that the port otherwise uses files from another port. (Note: support for FILE_DEPENDS is not in bsd.port.mk yet, so it's a no-op for now.)
Submitted by: KIRIYAMA Kazuhiko <kiri@pis.toba-cmt.ac.jp> PR: ports/8233 (part of)
Submitted by: kiri@kiri.toba-cmt.ac.jp PR: 6533, 6588