use available CPU instructions

Author: jhjin

CMakeLists.txt

@@ -41,8 +41,8 @@ ExternalProject_Add(${PROJECT_NAME}-ext
  TF_CUDA_COMPUTE_CAPABILITIES=3.5,5.2
  ./configure
 
- BUILD_COMMAND bazel build -c opt -j 200 ${TF_BUILD_CUDA} //tensorflow:libtensorflow.so
- //tensorflow/tools/pip_package:build_pip_package
+ BUILD_COMMAND bazel build -c opt -j 200 --config=opt ${TF_BUILD_CUDA} //tensorflow:libtensorflow.so
+  //tensorflow/tools/pip_package:build_pip_package
  INSTALL_COMMAND cp <SOURCE_DIR>/bazel-bin/tensorflow/libtensorflow.so ${CMAKE_SOURCE_DIR}/lib 
  COMMAND <SOURCE_DIR>/bazel-bin/tensorflow/tools/pip_package/build_pip_package ${CMAKE_SOURCE_DIR}/lib
  COMMAND /bin/bash -c "wheel unpack ${CMAKE_SOURCE_DIR}/lib/tensorflow-*.whl"