build_kernel_bookworm.yml

name: Build WLAN Pi Kernel for Debian Bookworm

on:
  push:
    branches:
      - 6.12-bookworm
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-24.04

    env:
      DISTRO: bookworm
      VERSION_CODENAME: bookworm
      KERNEL_TARGET_DISTRO: Debian
      KERNEL_TARGET_VERSION: bookworm

    steps:
      # Step 1: Checkout the repository
      - name: Checkout Repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      # Step 2: Restore APT Cache
      - name: Restore APT Cache
        uses: actions/cache@v3
        with:
          path: cache-apt
          key: ${{ runner.os }}-apt-${{ hashFiles('**/build/build-wlanpi-kernel.sh') }}
          restore-keys: |
            ${{ runner.os }}-apt-

      # Step 3: Prepare APT Cache for Caching
      - name: Prepare APT Cache for Caching
        run: |
          mkdir -p cache-apt
          find /var/cache/apt/archives -path /var/cache/apt/archives/partial -prune -o -type f -name '*.deb' -exec cp {} cache-apt/ \;

      # Step 4: Install Dependencies
      - name: Install Dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y build-essential git libncurses-dev flex bison libssl-dev \
              bc libelf-dev libudev-dev libpci-dev libiberty-dev autoconf automake libtool \
              libpython3-dev crossbuild-essential-arm64 dpkg-dev gcc-aarch64-linux-gnu

      # Step 5: Cache Kernel Build Directory
      - name: Cache Kernel Build Directory
        uses: actions/cache@v3
        with:
          path: linux
          key: ${{ runner.os }}-kernel-${{ hashFiles('**/build/build-wlanpi-kernel.sh') }}
          restore-keys: |
            ${{ runner.os }}-kernel-

      # Step 6: Verify Custom Config File Presence
      - name: Verify Custom Config File Presence
        run: |
          echo "Verifying presence of wlanpi_v8_defconfig in build/ directory..."
          if [ -f build/wlanpi_v8_defconfig ]; then
            echo "wlanpi_v8_defconfig found."
          else
            echo "ERROR: wlanpi_v8_defconfig not found in build/ directory."
            exit 1
          fi

      # Step 7: Make the build script executable
      - name: Make Build Script Executable
        run: chmod +x build/build-wlanpi-kernel.sh

      # Step 8: Execute the build script
      - name: Execute Build Script
        id: build-kernel
        run: ./build/build-wlanpi-kernel.sh

      # Step 9: Extract Kernel Version and Date
      - name: Extract Kernel Version and Date
        id: version-info
        run: |
          DEB_FILE=$(ls output/*.deb | head -n 1)
          DEB_COUNT=$(ls output/*.deb | wc -l)
          if [ "$DEB_COUNT" -ne 1 ]; then
              echo "ERROR: Expected exactly one .deb file, found $DEB_COUNT."
              exit 1
          fi
          echo "Extracting kernel version and build date from $DEB_FILE..."
          # Extract the version and build date from the .deb filename
          # Expected filename format: wlanpi-kernel-bookworm_<version>_arm64.deb
          FILENAME=$(basename "$DEB_FILE" .deb)
          VERSION=$(echo "$FILENAME" | grep -Po 'wlanpi-kernel-bookworm_\K[^_]+')
          BUILD_DATE=$(echo "$VERSION" | grep -Po '[0-9]{8}$')
          KERNEL_VERSION="${VERSION%-${BUILD_DATE}}"
          echo "KERNEL_VERSION=${KERNEL_VERSION}" >> $GITHUB_ENV
          echo "BUILD_DATE=${BUILD_DATE}" >> $GITHUB_ENV
          echo "PACKAGE_NAME=wlanpi-kernel-bookworm" >> $GITHUB_ENV
          echo "PACKAGE_VERSION=${VERSION}" >> $GITHUB_ENV

      # Step 10: Debug Kernel and Package Versions
      - name: Debug Kernel and Package Versions
        run: |
          echo "Kernel Version: ${{ env.KERNEL_VERSION }}"
          echo "Build Date: ${{ env.BUILD_DATE }}"
          echo "Package Name: ${{ env.PACKAGE_NAME }}"
          echo "Package Version: ${{ env.PACKAGE_VERSION }}"

      # Step 11: Upload Debian Package as Artifact
      - name: Upload Debian Package
        uses: actions/upload-artifact@v4  # Updated to v4 to avoid deprecation warnings
        with:
          name: ${{ env.PACKAGE_NAME }}-${{ env.KERNEL_VERSION }}
          path: output/*.deb