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OpenGL Trouble... Xcode Leopard Mac OpenGL & C++

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I am relatively new to OpenGL, but I know a bit of Python, PHP, and C++. So in order to learn how to use OpenGL, I was using the tutorials on Nehe Productions page. They seem pretty easy, and I understand the concepts and all.. what I don't understand, is why my program is not compiling. I use Mac OS 10.5.x, and I use Xcode for programming (I am also new to Xcode, and am still trying to figure it out) So specifically, my trouble comes with the following page: I think the tutorial may be outdated, and perhaps some of the functions have been deprecated. I have looked on OpenGL's pages for the online man pages, but all I find is links to the official manual on Amazon. I have no idea how to use Xcode, and that is part of the problem. I don't understand what the errors mean. Please help if you can, I'd really like to continue with the tutorials, and I am stuck because I can't go further without being able to test and compile! Code (main.cpp):
#include <OpenGL/gl.h>		// Header File For The OpenGL32 Library
#include <OpenGL/glu.h>		// Header File For The GLu32 Library
#include <GLUT/glut.h>		// Header File For The GLut Library

#define kWindowWidth	400
#define kWindowHeight	300

GLvoid InitGL(GLvoid);
GLvoid DrawGLScene(GLvoid);
GLvoid ReSizeGLScene(int Width, int Height);

int main(int argc, char** argv)
	glutInit(&argc, argv);
	glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
	glutInitWindowSize (kWindowWidth, kWindowHeight);
	glutInitWindowPosition (100, 100);
	glutCreateWindow (argv[0]);




	return 0;
Errors when I try to build: "DrawGLScene()", referenced from: _Z11DrawGLScenev$non_lazy_ptr in main.o "InitGL()", referenced from: _main in main.o "ReSizeGLScene(int, int)", referenced from: _Z13ReSizeGLSceneii$non_lazy_ptr in main.o symbol(s) not found collect2: Id returned 1 exit status Notes: I do have the libraries in my project folder.

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The Nehe tutorials are extremely outdated. Not that they're entirely worthless -- many of the concepts and algorithms described are still valid -- but the implementation is unlikely to work on modern platforms.

(Incidentally, OS X's "native" programming language is Objective-C, not C++. You should probably check in case XCode is trying to compile your C++ as Obj-C instead, though this is unlikely.)

Apple do include some OpenGL examples in their SDK, but you should probably go to the horse's mouth for up-to-date documentation and tutorials.

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