linux-build.yml

name: Linux kernel module

on:
  push:
    paths:
      - 'mrmShared/linux/**'
  pull_request:
    paths:
      - 'mrmShared/linux/**'
  workflow_dispatch:

jobs:
  specific:
    name: With ${{ matrix.version }}
    runs-on: ${{ matrix.os }}
    env:
      KSER: ${{ matrix.series }}
      KVER: ${{ matrix.version }}
      CC: ${{ matrix.cc }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-20.04
            series: 4.x
            version: 4.9.1

          - os: ubuntu-20.04
            series: 5.x
            version: 5.9.6

          - os: ubuntu-latest
            series: latest
            version: latest

    steps:
    - uses: actions/checkout@v2
    - name: Info
      run: |
        gcc --version
    - name: Deps
      run: |
        sudo apt-get update
        # linux-headers-* only to pull in kbuild deps
        sudo apt-get -y install linux-headers-`uname -r` kmod libelf-dev
        [ "${{ matrix.cc }}" != "gcc-4.8" ] || sudo apt-get -y install gcc-4.8
    - name: Setup Linux
      run: |
        install -d kernel
        if [ "$KSER" == "latest" ]; then
          KSER=$(curl -s https://cdn.kernel.org/pub/linux/kernel/ | grep -o 'v[0-9]\+\.[0-9a-zA-Z]\+/' | sed 's/\/\s*//' | sort -t. -k2,2V -k3,3V -k4,4V | tail -n 1 | sed 's/v//')
        fi
        if [ "$KVER" == "latest" ]; then
          KVER=$(curl -s https://cdn.kernel.org/pub/linux/kernel/v$KSER/ | grep -o 'linux-[0-9]\+\.[0-9]\+\.[0-9]\+\.tar\.xz' | sort -t- -k2,2n -k3,3n -k4,4n | tail -n 1 | sed 's/linux-\(.*\)\.tar\.xz/\1/')
        fi
        echo "https://cdn.kernel.org/pub/linux/kernel/v$KSER/linux-$KVER.tar.xz"
        curl -s https://cdn.kernel.org/pub/linux/kernel/v$KSER/linux-$KVER.tar.xz | tar -C kernel --strip-components=1 -xJ
        make -C kernel CC=${CC:=gcc} defconfig
        make -C kernel CC=${CC:=gcc} modules_prepare
    - name: Build
      run: |
        if [[ "${KSER}" != "latest" ]]; then
          make -C mrmShared/linux CC=${CC:=gcc} KERNELDIR="$PWD/kernel"
        else
          # Remove the latest from the workflow status
          make -C mrmShared/linux CC=${CC:=gcc} KERNELDIR="$PWD/kernel" || true
        fi

  host:
    name: With VM host
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - name: Info
      run: |
        uname -a
        gcc --version
    - name: Deps
      run: |
        sudo apt-get update
        sudo apt-get -y install linux-headers-`uname -r`
    - name: Build
      run: make -C mrmShared/linux
    - name: Install/Load
      run: |
        sudo make -C mrmShared/linux modules_install
        sudo depmod -a
        sudo modprobe mrf
        sudo dmesg | tail -n 100