Requirements (on Linux install them from your package manager):
To generate the Doxygen API documentation under doc/html format (default) from the existing Doxyfile (edit Doxyfile to change options):
$ cd ADIOS2/docs/api $ doxygen
A "ADIOS2/docs/api/html" directory is generated, open any .html file inside this directory (e.g. index.html) on your favorite browser.