Created attachment 203868 [details] patch USES=autoreconf will make modifications to fix GCC actually be used and will fix build.
A commit references this bug: Author: ale Date: Tue Apr 30 13:38:10 UTC 2019 New revision: 500489 URL: https://svnweb.freebsd.org/changeset/ports/500489 Log: Really fix build on GCC based architectures (missing part of previous commit). PR: 237442 Submitted by: pkubaj Changes: head/security/opensc/Makefile