Build wrong in gpu,but fine in cpu only #32

hi!
build_win.cmd in win10 with GPU evn, but wrong below：
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets(170,5): error MSB6006: “cmd.exe

if build in cpu only, it is right!
where is wrong?
Thank you