Doxygen

To use Doxygen to document your source code on Ubuntu, first install doxygen and graphviz:

$ sudo apt-get install doxygen

$ sudo apt-get install graphviz

To generate a doxygen configuration file:

$ doxygen -g # this will generate a configuration file named Doxyfile

Then, edit Doxyfile. In my case, I only modified:

OUTPUT_DIRECTORY = doc

HAVE_DOT = YES

CALL_GRAPH = YES

CALLER_GRAPH = YES

Then run

$ doxygen Doxyfile

Doxygen will automatically find your source code if Doxyfile is placed in the same directory. The resulting documentations are in doc.

For more detail:

http://www.stack.nl/~dimitri/doxygen/index.html