Use built in variable for make (#653)
Use built in variable for make (#653)

Fixes this warning:

>  Command 'make' called directly, use the built-in variable instead
let-def/reason,chenglou/reason,ak3n/reason,facebook/reason,chenglou/reason,ak3n/reason,facebook/reason,cristianoc/reason,chenglou/reason,yunxing/reason,let-def/reason,ak3n/reason,cristianoc/reason,yunxing/reason,yunxing/reason,facebook/reason,cristianoc/reason,let-def/reason,ak3n/reason,yunxing/reason