1lib endgrent,getgrent,setgrent 2lib fsid,getfsgid,isfsg sys/types.h sys/fss.h fsg.h -lfsg 3mac fsid sys/types.h sys/fss.h fsg.h 4cat{ 5 #if !_lib_fsid && _mac_fsid 6 #define _lib_fsid 1 7 #endif 8}end 9