$(BUILD_DIR)/filesystem:
	@mkdir -p $(BUILD_DIR)
	rm -f $@.partial
	mkdir $@.partial
	fallocate -l 1MiB $@.partial/kernel
	mv $@.partial $@

$(BUILD_DIR)/filesystem.img: $(BUILD_DIR)/filesystem
	@mkdir -p $(BUILD_DIR)
	rm -f $@.partial
	fallocate -l 254MiB $@.partial
	redoxfs-ar $@.partial $<
	mv $@.partial $@