Doxygen has built-in support to generate inheritance diagrams for C++ classes.

Doxygen can use the “dot” tool from graphviz to generate more advanced diagrams and graphs. Graphviz is an open-source, cross-platform graph drawing toolkit and can be found at https://www.graphviz.org/

If you have the “dot” tool in the path, you can set HAVE_DOT to YES in the configuration file to let doxygen use it.

Doxygen uses the “dot” tool to generate the following graphs: