anchor.diff:      echo -release .......... Build without debugging symbols
       echo -tests ............ Build unit tests (not build by default)
       echo -examples ......... Build example applications
  +    echo -vc ............... Generate Visual Studio make files
       echo -contact-src (backend) ...
       echo                    Compile the specified contacts API backend. Not selecting any backend
       echo                    will result in default selection for build platform
  
positive.code: if "%1" == "-tests"         goto testTag
  if "%1" == "-examples"      goto exampleTag
  if "%1" == "-contact-src"   goto contactsTag
  if "%1" == "/?"             goto usage
  if "%1" == "-h"             goto usage
  if "%1" == "-help"          goto usage
  
negative.code: set BUILD_UNITTESTS=no
  set BUILD_EXAMPLES=no
  set CONTACTS_PLUGIN=
  set VC_TEMPLATE_OPTION=
  
  if exist "%PROJECT_CONFIG%" del %PROJECT_CONFIG%
  echo CONFIG += silent > %PROJECT_CONFIG%
  