X11 XOpenDisplay Problem

poehli · 03-05-2011, 12:48 PM

Hi Everyone!
I'm completeley new here and already got a problem ;D.
I just started to get into Xlib Programming and one the first function I called there was an issue:
When I try to run the XOpenDisplay function it either returns "undefined reference to 'XOpen Display'" without the -lX11 flag or it can't find -lX11
I checked if I got the necessary libery and stuff... I googled for hours, but all tips didn't help... Can anybody help me please?

Code:

#include<X11/Xlib.h>

int main()
{
  Display *dpy;

  if ((dpy = XOpenDisplay(NULL)) == NULL)
  {
    printf ("Error");
    return 1;
  }
}

This is kept really simple, I know, but it still doesn't work!

paulsm4 · 03-05-2011, 02:47 PM

You need to add something like this to your build command:

Quote:

"-l/usr/X11R6/include -L/usr/X11R6/lib"

<= substitute your actual Xlib header and library directories for "/usr/X11R6"

poehli · 03-05-2011, 03:43 PM

Oh wow! Thanks, I just didn't do the lib but only the include filepath *duh*.
You are my hero - well almost

Thanks again