Re: [Qt5] mkspecs/devices: beagleboard == am335x ?

[Christian Gagneraud <chgans@gna.org>]

On 07/27/2013 03:41 PM, Denys Dmytriyenko wrote:
> On Sun, Jul 28, 2013 at 03:18:05AM +1200, Christian Gagneraud wrote:
>> On 07/27/2013 02:20 PM, Sundareson, Prabindh wrote:
>>> The device approach is useful for adding platform specific hooks for
>>> eglfs via EGLFS_PLATFORM_HOOKS_SOURCES, so it is a good thing. So it is
>>> more of a convenience/cleaner way, than anything related to performance.
>>>
>>
>> I do agree with Dennys about the compiler flags, yocto knows what
>> are the best flags for the machine/device.
>> What is nice with the device file approach is the specification for
>> OpenGL includes, libs, QPA and the EGLFS hooks as well.
>> Basically I like the fact that all the OpenGL "mess" is sorted out
>> in one place (when it comes to compilation).
>> Interesting examples are the Rasberry Pi [1] and Freescale i.mx6 [2].
>>
>> when considering Qt alone (out of Yocto/OE), I think as a SoC
>> vendor, it is the best way to make sure your users get the best of
>> Qt5/OpenGL, and very easily according to [3] (not tested).
>>
>>
>> When it comes to Yocto, I didn't see any easy way for meta-bsp to
>> tell meta-qt5 how to configure/build qt5 w/ OpenGL support.
>> It seems to me that the only way is through the .bbappend, in qtbase.inc:
>> [...]
>> # if you want to enable egl/gles2 in your .bbappend, don't forget to
>> add right dependencies, e.g.
>> # GL_DEPENDS = "virtual/libgles2 virtual/egl"
>> # QT_GLFLAGS = "-opengl es2 -eglfs"
>> GL_DEPENDS ?= "virtual/libgl"
>> QT_GLFLAGS ?= "-opengl"
>> [...]
>>
>> Could/should this be used by the meta-ti layer?
>>
>> I spent some time recently going through meta-qt5 recently (as well
>> as the qt4 stuff), I even tried an alternative configure/method, so
>> far unsuccessfully. My feeling is that meta-qt5 tries to adapt qt5
>> to OE, I think it should be done the other way around, that's my
>> very personal view.
>>
>> I really would like to see a Yocto Qt5 SDK one of these days.
>>
>> Prabindh, could you tell more about the status of Qt5/OpenGL for TI
>> SoCs, what about this commit [4]? Is it possible to build within
>> Yocto Qt5 w/ OpenGL support for AM335x platforms?
>
> Have you seen this thread:
> http://thread.gmane.org/gmane.linux.embedded.yocto.meta-ti/2139

No I haven't up to now, thanks for the link.

Regards,
Chris

>