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From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: Patches and discussions about the oe-core layer
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Subject: Re: Broken parallel build of gcc*
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On Sat, 2012-07-21 at 16:39 +0200, Enrico Scholz wrote:
> Enrico Scholz
> <enrico.scholz-wttK6gPy29v+Hn7q9Vec/7NAH6kLmebB@public.gmane.org>
> writes:
> 
> >> Encrico: Which DISTRO are you using and do you use rm_work*.bbclass?
> >
> > yes; rm_old_work seems to cause the problem. 
> 
> The signature stuff was one problem; there is another, more trivial (but
> probably more difficult) one:
> 
> Adding a task like
> 
> | addtask do_rm_old_work before do_unpack
> 
> causes stampfile dependencies for the shared gcc like
> 
> gcc.do_unpack ->  gcc-initial.do_rm_old_work
> gcc.do_unpack ->  gcc-intermediate.do_rm_old_work
> 
> E.g. the earlier 'do_rm_old_work' stamps are recipe dependent but the
> later 'do_unpack' are shared between recipes. Bitbake reexecutes do_unpack
> when the corresponding do_rm_old_work is newer which is causing the seen
> errors.

do_rm_old_work[stamp-base] = "${SS}"

in the gcc recipe would probably help that. Your alternative solution
obviously works too.

Cheers,

Richard