[FFmpeg-user] How to compile with D3D11VA support?

[John Klimek]

I'm trying to cross-compile FFmpeg 3.1.1 (but I'll also try 3.1.2 since that was just released) and I can't seem to enable D3D11VA support.  However, DXVA2 is detected and compiles without any problems.

FFmpeg's configure is finding d3d11.h but for some reason it won't enable support for it during compilation.

What can I be missing or what logs can I check to see what's going wrong?