[meta-intel] [PATCH 1/1] Revert "emgd-driver-bin: add xorg-abi-video- dependency"

[Burton, Ross]

On 2 December 2012 23:19,  <tom.zanussi at intel.com> wrote:
> There's no explanation of what the actual problem was that this commit
> fixes - likely it was in response to the packaging problems causing
> YOCTO #3501 and YOCTO #3502.  In any case, nothing should cause a
> regression like this since xserver-xorg is pinned at 1.9.3 and its
> contents shouldn't change to cause something like 'xorg-abi-video' to
> disappear.

There was a thread on oe-core and the relevant oe-core commits had
plenty of explanation:

commit bc41dfb9cd2d3b90d97fa051c90d2f53bacde059
Author: Ross Burton <ross.burton at intel.com>
Date:   Mon Oct 22 10:37:24 2012 +0100

    xserver-xorg: add runtime provides for the driver ABI version

    The xserver driver ABIs can and do change in a way that is unrelated to the
    version of xserver, so it's entirely possible to build an image that has a
    mismatch between the server ABI version and the version that the
drivers were
    built against.  xserver detects this and refuses to load the modules.

    By adding RPROVIDEs to the xserver package that describe the ABI
versions it has
    (such as xorg-abi-video-13, xorg-abi-input-11), drivers can RDEPEND on the
    version that they were built against.  This means that when the ABIs change,
    there will be package dependency errors at image time instead of images that
    build fine but don't work.

    (From OE-Core rev: 8ef5f205aec04140198d5ba0f5c405ae6e977dbe)

You may have pinned xserver-xorg in the bitbake to 1.9.3 but:

1) it's entirely possible for the package feed to get 1.13 from
another MACHINE, because they'll both be in the "core2" arch feed
2) it's enforcing the ABI relationship which can't be expressed in any other way

> Also there doesn't appear to any xorg-abi-video-8, so it's doubtful
> that this commit actually fixed the problem it was trying to fix -
> should it instead be xorg-video-abi-8 which does exist?

Really?

ross at melchett /data/poky-master/tmp/work/core2-poky-linux/xserver-xorg/1_1.9.3-r2/deploy-ipks/core2
$ dpkg -I xserver-xorg_1.9.3-r2_core2.ipk
...
 Provides: xorg-abi-video-8, xorg-abi-input-11

Where are you seeing xorg-video-abi-8?  I'm concerned that the RPM
backend is messing things up.

Ross