If your perl version is between 5.10.0 and 5.24.x, then add http://www.sisyphusion.tk/ppm/ to your repo list and run simply:

ppm install SDL
[download]

That should give you all you need - get back to us if it doesn't.

I haven't built SDL ppm packages for later versions of perl outside of that range, and I won't be.
In fact, that ppm repository should cease to exist in about 10 months time.

Cheers,
Rob