[oe] Simultaneous build of two intree packages

[Khem Raj]

On Monday, May 7, 2012, Radek Dostal <rd at radekdostal.com> wrote:
> On Mon, 2012-05-07 at 06:02 -0600, Gary Thomas wrote:
>> On 2012-05-07 05:54, Radek Dostal wrote:
>> > Dear All,
>> >
>> > I have three intree recipes A, B and C which are part of the same
layer.
>> > =>  B depends on A
>> > =>  C depends on A.
>> >
>> > There is no dependency between B and C. Only important thing is that B
>> > and C are not build simultaneously. This is not a problem unless I use
>> > configure BB_NUMBER_THREADS>  1. Than builds B and C starts to collide
>> > and produce mess because they are both intree builds.
>>
>> What are you doing that makes these clash?
>
> usually it crashes during "ln -sf target dest" which is executed
> simultaneously with same parameters for both builds. There are other
> issues as well in addition to this ln issue.

This is confusing why does this happen at all

>
>> >
>> > Is there something like a mutex/lock mechanism in openembedded-core,
>> > which would forbid two recipes to be build simultaneously?
>>
>> Just make C depend on B
>
> I have already considered this, but unfortunately I also have
> configurations where only B is included or where only C is included :(
>
> Thanks,
> Radek
>
>
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