Windows - Creating FreeGLUT DLL

I'm trying OpenGL on Haskell and couldn't create the FreeGLUT DLL myself.

I did follow this tutorial:
http://netsuperbrain.com/blog/posts/freeglut-windows-hopengl-hglut/

But when I put my DLL on the folder of the binary, it complains about
"initGlut".

Using the DLL pointed by FreeGLUT official site, created by other
person, works fine.

I don't know what I did wrong.

Anyone had this problem?

Thanks.