Generate Protocol Buffers files for iOS

This guide shows you how to generate the Protocol Buffers source files for iOS from scratch.

Generate C++ source files from the proto file

1. Download the Protocol Buffers Compiler v3.18.0 on your local machine.

2. Unzip it.

3. Check its version:

   ./bin/protoc --version

   You should have libprotoc 3.18.0.

4. In the Cardboard repository, locate the proto folder and save its path.

5. Generate the Protocol Buffers source files in C++:

   ./bin/protoc --proto_path=$PROTO_FOLDER_PATH --cpp_out=$PROTO_FOLDER_PATH cardboard_device.proto

   You should now have cardboard_device.pb.cc and cardboard_device.pb.h.