$OpenBSD: patch-configure,v 1.1 2015/11/13 12:54:23 ajacoutot Exp $
--- configure.orig	Fri Nov 13 11:14:06 2015
+++ configure	Fri Nov 13 11:13:20 2015
@@ -3435,6 +3435,10 @@ fi
     powerpc-*-darwin*)
         OPENCL_LIBS=""
         ;;
+    *openbsd*)
+        ADD_RT_TRUE='#'
+        ADD_RT_FALSE=
+        ;;
     *)
         # default
          if true; then
