Cannot run QtSerialPort apps on Raspberry Pi 2 Qt 4.8.2

Hi,
Until now I has happily using the default Qt install that comes with Raspberry Pi (4.8.2). All I had to do was get qtserialport from git.

Today trying to setup the qtserialport on a new RPi 2 I get the following errors when trying to build a Qt application which uses qtserialport. I think it it related to http://code.qt.io/cgit/qt/qtserialport.git/commit/?h=qt4-dev&id=d15bf9d678085c4572068c84db884e9a72e98b84

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g++ -Wl,-O1 -o AWSAM5BS main.o serialhandle.o moc_serialhandle.o -L/usr/lib/arm-linux-gnueabihf -lQtSerialPort -lQtNetwork -lQtCore -lpthread

/usr/lib/arm-linux-gnueabihf/libQtSerialPort.so: undefined reference to `QSerialPort::dataErrorPolicyChanged(QSerialPort::DataErrorPolicy)'

/usr/lib/arm-linux-gnueabihf/libQtSerialPort.so: undefined reference to `QSerialPort::settingsRestoredOnCloseChanged(bool)'

collect2: ld returned 1 exit status
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Thanks