Avoids errors like these (and of course also is a good idea in general):
[   36s] make -C nx-X11 BuildIncludes FONT_DEFINES= -DLEGACY_XFONT1
[   36s] make: invalid option -- D
[   36s] make: invalid option -- E
[   36s] make: invalid option -- G
[   36s] make: invalid option -- A
[   36s] Usage: make [options] [target] ...