github.com/johnnyeven/libtools@v0.0.0-20191126065708-61829c1adf46/third_party/toolchains/preconfig/centos6 (about) cuda10.0-cudnn7 cuda10.1-cudnn7 gcc7-nvcc-cuda10.0 gcc7-nvcc-cuda10.1 gcc7 py py3 tensorrt5