Re: [meta-fsl-arm][PATCH] gpu-viv-bin-mx6q: Make backend configurable

[Daiane Angolini <daiane.angolini@freescale.com>]

On 03-02-2014 09:34, Otavio Salvador wrote:
> Hello Carlos,
>
> On Mon, Feb 3, 2014 at 9:30 AM, Carlos Rafael Giani
> <dv@pseudoterminal.org> wrote:
>> On 2014-02-03 12:23, Otavio Salvador wrote:
>>> On Mon, Feb 3, 2014 at 8:41 AM, Carlos Rafael Giani
>>> <dv@pseudoterminal.org> wrote:
>>>>
>>>> With this change, the user can set USE_X11 etc. in local.conf to
>>>> override the recipe's DISTRO_FEATURES based choice. This is for example
>>>> beneficial when both X11 and wayland are supported, or when the user
>>>> wants to make use of the regular framebuffer backend. (Modifying
>>>> the distro features list may have far reaching consequences.)
>>>>
>>>> Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
>>>
>>> The Wayland and X11 backends  are not usable at same time as you need
>>> to build apps with different flags. Do you have an usecase in mind?
>>>
>>
>> For example, when I wanted to try out the framebuffer EGL backend of the
>> eglvivsink element in gstreamer-imx , I had to modify the
>> gpu-viv-bin-mx6q.inc file to force it to not install the X11 binaries. (Same
>> when I tried to develop a directfb EGL backend, which I postponed for now,
>> because there are zero docs and examples on how to actually do this.) I will
>> also need it later, when I start working on the Wayland backend. I also
>> needed it when trying to build an xbmc fork with imx extras ; it can only
>> render to framebuffer, not to X11.
>>
>> I agree though that a switch-like statement would be better, but I am not
>> sure how to implement that properly (my OE foo is not that high :) )
>
> The idea here is you to set:
>
> DISTRO_FEATURES_remove = "x11 wayland"
>
> in your local.conf and you'll get a 'framebuffer' system.
>
> Adding also:
>
> DISTRO_FEATURES += "directfb"
>
> gets you a 'DirectFB' system.

You mean, for DirectFB the needed code is:

	DISTRO_FEATURES_remove = "x11 wayland"
	DISTRO_FEATURES += "directfb"


So, both lines together.

If you only include directfb in DISTRO_FEATURES what probably will 
happen is an explosion due to universe collapse (x11+wayland+direcftb)

I know you said the same thing in your email, Otavio. But at first, it 
confused me. So I'm being redundant - just in case -






>
> Is it what you are looking for?
>
>


-- 
Daiane