Locate unused C++ files & functions

[azagahl]

Hi, I have a monumental, ancient C++ program and was wondering if anyone knew of good tools to track down unused .cpp, and .h files, and functions? The more this monster can be trimmed down, the better!

[azagahl]

Ok, it looks like FlexeLint might be what I need: http://www.pts.com/flxlint.cfm?det=y

But is there a free/OSS tool?