Glproxy in QtOpenCL

[A Former User]

I'm trying to build QtOpenCL on 4.8.0

If the glproxy class in the QtOpenCL source is included the build fails with an error
@QGLSignalProxy::staticMetaObjectExtraData' : definition of dllimport static data member not allowed@

The glproxy class only seems to be used to clean up resources, if I remove it the app will build and execute but crashes on exit.
Is there an alternative to glproxy in 4.8? Or how do I fix it?

@class Q_OPENGL_EXPORT QGLSignalProxy : public QObject
{
Q_OBJECT
public:
QGLSignalProxy() : QObject() {}
void emitAboutToDestroyContext(const QGLContext *context) {
emit aboutToDestroyContext(context);
}
static QGLSignalProxy *instance();
Q_SIGNALS:
void aboutToDestroyContext(const QGLContext *context);
};
@