If you work on -current, please make sure you have the current infrastructure and to read bsd.port.mk(5) and friends.
Specifically: MASTER_SITES0..9 is dead prefer DISTFILES.sufx to refer to SITES.sufx Also: MASTER_SITES* is dead. We decided to replace it with the much shorter (with no loss of meaning) SITES* The tree has been entirely converted, and the compatibility glue has been removed: new stuff must use the new mechanisms.