This port is kept up with the GNSS-SDR GIT next branch, which is typically updated daily to weekly. This version of GNSS-SDR generally contains fixes and new features that will be incorporated in an upcoming release, and compiles against the gnuradio-next port, which represents GNU Radio GIT next branch. This port may or not compile or function correctly, as it represents a work in progress. If it does not work, check back in a few days. Or try deactivating the currently active gnss-sdr and gnuradio ports, cleaning any current builds, and trying again.