Created attachment 156045 [details]
A recent change to the ports base triggered a bug in the NCBI-BLAST+ configure script, where --localstatedir is actually supported, but the syntax check on the command line flag was incorrect.
A commit references this bug:
Date: Mon May 4 06:09:00 UTC 2015
New revision: 385376
Submitted by: firstname.lastname@example.org(maintainer)