anchor.diff:  
   :NoVS
   @echo build.bat
  -@echo  Visual Studio 2015 not found
  -@echo  "%%VS140COMNTOOLS%%" environment variable not defined
  +@echo  Visual Studio 2017 not found
  +@echo  "%%VS150COMNTOOLS%%" environment variable not defined
   exit /B 1
   
   :Usage
  
positive.code: set BOOST_ROOT=C:/local/boost_1_59_0
  rem #######################################################
  
  if not defined VS140COMNTOOLS goto :NoVS
  if [%1]==[] goto :Usage
  if [%1]==[32] goto :32
  if [%1]==[64] goto :64
  
negative.code: @echo off
  rem Runs CMake to configure nanodbc (static library) for Visual Studio 2017.
  rem Runs MSBuild to build the generated solution.
  rem
  rem Usage:
  