👷 [CI] Use checkout instead of mainline setup.sh (#17)

.github/workflows/build-kernel.yml

@@ -34,13 +34,25 @@ jobs:
     name: Build aarch64-${{ matrix.version }}
     runs-on: ubuntu-latest
     steps:
+    - uses: actions/checkout@v3
+      with:
+        path: KernelSU
     - name: Download kernel source
       run: |
+        cd $GITHUB_WORKSPACE
         git clone https://gerrit.googlesource.com/git-repo
         mkdir android-kernel && cd android-kernel
         ../git-repo/repo init -u https://android.googlesource.com/kernel/manifest -b common-${{ matrix.tag }}
         ../git-repo/repo sync
-        curl -LSs "https://raw.githubusercontent.com/tiann/KernelSU/main/kernel/setup.sh" | bash -
+        echo "[+] KernelSU setup"
+        GKI_ROOT=$(pwd)
+        echo "[+] GKI_ROOT: $GKI_ROOT"
+        echo "[+] Copy kernel su driver to $GKI_ROOT/common/drivers"
+        ln -sf $GITHUB_WORKSPACE/KernelSU/kernel $GKI_ROOT/common/drivers/kernelsu
+        echo "[+] Add kernel su driver to Makefile"
+        DRIVER_MAKEFILE=$GKI_ROOT/common/drivers/Makefile
+        grep -q "kernelsu" $DRIVER_MAKEFILE || echo "obj-y += kernelsu/" >> $DRIVER_MAKEFILE
+        echo "[+] KernelSU setup Done."
         curl -Lo gki-kernel.zip https://dl.google.com/android/gki/gki-certified-boot-${{ matrix.tag }}_r1.zip
         unzip gki-kernel.zip
         tools/mkbootimg/unpack_bootimg.py --boot_img=$(find . -maxdepth 1 -name "*.img")