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## SPDX-License-Identifier: GPL-2.0-only
project_dir=$(shell pwd)/linuxboot
go_path_dir=$(project_dir)/go
uroot_bin=$(project_dir)/u-root
uroot_package=github.com/u-root/u-root
ARCH-$(CONFIG_LIBUXBOOT_X86_64)=amd64
ARCH-$(CONFIG_LINUXBOOT_X86)=i386
ARCH-$(CONFIG_LINUXBOOT_ARM64)=arm64
go_version=$(shell go version | sed -nr 's/.*go([0-9]+\.[0-9]+.?[0-9]?).*/\1/p' )
go_version_major=$(shell echo $(go_version) | sed -nr 's/^([0-9]+)\.([0-9]+)\.?([0-9]*)$$/\1/p')
go_version_minor=$(shell echo $(go_version) | sed -nr 's/^([0-9]+)\.([0-9]+)\.?([0-9]*)$$/\2/p')
uroot_args+=-build=$(CONFIG_LINUXBOOT_UROOT_FORMAT)
uroot_args+=-initcmd $(CONFIG_LINUXBOOT_UROOT_INITCMD)
uroot_args+=-defaultsh $(CONFIG_LINUXBOOT_UROOT_SHELL)
ifneq (CONFIG_LINUXBOOT_UROOT_FILES,)
uroot_args+=$(foreach file,$(CONFIG_LINUXBOOT_UROOT_FILES),-files $(PWD)/$(file))
endif
uroot_cmds=$(CONFIG_LINUXBOOT_UROOT_COMMANDS)
all: u-root
version:
ifeq ("$(go_version)","")
printf "\n<<Please install Golang >= 1.9 for u-root mode>>\n\n"
exit 1
endif
ifeq ($(shell if [ $(go_version_major) -eq 1 ]; then echo y; fi),y)
ifeq ($(shell if [ $(go_version_minor) -lt 9 ]; then echo y; fi),y)
printf "\n Golang version $(go_version) currently installed.\n\
<<Please install Golang >= 1.9 for u-root mode>>\n\n"
exit 1
endif
endif
get: version
if [ -d "$(go_path_dir)/src/$(uroot_package)" ]; then \
git -C $(go_path_dir)/src/$(uroot_package) checkout --quiet master; \
GOPATH=$(go_path_dir) go get -d -u -v $(uroot_package) || \
echo -e "\n<<u-root package update failed>>\n"; \
else \
GOPATH=$(go_path_dir) go get -d -u -v $(uroot_package) || \
(echo -e "\n<<failed to get u-root package. Please check your internet access>>\n" && \
exit 1); \
fi
checkout: get
git -C $(go_path_dir)/src/$(uroot_package) checkout --quiet $(CONFIG_LINUXBOOT_UROOT_VERSION)
build: checkout
GOPATH=$(go_path_dir) go build -o $(uroot_bin) $(uroot_package)
u-root: build
GOARCH=$(ARCH-y) GOPATH=$(go_path_dir) $(uroot_bin) \
$(uroot_args) -o $(project_dir)/initramfs_u-root.cpio $(uroot_cmds)
.PHONY: all u-root build checkout get version
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