>I wonder if it would be possible to make a "meta-framework" that uses a single code-base to compile user written code into source code written in those 3 frame

>I wonder if it would be possible to make a "meta-framework" that uses a single code-base to compile user written code into source code written in those 3 frameworks respectively. Just no. As an Apple user, just use whatever the tools they give you when you're developing for Apple platforms.