$OpenBSD: patch-Makefile,v 1.13 2015/05/09 08:31:34 jasper Exp $
--- Makefile.orig	Sat May  9 10:10:14 2015
+++ Makefile	Sat May  9 10:10:51 2015
@@ -28,7 +28,7 @@ endif
 ifeq ($(OS),HP-UX)
 CFLAGS := $(OPT) -DNUTDIR=$(NUTDIR) -DFOODDIR=$(FOODDIR)
 else
-CFLAGS := $(OPT) -DNUTDIR=$(NUTDIR) -DFOODDIR=$(FOODDIR)
+CFLAGS += $(OPT) -DNUTDIR=$(NUTDIR) -DFOODDIR=$(FOODDIR)
 endif
 
 CXXFLAGS := $(CFLAGS) `fltk-config --cxxflags`
