when I use windows XP and MS VS2008 compile the source code of "vaa3d", a kind of error occurs:
error C3861: “gluErrorString”: can not find identifier
1>renderer_hit.cpp
1>d:\v3d_main\3drenderer\renderer.h(495) : error C3861: “gluErrorString”: can not find identifier
1>..\3drenderer\renderer_hit.cpp(2965) : error C3861: “gluProject”: can not find identifier
1>..\3drenderer\renderer_hit.cpp(2994) : error C3861: “gluProject”: can not find identifier
1>renderer_gl2.cpp
1>d:\v3d_main\3drenderer\renderer.h(495) : error C3861: “gluErrorString”: can not find identifier
1>d:\v3d_main\3drenderer\glsl_r.cpp(121) : error C3861: “gluErrorString”: can not find identifier
1>d:\v3d_main\3drenderer\glsl_r.cpp(260) : error C3861: “glCreateProgram”: can not find identifier
1>d:\v3d_main\3drenderer\glsl_r.cpp(274) : error C3861: “glDetachShader”: can not find identifier
there are still  lots of this errors that i did not list on this. Anybody can tell me how to solve this problem?
Thanks in advance.