$NetBSD: patch-ae,v 1.2 2006/11/13 16:59:22 wulf Exp $

--- gnuradio-core/src/lib/io/gr_file_sink.cc.orig	2006-09-14 07:00:04.000000000 +0930
+++ gnuradio-core/src/lib/io/gr_file_sink.cc	2006-10-13 23:26:50.000000000 +0930
@@ -30,6 +30,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <stdexcept>
 
 // win32 (mingw/msvc) specific