ref: c6069e28ac0e5a66000f0a887367d7c68410e253 dir: /sys/src/boot/zynq/mkfile.boothead/
</$objtype/mkfile all:V: boothead.$objtype boothead.$objtype: boothead.$O $LD $LDFLAGS -o $target $prereq %.$O: %.c $CC $CFLAGS $stem.c