1) Download the Mac disk image of Doxygen and install the application.

2) Download my Doxygen config file. Adapted from Ticket #5910.

3) Create a directory in your app/webroot/ named api.

4) Open Doxygen and open the config file.

5) Double check the Source code directory and Destination directory are correct for your setup.

6) Switch to the Run tab and hit run.

That's it!