I guess cl is not present in your path. So now you just need to add it there. The recommended way to do it is by launching a developer command prompt.
To open the Developer Command Prompt window please follow below steps
1. For Windows 8 in Start screen type Visual Studio Tools. Once the search results change as you type; when Visual Studio Tools appears, just select it.
For earlier versions of Windows you need to choose Start, and then in the search box, type Visual Studio Tools. When Visual Studio Tools appears in the search results, select it.
2. In your Visual Studio Tools folder please open the Developer Command Prompt for your version of Visual Studio. If want to run it as administrator please open the shortcut menu for the Developer Command Prompt and select Run as Administrator