$NetBSD: patch-ae,v 1.1 2011/01/07 04:15:37 obache Exp $

* use preferred libpcap.

--- Build.orig	2006-03-16 07:44:34.000000000 +0000
+++ Build
@@ -34,9 +34,10 @@ fi
 
 GMAKE_OK=`which gmake 2>/dev/null`
 
+test "$LIBPCAP_PREFIX" = "" && LIBPCAP_PREFIX="/usr"
 USE_BPF="pcap-bpf.h"
 
-if [ ! -f "/usr/include/$USE_BPF" -a ! -f "/usr/local/include/$USE_BPF" ]; then
+if [ ! -f "$LIBPCAP_PREFIX/include/$USE_BPF" ]; then
   USE_BPF="net/bpf.h"
 fi