compiling error

[ywangwxd]

I do not know if it is the problem of of enviroment. I cannot compile the example project successfully. It complains something like this, libav-cpp/av/Decoder.hpp:81:26: error: ‘Packet’ has not been declared

It seems that the complier cannot find the header files under av/ directory. But I see it is right when checking message("AV files: ${AV_FILES}")

What is wrong with it? I did not make any change from the git repo.