Since some years, I have searched for an elegant solution to generate call graphs out of C++ source code. Today I found it. It is doxygen. I have evaluated doxygen years ago, but I threw it away. The reason is that you have to know two things about doxygen:

• Do not call doxygen, start with doxywizard and everything goes straightforward.
• You will run into an error message "Error opening map file *.map for inclusion in the docs!" and you need to resolve it as described on http://mihirknows.blogspot.com/2008/03/error-opening-map-file-map-for.html

So, have fun with your call graphs!