qdbus build error

[Mathew Yeates]

after modifying src.pro with
INCLUDEPATH += $$(DBUSDIR)/include
I now get compiler errors such as the following

qdbusmetatype.cpp
c:\qt-win-preview-opensource-src-4.2.0-tp1\src\corelib\kernel\qmetatype.h(151) 
: error C2039: 'qt_metatype_id' : is not a member of 'QMetaTypeId<T>'
        with
        [
            T=QDate
        ]
        
c:\qt-win-preview-opensource-src-4.2.0-tp1\tools\qdbus\src\qdbusmetatype.cpp(64) 
: see reference to function template instantiation 'int qMetaTypeId<T>(T 
*)' being compiled
        with
        [
            T=QDate
        ]
        
c:\qt-win-preview-opensource-src-4.2.0-tp1\tools\qdbus\src\qdbusmetatype.cpp(90) 
: see reference to function template instantiation 'void 
registerHelper<QDate>(T *)' being compiled
        with
        [
            T=QDate
        ]
c:\qt-win-preview-opensource-src-4.2.0-tp1\src\corelib\kernel\qmetatype.h(151) 
: error C3861: 'qt_metatype_id': identifier not found