No need for the old-GCC patch. Instead just have OpenBSD builds use clang. It worked! $ bin/nim --version Nim Compiler Version 1.2.0 [OpenBSD: amd64] Compiled at 2020-04-03 Copyright (c) 2006-2020 by Andreas Rumpf git hash: 7e83adff84be5d0c401a213eccb61e321a3fb1ff active boot switches: -d:release Run
** build.sh ** added line 92: *openbsd* ) myos="openbsd" CC="clang" Run **config /nim.cfg** added line 202: @if freebsd or openbsd or netbsd: cc = clang Run That's all it took! Works great.