Ross, the definition of RPROVIDES is not given in the Yocto project reference 
manual.
Perhaps it should be added to the manual ?

Thanks
Rahul

-----Original Message-----
From: yocto-boun...@yoctoproject.org [mailto:yocto-boun...@yoctoproject.org] On 
Behalf Of Burton, Ross
Sent: Thursday, September 13, 2012 4:04 AM
To: Chris Tapp
Cc: yocto@yoctoproject.org Project
Subject: Re: [yocto] Denzil / Cedartrail / EGL/GLES under X

Hi Chris,

On 10 September 2012 19:56, Chris Tapp <opensou...@keylevel.com> wrote:
> I've managed to get to the point where I think EGL is up (no API errors 
> reported), but if I try anything on the GL side (e.g. glClear to get the 
> background color) I'm not getting anything showing on the display when I call 
> eglSwapBuffers().

GL or GLES?  GL on Cedar Trail is very limited , you're heavily recommended to 
use GLES.

> I'm not sure how to configure my build to use the cdv-pvr-driver libs rather 
> than the MESA-dri equivalents either. Both provide libGLESv2, etc., but I 
> want the cdv-pvr-driver versions in the final image. However, cdv-prv-driver 
> doesn't seem to have an include directory to use at build time, so MESA needs 
> to be there as well. Is there a PREFERRED_PROVIDER_virtual/libgl value I can 
> use?

This is a bit of a mess at the moment, and I want to sort it, but it's a 
complicated mess.

Building against mesa-dri shouldn't be a problem as all GL implementations have 
the same ABI, assuming you can get the cdv-prv-driver package installed and not 
mesa-dri on your image.
Preferred providers only work for built-time dependencies, so assuming that 
you're having problems with getting mesa-dri out and cdv-prv-driver in the 
image you'll need to use something like RCONFLICTS and RPROVIDES so that the 
package system uses cdv-prv-driver instead of mesa-dri.

Ross
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