argv and argc access?

["J�rgen �hman" <oh.man@lulea.mail.telia.com>]

I�m writing an opengl application using ada at my work. The application
needs to use full screen mode (not
just a maximized window).  The glut library provides a full screen mode
but to initialize glut i need to pass
the unmodified argv and argc c-parameters to the glutInit procedure.
But how can i access these in ada?
I have seen a couple of examples where they are imported:  (something
like)
  argc : aliased integer;
  pragma Import (C, argc, "gnat_argc");

but the linker doesn�t find the name ("link error: LNK2001: unsolved
external gnat_argc)
What am i supposed to do?

Thanks /J�rgen