anchor.diff:  
   REM create msi package
   cd %WORK_DIR%\gpdb_src\gpAux\client\install\src\windows\
  -@call CopyDependencies.bat C:\ext %WORK_DIR%\greenplum-db-devel
  +@call CopyDependencies.bat C:\windows\system32\ext %WORK_DIR%\greenplum-db-devel
   @call CreatePackage.bat %WORK_DIR%\greenplum-db-devel %GPDB_VERSION%
   
   move *.msi %WORK_DIR%
  
positive.code: @call "C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Auxiliary\Build\vcvars64.bat"
  @echo on
  cd %WORK_DIR%\gpdb_src\src\tools\msvc
  echo our $config = {gss =^> 'C:/ext', openssl =^> 'c:/ext', zlib =^> 'c:/ext'}; >config.pl
  
  perl build.pl client
  perl install.pl %WORK_DIR%\greenplum-db-devel client
  
negative.code: cd %WORK_DIR%\gpdb_src\src\bin\gpfdist
  mkdir build
  cd build
  cmake -DCMAKE_PREFIX_PATH:PATH=C:\windows\system32\ext -DCMAKE_INSTALL_PREFIX:PATH=%WORK_DIR%\greenplum-db-devel -G "Visual Studio 15 2017 Win64" ..
  cmake --build . --config Release --target ALL_BUILD
  cmake --build . --config Release --target INSTALL
  
  