CI: Support for custom clang branch

Signed-off-by: xiaoleGun <1592501605@qq.com>

.github/workflows/build-kernel.yml

@@ -19,6 +19,7 @@ jobs:
         echo "KERNEL_DEFCONFIG=$(cat config.env | grep "KERNEL_DEFCONFIG" | head -n 1 | cut -d "=" -f 2)" >> $GITHUB_ENV
         echo "TARGET_ARCH=$(cat config.env | grep "TARGET_ARCH" | head -n 1 | cut -d "=" -f 2)" >> $GITHUB_ENV
         echo "KERNEL_FILE=$(cat config.env | grep "KERNEL_FILE" | head -n 1 | cut -d "=" -f 2)" >> $GITHUB_ENV
+        echo "CLANG_BRANCH=$(cat config.env | grep "CLANG_BRANCH" | head -n 1 | cut -d "=" -f 2)" >> $GITHUB_ENV
         echo "CLANG_VERSION=$(cat config.env | grep "CLANG_VERSION" | head -n 1 | cut -d "=" -f 2)" >> $GITHUB_ENV
         echo "BUILD_EXTRA_COMMAND=$(cat config.env | grep "EXTRA_BUILD_COMMAND" | head -n 1 | cut -d ":" -f 2)" >> $GITHUB_ENV
         echo "DISABLE-LTO=$(cat config.env | grep "DISABLE-LTO" | head -n 1 | cut -d "=" -f 2)" >> $GITHUB_ENV
@@ -42,7 +43,7 @@ jobs:
       run: |
         cd $GITHUB_WORKSPACE/kernel_workspace
         mkdir clang-aosp
-        wget https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+archive/refs/heads/master-kernel-build-2022/clang-${{ env.CLANG_VERSION }}.tar.gz
+        wget https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+archive/refs/heads/${{ env.CLANG_BRANCH }}/clang-${{ env.CLANG_VERSION }}.tar.gz
         tar -C clang-aosp/ -zxvf clang-${{ env.CLANG_VERSION }}.tar.gz
         mkdir gcc-aosp
         wget https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/+archive/refs/tags/android-12.1.0_r27.tar.gz

README.md

@@ -47,7 +47,19 @@ Fork 本仓库到你的储存库然后按照以下内容编辑config.env，之
 
 例如: Image.gz-dtb
 
-### Clang version
+### Clang
+
+#### Clang Branch
+由于 [#23](https://github.com/xiaoleGun/KernelSU_Action/issues/23) 的需要，我们提供可自定义Google上游分支的选项，主要的有分支有
+| Clang 分支 |
+| ---------- |
+| master |
+| master-kernel-build-2021 |
+| master-kernel-build-2022 |
+
+或者其它分支，请根据自己的需求在 https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86 中寻找
+
+#### Clang version
 
 填写需要使用的 Clang 版本
 | Clang 版本 | 对应 Android 版本 | AOSP-Clang 版本 |

README_EN.md

@@ -45,7 +45,19 @@ Type in the image you need, usually the same as BOARD_KERNEL_IMAGE_NAME in your
 
 e.g. Image.gz-dtb
 
-### Clang version
+### Clang
+
+#### Clang Branch
+Because of the need of [#23](https://github.com/xiaoleGun/KernelSU_Action/issues/23), we have the option to customize the upstream branch of Google. The main branches are
+| Clang Branch |
+| ---------- |
+| master |
+| master-kernel-build-2021 |
+| master-kernel-build-2022 |
+
+Or other branches, please visit according to your needs: https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86
+
+#### Clang version
 
 Type the version of Clang you need to use
 | Clang version | Corresponding Android version | AOSP-Clang version |

config.env

@@ -3,6 +3,7 @@ KERNEL_SOURCE_BRANCH=dsu-test
 KERNEL_DEFCONFIG=vendor/wayne_defconfig
 TARGET_ARCH=arm64
 KERNEL_FILE=Image.gz-dtb
+CLANG_BRANCH=master-kernel-build-2022
 CLANG_VERSION=r450784d
 EXTRA_BUILD_COMMAND:LD=ld.lld
 DISABLE-LTO=false