auto-dependency usefulness?

[Bryce Schober]

When I first looked at the auto-dependency stuff at 
http://make.paulandlesley.org/autodep.html, I was pretty excited, but 
now I'm not so sure.  What I'd really like is this:

lib/
  foo.h
  foo.c
src/
  main.c

In this scenario, foo.h declares a "library" function defined in foo.c. 
This function is called in main.c, which includes foo.h.  As far as I 
know, this is the generally accepted way to modularize things.  However, 
gcc's dependency generation doesn't trace main.c's dependency on foo.c, 
only on foo.h.  How can this dependency be known?  Or even assumed, 
given that there is a corresponding .c file for .h file?

Thanks.

--
Bryce Schober
Design Engineer
Dynon Avionics, Inc.
www.dynonavionics.com

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