$NetBSD: patch-aj,v 1.3 2014/02/13 10:10:06 mrg Exp $

--- InOut/libsnd.c.orig	2013-01-07 04:49:34.000000000 -0800
+++ InOut/libsnd.c	2014-02-12 20:49:21.000000000 -0800
@@ -51,7 +51,7 @@
 
 #ifdef PIPES
 # if defined(SGI) || defined(LINUX) || defined(__BEOS__) || defined(NeXT) ||  \
-     defined(__MACH__) || defined(__HAIKU__)
+     defined(__MACH__) || defined(__HAIKU__) || defined(__NetBSD__) || defined(__DragonFly__)
 #  define _popen popen
 #  define _pclose pclose
 # endif