Yocto Poky/Thud not enabling eglfs and OpenGL ES 2.0

[sdcandy]

I am trying to build a minimal image using Yocto Poky/Thud for the TI AM335x using meta-ti and meta-qt5 to get Qt to sit on top of the ELGFS support provided by the PowerVR SGX drivers.

When it tries to build qtbase (5.11.3+gitAUTOINC+08de243eaa) it errors out with the following:

ERROR: Feature 'eglfs' was enabled, but the pre-condition '!config.android && !config.darwin && !config.win32 && features.egl' failed.

In the preceding output there is:

|   OpenGL:
|     Desktop OpenGL ....................... no
|     OpenGL ES 2.0 ........................ no
|     OpenGL ES 3.0 ........................ no
|     OpenGL ES 3.1 ........................ no
|     OpenGL ES 3.2 ........................ no
...
| QPA backends:
|   DirectFB ............................... no
|   EGLFS .................................. no
|   LinuxFB ................................ yes
|   VNC .................................... yes
|   Mir client ............................. no

Somehow I seem to have managed to disable (or not enable) the right bits for eglfs and the OpenGL ES 2.0 it supports.

I have been banging my head against this for a while now and need someone to put me out of my misery and tell me what I have done wrong!

-Andy.