Is mxnet-tensorrt integration available in C++?

I have seen the document here,
https://cwiki.apache.org/confluence/display/MXNET/How+to+use+MXNet-TensorRT+integration#HowtouseMXNet-TensorRTintegration-BaselineMXNetNetworkPerformance

Is this feature available in C++ ?

If I want to use this feature in C++, do I need to compile mxnet from the source?

But I meet problems at the beginning with onnx-tensorrt.

any instructions ?? thank you !