Compile QT in an ARM device

Compile QT application in an ARM device

1. Install compiler

apt-get install g++

2. Install required packages

apt-get install qttools5-dev
apt-get install qt5-default

3. Install required modules. Examples:

apt-get install libqt5sql5
apt-get install libqt5serialport5-dev
apt-get install libqt5websockets5-dev

4. Compile

cd my_dir
qmake
make

5. Compiler setup

Download and install CMake from cmake.org. During installation, select the option 'Add CMake to the PATH for all users'.

Go to Control Panel - System, and then to 'Advanced System Setting'. Go to the 'Advanced' tab and click on 'Environment Variables'. Add the MinGW path to the Path variable (in this case, it is C:\Qt\Tools\mingw730_64\bin).

6. Install OpenCV and compile its libraries

Download OpenCV from Sourceforge, then install it (file opencv-4.1.1-vc14_vc15.exe) into the C:\OpenCV\ directory.

Then, go to the CMake directory (C:\Program Files\CMake\bin) and execute cmake-gui.exe.

* Where is the source code: C:/OpenCV/sources
* Where to build the binaries: C:/OpenCV/opencv-build

Click next.

• Specify the generator for this project: MinGW Makefiles
• Specify native compilers
• Compilers C: C:\Qt\Tools\mingw730_64\bin\gcc.exe
• Compilers C++: C:\Qt\Tools\mingw730_64\bin\g++.exe

Click configure for the first time.