Index: src/OFFile.m
==================================================================
--- src/OFFile.m
+++ src/OFFile.m
@@ -14,14 +14,17 @@
  * file.
  */
 
 #include "config.h"
 
+#define __NO_EXT_QNX
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
+
 #include <unistd.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>

Index: src/OFObject.m
==================================================================
--- src/OFObject.m
+++ src/OFObject.m
@@ -14,14 +14,18 @@
  * file.
  */
 
 #include "config.h"
 
+#define __NO_EXT_QNX
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+
 #include <unistd.h>
+
 #include <assert.h>
 
 #import "OFObject.h"
 #import "OFAutoreleasePool.h"
 

Index: src/OFStream.m
==================================================================
--- src/OFStream.m
+++ src/OFStream.m
@@ -14,16 +14,19 @@
  * file.
  */
 
 #include "config.h"
 
+#define __NO_EXT_QNX
+
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <assert.h>
+
 #include <fcntl.h>
 
 #ifndef _WIN32
 # include <signal.h>
 #endif

Index: src/OFStreamObserver.m
==================================================================
--- src/OFStreamObserver.m
+++ src/OFStreamObserver.m
@@ -15,10 +15,11 @@
  */
 
 #include "config.h"
 
 #define OF_STREAM_OBSERVER_M
+#define __NO_EXT_QNX
 
 #include <string.h>
 
 #include <assert.h>
 

Index: src/OFStreamSocket.m
==================================================================
--- src/OFStreamSocket.m
+++ src/OFStreamSocket.m
@@ -14,12 +14,16 @@
  * file.
  */
 
 #include "config.h"
 
+#define __NO_EXT_QNX
+
 #include <string.h>
+
 #include <unistd.h>
+
 #include <errno.h>
 
 #ifndef _WIN32
 # include <sys/types.h>
 # include <sys/socket.h>

Index: src/OFTCPSocket.m
==================================================================
--- src/OFTCPSocket.m
+++ src/OFTCPSocket.m
@@ -14,13 +14,16 @@
  * file.
  */
 
 #include "config.h"
 
+#define __NO_EXT_QNX
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+
 #include <unistd.h>
 
 #include <assert.h>
 
 #ifndef _WIN32

Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -13,10 +13,12 @@
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
 #include "config.h"
+
+#define __NO_EXT_QNX
 
 #ifndef _WIN32
 # include <unistd.h>
 # include <sched.h>
 #else

Index: src/OFXMLParser.m
==================================================================
--- src/OFXMLParser.m
+++ src/OFXMLParser.m
@@ -17,11 +17,12 @@
 #include "config.h"
 
 #define OF_XML_PARSER_M
 
 #include <string.h>
-#include <unistd.h>
+
+#include <sys/types.h>
 
 #import "OFXMLParser.h"
 #import "OFString.h"
 #import "OFArray.h"
 #import "OFDictionary.h"