[oe] Why PREFERRED_VERSION setting of <distro>.conf overrules local.conf setting ?

[Chris Larson]

On Mon, Aug 9, 2010 at 6:26 AM, Hauser, Wolfgang (external) <
Wolfgang.Hauser.external at eads.com> wrote:

> Hello,
>
> I want to change some used versions of packages, so I added a
> PREFERRED_VERSION_<package>="xxx" for the packages I want to have a
> special(newer) version to be used.
>
> But e. g. for busybox the version defined in the used <distro>.conf is
> used instead of my setting in local.conf.
>
> Should local.conf not overrule <distro/machine>.conf ??


Conceptually, local should override everything, as it's the "most specific"
information available, but from a technical standpoint, we can't parse the
machine and distro configs until local.conf is parsed, as that's usually
where the MACHINE and DISTRO are set.  You can use a 'local' override to get
around it, or you can ask the distro/machine maintainer to use ?=
assignments (set only if unset).

PREFERRED_VERSION_<package>_local = "xxx" is how you use the override.
-- 
Christopher Larson
clarson at kergoth dot com
Founder - BitBake, OpenEmbedded, OpenZaurus
Maintainer - Tslib
Senior Software Engineer, Mentor Graphics