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path: root/.github/workflows/kernel.yml
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name: Build Kernel

on:
  pull_request:
    paths:
      - '.github/workflows/kernel.yml'
      - 'include/kernel-*'
      - 'package/kernel/**'
      - 'target/linux/generic/**'
  push:
    paths:
      - '.github/workflows/kernel.yml'
      - 'include/kernel-*'
      - 'package/kernel/**'
      - 'target/linux/generic/**'

permissions:
  contents: read

jobs:
  determine_targets:
    name: Set targets
    runs-on: ubuntu-latest
    outputs:
      target: ${{ steps.find_targets.outputs.target }}
      owner_lc: ${{ steps.lower_owner.outputs.owner_lc }}
      ccache_hash: ${{ steps.ccache_hash.outputs.ccache_hash }}

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set lower case owner name
        id: lower_owner
        run: |
          OWNER_LC=$(echo "${{ github.repository_owner }}" \
            | tr '[:upper:]' '[:lower:]')
          echo "::set-output name=owner_lc::$OWNER_LC"

      - name: Generate ccache hash
        id: ccache_hash
        run: |
          CCACHE_HASH=$(md5sum include/kernel-* | awk '{ print $1 }' \
           | md5sum | awk '{ print $1 }')
          echo "::set-output name=ccache_hash::$CCACHE_HASH"

      - name: Set targets
        id: find_targets
        run: |
          export TARGETS="$(perl ./scripts/dump-target-info.pl targets 2>/dev/null \
            | sort -u -t '/' -k1,1 \
            | awk '{ print $1 }')"

          JSON='['
          FIRST=1
          for TARGET in $TARGETS; do
            [[ $FIRST -ne 1 ]] && JSON="$JSON"','
            JSON="$JSON"'"'"${TARGET}"'"'
            FIRST=0
          done
          JSON="$JSON"']'

           echo -e "\n---- targets ----\n"
           echo "$JSON"
           echo -e "\n---- targets ----\n"

           echo "::set-output name=target::$JSON"

  build:
    name: Build Kernel with external toolchain
    needs: determine_targets
    runs-on: ubuntu-latest
    strategy:
       fail-fast: False
       matrix:
         target: ${{fromJson(needs.determine_targets.outputs.target)}}

    container: ghcr.io/${{ needs.determine_targets.outputs.owner_lc }}/tools:latest

    permissions:
      contents: read
      packages: read

    steps:
      - name: Checkout master directory
        uses: actions/checkout@v3
        with:
          path: openwrt

      - name: Checkout packages feed
        uses: actions/checkout@v3
        with:
          repository: openwrt/packages
          path: openwrt/feeds/packages

      - name: Checkout luci feed
        uses: actions/checkout@v3
        with:
          repository: openwrt/luci
          path: openwrt/feeds/luci

      - name: Checkout routing feed
        uses: actions/checkout@v3
        with:
          repository: openwrt/routing
          path: openwrt/feeds/routing

      - name: Checkout telephony feed
        uses: actions/checkout@v3
        with:
          repository: openwrt/telephony
          path: openwrt/feeds/telephony

      - name: Fix permission
        run: |
          chown -R buildbot:buildbot openwrt

      - name: Initialization environment
        run: |
          TARGET=$(echo ${{ matrix.target }} | cut -d "/" -f 1)
          SUBTARGET=$(echo ${{ matrix.target }} | cut -d "/" -f 2)
          echo "TARGET=$TARGET" >> "$GITHUB_ENV"
          echo "SUBTARGET=$SUBTARGET" >> "$GITHUB_ENV"

      - name: Update & Install feeds
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: |
          ./scripts/feeds update -a
          ./scripts/feeds install -a

      - name: Parse toolchain file
        working-directory: openwrt
        run: |
          TOOLCHAIN_STRING="$(curl "https://downloads.cdn.openwrt.org/snapshots/targets/${{ env.TARGET }}/${{ env.SUBTARGET }}/sha256sums" \
            | grep ".*openwrt-toolchain.*tar.xz")"
          TOOLCHAIN_FILE=$(echo "$TOOLCHAIN_STRING" | sed -n -e 's/.*\(openwrt-toolchain.*\).tar.xz/\1/p')
          TOOLCHAIN_SHA256=$(echo "$TOOLCHAIN_STRING" | cut -d ' ' -f 1)

          echo "TOOLCHAIN_FILE=$TOOLCHAIN_FILE" >> "$GITHUB_ENV"
          echo "TOOLCHAIN_SHA256=$TOOLCHAIN_SHA256" >> "$GITHUB_ENV"

      - name: Cache external toolchain
        id: cache-external-toolchain
        uses: actions/cache@v3
        with:
          path: openwrt/${{ env.TOOLCHAIN_FILE }}
          key: ${{ env.TOOLCHAIN_FILE }}-${{ env.TOOLCHAIN_SHA256 }}

      - name: Cache ccache
        uses: actions/cache@v3
        with:
          path: openwrt/.ccache
          key: ccache-kernel-${{ env.TARGET }}/${{ env.SUBTARGET }}-${{ needs.determine_targets.outputs.ccache_hash }}
          restore-keys: |
            ccache-kernel-${{ env.TARGET }}/${{ env.SUBTARGET }}-

      - name: Download external toolchain
        if: ${{ steps.cache-external-toolchain.outputs.cache-hit != 'true' }}
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: |
          wget -O - https://downloads.cdn.openwrt.org/snapshots/targets/${{ env.TARGET }}/${{ env.SUBTARGET }}/${TOOLCHAIN_FILE}.tar.xz \
            | tar --xz -xf -

      - name: Extract prebuilt tools
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: ./scripts/ext-tools.sh --tools /tools.tar

      - name: Configure external toolchain
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: |
          echo CONFIG_ALL_KMODS=y >> .config
          echo CONFIG_DEVEL=y >> .config
          echo CONFIG_AUTOREMOVE=y >> .config
          echo CONFIG_CCACHE=y >> .config

          ./scripts/ext-toolchain.sh \
            --toolchain ${{ env.TOOLCHAIN_FILE }}/toolchain-* \
            --overwrite-config \
            --config ${{ env.TARGET }}/${{ env.SUBTARGET }}

      - name: Show configuration
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: ./scripts/diffconfig.sh

      - name: Build tools
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: make tools/install -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh

      - name: Build toolchain
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: make toolchain/install -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh

      - name: Build Kernel
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: make target/compile -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh

      - name: Build Kernel Kmods
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: make package/linux/compile -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh

      - name: Upload logs
        if: failure()
        uses: actions/upload-artifact@v3
        with:
          name: ${{ env.TARGET }}-${{ env.SUBTARGET }}-logs
          path: "openwrt/logs"

  check-patch:
    name: Check Kernel patches
    needs: determine_targets
    runs-on: ubuntu-latest
    strategy:
       fail-fast: False
       matrix:
         target: ${{fromJson(needs.determine_targets.outputs.target)}}

    container: ghcr.io/${{ needs.determine_targets.outputs.owner_lc }}/tools:latest

    permissions:
      contents: read
      packages: read

    steps:
      - name: Checkout master directory
        uses: actions/checkout@v3
        with:
          path: openwrt

      - name: Fix permission
        run: |
          chown -R buildbot:buildbot openwrt

      - name: Initialization environment
        run: |
          TARGET=$(echo ${{ matrix.target }} | cut -d "/" -f 1)
          SUBTARGET=$(echo ${{ matrix.target }} | cut -d "/" -f 2)
          echo "TARGET=$TARGET" >> "$GITHUB_ENV"
          echo "SUBTARGET=$SUBTARGET" >> "$GITHUB_ENV"

      - name: Extract prebuilt tools
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: ./scripts/ext-tools.sh --tools /tools.tar

      - name: Setup Config
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: |
          echo CONFIG_ALL_KMODS=y >> .config
          echo CONFIG_DEVEL=y >> .config
          echo CONFIG_AUTOREMOVE=y >> .config
          echo CONFIG_CCACHE=y >> .config

          echo "CONFIG_TARGET_${{ env.TARGET }}=y" >> .config
          echo "CONFIG_TARGET_${{ env.TARGET }}_${{ env.SUBTARGET }}=y" >> .config

          make defconfig

      - name: Build tools
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: make tools/quilt/compile -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh

      - name: Refresh Kernel patches
        shell: su buildbot -c "sh -e {0}"
        working-directory: openwrt
        run: |
          make target/linux/refresh V=s

          . .github/workflows/scripts/ci_helpers.sh

          if git diff --name-only --exit-code; then
            success "Kernel patches for ${{ env.TARGET }}/${{ env.SUBTARGET }} seems ok"
          else
            err "Kernel patches for ${{ env.TARGET }}/${{ env.SUBTARGET }} require refresh. (run 'make target/linux/refresh' and force push this pr)"
            exit 1
          fi