Cross compile with USE_TVM_OP=ON

[jasaw]

I'm cross compiling mxnet with USE_TVM_OP=ON for aarch64 on an x64_86 host. Everything went well, except for the last step where it's calling contrib/tvmop/compile.py where the python script imports the host (x64_86) tvm libtvm.so and attempts to build libtvmop.so. I have a target (aarch64) libtvm.so that I've just cross compiled but obviously that's not going to load on my x64_86 host..

How do I build libtvmop.so then? Why do we have a python compile.py and not cmakelist like the rest of the project?