Index: src/OFStream.m
==================================================================
--- src/OFStream.m
+++ src/OFStream.m
@@ -29,11 +29,11 @@
 # include <fcntl.h>
 #endif
 
 #include "platform.h"
 
-#ifndef OF_WINDOWS
+#if !defined(OF_WINDOWS) && (!defined(OF_MORPHOS) || defined(OF_IXEMUL))
 # include <signal.h>
 #endif
 
 #import "OFStream.h"
 #import "OFStream+Private.h"
@@ -54,11 +54,11 @@
 #define MIN_READ_SIZE 512
 
 @implementation OFStream
 @synthesize of_waitingForDelimiter = _waitingForDelimiter;
 
-#ifndef OF_WINDOWS
+#if !defined(OF_WINDOWS) && (!defined(OF_MORPHOS) || defined(OF_IXEMUL))
 + (void)initialize
 {
 	if (self == [OFStream class])
 		signal(SIGPIPE, SIG_IGN);
 }