QtGui requires explicit linking with -lGLESv3 on Android

In a CMake-based project, when linking with the module QtGui for the Android platform, an OpenGL ES library has to be linked in manually; the QtGui CMake files do not drag in that dependency automatically.

I have to have the following in CMakeLists.txt:

target_link_libraries(myapp Qt5::Gui)
if(ANDROID)
    target_link_libraries(myapp -lGLESv3)
endif()