$OpenBSD$
--- Makefile.orig	Fri Apr 26 00:49:58 2013
+++ Makefile	Fri Apr 26 00:50:45 2013
@@ -2,7 +2,8 @@
 
 PYTHON?=python
 WAF_BINARY=$(PYTHON) ./buildtools/bin/waf
-WAF=WAF_MAKE=1 $(WAF_BINARY)
+WAF_ARGS?=
+WAF=WAF_MAKE=1 $(WAF_BINARY) $(WAF_ARGS)
 
 all:
 	$(WAF) build