[poky] Master stability update

[Tian, Kevin]

> From: Xu, Dongxiao
> Sent: Wednesday, January 26, 2011 10:46 AM
> 
> Richard Purdie wrote:
> > We merged the features into master. I just want to highlight the
> > status of the following issues:
> >
> > * pseudo problem causing failure of meta-toolchain and corruption of
> > certain file permissions - fixed in master
> >
> > * the -live image issues some people and the autobuilder were seeing
> > - fixed in master
> >
> > * the perf issue for linux-yocto-stable - fixed in master
> >
> > The following are know issues with master:
> >
> > * Using rm_work and switching machines to machines of the same
> > "multimachine" architecture breaks.
> 
> After sysroot is per machine, we may need to reserve the "image" folder even
> when rm_work, since for the second machine build, do_populate_sysroot and
> do_package will be re-run to populate files into a different sysroot folder.
> 
> >
> > * When switching machines of the same "multimachine" architecture
> > (e.g.
> > emenlow to atom-pc), some sstate packages are changing checksums when
> > at first glance they shouldn't (e.g. perl do_install). A quick scan
> > of my sstate directory:
> 
> I also have a look at my local build sstate directories, there are 17 packages
> whose prebuilt result could not shared betweeen atom-pc and emenlow. Some
> of them may be not a problem since there are ${MACHINE} variables used in
> do_install(), some others are strange why do_install will have two different
> signatures between two different machines.
> 
> I will spend some time investigating it.
> 

Note that checksum changes may not come from do_install itself, which including 
the hash from other tasks that do_install depends on. To capture the latter 
possibility, you can simply use "bitbake -S poky-image-minimal" which only generates
.siginfo for all the tasks w/o actually running them. This way you can compare the
difference between emenlow and atom-pc easily to see what actually change.

Thanks
Kevin