$NetBSD: patch-ac,v 1.9 2005/05/17 17:06:12 abs Exp $

--- OS/Makefile-NetBSD-a.out.orig	2005-05-04 12:35:39.000000000 +0100
+++ OS/Makefile-NetBSD-a.out
@@ -3,7 +3,7 @@
 # Exim: OS-specific make file for NetBSD (a.out/COFF object format)
 
 CHOWN_COMMAND=/usr/sbin/chown
-CFLAGS=-O
+CFLAGS?=-O2
 
 HAVE_SA_LEN=YES
 HAVE_IPV6=YES