git clone https://github.com/emqtt/qmqtt.git
cd qmqtt
mkdir build
cd build
qmake -r ..
make
sudo make install

git clone git://code.qt.io/qt/qtmqtt.git
cd qtmqtt
mkdir build
cd build
/home/ecat/bin/Qt/5.10.1/gcc_64/bin/qmake -r ..
make
sudo make install