################################################################################
#
# docker-engine
#
################################################################################

DOCKER_ENGINE_VERSION = v17.12.1-ce
DOCKER_ENGINE_SITE = $(call github,docker,docker-ce,$(DOCKER_ENGINE_VERSION))

DOCKER_ENGINE_LICENSE = Apache-2.0
DOCKER_ENGINE_LICENSE_FILES = LICENSE

DOCKER_ENGINE_DEPENDENCIES = host-go host-pkgconf

DOCKER_ENGINE_GOPATH = "$(@D)/gopath"
DOCKER_ENGINE_MAKE_ENV = $(HOST_GO_TARGET_ENV) \
	CGO_ENABLED=1 \
	CGO_NO_EMULATION=1 \
	GOBIN="$(@D)/bin" \
	GOPATH="$(DOCKER_ENGINE_GOPATH)" \
	PKG_CONFIG="$(PKG_CONFIG)" \
	$(TARGET_MAKE_ENV)

DOCKER_ENGINE_GLDFLAGS = \
	-X main.GitCommit=$(DOCKER_ENGINE_VERSION) \
	-X main.Version=$(DOCKER_ENGINE_VERSION) \
	-X github.com/docker/cli/cli.GitCommit=$(DOCKER_ENGINE_VERSION) \
	-X github.com/docker/cli/cli.Version=$(DOCKER_ENGINE_VERSION)

DOCKER_ENGINE_BUILD_TAGS = cgo exclude_graphdriver_zfs autogen
DOCKER_ENGINE_BUILD_TARGETS = cli:docker
DOCKER_ENGINE_BUILD_TARGET_PARSE = \
		export targetpkg=$$(echo $(target) | cut -d: -f1); \
		export targetbin=$$(echo $(target) | cut -d: -f2)

ifeq ($(BR2_STATIC_LIBS),y)
DOCKER_ENGINE_GLDFLAGS += -extldflags '-static'
DOCKER_ENGINE_BUILD_TAGS += static_build
else
ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_STATIC_CLIENT),y)
DOCKER_ENGINE_GLDFLAGS_DOCKER += -extldflags '-static'
endif
endif

ifeq ($(BR2_PACKAGE_LIBSECCOMP),y)
DOCKER_ENGINE_BUILD_TAGS += seccomp
DOCKER_ENGINE_DEPENDENCIES += libseccomp
endif

ifeq ($(BR2_INIT_SYSTEMD),y)
DOCKER_ENGINE_DEPENDENCIES += systemd
DOCKER_ENGINE_BUILD_TAGS += systemd journald
endif

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_DAEMON),y)
DOCKER_ENGINE_BUILD_TAGS += daemon
DOCKER_ENGINE_BUILD_TARGETS += docker:dockerd

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_INIT_DUMB_INIT),y)
DOCKER_ENGINE_INIT = dumb-init
else
DOCKER_ENGINE_INIT = tini
endif

endif

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_EXPERIMENTAL),y)
DOCKER_ENGINE_BUILD_TAGS += experimental
endif

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_DRIVER_BTRFS),y)
DOCKER_ENGINE_DEPENDENCIES += btrfs-progs
else
DOCKER_ENGINE_BUILD_TAGS += exclude_graphdriver_btrfs
endif

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_DRIVER_DEVICEMAPPER),y)
DOCKER_ENGINE_DEPENDENCIES += lvm2
else
DOCKER_ENGINE_BUILD_TAGS += exclude_graphdriver_devicemapper
endif

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_DRIVER_VFS),y)
DOCKER_ENGINE_DEPENDENCIES += gvfs
else
DOCKER_ENGINE_BUILD_TAGS += exclude_graphdriver_vfs
endif

define DOCKER_ENGINE_CONFIGURE_CMDS
	mkdir -p $(DOCKER_ENGINE_GOPATH)/src/github.com/docker
	ln -fs $(@D)/components/engine $(DOCKER_ENGINE_GOPATH)/src/github.com/docker/docker
	ln -fs $(@D)/components/cli $(DOCKER_ENGINE_GOPATH)/src/github.com/docker/cli
	cd $(@D)/components/engine && \
		BUILDTIME="$$(date)" \
		IAMSTATIC="true" \
		VERSION="$(patsubst v%,%,$(DOCKER_ENGINE_VERSION))" \
		PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" $(TARGET_MAKE_ENV) \
		bash ./hack/make/.go-autogen
endef

ifeq ($(BR2_PACKAGE_DOCKER_ENGINE_DAEMON),y)

define DOCKER_ENGINE_INSTALL_INIT_SYSTEMD
	$(INSTALL) -D -m 0644 $(@D)/components/engine/contrib/init/systemd/docker.service \
		$(TARGET_DIR)/usr/lib/systemd/system/docker.service
	$(INSTALL) -D -m 0644 $(@D)/components/engine/contrib/init/systemd/docker.socket \
		$(TARGET_DIR)/usr/lib/systemd/system/docker.socket
	mkdir -p $(TARGET_DIR)/etc/systemd/system/multi-user.target.wants/
	ln -fs ../../../../usr/lib/systemd/system/docker.service \
		$(TARGET_DIR)/etc/systemd/system/multi-user.target.wants/docker.service
endef

define DOCKER_ENGINE_USERS
	- - docker -1 * - - - Docker Application Container Framework
endef

endif

define DOCKER_ENGINE_BUILD_CMDS
	$(foreach target,$(DOCKER_ENGINE_BUILD_TARGETS), \
		$(DOCKER_ENGINE_BUILD_TARGET_PARSE); \
		cd $(@D)/gopath/src/github.com/docker/$${targetpkg}; \
		$(DOCKER_ENGINE_MAKE_ENV) \
		$(HOST_DIR)/bin/go build -v \
			-o $(@D)/bin/$${targetbin} \
			-tags "$(DOCKER_ENGINE_BUILD_TAGS)" \
			-ldflags "$(DOCKER_ENGINE_GLDFLAGS)" \
			./cmd/$${targetbin}
	)
endef

define DOCKER_ENGINE_INSTALL_TARGET_CMDS
	$(foreach target,$(DOCKER_ENGINE_BUILD_TARGETS), \
		$(DOCKER_ENGINE_BUILD_TARGET_PARSE); \
		$(INSTALL) -D -m 0755 $(@D)/bin/$${targetbin} $(TARGET_DIR)/usr/bin/$${targetbin}
	)

	$(if $(filter $(BR2_PACKAGE_DOCKER_ENGINE_DAEMON),y), \
		ln -fs $(DOCKER_ENGINE_INIT) $(TARGET_DIR)/usr/bin/docker-init
	)
endef

$(eval $(generic-package))