ref: 6fb98c7fa6f1f9519487f45739654354bf71d44f
dir: /sys/src/cmd/nusb/mkfile/
</$objtype/mkfile
DIRS=\
	lib\
	kb\
	audio\
	ether\
	usbd\
	disk\
	serial\
	ptp\
	joy\
	cam\
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
	}
test:
	for(d in $DIRS) @{
		cd $d && mk $MKFLAGS test
	}