[OE-core] [RFC] Remove vala from oe-core

[Alexander Kanavin]

On 11/10/2015 05:10 PM, Burton, Ross wrote:

>     I should clarify: there might be Vala software out there that
>     someone would want to run in an embedded context. And that software
>     might require Vala bindings for libraries that are in oe-core. If we
>     don't provide those bindings, then either the layer that adds vala
>     recipe also has to patch all of our oe-core recipes, or (worse!) the
>     person who needs something vala-based also has to ad-hoc-patch the
>     dependency recipes of that.
>
>
> One solution for no vala in oe-core would be for all vala-supporting
> recipes in oe-core to have a PACKAGECONFIG[vala], so if someone does
> want Vala then they just need to add meta-vala (for example) to their
> layers and enable the PACKAGECONFIGs where they want it enabled.
> There's plenty of prior art for this behaviour in oe-core already.


PACKAGECONFIG alone is not sufficient; to build the bindings properly, 
the package also needs to inherit vala.bbclass:

https://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/tree/meta/classes/vala.bbclass?h=akanavin/gobject-introspection-experimental


Alex