when i comple ogre aplication i get message
Switching to target: Release
Linking executable: OGRE sample.exe
Release\.objs\main.o:main.cpp:(.text$_ZN18ExampleApplication19createFrameListenerEv[ExampleApplication::createFrameListener()]+0xcf): undefined reference to `Ogre::OverlayManager::getByName(std::string const&)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x111): undefined reference to `Ogre::OverlayManager::getOverlayElement(std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x178): undefined reference to `Ogre::OverlayManager::getOverlayElement(std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x1df): undefined reference to `Ogre::OverlayManager::getOverlayElement(std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x246): undefined reference to `Ogre::OverlayManager::getOverlayElement(std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x2b6): undefined reference to `Ogre::StringConverter::toString(float, unsigned short, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x368): undefined reference to `Ogre::StringConverter::toString(float, unsigned short, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x412): undefined reference to `Ogre::StringConverter::toString(unsigned long, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x459): undefined reference to `Ogre::StringConverter::toString(float, unsigned short, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x620): undefined reference to `Ogre::StringConverter::toString(unsigned long, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x664): undefined reference to `Ogre::StringConverter::toString(float, unsigned short, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x855): undefined reference to `Ogre::OverlayManager::getOverlayElement(std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x8ac): undefined reference to `Ogre::StringConverter::toString(unsigned int, unsigned short, char, std::_Ios_Fmtflags)'
Release\.objs\main.o:main.cpp:(.text$_ZN20ExampleFrameListener11updateStatsEv[ExampleFrameListener::updateStats()]+0x983): undefined reference to `Ogre::OverlayManager::getOverlayElement(std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN18ExampleApplication18chooseSceneManagerEv[ExampleApplication::chooseSceneManager()]+0x84): undefined reference to `Ogre::Root::createSceneManager(unsigned short, std::string const&)'
Release\.objs\main.o:main.cpp:(.text$_ZN18ExampleApplication9configureEv[ExampleApplication::configure()]+0xc8): undefined reference to `Ogre::Root::initialise(bool, std::string const&)'
Release\.objs\main.o:main.cpp:(.text$_ZN18ExampleApplication5setupEv[ExampleApplication::setup()]+0x10c): undefined reference to `Ogre::Root::Root(std::string const&, std::string const&, std::string const&)'
Release\.objs\main.o:main.cpp:(.text$_ZN18ExampleApplication14setupResourcesEv[ExampleApplication::setupResources()]+0xd5): undefined reference to `Ogre::ConfigFile::load(std::string conInfo: resolving Ogre::Vector3::ZERO by linking to __imp___ZN4Ogre7Vector34ZEROE (auto-import)
Info: resolving Ogre::Math::fDeg2Rad by linking to __imp___ZN4Ogre4Math8fDeg2RadE (auto-import)
Info: resolving Ogre::Quaternion::IDENTITY by linking to __imp___ZN4Ogre10Quaternion8IDENTITYE (auto-import)
Info: resolving Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME by linking to __imp___ZN4Ogre20ResourceGroupManager27DEFAULT_RESOURCE_GROUP_NAMEE (auto-import)
st&, std::string const&, bool)'
Release\.objs\main.o:main.cpp:(.text$_ZN18ExampleApplication14setupResourcesEv[ExampleApplication::setupResources()]+0x48b): undefined reference to `Ogre::ResourceGroupManager::addResourceLocation(std::string const&, std::string const&, std::string const&, bool)'
collect2: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 0 seconds)
Help!!!