anchor.diff:  
   rem Initialize environment variable defaults
   call :SET_DEFAULTS
  +
  +rem Process command line arguments first
  +goto :PROCESS_ARGUMENTS
  +:CONTINUE_FROM_PROCESS_ARGUMENTS
   
   rem Build the environment and bail out if it fails
   call :BUILD_ENVIRONMENT
  
positive.code: set MYSQL_C_VERSION=6.0.2
  set "WGET=%PROJECT_BASE%tools\windows\wget.exe"
  set "ZIP=%PROJECT_BASE%tools\windows\7z.exe"
  
  goto :eof
  rem --- End of SET_DEFAULTS ----------------------------------------------------
  rem ----------------------------------------------------------------------------
  
  rem ----------------------------------------------------------------------------
  rem --- Start of BUILD_ENVIRONMENT ---------------------------------------------
  
negative.code: 
  set "PROJECT_BASE=%~dp0"
  set "PROJECT_DRIVE=%~d0"
  set "BUILD_DIR=%PROJECT_BASE%build\deps\"
  set "VENDOR_DIR=%PROJECT_BASE%vendor\"
  set MSVC_VERSION=11
  set BOOST_VERSION=1.52.0
  