anchor.diff:    };
   
     defaultDependencies = [
  -    bzip2 flac speex
  -    libevent expat libjpeg
  +    bzip2 flac speex icu libopus
  +    libevent expat libjpeg snappy
       libpng libxml2 libxslt
       xdg_utils yasm zlib
       libusb1 libexif
  
positive.code:     use_system_libexif = true;
      use_system_libjpeg = true;
      use_system_libpng = false; # PNG dlopen() version conflict
      use_system_libusb = true;
      use_system_libxml = true;
      use_system_speex = true;
      use_system_ssl = useOpenSSL;
      use_system_stlport = true;
  
negative.code:     use_system_protobuf = true;
  
      use_system_harfbuzz = false;
      use_system_icu = false; # Doesn't support ICU 52 yet.
      use_system_libusb = false; # http://crbug.com/266149
      use_system_libwebp = false; # http://crbug.com/133161
      use_system_skia = false;
      use_system_sqlite = false; # http://crbug.com/22208
  