Egypt is a simple tool for creating call graphs of C programs. Egypt neither analyzes source code nor lays out graphs. Instead, it leaves the source code analysis to GCC and the graph layout to Graphviz, both of which are better at their respective jobs than egypt itself could ever hope to be. Egypt is simply a very small Perl script that glues these existing tools together.
The most recent release of egypt is version 1.10, which can be downloaded here. Online documentation is here. You will also need gcc, Perl, and Graphviz.
To install, extract the compressed tar file, cd to the egypt directory, and type
perl Makefile.PL make make install
for additional information.
Here is an example of a call graph generated using egypt: