What is the official release build options?

I was wondering what is the build options for release package? it seems different than what is said on GitHub build from source section. At least for _C.cpython-36m-x86_64-linux-gnu.so, the official build seems static linking cudnn/nccl etc. but what I got from custom build / docker build, it always dynamic linking cudnn / nccl. I known there’s USE_STATIC_CUDNN / USE_STATIC_NCCL which may works for static linking, but still wondering the exactly build options for release build.


I am also interested in this information.
Can anyone share the official release build options?