qt5base-lts/mkspecs/features/android/android.prf

contains(TEMPLATE, ".*app") {
    !android_app {
        !contains(TARGET, ".so"): TARGET = lib$${TARGET}.so
        QMAKE_LFLAGS += -Wl,-soname,$$TARGET

        android_install: {
            target.path=/libs/$$ANDROID_TARGET_ARCH/
            INSTALLS *= target
        }
    }
}