Compilation error on latest master

[Willem Ferguson]

compiling configuredivecomputerthreads.cpp
configuredivecomputerthreads.cpp: In member function ‘virtual void 
FirmwareUpdateThread::run()’:
configuredivecomputerthreads.cpp:1532:76: error: 
‘hw_ostc3_device_fwupdate’ was not declared in this scope
     rc = hw_ostc3_device_fwupdate(m_data->device, 
m_fileName.toUtf8().data());
^
make: *** [.obj/configuredivecomputerthreads.o] Error 1

I run Ubuntu 14.04 LTS wth Qt5.2 apparently successfully installed. If I 
type qmake -v I get:
QMake version 3.0
Using Qt version 5.2.1 in /usr/lib/x86_64-linux-gnu

But this error does not look like a Qt problem.
Any help is appreciated a lot.
Kind regards,
willem