[OE-core] [PATCH 1/1] sstate.bbclass: fix parallel building issue

[Richard Purdie]

On Thu, 2013-08-15 at 10:55 +0100, Phil Blundell wrote:
> On Thu, 2013-08-15 at 17:51 +0800, Rongqing Li wrote:
> > OK, But your issue is not related to me.
> > 
> > I can reproduce my issue by two simple script.
> 
> If tar is deciding that the file has "changed" just because the link
> count on the dentry has increased, that sounds like it is probably a bug
> in tar and ought to be fixed there.
> 
> That said, I can't immediately think why autotools_copy_aclocal couldn't
> use a symlink rather than a hard link which would avoid this whole
> problem.  If the file is in the sysroot then there should be no risk of
> it going away underneath its user.

Sadly this doesn't work. We block copy a set of .m4 files from the
sysroot. We can be running do_configure of package A whilst package B is
de-installed from the sysroot and this leads to files disappearing
whilst they're being accessed. Its turned out to be a really awkward
problem to fix.

Cheers,

Richard