After all that, \verb|process_symbols()| is called. This routine generates three vectors
containing symbol names: \verb|exported|, \verb|called|, and \verb|unsatisfied|.
The latter is the difference of \verb|called| and \verb|exported|.\\
If desired, those vectors are written out to \verb|out_fd|, one symbol per line.
After all that, \verb|process_symbols()| is called. This routine generates three vectors
containing symbol names: \verb|exported|, \verb|called|, and \verb|unsatisfied|.
The latter is the difference of \verb|called| and \verb|exported|.\\
If desired, those vectors are written out to \verb|out_fd|, one symbol per line.