[WinError 2] 系统找不到指定的文件。&&Can not find cl.exe

I built tvm with llvm on windows. When I was running the examples,two errors came out. I revised the target and ctx. target=‘llvm’

ctx=tvm.cpu()

FileNotFoundError: [WinError 2] 系统找不到指定的文件。 RuntimeError: Can not find cl.exe,please run this in Vistual Studio Command Prompt.