The Linux kernel build process is not integrated into the rest of the AOSP build - process, but does reuse the same prebuilts to make the build reproducible.
- -Additional Linux kernel build dependencies not provided by the source tree:
- -The dependency on the host libgcc and binutils for building utilities during the - build process will be phased out by moving to a pure LLVM-based toolchain alongside - doing it for the target. This is lagging a bit behind for the kernel, particularly - code built for the host.
-Additional Android Open Source Project build dependencies not provided by the source tree:
@@ -391,108 +376,6 @@ cd ../.. GrapheneOS only provides a stable history via tags. -The kernel needs to be built in advance, since it uses a separate build system.
- -Prebuilts are provided for all the officially supported devices, so this step - is optional.
- -mkdir -p android/kernel/coral -cd android/kernel/coral -repo init -u https://github.com/GrapheneOS/kernel_manifest-coral.git -b 13 -repo sync -j16- -
To build the coral kernel for the Pixel 4 and Pixel 4 XL:
- -KBUILD_BUILD_VERSION=1 KBUILD_BUILD_USER=build-user KBUILD_BUILD_HOST=build-host KBUILD_BUILD_TIMESTAMP="Thu 01 Jan 1970 12:00:00 AM UTC" BUILD_CONFIG=private/msm-google/build.config.floral build/build.sh- -
To build the sunfish kernel for the Pixel 4a:
- -KBUILD_BUILD_VERSION=1 KBUILD_BUILD_USER=build-user KBUILD_BUILD_HOST=build-host KBUILD_BUILD_TIMESTAMP="Thu 01 Jan 1970 12:00:00 AM UTC" BUILD_CONFIG=private/msm-google/build.config.sunfish build/build.sh- -
Replace the files in the OS source tree at
- device/google/coral-kernel/ or
- device/google/sunfish-kernel/ with your build in
- out/android-msm-pixel-4.14/dist/.
For 5th generation Pixels:
- -mkdir -p android/kernel/redbull -cd android/kernel/redbull -repo init -u https://github.com/GrapheneOS/kernel_manifest-redbull.git -b 13 -repo sync -j16- -
To build the redbull kernel for the Pixel 4a (5G), Pixel 5 and Pixel 5a - kernel:
- -BUILD_CONFIG=private/msm-google/build.config.redbull.vintf build/build.sh- -
Replace the files in the OS source tree at
- device/google/redbull-kernel/ (userdebug/eng) and
- device/google/redbull-kernel/vintf/ (user) with your build in
- out/android-msm-pixel-4.19/dist/.
To sync the raviole kernel for the Pixel 6 and Pixel 6 Pro:
- -mkdir -p android/kernel/raviole -cd android/kernel/raviole -repo init -u https://github.com/GrapheneOS/kernel_manifest-raviole.git -b 13 -repo sync -j16- -
To sync the bluejay kernel for the Pixel 6a:
- -mkdir -p android/kernel/bluejay -cd android/kernel/bluejay -repo init -u https://github.com/GrapheneOS/kernel_manifest-bluejay.git -b 13 -repo sync -j16- -
To build the raviole kernel for the Pixel 6 and Pixel 6 Pro:
- -LTO=full BUILD_KERNEL=1 ./build_slider.sh- -
To build the bluejay kernel for the Pixel 6a:
- -LTO=full BUILD_KERNEL=1 ./build_bluejay.sh- -
Replace the files in the OS source tree at
- device/google/raviole-kernel/ or
- device/google/bluejay-kernel/ with your build in
- out/mixed/dist/.
To sync the pantah kernel for the Pixel 7 and Pixel 7 Pro:
- -mkdir -p android/kernel/pantah -cd android/kernel/pantah -repo init -u https://github.com/GrapheneOS/kernel_manifest-pantah.git -b 13 -repo sync -j16- -
To build the pantah kernel for the Pixel 7 and Pixel 7 Pro:
- -LTO=full BUILD_AOSP_KERNEL=1 ./build_cloudripper.sh- -
Replace the files in the OS source tree at
- device/google/pantah-kernel/ with your build in
- out/mixed/dist/.
The Linux kernel is built separately using an AOSP kernel build system + wrapping the upstream Linux kernel build system. Since it's a separate build + system from the rest of the OS, the kernels are built separately. Many of the + repositories are shared with the rest of the OS including the repositories + providing the prebuilt toolchain for reproducible builds not depending on the + tools from the host OS.
+ +Additional Linux kernel build dependencies beyond the AOSP dependencies not + provided by the source tree:
+ +The dependency on the host libgcc and binutils for building utilities during the + build process will be phased out by moving to a pure LLVM-based toolchain alongside + doing it for the target. This is lagging a bit behind for the kernel, particularly + code built for the host.
+ +mkdir -p android/kernel/coral +cd android/kernel/coral +repo init -u https://github.com/GrapheneOS/kernel_manifest-coral.git -b 13 +repo sync -j16+ +
To build the coral kernel for the Pixel 4 and Pixel 4 XL:
+ +KBUILD_BUILD_VERSION=1 KBUILD_BUILD_USER=build-user KBUILD_BUILD_HOST=build-host KBUILD_BUILD_TIMESTAMP="Thu 01 Jan 1970 12:00:00 AM UTC" BUILD_CONFIG=private/msm-google/build.config.floral build/build.sh+ +
To build the sunfish kernel for the Pixel 4a:
+ +KBUILD_BUILD_VERSION=1 KBUILD_BUILD_USER=build-user KBUILD_BUILD_HOST=build-host KBUILD_BUILD_TIMESTAMP="Thu 01 Jan 1970 12:00:00 AM UTC" BUILD_CONFIG=private/msm-google/build.config.sunfish build/build.sh+ +
Replace the files in the OS source tree at
+ device/google/coral-kernel/ or
+ device/google/sunfish-kernel/ with your build in
+ out/android-msm-pixel-4.14/dist/.
For 5th generation Pixels:
+ +mkdir -p android/kernel/redbull +cd android/kernel/redbull +repo init -u https://github.com/GrapheneOS/kernel_manifest-redbull.git -b 13 +repo sync -j16+ +
To build the redbull kernel for the Pixel 4a (5G), Pixel 5 and Pixel 5a + kernel:
+ +BUILD_CONFIG=private/msm-google/build.config.redbull.vintf build/build.sh+ +
Replace the files in the OS source tree at
+ device/google/redbull-kernel/ (userdebug/eng) and
+ device/google/redbull-kernel/vintf/ (user) with your build in
+ out/android-msm-pixel-4.19/dist/.
To sync the raviole kernel for the Pixel 6 and Pixel 6 Pro:
+ +mkdir -p android/kernel/raviole +cd android/kernel/raviole +repo init -u https://github.com/GrapheneOS/kernel_manifest-raviole.git -b 13 +repo sync -j16+ +
To sync the bluejay kernel for the Pixel 6a:
+ +mkdir -p android/kernel/bluejay +cd android/kernel/bluejay +repo init -u https://github.com/GrapheneOS/kernel_manifest-bluejay.git -b 13 +repo sync -j16+ +
To build the raviole kernel for the Pixel 6 and Pixel 6 Pro:
+ +LTO=full BUILD_KERNEL=1 ./build_slider.sh+ +
To build the bluejay kernel for the Pixel 6a:
+ +LTO=full BUILD_KERNEL=1 ./build_bluejay.sh+ +
Replace the files in the OS source tree at
+ device/google/raviole-kernel/ or
+ device/google/bluejay-kernel/ with your build in
+ out/mixed/dist/.
To sync the pantah kernel for the Pixel 7 and Pixel 7 Pro:
+ +mkdir -p android/kernel/pantah +cd android/kernel/pantah +repo init -u https://github.com/GrapheneOS/kernel_manifest-pantah.git -b 13 +repo sync -j16+ +
To build the pantah kernel for the Pixel 7 and Pixel 7 Pro:
+ +LTO=full BUILD_AOSP_KERNEL=1 ./build_cloudripper.sh+ +
Replace the files in the OS source tree at
+ device/google/pantah-kernel/ with your build in
+ out/mixed/dist/.