Error in compilation VS2010

[macia10]

Hi,
I've tried to compile win32 version under VS express 2010 and it failes all the time with following errors. Could you guide me how to compile it properly?

Code:

1>OpenGLBase.obj : error LNK2001: unresolved external symbol "public: void __thiscall OpenGLState::Initialize(void)" (?Initialize@OpenGLState@@QAEXXZ)
1>OpenGLBase.obj : error LNK2001: unresolved external symbol "class OpenGLState glstate" (?glstate@@3VOpenGLState@@A)
1>GPU.lib(DisplayListInterpreter.obj) : error LNK2001: unresolved external symbol "class OpenGLState glstate" (?glstate@@3VOpenGLState@@A)
1>GPU.lib(TransformPipeline.obj) : error LNK2001: unresolved external symbol "class OpenGLState glstate" (?glstate@@3VOpenGLState@@A)
1>..\PPSSPPWindows.exe : fatal error LNK1120: 2 unresolved externals