github actions: add RPM build workflow for x86_64 and aarch64

Author: bmastbergen

.github/workflows/rpm-build.yml

@@ -0,0 +1,62 @@
+name: RPM Build
+on:
+  pull_request:
+    branches:
+      - '**'
+      - '!mainline'
+
+jobs:
+  rpm-build-job:
+    strategy:
+      matrix:
+        include:
+          - arch: x86_64
+            runner: kernel-build
+            mock_config: rocky-9-x86_64
+          - arch: aarch64
+            runner: kernel-build-arm64
+            mock_config: rocky-9-aarch64
+    runs-on:
+      labels: ${{ matrix.runner }}
+    container:
+      image: rockylinux/rockylinux:9
+      options: --privileged --cpus 8
+    steps:
+      - name: Install tools and libraries
+        run: |
+          dnf install -y epel-release
+          dnf install -y mock git rust cargo zstd which
+          useradd -m -G mock mockbuild
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: "${{ github.event.pull_request.head.sha }}"
+          fetch-depth: 0
+          fetch-tags: true
+
+      - name: Generate tarball
+        run: |
+          git config --global --add safe.directory /__w/kernel-src-tree/kernel-src-tree
+          echo "--- git tag count ---"
+          git tag | wc -l
+          echo "--- git describe ---"
+          git describe --tags --abbrev=0
+          ./ciq/SOURCES/generate_tarball.sh
+
+      - name: Bundle bindgen
+        run: ./ciq/SOURCES/bundle_bindgen.sh ./ciq/SOURCES
+
+      - name: Build SRPM
+        run: |
+          mkdir -p ../build_files
+          chown mockbuild:mock ../build_files
+          su mockbuild -c "mock -v -r ${{ matrix.mock_config }} --resultdir=$(pwd)/../build_files \
+            --buildsrpm \
+            --sources=$(pwd)/ciq/SOURCES \
+            --spec=$(pwd)/ciq/SPECS/kernel-clk6.18.spec"
+
+      - name: Build RPM
+        run: |
+          SRPM=$(ls ../build_files/*.src.rpm | head -1)
+          su mockbuild -c "mock -v -r ${{ matrix.mock_config }} --resultdir=$(pwd)/../build_files $SRPM"