How to use "xxx_op.h" in modules

Hello,
I’am new to pytorch and other deep learning frameworks.

I want to use the “Position seneitive roi pooling” and found related codes in github -> pytorch -> modules -> detectron -> “ps_roi_pool_op.h”, “ps_roi_pool_op.cc”, “ps_roi_pool_op.cu”.

So… Could you tell me How to compile or import theses codes?

Thank you in advance.