Obviously you should first download and install Doxygen
Next, you should download and install Graphviz which will install the dot tool
in a nutshell, you create the documentation by running:
my_conf_file contains all the required parameters for the generated documentation. If you use the doxygen wizard from the UI, a configuration file will be generated with some default parameters, however you need to change the following parameters in the generated configuration file if you want caller and/or called function graphs to be generated:
HAVE_DOT = YES EXTRACT_ALL = YES EXTRACT_STATIC = YES CALL_GRAPH = YES CALLER_GRAPH = YES MAX_DOT_GRAPH_DEPTH = 10
Note that if you use the above parameters on a non-trivial code base then the documentation generation might take a long time. Read the doxygen documentation to better understand the implications.