caffe Makefile config file 的解析

    # Refer to http://caffe.berkeleyvision.org/installation.html
    # Contributions simplifying and improving our build system are welcome!
    
    # cuDNN acceleration switch (uncomment to build with cuDNN).
    # USE_CUDNN := 1
    "CuDNN是NVIDIA专门针对Deep Learning框架设计的一套GPU计算加速库，用于实现高性能的并行计算,在有GPU并且安装CuDNN的情况下可以打开即将注释去掉。"
    
    # CPU-only switch (uncomment to build without GPU support).
    #CPU_ONLY := 1
    "表示是否用GPU,如果只有CPU这里要打开"
    
    # uncomment to disable IO dependencies and corresponding data layers
    USE_OPENCV := 1
    "因为要用到OpenCV库所以要打开，下面这两个选项表示是选择