[OE-core] [PATCH 2/4] recipes: add x11 to required DISTRO_FEATURES

[Martin Jansa]

On Thu, Jul 24, 2014 at 02:52:45PM +0100, Burton, Ross wrote:
> On 24 July 2014 14:42, Martin Jansa <martin.jansa at gmail.com> wrote:
> > +REQUIRED_DISTRO_FEATURES = "x11"
> 
> Now I'm wondering why this is the solution.
> 
> If you attempt to build e.g. gnome-desktop explicitly without the x11
> distro feature you understandably get an error message, because
> gnome-desktop depends on libx11 which sanity checks the distro
> features.  This seems correct.
> 
> Presumably you're problem is that you're running world builds and
> they're producing errors on gnome-desktop because they can't satisfy a
> dependency on libx11.  It seems that bubbling up the
> REQUIRED_DISTRO_FEATURES tests isn't the right thing to do here - why
> can't SkipPackage be handled specially, so if you do bitbake -k world
> and libx11 emits SkipPackage, anything that has unsatisfiable
> dependencies because of this is also skipped?

We discussed this many months ago and IIRC the conclusion was that user
should explicitly say that he wants to skip the recipes which depend on
something skipped (so that he is aware of what he is missing).

At that time there wasn't REQUIRED_DISTRO_FEATURES support, so I've
created huge list of PNBLACKLISTs to blacklist everything not available
in our setup - so I can do world builds without ERRORs at the beginning.

REQUIRED_DISTRO_FEATURES seems to me like reasonable compromise, that's
why I've sent this patchset to replace small part of my huge blacklist.

This is the list:
https://github.com/openwebos/meta-webos/blob/master/conf/distro/include/webos-recipe-blacklist-world.inc

If someone has time to improve SkipPackage and we really want to skip
all depending packages, I would be glad to test such patch (because it
allows to easily drop all those blacklists for "depends-on-broken"
components)

Regards,

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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