Communicator.cs: error CS0246: The type or namespace name 'Serialization' could not be found

[jmp75]

For reference, as of recent commit

LOCAL_DIR=${HOME}/local # or where you can install if you cannot 'sudo make install'
sh autogen.sh
./configure --prefix=$LOCAL_DIR
make

[jmp75]

This happens only on Linux - build on windows was fine. autogen.sh inputs must have a missing reference to Serialization.cs.