[meta-virtualization] RFC [PATCH] fix non-x86 xen-guest-image-minimal

[christopher.w.clark at gmail.com]

From: Christopher Clark <christopher.w.clark at gmail.com>

This RFC patch aims to fix xen-guest-image-minimal for non-x86 builds,
whilst preserving compatibility with x86.

x11 package inclusion is optional for both x86 and non-x86.

Re: May 2017 thread:
"[meta-virtualization] [meta-xilinx] Trying to build xen-guest-image-minimal"
https://lists.yoctoproject.org/pipermail/meta-virtualization/2017-May/002556.html

Feedback would be appreciated, especially on:

1) Whether this addresses the needs of meta-xzd, enabling replacement of
   xzd-domu-image-minimal.bb with a bbappend of this recipe.

2) The correctness of aspects of the patch:

* It switches to use IMAGE_FEATURES rather than DISTRO_FEATURES for
  specifying the inclusion of x11 packages in the image; this seems more
  correct for an image recipe.
  DISTRO_FEATURES appears to default to x11 enabled, IMAGE_FEATURES does not.

* It introduces a bbappend for xserver-xorg to modify the default
  Xserver configuration for non-x86 builds where DISTRO_FEATURES
  includes 'xen', to drop dependencies on egl. In build tests, this has
  simplified satisfying dependencies for building x11 for domU.

* Compatibility with Xilinx hardware profiles and software layers.
  I have not verified this. I have build tested x86 with
  MACHINE=genericx86-64 and ARM with MACHINE=cubietruck, using meta-sunxi.

Thanks for your interest and attention.

Christopher Clark (1):
  xen-guest-image-minimal: Fix non-x86. Select x11 via IMAGE_FEATURES.

 recipes-extended/images/xen-guest-image-minimal.bb    | 16 +++++++++++++---
 recipes-graphics/xorg-xserver/xserver-xorg_%.bbappend | 14 ++++++++++++++
 2 files changed, 27 insertions(+), 3 deletions(-)
 create mode 100644 recipes-graphics/xorg-xserver/xserver-xorg_%.bbappend

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2.7.4