C++ Link error

Error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall Ogre::Quaternion::Quaternion(class Ogre::Quaternion const &)" (__imp_??0Quaternion@Ogre@@QAE@ABV01@@Z) referenced in function "public: virtual void __thiscall OgreObjectState::getWorldTransform(class btTransform &)const " (?getWorldTransform@OgreObjectState@@UBEXAAVbtTransform@@@Z) main.obj

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This is the errors that I met during I compiled source code concerning the wrapper of Ogre (http://www.ogre3d.org/) and Bullet (http://bulletphysics.org/wordpress/),

normally, two reasons for this:

(1) being lack of libs

(2) header files and lib file are not belonging to the same version. This is common in Ogre anda bullet, since the two envolve fast!