虽然只是 CPU 版的。。
This PR contains an initial version of support for building TensorFlow
(CPU only) on Windows using CMake. It includes documentation for building
with CMake on Windows, platform-specific code for implementing core functions
on Windows, and CMake rules for building the C++ example trainer
program and a PIP package (Python 3.5 only). The CMake rules support building
TensorFlow with Visual Studio 2015.