$NetBSD: patch-ad,v 1.1 2011/01/02 17:45:06 jdolecek Exp $

--- bon_io.h.orig	2011-01-02 17:28:45.000000000 +0000
+++ bon_io.h
@@ -33,7 +33,9 @@ private:
   bool m_isopen;
   char *m_name;
   bool m_sync;
+#ifdef O_DIRECT
   bool m_use_direct_io;
+#endif
   const int m_chunk_bits, m_chunk_size;
   int m_chunks_per_file, m_total_chunks;
   int m_last_file_chunks;