52 lines
1.7 KiB
Markdown
52 lines
1.7 KiB
Markdown
# How to build KernelSU?
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First, you should read the Android Official docs for kernel build:
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1. [Building Kernels](https://source.android.com/docs/setup/build/building-kernels)
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2. [GKI Release Builds](https://source.android.com/docs/core/architecture/kernel/gki-release-builds)
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::: warning
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This page is for GKI devices, if you use an old kernel, please refer [how to integrate KernelSU for old kernel](how-to-integrate-for-non-gki)
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:::
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## Build Kernel
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### Sync the kernel source code
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```sh
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repo init -u https://android.googlesource.com/kernel/manifest
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mv <kernel_manifest.xml> .repo/manifests
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repo init -m manifest.xml
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repo sync
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```
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The `<kernel_manifest.xml>` is a manifest file which can determine a build uniquely, you can use the manifest to do a re-preducable build. You should download the manifest file from [Google GKI release builds](https://source.android.com/docs/core/architecture/kernel/gki-release-builds)
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### Build
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Please check the [official docs](https://source.android.com/docs/setup/build/building-kernels) first.
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For example, we need to build aarch64 kernel image:
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```sh
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LTO=thin BUILD_CONFIG=common/build.config.gki.aarch64 build/build.sh
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```
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Don't forget to add the `LTO=thin` flag, otherwise the build may fail if your computer's memory is less then 24Gb.
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Starting from Android 13, the kernel is built by `bazel`:
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```sh
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tools/bazel build --config=fast //common:kernel_aarch64_dist
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```
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## Build Kernel with KernelSU
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If you can build the kernel successfully, then build KernelSU is so easy, run this command in Kernel source root dir:
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```sh
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curl -LSs "https://raw.githubusercontent.com/tiann/KernelSU/main/kernel/setup.sh" | bash -
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```
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And then rebuild the kernel and you will get a kernel image with KernelSU!
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