Building .so (no apk deployment) leads to error 'No rule to make target 'install'.'

I'm building a .so file for Android using QtCreator. My .pro file has:

TEMPLATE = lib
CONFIG += shared 

When I compile, the .so file is correctly generated. However, just after that, QtCreaor reports and error: "make: *** No rule to make target 'install'. Stop.".

That's expected, there is nothing to install. This should not produce an error.