Index: src/OFKernelEventObserver.m
==================================================================
--- src/OFKernelEventObserver.m
+++ src/OFKernelEventObserver.m
@@ -11,12 +11,10 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
-#define __NO_EXT_QNX
-
 #include "config.h"
 
 #include <errno.h>
 
 #import "OFKernelEventObserver.h"

Index: src/OFPollKernelEventObserver.m
==================================================================
--- src/OFPollKernelEventObserver.m
+++ src/OFPollKernelEventObserver.m
@@ -11,12 +11,10 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
-#define __NO_EXT_QNX
-
 #include "config.h"
 
 #include <errno.h>
 
 #ifdef HAVE_POLL_H

Index: src/OFSelectKernelEventObserver.m
==================================================================
--- src/OFSelectKernelEventObserver.m
+++ src/OFSelectKernelEventObserver.m
@@ -13,12 +13,10 @@
  * file.
  */
 
 #include "config.h"
 
-#define __NO_EXT_QNX
-
 #include "platform.h"
 
 #ifdef OF_WINDOWS
 /* Win32 has a ridiculous default of 64, even though it supports much more. */
 # define FD_SETSIZE 1024

Index: src/OFStream.m
==================================================================
--- src/OFStream.m
+++ src/OFStream.m
@@ -11,12 +11,10 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
-#define __NO_EXT_QNX
-
 #include "config.h"
 
 #include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>

Index: src/OFStreamSocket.m
==================================================================
--- src/OFStreamSocket.m
+++ src/OFStreamSocket.m
@@ -16,11 +16,10 @@
 #include "config.h"
 
 #ifndef _XOPEN_SOURCE_EXTENDED
 # define _XOPEN_SOURCE_EXTENDED
 #endif
-#define __NO_EXT_QNX
 #define _HPUX_ALT_XOPEN_SOCKET_API
 
 #include <errno.h>
 #include <string.h>
 

Index: src/OFSystemInfo.m
==================================================================
--- src/OFSystemInfo.m
+++ src/OFSystemInfo.m
@@ -11,12 +11,10 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
-#define __NO_EXT_QNX
-
 #include "config.h"
 
 #include <limits.h>	/* include any libc header to get the libc defines */
 #include <setjmp.h>
 #include <signal.h>

Index: src/OFTCPSocket.m
==================================================================
--- src/OFTCPSocket.m
+++ src/OFTCPSocket.m
@@ -16,11 +16,10 @@
 #include "config.h"
 
 #ifndef _XOPEN_SOURCE_EXTENDED
 # define _XOPEN_SOURCE_EXTENDED
 #endif
-#define __NO_EXT_QNX
 #define _HPUX_ALT_XOPEN_SOCKET_API
 
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>

Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -14,11 +14,10 @@
  */
 
 #include "config.h"
 
 #define _POSIX_TIMERS
-#define __NO_EXT_QNX
 
 #include <errno.h>
 
 #include <stdlib.h>
 #include <math.h>