$NetBSD: patch-ai,v 1.6 2015/09/26 10:16:38 leot Exp $

--- Source/WTF/wtf/ThreadIdentifierDataPthreads.cpp.orig	2015-09-14 07:08:10.000000000 +0000
+++ Source/WTF/wtf/ThreadIdentifierDataPthreads.cpp
@@ -39,6 +39,12 @@
 #if OS(HURD)
 // PTHREAD_KEYS_MAX is not defined in bionic nor in Hurd, so explicitly define it here.
 #define PTHREAD_KEYS_MAX 1024
+#elif OS(NETBSD)  
+#include <limits.h>
+// PTHREAD_KEYS_MAX is not defined in 5.x
+#ifndef PTHREAD_KEYS_MAX
+#define PTHREAD_KEYS_MAX 256
+#endif  
 #else
 #include <limits.h>
 #endif