Use System SDL2 As Failsafe

[ghost]

Attempt #2, but correctly solving it this time! (Until SDL3, where you don't have to worry about this, because they decided to then do it like every other library ever)

The code works, I tested (except the SDL_LIBRARY_PATH but should just work the same).
On Windows this doesn't do anything because I don't know if shell works the same there.

Other than that, if there are issues with the code/looks bad, tell me.

[Peter0x44]

What's the purpose of the shell if statement?

[raysan5]

@mr-sihc Sorry, I can't see the need for those additions. It adds a considerable level of complexity to the Makefile to support a specific use case.

[ghost]

@mr-sihc Sorry, I can't see the need for those additions. It adds a considerable level of complexity to the Makefile to support a specific use case.

it's not actually very specific, SDL is not built standard and anyone who wants to, has to clone it in seperatley, or change the dir

i even put in a comment that says exactly what it does its like 6 lines come on

What's the purpose of the shell if statement?

to check if the SDL_... path is not there, so to activate the failsafe

[Peter0x44]

@mr-sihc I wouldn't bother checking