Created attachment 203558 [details]
devel/poco-ssl is deprecated. clamfs builds fine with devel/poco as well.
Can you verify runtime too?
A commit references this bug:
Date: Wed Apr 24 06:08:31 UTC 2019
New revision: 499814
security/clamfs: Switch to devel/poco
poco-ssl will expire soon.
Approved by: firstname.lastname@example.org (maintainer timeout, 2 weeks)