Christian Werner
c6958fa380
Introduce arm64 emulation setup and enhance the kernel build workflow to support multi-architecture builds. Updated the process to use Docker copy commands for compatibility with docker-in-docker environments, ensuring accurate context access and successful compilation.
115 lines
4.5 KiB
YAML
115 lines
4.5 KiB
YAML
name: Build kernel module
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on:
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# Release flow: triggered when a version tag is pushed (tag a commit on master).
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# Builds every target and publishes the modules to a Gitea release.
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push:
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tags:
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- 'v*'
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# Compile-check flow: every PR that targets master. Builds only, no release.
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pull_request:
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branches:
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- master
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jobs:
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# Build (and thereby compile-check) the module for each pinned kernel version.
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# Runs on both triggers — on a PR this is the whole story; on a tag the
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# `release` job below consumes the artifacts.
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#
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# HEADERS_PKG is fixed to linux-headers-rpi-v8 (64-bit, Pi Zero 2 W): the -v6/-v7
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# headers are 32-bit (armhf) and aren't carried by the arm64 raspberrypi archive
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# this arm64 builder uses.
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build:
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runs-on: ubuntu-latest
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env:
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HEADERS_PKG: linux-headers-rpi-v8
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strategy:
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# Don't cancel the other versions if one fails to build.
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fail-fast: false
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matrix:
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kernel_version:
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- "1:6.12.93-1+rpt1"
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steps:
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- name: Checkout
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uses: actions/checkout@v4
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- name: Build module (${{ matrix.kernel_version }})
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working-directory: kernel
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env:
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HEADERS_PKG: ${{ env.HEADERS_PKG }}
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KERNEL_VERSION: ${{ matrix.kernel_version }}
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run: |
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set -eux
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# arm64 emulation for the builder image (no-op if already registered).
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if [ ! -e /proc/sys/fs/binfmt_misc/qemu-aarch64 ]; then
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docker run --privileged --rm tonistiigi/binfmt --install arm64
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fi
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# Builder image: toolchain + matching raspberrypi kernel headers.
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docker build --platform linux/arm64 \
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--build-arg HEADERS_PKG="$HEADERS_PKG" \
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--build-arg KERNEL_VERSION="$KERNEL_VERSION" \
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-t iec-kbuild .
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# Compile inside the container. We use `docker cp` instead of the bind
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# mount that build-in-docker.sh uses for local builds: under the runner's
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# docker-in-docker, /workspace is a volume the host daemon can't see, so
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# `-v "$PWD:/build"` mounts an empty dir and make finds no Makefile.
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cid=$(docker create --platform linux/arm64 --entrypoint sleep iec-kbuild infinity)
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docker start "$cid"
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docker cp ./. "$cid:/build"
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docker exec "$cid" /usr/local/bin/docker-entrypoint.sh clean
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docker exec "$cid" /usr/local/bin/docker-entrypoint.sh
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docker cp "$cid:/build/iec_listener.ko" ./iec_listener.ko
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docker rm -f "$cid"
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- name: Stage build output (modules/iec_listener_<kernel_version>.ko)
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working-directory: kernel
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run: |
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ver="${{ matrix.kernel_version }}"
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safe="${ver//[:\/]/-}" # path-friendly: 1:6.12.93-1+rpt1 -> 1-6.12.93-1+rpt1
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echo "kernel version $ver -> file modules/iec_listener_${safe}.ko"
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mkdir -p out/modules
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mv iec_listener.ko "out/modules/iec_listener_${safe}.ko"
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- name: Upload build output
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uses: https://github.com/christopherHX/gitea-upload-artifact@v4
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with:
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# Name by the path-friendly version so artifact names stay unique; all
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# of them merge back into the single modules/ folder at download time.
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name: ${{ matrix.kernel_version }}
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path: kernel/out
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if-no-files-found: error
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# Release flow only: merges all built modules into one modules/ folder, wraps it
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# in a single repo-named top folder alongside selftest.sh, zips it and attaches
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# it to the Gitea release for the pushed tag. Skipped entirely on pull requests.
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release:
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needs: build
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if: startsWith(github.ref, 'refs/tags/')
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@v4
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- name: Download all build output
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uses: actions/download-artifact@v4
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with:
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path: dist
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# Merge every artifact back into the shared modules/ folder.
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merge-multiple: true
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- name: Assemble release package
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run: |
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repo="${{ github.event.repository.name }}"
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root="package/$repo"
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mkdir -p "$root"
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cp -r dist/modules "$root"/ # modules/iec_listener_<kernel_version>.ko
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cp kernel/selftest.sh "$root"/ # selftest.sh only at the package root
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(cd package && zip -r "../${repo}-${{ github.ref_name }}.zip" "$repo")
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- name: Publish to Gitea release
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uses: actions/gitea-release-action@v1.3.6
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with:
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api_key: ${{ secrets.GITEA_TOKEN }}
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files: |-
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*.zip
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