Cannot built latest master on Ubuntu 16.04 xenial

[mistral77]

Hello

I believe ,that ffmpeg libraries that ppa is installing on ubuntu 16.04 are not capable for hardware acceleration , so I'm trying to build from source with the latest ffmpeg 4 witch do hardware acceleration (vaapi)!

Please look at the build process below and help me to find the reason that it fails.

zm.txt

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Thank you!

[iconnor]

The submodule for CRUD got reverted back to our version which we deleted.

I have fixed master. Try again.