In this chapter, we went through a long journey of learning how to empower Qt's cross-platform capability and created our first application for embedded devices. We learned how to set up an embedded Linux image and write it onto an SD card or thumb drive to run it on the device.

Then, we learned how to cross-compile a Qt project from a Windows machine and export it to the Linux device. This really is a time-saving approach as embedded devices are often not powerful enough for compiling source code, and therefore it is really handy for us to be able to compile it using a different, more powerful setup and deliver it to our production device remotely without even connecting it with a USB cable.

Other than that, we also learned how to configure the Qt framework and reduce its size so that it can fit into the embedded device. This is really important because embedded...