Run cl.exe in Visual Studio Developer Command Prompt
The Developer Command Prompt for Visual Studio automatically sets the environment variables
If you’re using WIN10, press [Win] key, then search for “VS2015 x64 Native Tools Command Prompt”
Location in my machine :
“c:\ProgramData\Microsoft\Windows\Start Menu\Programs\Visual Studio 2015\Visual Studio Tools\Windows Desktop Command Prompts\VS2015 x64 Native Tools Command Prompt”