*`Qt-5.12.4_5.13.0`: this has OpenSSL 1.1.x which can be used **ONLY** with Qt 5.12.4 and 5.13.0. Be aware that on Android 5 (API 21) these libs names are clashing with the system SSL libs which are using OpenSSL 1.0, this means your Qt app will fail to use OpenSSL 1.1 as the system ones are already loaded by the OS.
To add OpenSSL in your CMake project, append the following to your project's `CMakeLists.txt` file, anywhere before the find_package() call for Qt5 modules: