QS之vcom

　　

-2008 | -2002 | -93 | -87

　　choose VHDL 2008, 2002, 1993, or 1987

-explicit

　　resolve ambiguous overloads

-work <libname>

　　specify work library

-check_synthesis

　　turn on synthesis checker

-pslfile <file>

　　external PSL file