[Mesa-dev] [PATCH 1/2] autotools+dri3: allow building against older xcb (v4)

[Brian Paul]

On 03/14/2018 08:40 AM, Rob Clark wrote:
> On Wed, Mar 14, 2018 at 10:29 AM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
>> On 14 March 2018 at 13:04, Rob Clark <robdclark at gmail.com> wrote:
>>> From: Dave Airlie <airlied at redhat.com>
>>>
>>> I'm not sure everyone wants to be updating their dri3 in a forced
>>> march setting, this allows a nicer approach, esp when you want
>>> to build on distro that aren't brand new.
>>>
>>> I'm sure there are plenty of ways this patch could be cleaner,
>>> and I've also not built it against an updated dri3.
>>>
>>> For meson I've just left it alone, since if you are using meson
>>> you probably don't mind xcb updates, and if you are using meson
>>> you can fix this better than me.
>>>
>>> v3: just don't put a version in for dri3/present without
>>> modifiers, should allow building with 1.11 as well
>>> v4: small fix to meson build
>>>
>>> (feel free to supply meson followups)
>>>
>> IIRC Matt seemed also on board with making the new xcb a hard requirement.
>>
>> I don't know the exact usecase he was thinking, yet gut feeling
>> suggests that my earlier suggestion [1] should work for everyone -
>> Dave, Matt, Marek, etc.
>> If the concern is writing the code - I can help ;-)
>>
> 
> I care *significantly* less about the build against 1.12, run against
> 1.13 case than I do about getting back to the point where I don't have
> to carry around these patches to build mesa (otherwise it is just a
> matter of time before I accidentally push them just because I needed
> them to test whatever it was that I was intending to push ;-)
> 
> If someone wants to build on top of this and make something more
> fancy, by all means.  But I really would like to push something that
> removes the 1.13 dependency like today(ish), whether that be this
> patchset or reverting the patches that added the 1.13 dependency and
> trying again later.

FWIW, I'd like to see this sooner rather than later too.  I spent 
several hours yesterday trying to update our build script to 
build/install XCB 1.13 on Fedora, Ubuntu, etc. without totally succeeding.

-Brian