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# Copyright (c) 2022, Arm Limited.
# SPDX-License-Identifier: MIT
%YAML 1.2
---
description: >-
Linux kernel build config. Builds the kernel image and set of modules. Image
is exported as the KERNEL artifact, while the modules are exported in a tgz
archive as the KMODULES artifact. Modules are only built if a higher level
layer specifies `export BUILD_KMODULES=true` in the prebuild section.
By default the defconfig is built. Users can optionally add commands to the
prebuild list to modify the config (e.g. `./scripts/config ...`) or even
replace the .config, as required.
A higher level layer can optionally request kselftests to be built by
specifying `export BUILD_KSELFTESTS=true` in the prebuild section. If
specified, the kselftests package is exported in a tgz archive as the
KSELFTESTS artifact.
build:
linux:
repo:
remote: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
revision: v6.1
toolchain: aarch64-linux-gnu-
prebuild:
- export BUILD_KMODULES=false
- export BUILD_KSELFTESTS=false
- export KBUILD_BUILD_HOST="shrinkwrap"
- export ARCH=arm64
- make -j${param:jobs} O=${param:builddir} defconfig
build:
# Finalize the config.
- make -j${param:jobs} O=${param:builddir} olddefconfig
- if [ "$$BUILD_KMODULES" = "true" ]; then
# Make the kernel image and modules.
- make -j${param:jobs} O=${param:builddir} Image modules
# Package the modules into a tgz archive.
- make -j${param:jobs} O=${param:builddir} INSTALL_MOD_PATH=${param:builddir}/modules modules_install
- tar -caf ${param:builddir}/modules.tgz -C ${param:builddir}/modules .
- rm -rf ${param:builddir}/modules
- else
# Make the kernel image.
- make -j${param:jobs} O=${param:builddir} Image
# Dummy modules archive to keep artifacts happy.
- touch ${param:builddir}/modules.tgz
- fi
- if [ "$$BUILD_KSELFTESTS" = "true" ]; then
# Make kselftests and package into tgz archive.
- make -j${param:jobs} O=${param:builddir} headers_install
- make -j${param:jobs} O=${param:builddir} -C tools/testing/selftests install INSTALL_PATH=${param:builddir}/kselftests
- tar -caf ${param:builddir}/kselftests.tgz -C ${param:builddir}/kselftests .
- rm -rf ${param:builddir}/kselftests
- else
# Dummy kselftests archive to keep artifacts happy.
- touch ${param:builddir}/kselftests.tgz
- fi
clean:
- export ARCH=arm64
- make -j${param:jobs} O=${param:builddir} clean
artifacts:
KERNEL: ${param:builddir}/arch/arm64/boot/Image
KMODULES: ${param:builddir}/modules.tgz
KSELFTESTS: ${param:builddir}/kselftests.tgz
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