Function aliasing (was Feedback-Directed Optimization problem)

Fri Apr 4 13:20:38 PDT 2008

I ran into a problem with missing symbols like _close$UNIX2003 and  
discovered it was an error with libgcov and linking with 10.4SDK.  So  
to solve it I've been trying to make symbol aliases passing -alias  
_close _close$UNIX2003 or putting int close$UNIX2003(int d)  
__DARWIN_ALIAS(close) in the source but none seem to work.  Is there a  
proper way to do this?