/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:19:1: error:
      unknown type name 'SDL_Window'
SDL_Window      *window(void)
^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:21:10: error:
      unknown type name 'SDL_Window'
  static SDL_Window *w;
         ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:23:9: warning:
      implicit declaration of function 'SDL_CreateWindow' is invalid in C99
      [-Wimplicit-function-declaration]
    w = SDL_CreateWindow(
        ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:25:7: error:
      use of undeclared identifier 'SDL_WINDOWPOS_UNDEFINED'
      SDL_WINDOWPOS_UNDEFINED,
      ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:26:7: error:
      use of undeclared identifier 'SDL_WINDOWPOS_UNDEFINED'
      SDL_WINDOWPOS_UNDEFINED,
      ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:29:7: error:
      use of undeclared identifier 'SDL_WINDOW_SHOWN'
      SDL_WINDOW_SHOWN);
      ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:49:3: error:
      use of undeclared identifier 'SDL_Window'
  SDL_Window* pWindow = window();
  ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:49:15: error:
      use of undeclared identifier 'pWindow'
  SDL_Window* pWindow = window();
              ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:50:8: error:
      use of undeclared identifier 'pWindow'
  if (!pWindow)
       ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:68:13: warning:
      implicit declaration of function 'SDL_GetWindowSurface' is invalid in C99
      [-Wimplicit-function-declaration]
    display(SDL_GetWindowSurface(pWindow), game);
            ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:68:34: error:
      use of undeclared identifier 'pWindow'
    display(SDL_GetWindowSurface(pWindow), game);
                                 ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:70:9: warning:
      implicit declaration of function 'SDL_UpdateWindowSurface' is invalid in
      C99 [-Wimplicit-function-declaration]
    if (SDL_UpdateWindowSurface(pWindow) < 0)
        ^
/Users/janvro_a/Desktop/ETNA/MASTER2/BOMBER/bombe-hermann-master/client.c:70:33: error:
      use of undeclared identifier 'pWindow'
    if (SDL_UpdateWindowSurface(pWindow) < 0)