Quoting Murata Shuuichirou (mrt(a)notwork.org):
It seeems you use BSD make, instead of GNU make. GNU make is
normally installed as `gmake' (not `make') by ports/package
system of FreeBSD. Try `gmake all'.
mental note to self . o 0 (rmuser robin && adduser robinisanidiot)o
Thanks!