| @echo off | 
 | rem This script adds the latest available tools to the path for the current | 
 | rem command window. However, most builds of Python will ignore the version | 
 | rem of the tools on PATH and use PlatformToolset instead. Ideally, both sets of | 
 | rem tools should be the same version to avoid potential conflicts. | 
 | rem | 
 | rem To build Python with an earlier toolset, pass "/p:PlatformToolset=v100" (or | 
 | rem 'v110', 'v120' or 'v140') to the build script. | 
 |  | 
 | echo Build environments: x86, amd64, x86_amd64 | 
 | echo. | 
 | set VSTOOLS=%VS140COMNTOOLS% | 
 | if "%VSTOOLS%"=="" set VSTOOLS=%VS120COMNTOOLS% | 
 | if "%VSTOOLS%"=="" set VSTOOLS=%VS110COMNTOOLS% | 
 | if "%VSTOOLS%"=="" set VSTOOLS=%VS100COMNTOOLS% | 
 | call "%VSTOOLS%..\..\VC\vcvarsall.bat" %* |