demo linux

[CHNEG8805]

我在树莓派上编译demo/linux.报如下的错误，提示找不到protobuf，可是protobuf明明在啊，请问是为什么呢

-- Found PaddlePaddle (include: /usr/include; library: /usr/lib/libpaddle_capi_layers.a, /usr/lib/libpaddle_capi_engine.a)
CMake Warning at FindPaddle.cmake:70 (message):
Cannot find protobuf under /home/paddle/_install/third_party
Call Stack (most recent call first):
FindPaddle.cmake:75 (third_party_library)
CMakeLists.txt:19 (find_package)

-- Found glog: /home/paddle/_install/third_party/glog/lib/libglog.a
-- Found openblas: /home/paddle/_install/third_party/openblas/lib/libopenblas.a
-- Found gflags: /home/paddle/_install/third_party/gflags/lib/libgflags.a
-- Found zlib: /home/paddle/_install/third_party/zlib/lib/libz.a
-- Configuring done
-- Generating done
-- Build files have been written to: /home/paddle/Mobile/Demo/linux/build

[lcxywfe]

"Cannot find protobuf under /home/paddle/_install/third_party"
是不是要git submodule update之类的