> OK.  Can you show the preprocessed source of fns.c?  (Let me know if
> you need help in how to produce it.)

I've tried to produce it, by adding this rule to the file
"build-dir/src/Makefile":

  fns.i: fns.c
   $(AM_V_CC)$(CC) -E $(CPPFLAGS) $(ALL_CFLAGS) $(PROFILING_CFLAGS) $< > $@

and then doing:
  cd build-dir/src
  make fns.i

I'm attaching the preprocessed source.  Let me know if this is not
what you want.

-- 
Dani Moncayo