[PATCH weston] configure.ac: bump libdrm requirement to 2.4.68

[Daniel Stone]

Hi,

On 11 June 2018 at 10:25, Pekka Paalanen <ppaalanen at gmail.com> wrote:
> On Mon, 11 Jun 2018 09:29:49 +1000
> Peter Hutterer <peter.hutterer at who-t.net> wrote:
>> +PKG_CHECK_MODULES(LIBDRM, [libdrm >= 2.4.68], [], [AC_MSG_ERROR([
>>       libdrm is a hard build-time dependency for libweston core,
>>       but a sufficient version was not found. However, libdrm
>>       is not a runtime dependency unless you have features
>
> this patch is correct, but I would like to hear more opinions if we
> want to bump the hard build-time dependency from release of Jan 2012 to
> Apr 2016.
>
> If we do this bump, we could remove the fallback definitions for
> DRM_FORMAT_R8 and DRM_FORMAT_GR88.
>
> In case we want to consider bumping even further, DRM_FORMAT_MOD_* were
> introduced in 2.4.83 (Aug 2017), and atomic in 2.4.78 (Apr 2017).

I'd be in favour of bumping all the way to .83. It's available in
Debian testing and unstable, as well as for stable (stretch) via the
backports.debian.org repository. It's available for Ubuntu 16.04 LTS
via the xenial-updates repository, and releases since. It's available
in Yocto Rocko (Oct 2017), but unsurprisingly not in Pyro (May 2017);
I believe there are a few BSPs based on Pyro and earlier still, but
they would be pretty trivial bumps to include if vendors want to
upgrade Weston.

Either patch is:
Acked-by: Daniel Stone <daniels at collabora.com>

Cheers,
Daniel