protoc错误：该文件由较新版本生成

    if GOOGLE_PROTOBUF_VERSION < 2004000
    #error This file was generated by a newer version of protoc which is
    #error incompatible with your Protocol Buffer headers.  Please update
    #error your headers.
    endif
    if 2004001 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
    #error This file was generated by an older version of protoc which is
    #error incompatible with your Protocol Buffer headers.  Please
    #error regenerate this file with a newer version of protoc.
    endif