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65 lines
2.1 KiB
Makefile
65 lines
2.1 KiB
Makefile
# This builds the supported LinuxKit kernels. Kernels are wrapped up
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# in a minimal toybox container, which contains the bzImage, a tar
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# ball with modules and the kernel source.
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#
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# Each kernel is pushed to hub twice, once as
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# linuxkit/kernel:<kernel>.<major>.<minor>-<hash> and once as
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# inuxkit/kernel:<kernel>.<major>.x. The <hash> is the git tree hash
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# of the current directory. The build will only rebuild the kernel
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# image if the git tree hash changed.
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# Enable a debug kernel
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DEBUG?=0
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# Git tree hash of this directory. Override to force build
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HASH?=$(shell git ls-tree HEAD -- ../$(notdir $(CURDIR)) | awk '{print $$3}')
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# Name on Hub
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IMAGE:=kernel
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.PHONY: check tag push sign
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# Targets:
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# build: builds all kernels
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# push: pushes all tagged kernel images to hub
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# sign: sign and push all kernel images to hub
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build:
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push:
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sign:
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# A template for defining kernel build
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# Arguments:
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# $1: Full kernel version, e.g., 4.9.22
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# $2: Kernel "series", e.g., 4.9.x
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# This defines targets like:
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# tag_4.9.x, push_4.9.x and sign_4.9.x
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# and adds them as dependencies to the global targets
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define kernel
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build_$(2): Dockerfile Makefile $(wildcard patches-$(2)/*) kernel_config-$(2) kernel_config.debug
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docker pull linuxkit/$(IMAGE):$(1)-$(HASH) || \
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docker build \
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--build-arg KERNEL_VERSION=$(1) \
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--build-arg KERNEL_SERIES=$(2) \
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--no-cache -t linuxkit/$(IMAGE):$(1)-$(HASH) .
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push_$(2): build_$(2)
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docker pull linuxkit/$(IMAGE):$(1)-$(HASH) || \
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(docker push linuxkit/$(IMAGE):$(1)-$(HASH) && \
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docker tag linuxkit/$(IMAGE):$(1)-$(HASH) linuxkit/$(IMAGE):$(2) && \
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docker push linuxkit/$(IMAGE):$(2))
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sign_$(2): build_$(2)
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DOCKER_CONTENT_TRUST=1 docker pull linuxkit/$(IMAGE):$(1)-$(HASH) || \
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(DOCKER_CONTENT_TRUST=1 docker push linuxkit/$(IMAGE):$(1)-$(HASH) && \
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docker tag linuxkit/$(IMAGE):$(1)-$(HASH) linuxkit/$(IMAGE):$(2) && \
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DOCKER_CONTENT_TRUST=1 docker push linuxkit/$(IMAGE):$(2))
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build: build_$(2)
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push: push_$(2)
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sign: sign_$(2)
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endef
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#
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# Build Targets
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#
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$(eval $(call kernel,4.10.12,4.10.x))
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$(eval $(call kernel,4.9.24,4.9.x))
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$(eval $(call kernel,4.4.63,4.4.x))
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