[OE-core] [PATCHv2] wic: fix images build in parallel

[Paul Barker]

On Mon, 13 Jan 2020 at 13:57, Maxim Uvarov <maxim.uvarov at linaro.org> wrote:
>
> On Mon, 13 Jan 2020 at 16:31, Paul Barker <pbarker at konsulko.com> wrote:
> >
> > On Mon, 13 Jan 2020 at 13:08, Maxim Uvarov <maxim.uvarov at linaro.org> wrote:
> > >
> > > OE wic plugins create temporary file with the index of the line
> > > tmp file name. This causes race in case several builds run in time.
> > > Add more entropy as timestamp to remove this race.
> >
> > How would two wic images to be built in parallel with the same work
> > directory? To my understanding an image recipe only supports building
> > a single wic image.
> >
> > Thanks,
> > Paul
>
> bitbake image1 image2 image3
> all images build .wics and use about the same files, like firmware.
> Issue is similar to that:
> https://www.yoctoproject.org/pipermail/yocto/2018-June/041373.html

Each image has its own work directory though.

I'll take a look in more detail later today or tomorrow, if wic is
writing temporary files outside of the work directory then that's a
bug and should be fixed.