$OpenBSD: patch-configure,v 1.2 2019/05/06 16:34:44 kn Exp $

Index: configure
--- configure.orig
+++ configure
@@ -2488,6 +2488,7 @@ build_mac=no
 # Detect the target system
 case "${host_os}" in
     linux*|uclinux*) build_linux=yes;;
+    openbsd*) ;;
     darwin*) build_mac=yes;;
     *) as_fn_error $? "\"OS $host_os is not supported\"" "$LINENO" 5;;
 esac
