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A clean build of the current SVN tree results in:

[ 31%] Building CXX object mscore/CMakeFiles/mscore.dir/scscore.cpp.o
/usr/local/Trolltech/Qt-4.6.0/include/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId2::qt_metatype_id() [with T = char [10]]’:
/usr/local/Trolltech/Qt-4.6.0/include/QtCore/qmetatype.h:210: instantiated from ‘int qMetaTypeId(T*) [with T = char [10]]’
/usr/local/Trolltech/Qt-4.6.0/include/QtScript/qscriptengine.h:332: instantiated from ‘QScriptValue qScriptValueFromValue(QScriptEngine*, const T&) [with T = char [10]]’
/home/lvi/mscore/mscore/mscore/scscore.cpp:354: instantiated from here
/usr/local/Trolltech/Qt-4.6.0/include/QtCore/qmetatype.h:200: error: ‘qt_metatype_id’ is not a member of ‘QMetaTypeId’
make[3]: *** [mscore/CMakeFiles/mscore.dir/scscore.cpp.o] Error 1
make[3]: Leaving directory `/home/lvi/mscore/build'
make[2]: *** [mscore/CMakeFiles/mscore.dir/all] Error 2
make[2]: Leaving directory `/home/lvi/mscore/build'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/lvi/mscore/build'
make: *** [release] Error 2