[oe] Race issues (lzma-native)

[Frans Meulenbroeks]

2010/11/22 Graham Gower <graham.gower at gmail.com>:
> On 22 November 2010 10:42, Andrea Adami <andrea.adami at gmail.com> wrote:
>> I though tthe issue had disappeared (in the meanwhile I remove an
>> obsolete dependency on zlib)
>> but yesterday again...
>>
>> run.SRC_DISTRIBUTECOMMAND was malformed, broken at line 122 (export
>> docdir="/oe/bu ).
>>
>> On second build the size is much bigger (1102 lines).
>>
>> Retrying..
>> Andrea
>>
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>
> With pstaging disabled, do_fetch is called twice. The second do_fetch
> races with do_unpack. Presumably we see a problem in lzma-native
> because it does oe.process.run() in do_unpack_append. I can't see
> exactly *what* is racing though.
>
> I previously spoke to Kergoth about it on IRC and he suggested making
> bb.build.exec_func("do_fetch", d) conditional on whether the do_fetch
> stamp file exists... I've not gotten around to doing that (bad me).
> Want to try it?

Hm.
I don't know the exact details, but this looks like a bandage, not
like a fix for the root problem.
Why is do_fetch called twice in the first place. I would expect this
not to happen.

Frans