OOB - can we teach imgcreator about our arm arch?

[Peter Robinson]

On Thu, Jun 9, 2011 at 10:52 PM, Martin Langhoff
<martin.langhoff at gmail.com> wrote:
> Hi Daniel, Peter, list
>
> I am wondering how we can teach imgcreator about our ARM arch, so that
> it can build an image with some arm5tel packages and some armv7l
> packages (such as the kernel).

If we do something like run imgcreator as armv7l it should just work,
this might not work if its run on koji2/koji3 due to them only being
v5tel

> Today I discovered that rpm itself is complaining about installing a
> kernel armv7l package -- in a lousy hack in a preimage script,
> probably because uname reports that the (build)host is arm5tel. We'll
> probably have to teach rpm about this as well.

I've had issues like that in the past when we had issues with the XO-1
where I had to use --ignorearch but from mem it uses one of the args
from uname -a to check arch. Although if your building it on
koji2/koji3 which is arm5tel that might cause issues as well.

> Do you know where and how rpm, yum and imgcreator keep track of arches
> and subarches?

rpm already knows about this, there's a series of inheritance that you
setup. Its contained in the redhat-rpm-config package. In particular
the /usr/lib/rpm/rpmrc file (search for arch_compat). But the arm
section currently looks like this:

arch_compat: armv4b: noarch
arch_compat: armv7l: armv6l
arch_compat: armv6l: armv5tejl
arch_compat: armv5tejl: armv5tel
arch_compat: armv5tel: armv4tl
arch_compat: armv4tl: armv4l
arch_compat: armv4l: armv3l
arch_compat: armv3l: noarch

Peter