The documentation mentions that libqrencode is a dependency, but qrencode isn't used

[yurivict]

$ grep -r qrencode work/faustlive-2.5.16/
Binary file work/faustlive-2.5.16/Build/FaustLive/FaustLive matches
work/faustlive-2.5.16/Documentation/Implementation.tex:\item libqrencode
work/faustlive-2.5.16/Documentation/Implementation.tex:\item libqrencode
work/faustlive-2.5.16/src/MenusAndDialogs/FLHelpWindow.cpp:        fToolText->setHtml("<br>Libqrencode is a C library for encoding data in a QR Code symbol, a kind of 2D symbology that can be scanned by handy terminals such as a mobile phone with CCD.<br><br>""LEARN MORE ABOUT LIB QRENCODE : <a href = http://fukuchi.org/works/qrencode> fukuchi.org/works/qrencode</a>\n");
Binary file work/faustlive-2.5.16/tmp/FLHelpWindow.o matches

Version: 2.5.16