STL link issue.

For some reason my code compiles successfuly but it doesn't link. Here is the code:

Code:

#ifndef __ENGINE_H__
#define __ENGINE_H__

#include <windows.h>
#include <io.h>
#include <fcntl.h>
#include <gl/glew.h>
#include <gl/wglew.h>

#include <map>
#include <string>
#include <vector>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>

using namespace std;

class VideoEngine
{
public:

	static int init();
	static void clear();

	static void addPath(const char *path);

	// paths
	static vector<char*> path;
};

#endif //__ENGINE_H__

Code:

#include "Engine.h"

void Engine::addPath(const char *path)
{
	char *s = (char*)path;

	while(1)
	{
		char *p = new char[strlen(s) + 1];
		char *d = p;

		while(*s != '\0' && *s != ',') 
			*d++ = *s++;
		*d = '\0';

		Engine::path.push_back(p);

		if(*s == '\0')
			break;
		else
			s++;
	}
}

Am I doing something wrong?

I fixed my own problem. I had to add the following line to the Engine.cpp

Code:

vector<char*> Engine::path;

What is the reason for that?