Remove bash from build (#16289)
Summary:
This commit removes the dependency on `build_pytorch_libs.sh` by moving the remaining functionality that is not expressible in cmake into python. Removing the indirection through bash also removes over 300 lines of environment munging code that is incredibly hard to understand because it passes a lot of secret parameters through `os.env`.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16289
Reviewed By: ezyang
Differential Revision: D13821662
Pulled By: zdevito
fbshipit-source-id: d658d26925e3b1169ac1e3d44a159cf8a1f0d9b1
