got problem using glesdebugdraw

I am using cocos2d-1.0.1-x-0.11.0 under visual studio 2010 win7.

I have the following compiling error when using glesdebugdraw
error LNK2019: unresolved external symbol “public: thiscall GLESDebugDraw::GLESDebugDraw" referenced in function
"public: virtual bool
thiscall HelloWorld::init(void)” (?init@HelloWorld@@UAE_NXZ)