49 lines
2.1 KiB
Docker
49 lines
2.1 KiB
Docker
# syntax=docker/dockerfile:1
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#
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# Build the IEC listener kernel module for Raspberry Pi OS (arm64) inside an
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# emulated arm64 container. The module is compiled natively against the same
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# raspberrypi kernel headers the Pi runs, which keeps the module "vermagic" in
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# sync so `insmod` accepts it on the Pi.
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#
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# Requires qemu-binfmt on the host (the build-in-docker.sh wrapper sets this up):
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# docker run --privileged --rm tonistiigi/binfmt --install arm64
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#
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# Kernel version is configurable via build args:
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# --build-arg HEADERS_PKG=linux-headers-rpi-v8 # 64-bit Pi Zero 2 W (default)
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# --build-arg KERNEL_VERSION=1:6.6.51-1+rpt3 # optional exact pin (see notes)
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#
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# Build context is this kernel/ directory.
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FROM --platform=linux/arm64 debian:bookworm
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# The raspberrypi kernel/headers live in the raspberrypi.com archive, not Debian.
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends ca-certificates curl gnupg \
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&& curl -fsSL https://archive.raspberrypi.com/debian/raspberrypi.gpg.key \
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| gpg --dearmor -o /usr/share/keyrings/raspberrypi-archive-keyring.gpg \
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&& echo "deb [signed-by=/usr/share/keyrings/raspberrypi-archive-keyring.gpg] http://archive.raspberrypi.com/debian/ bookworm main" \
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> /etc/apt/sources.list.d/raspi.list \
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&& rm -rf /var/lib/apt/lists/*
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# Toolchain + module build dependencies.
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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build-essential bc bison flex libssl-dev libelf-dev kmod make \
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&& rm -rf /var/lib/apt/lists/*
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# Kernel headers. Override HEADERS_PKG / KERNEL_VERSION to target a specific Pi
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# kernel. Default targets the current 64-bit Raspberry Pi OS Bookworm kernel.
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ARG HEADERS_PKG=linux-headers-rpi-v8
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ARG KERNEL_VERSION=
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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"${HEADERS_PKG}${KERNEL_VERSION:+=${KERNEL_VERSION}}" \
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&& rm -rf /var/lib/apt/lists/*
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COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
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RUN chmod +x /usr/local/bin/docker-entrypoint.sh
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WORKDIR /build
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ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
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# default: build the module (override with e.g. `clean`)
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CMD []
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