This macro will evaluate to true if compiled with SDL at least X.Y.Z.
Defined in SDL_version.h
#define SDL_VERSION_ATLEAST(X, Y, Z) \
((SDL_MAJOR_VERSION >= X) && \
(SDL_MAJOR_VERSION > X || SDL_MINOR_VERSION >= Y) && \
(SDL_MAJOR_VERSION > X || SDL_MINOR_VERSION > Y || SDL_PATCHLEVEL >= Z))