aware of the difficulties with
doing this which is why the current value has lasted so long.

Mike.