-Wno-sign-conversion is not supported by base GCC, this patch removes this flag. Without it the port compiles on powerpc64 and amd64. Hardware sponsored by IntegriCloud.
Created attachment 198724 [details] patch Sorry, I forgot to include the patch.
A commit references this bug: Author: linimon Date: Fri Nov 2 01:48:33 UTC 2018 New revision: 483762 URL: https://svnweb.freebsd.org/changeset/ports/483762 Log: -Wno-sign-conversion is not supported by base GCC; remove this flag. PR: 232106 Submitted by: Piotr Kubaj Approved by: portmgr (tier-2 blanket) Changes: head/games/flare-engine/files/ head/games/flare-engine/files/patch-CMakeLists.txt