Created attachment 197271 [details] patch Base GCC defaults to C89, while this port uses C99. That makes building with base GCC to fail. Define USE_CSTD=c99 to fix this. Tested on powerpc64 and amd64.
A commit references this bug: Author: linimon Date: Sun Sep 23 05:10:39 UTC 2018 New revision: 480454 URL: https://svnweb.freebsd.org/changeset/ports/480454 Log: Fix build on gcc-based archs. Also tested on amd64. PR: 231509 Submitted by: Piotr Kubaj Approved by: portmgr (tier-2 blanket) Changes: head/devel/serd/Makefile