Makefile doesn't work with NetBSD 7.1 make

[yarwelp]

./buildnb.sh

[...]

#   install  /home/yarwelp/rumpctrl/rumptools/dest/usr/lib/pkgconfig/libssl.pc
/home/yarwelp/rumpctrl/rumptools/bin/x86_64--netbsd-install -U -c -p -r  -o root  -g wheel  -m 444   libssl.pc /home/yarwelp/rumpctrl/rumptools/dest/usr/lib/pkgconfig/libssl.pc
make: "/home/yarwelp/rumpctrl/Makefile" line 67: Missing dependency operator
make: "/home/yarwelp/rumpctrl/Makefile" line 71: Need an operator
make: "/home/yarwelp/rumpctrl/Makefile" line 118: Need an operator
make: "/home/yarwelp/rumpctrl/Makefile" line 132: Need an operator
make: "/home/yarwelp/rumpctrl/Makefile" line 133: Need an operator
make: Fatal errors encountered -- cannot continue
make: stopped in /home/yarwelp/rumpctrl