The source code is unchanged with respect to the previous recipe and the structure of the project is as follows:

.
├── cmake
│   └── messageConfig.cmake.in
├── CMakeLists.txt
├── src
│   ├── CMakeLists.txt
│   ├── hello-world.cpp
│   ├── Message.cpp
│   └── Message.hpp
└── tests
    ├── CMakeLists.txt
    └── use_target
        ├── CMakeLists.txt
        └── use_message.cpp

Notice that we have added a cmake subdirectory containing a messageConfig.cmake.in file. This file will contain our exported targets. We have also added a test to check whether the installation and export of the project work as intended.