cannot initialize SDL - c++

Question

I'm trying SDL2 for ios. I followed this instructions to build libsdl2.a and libsdlmain.a.
Have used the built in ios template xcode project.
But gives me error while Initialization.
SDL Error: Application didn’t initialize properly, did you include SDL_main.h in the file containing your main() function?
could anyone help me?
#include "SDL.h"
int main(int argc, char *argv[])
{
SDL_Window *window;
SDL_Renderer *renderer;
int done;
SDL_Event event;
/* initialize SDL */
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
printf("Could not initialize SDL\n");
return 1;
}
/* seed random number generator */
srand(time(NULL));
/* create window and renderer */
window =
SDL_CreateWindow(NULL, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT,
SDL_WINDOW_OPENGL);
if (!window) {
printf("Could not initialize Window\n");
return 1;
}
renderer = SDL_CreateRenderer(window, -1, 0);
if (!renderer) {
printf("Could not create renderer\n");
return 1;
}
/* Enter render loop, waiting for user to quit */
done = 0;
while (!done) {
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
done = 1;
}
}
SDL_Delay(1);
}
/* shutdown SDL */
SDL_Quit();
return 0;
}

Answer 1

you have to Initialize SDL with SDL_Init() to Initialize everything you state: SDL_Init(SDL_INIT_EVERYTHING);