Directory structure

Ignoring all extraneous files, this is the structure that this project uses:

project-name/
├── CMakeLists.txt
├── cmake
├── doc/
│   ├── CMakeLists.txt
│   ├── Doxyfile.in
│   ├── directory_structure.md
│   ├── main_page.md
│   ├── manual.md
│   └── ...
├── examples/
│   ├── CMakeLists.txt
│   ├── simple_simulation.cpp
│   └── ...
├── res/
│   ├── equationofstate
│   ├── examples
│   └── test
├── src/
│   ├── config.hpp.in
│   └── ...
├── test/
│   ├── CMakeLists.txt
│   ├── debug.hpp
│   ├── debug.cpp
│   ├── test_runner.cpp
│   └── ...
├── third_party/
│   └── doctest/
│       └── doctest.h
└── tools/
    └── profile_slider.py

This may all look very complex, but here is an explanation of all of the directories:

Directory	Purpose
cmake	Contains all CMake related configuration files.
doc	Contains Doxygen configuration files, which can be used to create documentation for the project using the CMake target doc.
examples	Contains examples that show how to use the application.
res	Contains different resources required to run the application.
src	Contains the source code for the application. Private level includes and implementations are also in this directory.
test	Contains test files to unit test the application.
third_party	Contains CMake configuration files for third party dependencies or single header files for projects with single includes.
tools	Contains different useful tools, for example for analysis of results.