Automatically discovering C dependencies

Question

I\'m required to write documentation for my current project that lists all .c files and for each one lists every .h file which is directly or indirectly included by that fil

Answer 1

An alternative to gcc -M is fastdep. Fastdep's author reports fastdep to be ten times faster than gcc's -M. If the project takes a while to build, fastdep may be worth a look.