anchor.diff:      main.cpp
       ${PROTO_SRCS}
       ${PROTO_HDRS})
  ----
  +----
   
   This will cause the protobuf compiler to be called when you call `make` on that
   executables target.
  
positive.code: Generating Source
  ^^^^^^^^^^^^^^^^^
  
  The protobuf CMake package, includes a number of helper functions to make the
  code generation easier. In this example we are generating C++ source and use
  the following code:
  
  
negative.code: Introduction
  ------------
  
  This example shows how to generate source files using https://github.com/google/protobuf[protobuf].
  Protocol Buffers is a data serialization format from Google. A user provides a
  `.proto` file with a description of the data. Then using the protobuf compiler, the proto file
  can be translated into source code in a number of languages including C++.
  