I built this project on qt 4.8 ubuntu 12.04(working) and now building it on qt 5.3 ubuntu 14.04 . I am getting following error while compiling
error: mainwindow.o: undefined reference to symbol
'_ZN12QtConcurrent16ThreadEngineBase16setProgressValueEi'
error: error adding symbols: DSO missing from command line
/usr/lib/x86_64-linux-gnu/libQtCore.so.4:
.pro file
QT += serialport
QT += widgets
QT += network
QT += core
...
...
LIBS += "/usr/lib/x86_64-linux-gnu/libqjson.so.0"
no Idea what to do .. has any one came across this problem before.