Source : Free On-Line Dictionary of Computing

cextract
     
         A {C} {prototype} extractor by Adam Bryant
        .  It can generate {header files} for large
        multi-file C programs, and will automatically generate
        prototypes for all of the functions in such a program.  It can
        also generate a sorted list of all functions and their
        locations.  cextract version 1.7 works with both {ANSI C} and
        {K&R C} and runs under {Unix} and {VMS}.
     
        Posted to comp.sources.reviewed.
     
        (1992-11-03)