$OpenBSD: patch-Makefile,v 1.2 2020/02/23 17:15:27 tracey Exp $

Index: Makefile
--- Makefile.orig
+++ Makefile
@@ -19,6 +19,9 @@ else
 	ifeq ($(UNAME_S),Darwin)
 		TARGET_OS := osx
 	endif
+	ifeq ($(UNAME_S),OpenBSD)
+		TARGET_OS := freebsd
+	endif
 	ifeq ($(UNAME_S),FreeBSD)
 		TARGET_OS := freebsd
 	endif
