This software checks the headers in a C/C++ program, and detects unnecessary
inclusions. A "#include" is needed if any symbol names match. If there are no
matching symbol names, it is not needed. This tool will work best if all
classes, variables, constants, functions, etc. have unique names.

WWW: http://code.google.com/p/checkheaders/
WWW: https://github.com/anastmag/checkheaders/