anchor.diff:      # TODO: libiptcdata support
       "--disable-libiptcdata"
       (enFlag "exempi" (exempi != null) null)
  -    "--enable-meegotouch"
  +    "--disable-meegotouch"
       "--enable-miner-fs"
       "--enable-extract"
       "--enable-tracker-writeback"
       "--disable-miner-apps"
  -    "--enable-user-guides"
  +    "--disable-miner-user-guides"
       # TODO: miner-rss support
       "--disable-miner-rss"
       # evolution currently requires webkit-2.4
  
positive.code:     "--disable-gtk-doc"
      "--disable-gtk-doc-html"
      "--disable-gtk-doc-pdf"
      "--enable-maemo"
      "--enable-journal"
      "--enable-libstreamer"
      "--enable-tracker-fts"
      "--disable-unit-tests"
      (enFlag "upower" (upower != null) null)
      "--disable-hal"
      (enFlag "network-manager" (networkmanager != null) null)
      (enFlag "libmediaart" (libmediaart != null) null)
  
negative.code:     "--enable-icu-charset-detection"
      (enFlag "libxml2" (libxml2 != null) null)
      "--enable-cfg-man-pages"
      #"--enable-generic-media-extractor="
      "--enable-unzip-ps-gz-files"
      (enFlag "poppler" (poppler != null) null)
      (enFlag "libgxps" (libgxps != null) null)
  