Update to SDL 2.0.18

[FrenchDilettante]

Hi,

SDL 2.0.18 has been published and includes a handful of extremely useful new methods, which I would love to use in my Rust program.

What's the procedure to update the SDL2 bindings in sdl2_sys? I'd be happy to open a PR for that if you wish!

[Cobrand]

It's not perfect but you compile rust-sdl2 using use-bindgen (make sure your local SDL2 is 2.0.18), an then copy sdl_binding.rs from target/sdl2-sys-xxxxx/sdl_bindings.rs to sdl2-sys/sdl-bindings.rs

That should do the trick

[tasogare3710]

I generated sdl_bindings.rs for SDL 2.0.18 using the use-bindgen feature and the SDL2_INCLUDE_PATH environment variable, but a compilation error occurred. It seems to be the same problem as rust-lang/rust-bindgen#1556, but the directly cause seems to be not specifying the proper whitelist.

I added only the necessary api's published by SDL2 to the whitelist, and the compilation was successful. This issue is mentioned in #1059 (comment) § Build issues with bindgen.

[alula]

Since 2.0.18 is in bundled master, can embedded sdl_bindings.rs be updated to 2.0.18?