$OpenBSD: patch-Makefile_in,v 1.1 2009/04/18 09:02:05 sthen Exp $
--- Makefile.in.orig	Sat Apr 18 09:54:34 2009
+++ Makefile.in	Sat Apr 18 09:54:48 2009
@@ -189,4 +189,4 @@ Makefile: Makefile.in
 	    -e 's!@''dotlock@!$(DOTLOCKBASE)!' $@.in > $@
 
 %.o: %.c
-	$(CC) $(CFLAGS) $(DEFS) -c $<
+	$(CC) $(CFLAGS) $(CPPFLAGS) $(DEFS) -c $<