# Arrow Flight RPC System for C++ ## Development notes The gRPC protobuf plugin requires that libprotoc is in your `LD_LIBRARY_PATH`. Until we figure out a general solution, you may need to do: ``` export LD_LIBRARY_PATH=$PROTOBUF_HOME/lib:$LD_LIBRARY_PATH ``` Currently, to run the unit tests, the directory of executables must either be your current working directory or you need to add it to your path, e.g. ``` PATH=debug:$PATH debug/flight-test ```