anchor.diff:   
      echo Making 64-bit spirv-tools  
      echo *************************
  -   mkdir build
      set SPIRV_TOOLS_BUILD_DIR=%SPIRV_TOOLS_DIR%\build
      cd %SPIRV_TOOLS_BUILD_DIR%
   
  
positive.code:  
     echo Making 64-bit glslang
     echo *************************
     mkdir build
     set GLSLANG_BUILD_DIR=%GLSLANG_DIR%\build
     cd %GLSLANG_BUILD_DIR%
  
  
negative.code:    cd  %SPIRV_TOOLS_DIR%
  
     REM Cleanup any old directories lying around.
     if not exist build32 (
         mkdir build32
     )
     if not exist build (
        mkdir build
     )
  
     echo Making 32-bit spirv-tools
     echo *************************
     set SPIRV_TOOLS_BUILD_DIR=%SPIRV_TOOLS_DIR%\build32
  
     cd %SPIRV_TOOLS_BUILD_DIR%
  