Error info:
Linking CXX executable ../../bin/example_dnn_caffe_googlenet
../../lib/libopencv_dnn.so.3.1.0: undefined reference to `google::protobuf::......so on
Solution:
Method 1: reinstall protobuf or upgrade.
sudo apt-get install --upgrade libprotobuf-dev
if false,please get into method 2.
Method 2: install protobuf by source,you need choose suitable version
url https://github.com/google/protobuf/releases
decompression and enter directory
input command:
./autogen.sh
./configure --prefix=<your install path>
make
sudo make install
Get into your install path
add bin/ /include /lib to environment variables
or copy
sudo cp bin/protoc /usr/bin
sudo cp -r include/google /usr/include
sudo cp -r lib/* /usr/lib
