M93: problems in graphics subroutines

 Dear Netters,
 	When I tried to install the graphics subroutines of MOPAC93R2 (bz,
 density, etc.) in a IBM RS6000 I had problems in linking object files.We
 compile all the routines with sucess. In linking with xlf the external
 reference xwin was not found, despiste the object (xdrvr.c) that
 contains this routine was ok. What is happening?
 	Thank you,