link error when the class is inherited from ICE::Object

The code works well under WINDOWS, the IDE is VS.NET 2003.:D

But, there are a lot of link errors under LINUX, the complier is g++

will you tell me why and how to slove it ?

i appreciate your help.;)

The code:
//

---

// MyObject.h
#ifndef MYOBJECT_H
#define MYOBJECT_H

#include <Ice/Ice.h>
#include <IceUtil/Handle.h>

class MyObject :public Ice::Object
{
public:
MyObject(void);

virtual ~MyObject(void) = 0 ;

virtual int get() const
{
return 0;
};
};

class TestObject : public MyObject
{
public:
TestObject(int val):MyObject(),_value(val)
{
};

~TestObject(){};

int get() const
{
return this->_value;
};

void set(int val)
{
this->_value = val;
}
private:
int _value;
};

typedef IceUtil::Handle<MyObject> MyObjectPtr;

#endif //MYOBJECT_H

//

---

// MyObject.cpp

#include "MyObject.h"

MyObject::MyObject(void)
{
}

MyObject::~MyObject(void)
{
}

//

---

// TestMain.cpp

#include "MyObject.h"


int main(int argc, char * argv[])
{
MyObjectPtr p = new TestObject(atoi(argv[1]));

std::cout << p->get();

// return 0;
}
//

---