Ta的回复 ：xcode运行报这个错 objc[2829]: Class IMUOriginalData is implemented in both /var/containers/Bundle/Application/B13D62F8-5A6D-41CF-B91E-F6C981D192C3/position.app/position (0x1041122a8) and /var/containers/Bundle/Application/B13D62F8-5A6D-41CF-B91E-F6C981D192C3/position.app/position (0x1041122a8). One of the two will be used. Which one is undefined. 2019-03-12 12:28:05.873989+0800 position[2829:1558854] [DYMTLInitPlatform] platform initialization successful [libprotobuf FATAL /Volumes/build-storage/build/3_4_iOS-mac/opencv/3rdparty/protobuf/src/google/protobuf/stubs/common.cc:79] This program was compiled against version 3.2.0 of the Protocol Buffer runtime library, which is not compatible with the installed version (3.5.1).  Contact the program author for an update.  If you compiled the program yourself, make sure that your headers are from the same version of Protocol Buffers as your link-time library.  (Version verification failed in "/Users/liuyiqun01/work/github/Paddle/build_paddle/third_party_ios_os/protobuf/src/extern_protobuf/src/google/protobuf/descriptor.pb.cc".) libc++abi.dylib: terminating with uncaught exception of type google::protobuf::FatalException: This program was compiled against version 3.2.0 of the Protocol Buffer runtime library, which is not compatible with the installed version (3.5.1).  Contact the program author for an update.  If you compiled the program yourself, make sure that your headers are from the same version of Protocol Buffers as your link-time library.  (Version verification failed in "/Users/liuyiqun01/work/github/Paddle/build_paddle/third_party_ios_os/protobuf/src/extern_protobuf/src/google/protobuf/descriptor.pb.cc".)