[oe] Eliminating dependency race-conditions (was Re: [PATCH] net-snmp: disable libnl use)

[Phil Blundell]

On Tue, 2011-03-15 at 10:08 +0100, Esben Haabendal wrote:
> The current dependency/staging model of OE basically has this feature
> that a build can be influenced not only by it's own dependencies, but
> also what has been build before it (or not).
> 
> I strongly believe that this has to be fixed on the architectural level,
> and not just on a case-by-case level as is currently needed.

Yes, agreed.  This clearly sucks, and indeed I think it is probably the
largest single area of architectural suckage in OE today.

> I am still very much interested in discussing how to move this
> technology from OE-lite to OE, but as it impacts all recipe metadata
> (build dependencies has to be redefined), OE community at a large really
> needs to value the benefits of solving this problem.

The benefits of solving the problem are clearly very great, but I don't
think OE itself is really in a position to embrace a "big bang" kind of
change which would require redefining all the build dependencies.  I
think we need to find a technological solution which will work with our
current DEPENDS scheme.

I did do some work in that direction about a year ago, but I got
sidetracked into dealing with some toolchain suckage (which was making
it difficult to construct the per-recipe sysroots in the way that I
wanted) and then ran out of time.  I would like to get back to working
on this stuff but right now it is difficult for me to set aside the time
for it.

p.