The obvious solution is, distribute the source code and build on end user's environment.

Distributing the source code doesn't necessarily mean free software. Since those free software haters(idiots if you ask me), has no problem distributing game assets and compiled binary to the user, why is the source code exception?

If you are idiot enough to want the source code to be secret, just minify and uglify the source code. Uglified source code is as readable as compiled binary.