diff -r dee5afe5301f -r 3f74d0d4af4c src/corelib/codecs/qtextcodec.h
--- a/src/corelib/codecs/qtextcodec.h	Mon Mar 15 12:43:09 2010 +0200
+++ b/src/corelib/codecs/qtextcodec.h	Thu Apr 08 14:19:33 2010 +0300
@@ -170,8 +170,10 @@
 
     friend class QXmlStreamWriter;
     friend class QXmlStreamWriterPrivate;
+#if defined(Q_OS_MAC32) || defined(Q_OS_AIX)
     friend class QCoreXmlStreamWriter;
     friend class QCoreXmlStreamWriterPrivate;
+#endif
 };
 
 class Q_CORE_EXPORT QTextDecoder {