Unresolved Externals LNK2001

[lucky6969b]

Hi,
I have written a small piece of code which mostly duplicated from another
project. But I didn't understand why they have unresolved externals errors
while I have defined them in the class.
Any help would be greatly appreciated
Thanks
Jack

OgreApp.h

#ifndef __OgreApp_h_
#define __OgreApp_h_

#include "BaseApplication.h"
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
#include "../res/resource.h"
#endif

#include "OgreRecastDefinitions.h"
#include "OgreRecast.h"
#include "OgreDetourCrowd.h"
#include "Character.h"
#include "OgreDetourTileCache.h"
#include "Obstacle.h"


class OgreApp : public BaseApplication
{
public:
    OgreApp(void);
    virtual ~OgreApp(void);
//...//
    enum QueryFlags {
       DEFAULT_MASK = 1u<<0,
       NAVMESH_MASK = 1u<<1,
       OBSTACLE_MASK= 1u<<2
    };

    /**
      * Set to true to draw visual debug clues related to Recast/Detour navigation
      **/
    static bool DEBUG_DRAW;

    /**
      * Set to true to use animated human characters, otherwise test cylinders will
      * be used to represent agents.
      **/
    static bool HUMAN_CHARACTERS;

    /**
      * Place obstacles in the scene as separate meshes.
      **/
    static bool OBSTACLES;

    /**
      * Determines whether demo app will build simple single navmesh,
      * or build a tiled navmesh using detourTileCache that supports temp obstacles.
      **/
    static bool SINGLE_NAVMESH;

    /**
      * Determines whether also dungeon mesh will be queried when clicking to set
      * begin position or destination.
      * Nearest point to navmesh within certain bounds will be found.
      * Set to false to only query points exactly on the navmesh.
      **/
    static bool RAYCAST_SCENE;

    /**
      * Determines whether agent steering mode of the demo will use a temp obstacle.
      * Set to false to steer an agent in the crowd instead.
      * Setting to true only has effect when SINGLE_NAVMESH is false.
      **/
    static bool TEMP_OBSTACLE_STEERING;

    /**
      * Determines whether the temporary obstacle placing demo places convex shapes
      * on the navmesh.
      * Set to true to place boxes, set to false to place standard temporary obstacles
      * (simple cylinders).
      **/
    static bool COMPLEX_OBSTACLES;

    /**
      * Determines whether terrain demo will be shown or a demo in an interior dungeon
      * scene.
      **/
    static bool TERRAIN;

    /**
      * Determines whether paged crowds demo will be shown. If true the paged demo will
      * run, if false TERRAIN determines whether terrain or dungeon demo will be run.
      **/
    static bool PAGED;

//...//

  

 };

#endif // #ifndef __OgreApp_h_

Error	1	error LNK2001: unresolved external symbol "public: static bool OgreApp::HUMAN_CHARACTERS" (?HUMAN_CHARACTERS@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreRecastPagedCrowdApplication.obj	OgreApp
Error	2	error LNK2001: unresolved external symbol "public: static bool OgreApp::HUMAN_CHARACTERS" (?HUMAN_CHARACTERS@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreRecastTerrainApplication.obj	OgreApp
Error	3	error LNK2019: unresolved external symbol "public: static bool OgreApp::HUMAN_CHARACTERS" (?HUMAN_CHARACTERS@OgreApp@@2_NA) referenced in function "public: __thiscall OgreApp::OgreApp(void)" (??0OgreApp@@QAE@XZ)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	4	error LNK2001: unresolved external symbol "public: static bool OgreApp::SINGLE_NAVMESH" (?SINGLE_NAVMESH@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreRecastTerrainApplication.obj	OgreApp
Error	5	error LNK2001: unresolved external symbol "public: static bool OgreApp::SINGLE_NAVMESH" (?SINGLE_NAVMESH@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	6	error LNK2001: unresolved external symbol "public: static bool OgreApp::RAYCAST_SCENE" (?RAYCAST_SCENE@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreRecastTerrainApplication.obj	OgreApp
Error	7	error LNK2001: unresolved external symbol "public: static bool OgreApp::RAYCAST_SCENE" (?RAYCAST_SCENE@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	8	error LNK2001: unresolved external symbol "public: static bool OgreApp::COMPLEX_OBSTACLES" (?COMPLEX_OBSTACLES@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	9	error LNK2001: unresolved external symbol "public: static bool OgreApp::TEMP_OBSTACLE_STEERING" (?TEMP_OBSTACLE_STEERING@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	10	error LNK2001: unresolved external symbol "public: static bool OgreApp::PAGED" (?PAGED@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	11	error LNK2001: unresolved external symbol "public: static bool OgreApp::TERRAIN" (?TERRAIN@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	12	error LNK2001: unresolved external symbol "public: static bool OgreApp::OBSTACLES" (?OBSTACLES@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	13	error LNK2001: unresolved external symbol "public: static bool OgreApp::DEBUG_DRAW" (?DEBUG_DRAW@OgreApp@@2_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	14	error LNK2001: unresolved external symbol "protected: static bool BaseApplication::DISABLE_MOUSE_GRAB" (?DISABLE_MOUSE_GRAB@BaseApplication@@1_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	15	error LNK2001: unresolved external symbol "protected: static bool BaseApplication::RESTORE_CONFIG" (?RESTORE_CONFIG@BaseApplication@@1_NA)	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\OgreApp.obj	OgreApp
Error	16	error LNK1120: 11 unresolved externals	E:\Jacky\Documents\Visual Studio 2010\Projects\OgreApp\OgreApp\bin\Debug\\OgreApp.exe	OgreApp

[2kaud]

Have you linked with the appropriate library .lib files?

[lucky6969b]

Hello,
I have solved it, it is because I didn't define them in the .cpp file
Thanks
Jack