Sure. Running currently.Comment it out to see the effect? Or add a bogus assignment to make it look used.
Yes, this likely comes from an obsolete option in /etc/src.conf, that seems to include some untested code.On what platform are you building (version)? And also important: did you apply any customizations in either /etc/make.conf and/or /etc/src.conf?
Because I build 14.5 myself back in the day and had 0 issues with the build process.