Can not build ffmpeg with gpu acceleration on TX2

I run command like this:

but this output an error like :
ERROR: cuvid requested, but not all dependencies are satisfied: cuda

If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the mailing list or IRC #ffmpeg on
Include the log file “ffbuild/config.log” produced by configure as this will help
solve the problem.

Someone know why?

The version of FFmpeg I compiled is 3.4.

Hi, it is not supported. Please refer to