heads/modules/u-root

#
# u-root go runtime
#
# This is not a normal Heads module, since it builds all of its
# own dependencies.
#

u-root_url := github.com/u-root/u-root
u-root_output := $(build)/$(BOARD)/u-root.cpio

export GOPATH=$(build)/go

$(GOPATH):
	$(call do,GO GET,$(u-root_url),\
		go get $(u-root_url) \
	)

$(u-root_output): $(GOPATH)
	$(call do,U-ROOT,$@,\
		$(GOPATH)/bin/u-root \
			-build=bb \
			-format=cpio \
			-o $@ \
	)

# Override the initrd inputs and add in the kernel modules
initrd-$(CONFIG_UROOT) += $(u-root_output)


# If we are building for u-root, disable the default CONFIG_HEADS
ifeq "$(CONFIG_UROOT)" "y"
CONFIG_HEADS=n
endif