cri-o/vendor/github.com/opencontainers/runtime-tools/contrib/rootfs-builder/Makefile

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rootfs.tar.gz: rootfs/bin/echo
tar -czf $@ -C rootfs .
rootfs/bin/busybox: downloads/stage3-amd64-current.tar.bz2 rootfs-files
gpg --verify $<.DIGESTS.asc
(cd downloads && \
grep -A1 '^# SHA512 HASH' stage3-amd64-current.tar.bz2.DIGESTS.asc | \
grep -v '^--' | \
sha512sum -c)
sudo rm -rf rootfs
sudo mkdir rootfs
sudo tar -xvf downloads/stage3-amd64-current.tar.bz2 -C rootfs \
--no-recursion --wildcards $$(< rootfs-files)
sudo touch $@
rootfs/bin/echo: rootfs/bin/busybox
sudo sh -c 'for COMMAND in $$($< --list); do \
ln -rs $< "rootfs/bin/$${COMMAND}"; \
done'
downloads/stage3-amd64-current.tar.bz2: get-stage3.sh
./$<
touch downloads/stage3-amd64-*.tar.bz2
clean:
rm -f downloads/*
sudo rm -rf rootfs