This work will be redone as a bsd.hardening.exceptions.mk file. OPNsense's ports sync script would overwrite the port Makefile. This reverts commit 1b4cfac052.
1b4cfac052
Taken from: https://github.com/freebsd/freebsd-ports.git Commit id: 5070672073b68be364139bc6b3a89100bd17d331