SDL (unfortunately, IMO) does this strange thing where they redefine main, in order to abstract away platform specific details of the entry point in applications. In order to not utilize this feature, perform the following. Before including SDL.h, first define SDL_MAIN_HANDLED.
#define SDL_MAIN_HANDLED
#include <SDL2/SDL.h>
That inhibits the redefinition of main. Then, in main, before doing anything else with SDL, call this function
SDL_SetMainReady();
That will do any initialization that is needed by SDL (currently does nothing other than setting a global variable named SDL_MainIsReady to true).
