cmake没有找到qt 5.1.1。

I just installed the Qt 5.1.1 for Windows 32-bit (MinGW 4.8, OpenGL) and tried to add it to my cmake. But CMake just does not want to find it and i dont know why. What am i missing? Do i need to set an environment variable or something? I just installed the Qt 5.1.1 for Windows 32-bi