SDL 2.0 won't initialize. Error: “Failed to connect to the Mir Server”

Question

I am running Ubuntu 14.04, and using Eclipse CDT.

In my program, I am trying to initialize SDL and if it doesn\'t initialize then output the error, but SDL_GetError(

Answer 1

bash$ export DISPLAY=:0

Setting the DISPLAY run time environment variable fixes it for me — typical X Windows lossage, fails to default to your local display (designed for remote displays) which you'd only know if you'd gone to X11 summer camp.

A complete working example in bash:

(cd /tmp && g++ -xc++ - -lSDL2 && (DISPLAY=:0 ./a.out; echo \$? = $?)) <<.
#include 
#include 

int main() {
  if(SDL_Init(SDL_INIT_EVERYTHING) < 0) {
    std::cout << SDL_GetError() << std::endl;
    return 1;
  }
  return 0;
}
.

$? = 0