Plz help me i m porting game in android but i m geting error in eclipse "undefined reference to `GameLayer::~GameLayer()'" in HelloWorld class which is inherited from GameLayer

E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/obj/local/armeabi/objs-debug/game_logic/HelloWorldScene.o: In function `HelloWorld':
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:27: undefined reference to `GameLayer::GameLayer()'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:27: undefined reference to `GameLayer::GameLayer()'
make: Leaving directory `/cygdrive/e/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/obj/local/armeabi/objs-debug/game_logic/HelloWorldScene.o: In function `HelloWorld::init()':
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:55: undefined reference to `GameLayer::init()'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:61: undefined reference to `WorldByEditor::WorldByEditor()'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:62: undefined reference to `WorldByEditor::init()'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/obj/local/armeabi/objs-debug/game_logic/HelloWorldScene.o: In function `HelloWorld::addNewSpriteWithCoords(cocos2d::CCPoint, int)':

E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/obj/local/armeabi/objs-debug/game_logic/HelloWorldScene.o: In function `HelloWorld::draw()':
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:157: undefined reference to `glDisable'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:158: undefined reference to `glDisableClientState'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:159: undefined reference to `glDisableClientState'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:163: undefined reference to `glEnable'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:164: undefined reference to `glEnableClientState'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:165: undefined reference to `glEnableClientState'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:169: undefined reference to `glEnable'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:170: undefined reference to `glColor4ub'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:171: undefined reference to `glLineWidth'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/obj/local/armeabi/objs-debug/game_logic/HelloWorldScene.o: In function `~HelloWorld':
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:481: undefined reference to `GameLayer::~GameLayer()'
E:/Acocos2d-x/cocos2d-1.0.1-x-0.11.0/MyBilliard/android/jni/../../Classes/HelloWorldScene.cpp:481: undefined reference to `GameLayer::~GameLayer()'

My header file HelloWorldScene.h
#pragma once

// When you import this file, you import all the cocos2d classes
#include "cocos2d.h"

#include "Layer/GameLayer/GameLayer.h"
//#include "MyContactListener.h"
#include "b2dContectList/ContectListener.h"//remove
#include "GLES-Render.h"
#include <Box2D/Box2D.h>
#include "Layer/Level1/Ball.h"
#include "Constants.h"

class ContectListener;//remove

using namespace cocos2d;

class HelloWorld : public GameLayer {

public:

WorldByEditor *billiardWorld;  

HelloWorld();
     virtual ~HelloWorld();
    // returns a Scene that contains the HelloWorld as the only child
    static CCScene* scene();

virtual void init();

};
in my HelloWorldScene.cpp

HelloWorld::HelloWorld()////////////////////////////////////////////////undefined reference to `GameLayer::~GameLayer()' {
GameLayer LAYER=new GameLayer();

screenSize = CCDirector::sharedDirector()->getWinSize();
          cocos2d::CCSprite *background= CCSprite::spriteWithFile("background.png");
          background->setAnchorPoint(CCPoint(0,0));
          background->setPosition(CCPoint(0,0));
          addChild(background,-2);
}

CCScene* HelloWorld::scene() {
//'scene' is an autorelease object
CCScene *scene = new CCScene();

// add layer as a child to scene
    CCLayer* layer = new HelloWorld();

scene->addChild(layer,2);
    layer->release();

return scene;
}

void HelloWorld::init() {
//initialize superlayer
GameLayer::init();
//initialize some variable
setIsTouchEnabled(true);
setIsAccelerometerEnabled(true);
stricker=false;
//back ground
billiardWorld=new WorldByEditor();
billiardWorld->init();
addChild(billiardWorld,-2);
///set up stick
stick= CCSprite::spriteWithFile("Stick.png");
stick->setAnchorPoint(CCPoint(0,0.5f));
stick->setPosition(CCPoint(80, 0));
addChild(stick,1);
//setup main game
setupBallSprites(); {
unschedule(schedule_selector(HelloWorld::tick) );
//ball->destroyBodyInWorld(billiardWorld->_world);
delete billiardWorld->_world;
billiardWorld->_world = NULL;
}
//////////////////////////////////////////////////////////////////////////////////////

/////////////////////
          setupPhysicsBodies(); 

m_bodyIndex = 0;
          m_angle = 0.0f;

schedule(schedule_selector(HelloWorld::tick) ); 
}
HelloWorld::~HelloWorld()//////////////////////////////////////////////////////undefined reference to `GameLayer::~GameLayer()'

Whenever you get "undefined reference" it's a linkage problem. It means you need to look into your Android.mk files to make sure you've added all libraries you need.

Thank You Friend for fast Response But Problem in My C++ Game classes My Project Hirarchy is as
Android
Classes
Resources

Classes->HelloWorld.h
Classes->Layer->GameLayer->GameLayer.h
I have defined #include "Layer/GameLayer/GameLayer.h" in HelloWorldScene File

HelloWorld is inherited from GameLayer Class