CI: Build DAHDI against custom kernels.

.github/workflows/main.yml

@@ -16,6 +16,113 @@ on:
 # kernel-devel mismatch has been detected. Package provides 6.12.0-0.rc0.20240918git4a39ac5b7d62, but running kernel is 6.8.0-1014-azure
 
 jobs:
+  dahdi-kernel-stable:
+    runs-on: ubuntu-24.04
+    name: DAHDI, stable kernel
+    container: debian:12
+    strategy:
+      fail-fast: false
+      matrix:
+        kernel_branch: [
+          'linux-4.14.y',
+          'linux-4.19.y',
+          'linux-5.4.y',
+          'linux-5.10.y',
+          'linux-5.15.y',
+          'linux-5.17.y',
+          'linux-5.18.y',
+          'linux-5.19.y',
+          'linux-6.1.y',
+          'linux-6.5.y',
+          'linux-6.6.y',
+          'linux-6.7.y',
+          'linux-6.8.y',
+          'linux-6.9.y',
+          'linux-6.10.y',
+          'linux-6.11.y',
+          'linux-rolling-lts',
+          'linux-rolling-stable'
+          ]
+    steps:
+     - name: Install packages
+       run: |
+          apt-get -y update
+          apt-get -y upgrade
+          apt-get -y install git gcc make perl-modules flex bison wget libssl-dev libelf-dev bc
+     - name: Clone kernel
+       run: |
+          cd /usr/src
+          git clone --depth 1 --branch ${{matrix.kernel_branch}} git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
+     - name: Build kernel
+       run: |
+          cd /usr/src/linux
+          make -j$(nproc) kernelversion
+          make -j$(nproc) x86_64_defconfig
+          make -j$(nproc) modules_prepare
+          make -j$(nproc)
+          make -j$(nproc) modules
+     - name: Checkout
+       uses: actions/checkout@v4
+     - name: Build DAHDI
+       run: |
+           ./phreaknet.sh make
+           KSRC=/usr/src/linux phreaknet dahdi --drivers
+  dahdi-kernel-mainline:
+    runs-on: ubuntu-24.04
+    name: DAHDI, mainline kernel
+    container: debian:12
+    steps:
+     - name: Install packages
+       run: |
+          apt-get -y update
+          apt-get -y upgrade
+          apt-get -y install git gcc make perl-modules flex bison wget libssl-dev libelf-dev bc
+     - name: Clone kernel
+       run: |
+          cd /usr/src
+          git clone --depth 1 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+     - name: Build kernel
+       run: |
+          cd /usr/src/linux
+          make -j$(nproc) kernelversion
+          make -j$(nproc) x86_64_defconfig
+          make -j$(nproc) modules_prepare
+          make -j$(nproc)
+          make -j$(nproc) modules
+     - name: Checkout
+       uses: actions/checkout@v4
+     - name: Build DAHDI
+       run: |
+           ./phreaknet.sh make
+           KSRC=/usr/src/linux phreaknet dahdi --drivers
+  dahdi-kernel-next:
+    runs-on: ubuntu-24.04
+    name: DAHDI, next kernel
+    container: debian:12
+    steps:
+     - name: Install packages
+       run: |
+          apt-get -y update
+          apt-get -y upgrade
+          apt-get -y install git gcc make perl-modules flex bison wget libssl-dev libelf-dev bc
+     - name: Clone kernel
+       run: |
+          cd /usr/src
+          git clone --depth 1 git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
+     - name: Build kernel
+       run: |
+          cd /usr/src/linux-next
+          make -j$(nproc) kernelversion
+          make -j$(nproc) x86_64_defconfig
+          make -j$(nproc) modules_prepare
+          make -j$(nproc)
+          make -j$(nproc) modules
+     - name: Checkout
+       uses: actions/checkout@v4
+     - name: Build DAHDI
+       run: |
+           ./phreaknet.sh make
+           KSRC=/usr/src/linux-next phreaknet dahdi --drivers
   ubuntu-latest:
     runs-on: ubuntu-24.04
     name: Ubuntu 24.04