That'd be 2.0.1, not 2.0.4.
I was just saying that 2.0.4 is the implied minimum version, or at least the lowest tested version, so I'm not sure there's anything to be gained putting in anything lower than SDL_Linked_Version_AtLeast(2, 0, 5). Especially because it just makes the code more annoying to read.
You also need a post-2015 CMake, for example. And a post-2014 gcc.