undefined symbols error, cannot figure out why

From:

Jason S <jasonsavlov@me.com>

Newsgroups:

comp.lang.c++

Date:

Tue, 23 Nov 2010 16:54:24 -0500

Message-ID:

<2010112316542456651-jasonsavlov@mecom>

A program I'm writing won't compile because it says the symbols are
undefined. I defined the symbols, but it still seems to not work.

g++ on Mac OS X outputs the following when I try and compile:

Undefined symbols:
  "server::run()", referenced from:
      _main in ccsfY9ID.o
  "Queue::~Queue()", referenced from:
      server::~server()in ccsfY9ID.o
  "server::server()", referenced from:
      _main in ccsfY9ID.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

Here's the .h file for server:

#include <iostream>
#include <ctime>

#ifndef SERVER
#define SERVER

#include "Client.h"
#include "LQueue.h"
#include "JSTimer.h"

const int NUM_CATEGORIES = 5;

class server
{
public:
    server();

    void run();

    void display(ostream & out);

    void service(int & busyTimeRemaining);
    void checkForNewClient();
private:

    int myLengthOfSimulation;
    double myArrivalRate;
    int myServicePercent[NUM_CATEGORIES];

    int myClientsReceived;
    double myTotalWaitingTime;

    JSTimer myTimer;

    Queue myIncomingClients;

};

#endif

I won't even bother including the matching .cpp file because they
clearly match the declaration. If more code is needed to figure this
out, let me know. But this baffles me.

--
Jason