Failed to retrieve MSVC Environment from “D:\Program Files\VS2015\VC\vcvarsall.bat amd64

报错：:-1: error: Failed to retrieve MSVC Environment from "D:\Program Files\VS2015\VC\vcvarsall.bat amd64_x86": The command "C:\Windows\system32\cmd.exe" could not be started.

解决办法：我的Qt环境变量下是D:\Qt\Qt5.12.9\5.12.9\msvc2015_64\bin\和D:\Qt\Qt5.12.9\Tools\mingw730_64\bin\

把最后一个路径分隔符去掉即可：D:\Qt\Qt5.12.9\5.12.9\msvc2015_64\bin和D:\Qt\Qt5.12.9\Tools\mingw730_64\bin