Created attachment 198215 [details] patch -Wno-c++11-narrowing is unavailable in base GCC. It's enough to add USE_CXXSTD=c++98, this makes this port build with both base GCC and LLVM. Tested on powerpc64 and amd64. Hardware sponsored by IntegriCloud.
Created attachment 198220 [details] v2 Small correction, additional fix is necessary.
A commit references this bug: Author: linimon Date: Sun Oct 28 19:35:20 UTC 2018 New revision: 483328 URL: https://svnweb.freebsd.org/changeset/ports/483328 Log: Fix build on powerpc64. PR: 232325 Submitted by: Piotr Kubaj Approved by: portmgr (tier-2 blanket) Changes: head/games/spacejunk/Makefile head/games/spacejunk/files/patch-src_pmask.h