Mobility 1.2 Symbian: sysinfo does not compile

When building sysinfo with QT 4.7.4/Symbian Belle I get the following compile errors:

"D:/MobilityExamples/1.2/examples/sysinfo/dialog.cpp", line 189: Error: #135: class "QtMobility::QSystemDeviceInfo" has no member "hostId"
hostIdLabel->setText(di->hostId());
^
"D:/MobilityExamples/1.2/examples/sysinfo/dialog.cpp", line 211: Error: #135: class "QtMobility::QSystemDisplayInfo" has no member "getOrientation"
QSystemDisplayInfo::DisplayOrientation orientation = di.getOrientation(0);
^
"D:/MobilityExamples/1.2/examples/sysinfo/dialog.cpp", line 403: Warning: #111-D: statement is unreachable
break;
^
"D:/MobilityExamples/1.2/examples/sysinfo/dialog.cpp", line 935: Error: #135: class "QtMobility::QSystemBatteryInfo" has no member "startCurrentMeasurement"
bi->startCurrentMeasurement(currentMeasurementSpinBox->value());