I built Ardour 5.12 the other day and came up with some inconsistencies, so I asked rgareus one of the devs for advice. He gave me the following: 1. sed -i 's/python ${SRC}/python2 ${SRC}/' libs/pbd/wscript is not needed this has been fixed in the source a long time. The only thing we have to do is to run python2 waf configure as the script already does. 2. configure it like this: configure --prefix=/usr --configdir=/etc --with-backends="jack,alsa,dummy" \ --libjack=weak \ --optimize \ --cxx11 \ --ptformat \ --no-phone-home He said there is no need to build the documentation on the users machine. Add the dummy backend which improves on functionality. Optionally add the experimental --ptformat option which gives initial support for opening pro tools session in ardour. This is a work in progress but they have understood the XOR based encryption and are in the process of clean room reverse engineering the format. -- Joakim