Android Kernel Actions

Builds Android kernel from the kernel repository.

Note: You don't have to fork this repository, see the examples.

Action Vars

Inputs

Input	Description
arch	Specify what Architecture target to use, currently only supports arm64
compiler	Specify which toochain to use
defconfig	Specify what defconfig command used to generate .config file
image	Specify what is the final build file, usually it's Image.gz-dtb or Image-dtb
dtbo	Pagesize used to build dtbo.img(default is 0 which is disable building dtbo)(aosp-clang only)

Environment Variables

Variable	Description
NAME	Specify the name of the release file, defaults to the name of the repository
KERNEL_PATH	Specify the path of the kernel source, defaults to .
PYTHON_VERSION	Specify the version of Python to use, either 3, or 2. defaults to 3

Outputs

Output	Description
elapsed_time	Time elapsed from building the kernel in seconds, excluding zipping and downloading toolchains
outfile	Path to the final build file
hash	Kernel commit hash

Getting the build

Use other action to actually get the file, for example, with ncipollo/release-action:

- name: Release build
  uses: ncipollo/release-action@v1
  with:
    artifacts: ${{ steps.<step id>.outputs.outfile }}
    token: ${{ secrets.GITHUB_TOKEN }}

Or with appleboy/telegram-action:

- name: Release build
  uses: appleboy/telegram-action@master
  with:
    to: ${{ secrets.CHANNEL_ID }}
    token: ${{ secrets.TELEGRAM_BOT_TOKEN }}
    message: ${{ github.repository }} on ${{ github.sha }} is built!
    document: ${{ steps.<step id>.outputs.outfile }}

Available toolchains

If you want to compile with Clang and LLVM without any of GNU's binutils, make sure your kernel source already supports LLVM options, otherwise compilation may fails. In that case, use clang toolchain with /binutils.

ARM64

Ubuntu's GCC

For older GCC use v0.4.0 action version

• gcc/9
• gcc/10
• gcc/11
• gcc/12

Ubuntu's Clang

For older Clang use v0.4.0 action version

• clang/11, clang/11/binutils
• clang/12, clang/12/binutils
• clang/13, clang/13/binutils
• clang/14, clang/14/binutils
• clang/15, clang/15/binutils

Proton Clang

• proton-clang/<branch, commit hash or tag>, proton-clang/<branch, commit hash or tag>/binutils

Example : proton-clang/master, proton-clang/09fb113/binutils

AOSP's Clang

• aosp-clang/<branch>/<clang version>, aosp-clang/<branch>/<clang version>/binutils

Example : aosp-clang/master/clang-r416183b, aosp-clang/android11-release/clang-r365631c/binutils

Example usage

With ncipollo/release-action

name: Build on Tag

on:
  push:
    tags: '*'

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout kernel source
      uses: actions/checkout@v4

    - name: Android kernel build
      uses: LesVu/android-kernel-actions@master
      id: build
      with:
        arch: arm64
        compiler: gcc/10
        defconfig: vince_defconfig
        image: Image.gz-dtb

    - name: Release build
      uses: ncipollo/release-action@v1
      with:
        artifacts: ${{ steps.build.outputs.outfile }}
        token: ${{ secrets.GITHUB_TOKEN }}

With appleboy/telegram-action

name: Build on push master

on:
  push:
    branches: [ master ]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout kernel source
      uses: actions/checkout@v4

    - name: Android kernel build
      uses: LesVu/android-kernel-actions@master
      id: build
      with:
        arch: arm64
        compiler: gcc/10
        defconfig: vince_defconfig
        image: Image.gz-dtb

    - name: Release build
      uses: appleboy/telegram-action@master
      with:
        to: ${{ secrets.CHANNEL_ID }}
        token: ${{ secrets.TELEGRAM_BOT_TOKEN }}
        message: Kernel is built!, took ${{ steps.build.outputs.elapsed_time }} seconds.
        document: ${{ steps.build.outputs.outfile }}

Troubleshooting

Script InvalidSyntax exceptions

Your kernel source scripts might not support Python 3 yet, set PYTHON_VERSION environment variable to "2".

Error codes

• 1: Packages fails to install
• 2: .config fails to be generated
• 3: Build fails
• 100: Unsupported usage
• 127: Unexpected error