Makefile.docker

# This Makefile is run inside the docker machine.

include root/build/versions.env

TYPE ?= raw.xz
ARCH ?= $(shell uname -m)

/build/distro.${TYPE}:

GO_ARCH := $(ARCH:x86_64=amd64)
GO_ARCH := $(GO_ARCH:aarch64=arm64)

INPUTS += root/build/nerdctl-$(NERDCTL_VERSION).tgz

rancher-desktop-distro.%.raw: config.kiwi config.sh ${INPUTS}
	kiwi --debug --profile=lima system build \
		--description /description --target-dir /build

rancher-desktop-distro.%.tar.xz: config.kiwi config.sh ${INPUTS}
	kiwi --debug --profile=wsl system build \
		--description /description --target-dir /build

# Post-kiwi cleanup, then produce the requested output format.
#
# clean-rootfs.sh loop-mounts the raw disk, removes grub2 build tools
# and other build-time artifacts, then fstrim's the filesystem so freed
# blocks become holes. It runs here rather than in pre_disk_sync.sh
# because kiwi re-invokes grub2-mkconfig on the mounted disk after that
# hook.
#
# raw.xz  — for macOS/VZ: qemu and VZ both consume raw directly.
# qcow2.xz — for Linux/qemu: internally zstd-compressed, then
#            xz-compressed for storage/transfer.
/build/distro.raw.xz: /build/rancher-desktop-distro.$(ARCH)-0.100.0.raw
	./clean-rootfs.sh $<
	xz -9 --extreme --stdout $< > $@

/build/distro.qcow2: /build/rancher-desktop-distro.$(ARCH)-0.100.0.raw
	./clean-rootfs.sh $<
	qemu-img convert -c -f raw $< -O qcow2 -o compression_type=zstd,compat=1.1 $@

/build/distro.qcow2.xz: /build/distro.qcow2
	xz -9 --extreme --stdout $< > $@

# Recompress the tarball kiwi leaves behind. Kiwi runs xz in threaded
# mode with 24 MiB blocks, which loses a meaningful chunk of ratio to
# block boundaries; a single xz -9 --extreme pass is ~14% smaller.
/build/distro.tar.xz: /build/rancher-desktop-distro.$(ARCH)-0.100.0.tar.xz
	xz --decompress --stdout $< | xz -9 --extreme > $@

.INTERMEDIATE: /build/distro.qcow2
.DELETE_ON_ERROR: # Avoid half-downloaded files