ref: 6543fb3561a32f20651e98a10e460b9066d1ccda
dir: /sys/src/cmd/nusb/mkfile/
</$objtype/mkfile
DIRS=\
	lib\
	kb\
	audio\
	ether\
	usbd\
	disk\
	serial\
	ptp\
	joy\
	cam\
UPDATE=\
	mkfile\
default:V: all
none:VQ:
	echo mk all, install, installall, safeinstall, safeinstallall, clean, nuke, or update
all clean nuke:VQ:
	for (i in $DIRS) @{
		cd $i && echo $i: && mk $target
	}
install installall safeinstall safeinstallall:V:
	for (i in $DIRS) @{
		cd $i && mk $target
	}
update:V:
	update $UPDATEFLAGS $UPDATE
	for (i in $DIRS) @{
		echo update $i
		cd $i && mk 'UPDATEFLAGS='$"UPDATEFLAGS update
	}