This macro can be used to fill a version structure with the compile-time version of the SDL_mixer library.
Defined in SDL_mixer.h
#define SDL_MIXER_VERSION(X) \
{ \
(X)->major = SDL_MIXER_MAJOR_VERSION; \
(X)->minor = SDL_MIXER_MINOR_VERSION; \
(X)->patch = SDL_MIXER_PATCHLEVEL; \
}