poky/meta/classes-recipe/kernel.bbclass
Kamel Bouhara (Schneider Electric) 6d222750d5 kernel.bbclass: Add task to export kernel configuration to SPDX
Introduce a new bitbake task do_create_kernel_config_spdx that extracts
the kernel configuration from ${B}/.config and exports it into the
recipe's SPDX document as a separate build_Build object.

The kernel config parameters are stored as SPDX DictionaryEntry objects
and linked to the main kernel build using an ancestorOf relationship.

This enables the kernel build's configuration to be explicitly captured
in the SPDX document for compliance, auditing, and reproducibility.

The task is gated by SPDX_INCLUDE_KERNEL_CONFIG (default = "0").

Reviewed-by: Joshua Watt <JPEWhacker@gmail.com>
(From OE-Core rev: 1fff29a0428778929ffa530482ebf7db95f1e0ae)

Signed-off-by: Kamel Bouhara (Schneider Electric) <kamel.bouhara@bootlin.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 228a968e7c47d811c06143279bdb0f9c5f374bef)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
2025-12-31 07:49:31 -08:00

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#
# Copyright OpenEmbedded Contributors
#
# SPDX-License-Identifier: MIT
#
inherit linux-kernel-base kernel-module-split
COMPATIBLE_HOST = ".*-linux"
KERNEL_PACKAGE_NAME ??= "kernel"
KERNEL_DEPLOYSUBDIR ??= "${@ "" if (d.getVar("KERNEL_PACKAGE_NAME") == "kernel") else d.getVar("KERNEL_PACKAGE_NAME") }"
PROVIDES += "virtual/kernel"
DEPENDS += "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}gcc kmod-native bc-native bison-native"
DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.lzo", "lzop-native", "", d)}"
DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.lz4", "lz4-native", "", d)}"
DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.zst", "zstd-native", "", d)}"
PACKAGE_WRITE_DEPS += "depmodwrapper-cross"
do_deploy[depends] += "depmodwrapper-cross:do_populate_sysroot gzip-native:do_populate_sysroot"
do_clean[depends] += "make-mod-scripts:do_clean"
CVE_PRODUCT ?= "linux_kernel"
S = "${STAGING_KERNEL_DIR}"
B = "${WORKDIR}/build"
KBUILD_OUTPUT = "${B}"
OE_TERMINAL_EXPORTS += "KBUILD_OUTPUT"
# we include gcc above, we dont need virtual/libc
INHIBIT_DEFAULT_DEPS = "1"
KERNEL_IMAGETYPE ?= "zImage"
INITRAMFS_IMAGE ?= ""
INITRAMFS_TASK ?= ""
INITRAMFS_IMAGE_BUNDLE ?= ""
INITRAMFS_DEPLOY_DIR_IMAGE ?= "${DEPLOY_DIR_IMAGE}"
INITRAMFS_MULTICONFIG ?= ""
# KERNEL_VERSION is extracted from source code. It is evaluated as
# None for the first parsing, since the code has not been fetched.
# After the code is fetched, it will be evaluated as real version
# number and cause kernel to be rebuilt. To avoid this, make
# KERNEL_VERSION_NAME and KERNEL_VERSION_PKG_NAME depend on
# LINUX_VERSION which is a constant.
KERNEL_VERSION_NAME = "${@d.getVar('KERNEL_VERSION') or ""}"
KERNEL_VERSION_NAME[vardepvalue] = "${LINUX_VERSION}"
KERNEL_VERSION_PKG_NAME = "${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}"
KERNEL_VERSION_PKG_NAME[vardepvalue] = "${LINUX_VERSION}"
python __anonymous () {
pn = d.getVar("PN")
kpn = d.getVar("KERNEL_PACKAGE_NAME")
# XXX Remove this after bug 11905 is resolved
# FILES:${KERNEL_PACKAGE_NAME}-dev doesn't expand correctly
if kpn == pn:
bb.warn("Some packages (E.g. *-dev) might be missing due to "
"bug 11905 (variable KERNEL_PACKAGE_NAME == PN)")
# The default kernel recipe builds in a shared location defined by
# bitbake/distro confs: STAGING_KERNEL_DIR and STAGING_KERNEL_BUILDDIR.
# Set these variables to directories under ${WORKDIR} in alternate
# kernel recipes (I.e. where KERNEL_PACKAGE_NAME != kernel) so that they
# may build in parallel with the default kernel without clobbering.
if kpn != "kernel":
workdir = d.getVar("WORKDIR")
sourceDir = os.path.join(workdir, 'kernel-source')
artifactsDir = os.path.join(workdir, 'kernel-build-artifacts')
d.setVar("STAGING_KERNEL_DIR", sourceDir)
d.setVar("STAGING_KERNEL_BUILDDIR", artifactsDir)
# Merge KERNEL_IMAGETYPE and KERNEL_ALT_IMAGETYPE into KERNEL_IMAGETYPES
type = d.getVar('KERNEL_IMAGETYPE') or ""
alttype = d.getVar('KERNEL_ALT_IMAGETYPE') or ""
types = d.getVar('KERNEL_IMAGETYPES') or ""
if type not in types.split():
types = (type + ' ' + types).strip()
if alttype not in types.split():
types = (alttype + ' ' + types).strip()
d.setVar('KERNEL_IMAGETYPES', types)
# KERNEL_IMAGETYPES may contain a mixture of image types supported directly
# by the kernel build system and types which are created by post-processing
# the output of the kernel build system (e.g. compressing vmlinux ->
# vmlinux.gz in kernel_do_transform_kernel()).
# KERNEL_IMAGETYPE_FOR_MAKE should contain only image types supported
# directly by the kernel build system.
if not d.getVar('KERNEL_IMAGETYPE_FOR_MAKE'):
typeformake = set()
for type in types.split():
if type == 'vmlinux.gz':
type = 'vmlinux'
typeformake.add(type)
d.setVar('KERNEL_IMAGETYPE_FOR_MAKE', ' '.join(sorted(typeformake)))
kname = d.getVar('KERNEL_PACKAGE_NAME') or "kernel"
imagedest = d.getVar('KERNEL_IMAGEDEST')
for type in types.split():
if bb.data.inherits_class('nopackages', d):
continue
typelower = type.lower()
d.appendVar('PACKAGES', ' %s-image-%s' % (kname, typelower))
d.setVar('FILES:' + kname + '-image-' + typelower, '/' + imagedest + '/' + type + '-${KERNEL_VERSION_NAME}' + ' /' + imagedest + '/' + type)
d.appendVar('RDEPENDS:%s-image' % kname, ' %s-image-%s (= ${EXTENDPKGV})' % (kname, typelower))
splitmods = d.getVar("KERNEL_SPLIT_MODULES")
if splitmods != '1':
d.appendVar('RDEPENDS:%s-image' % kname, ' %s-modules (= ${EXTENDPKGV})' % kname)
d.appendVar('RDEPENDS:%s-image-%s' % (kname, typelower), ' %s-modules-${KERNEL_VERSION_PKG_NAME} (= ${EXTENDPKGV})' % kname)
d.setVar('PKG:%s-modules' % kname, '%s-modules-${KERNEL_VERSION_PKG_NAME}' % kname)
d.appendVar('RPROVIDES:%s-modules' % kname, ' %s-modules-${KERNEL_VERSION_PKG_NAME}' % kname)
d.setVar('PKG:%s-image-%s' % (kname,typelower), '%s-image-%s-${KERNEL_VERSION_PKG_NAME}' % (kname, typelower))
d.setVar('ALLOW_EMPTY:%s-image-%s' % (kname, typelower), '1')
if d.getVar('KERNEL_IMAGETYPE_SYMLINK') == '1':
d.prependVar('pkg_postinst:%s-image-%s' % (kname,typelower), """set +e
if [ -n "$D" ]; then
ln -sf %s-${KERNEL_VERSION} $D/${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
else
ln -sf %s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
if [ $? -ne 0 ]; then
echo "Filesystem on ${KERNEL_IMAGEDEST}/ doesn't support symlinks, falling back to copied image (%s)."
install -m 0644 ${KERNEL_IMAGEDEST}/%s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s
fi
fi
set -e
""" % (type, type, type, type, type, type, type))
d.setVar('pkg_postrm:%s-image-%s' % (kname,typelower), """set +e
if [ -f "${KERNEL_IMAGEDEST}/%s" -o -L "${KERNEL_IMAGEDEST}/%s" ]; then
rm -f ${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
fi
set -e
""" % (type, type, type))
image = d.getVar('INITRAMFS_IMAGE')
# If the INTIRAMFS_IMAGE is set but the INITRAMFS_IMAGE_BUNDLE is set to 0,
# the do_bundle_initramfs does nothing, but the INITRAMFS_IMAGE is built
# standalone for use by wic and other tools.
if image:
if d.getVar('INITRAMFS_MULTICONFIG'):
d.appendVarFlag('do_bundle_initramfs', 'mcdepends', ' mc::${INITRAMFS_MULTICONFIG}:${INITRAMFS_IMAGE}:do_image_complete')
else:
d.appendVarFlag('do_bundle_initramfs', 'depends', ' ${INITRAMFS_IMAGE}:do_image_complete')
if image and bb.utils.to_boolean(d.getVar('INITRAMFS_IMAGE_BUNDLE')):
bb.build.addtask('do_transform_bundled_initramfs', 'do_deploy', 'do_bundle_initramfs', d)
# NOTE: setting INITRAMFS_TASK is for backward compatibility
# The preferred method is to set INITRAMFS_IMAGE, because
# this INITRAMFS_TASK has circular dependency problems
# if the initramfs requires kernel modules
image_task = d.getVar('INITRAMFS_TASK')
if image_task:
d.appendVarFlag('do_configure', 'depends', ' ${INITRAMFS_TASK}')
}
# Here we pull in all various kernel image types which we support.
#
# In case you're wondering why kernel.bbclass inherits the other image
# types instead of the other way around, the reason for that is to
# maintain compatibility with various currently existing meta-layers.
# By pulling in the various kernel image types here, we retain the
# original behavior of kernel.bbclass, so no meta-layers should get
# broken.
#
# KERNEL_CLASSES by default pulls in kernel-uimage.bbclass, since this
# used to be the default behavior when only uImage was supported. This
# variable can be appended by users who implement support for new kernel
# image types.
KERNEL_CLASSES ?= " kernel-uimage "
inherit_defer ${KERNEL_CLASSES}
# Old style kernels may set ${S} = ${WORKDIR}/git for example
# We need to move these over to STAGING_KERNEL_DIR. We can't just
# create the symlink in advance as the git fetcher can't cope with
# the symlink.
do_unpack[cleandirs] += " ${S} ${STAGING_KERNEL_DIR} ${B} ${STAGING_KERNEL_BUILDDIR}"
do_clean[cleandirs] += " ${S} ${STAGING_KERNEL_DIR} ${B} ${STAGING_KERNEL_BUILDDIR}"
python do_symlink_kernsrc () {
s = d.getVar("S")
kernsrc = d.getVar("STAGING_KERNEL_DIR")
if s != kernsrc:
bb.utils.mkdirhier(kernsrc)
bb.utils.remove(kernsrc, recurse=True)
if s[-1] == '/':
# drop trailing slash, so that os.symlink(kernsrc, s) doesn't use s as
# directory name and fail
s = s[:-1]
if d.getVar("EXTERNALSRC"):
# With EXTERNALSRC S will not be wiped so we can symlink to it
os.symlink(s, kernsrc)
else:
import shutil
shutil.move(s, kernsrc)
os.symlink(kernsrc, s)
}
# do_patch is normally ordered before do_configure, but
# externalsrc.bbclass deletes do_patch, breaking the dependency of
# do_configure on do_symlink_kernsrc.
addtask symlink_kernsrc before do_patch do_configure after do_unpack
inherit kernel-arch deploy
PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-module-.*"
PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-image-.*"
PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-firmware-.*"
export OS = "${TARGET_OS}"
export CROSS_COMPILE = "${TARGET_PREFIX}"
KERNEL_RELEASE ?= "${KERNEL_VERSION}"
# The directory where built kernel lies in the kernel tree
KERNEL_OUTPUT_DIR ?= "arch/${ARCH}/boot"
KERNEL_IMAGEDEST ?= "boot"
KERNEL_DTBDEST ?= "${KERNEL_IMAGEDEST}"
KERNEL_DTBVENDORED ?= "0"
#
# configuration
#
export CMDLINE_CONSOLE = "console=${@d.getVar("KERNEL_CONSOLE") or "ttyS0"}"
KERNEL_VERSION = "${@get_kernelversion_headers('${B}')}"
# kernels are generally machine specific
PACKAGE_ARCH = "${MACHINE_ARCH}"
# U-Boot support
UBOOT_ENTRYPOINT ?= "20008000"
UBOOT_LOADADDRESS ?= "${UBOOT_ENTRYPOINT}"
# Some Linux kernel configurations need additional parameters on the command line
KERNEL_EXTRA_ARGS ?= ""
EXTRA_OEMAKE += ' CC="${KERNEL_CC}" LD="${KERNEL_LD}" OBJCOPY="${KERNEL_OBJCOPY}" STRIP="${KERNEL_STRIP}"'
EXTRA_OEMAKE += ' HOSTCC="${BUILD_CC}" HOSTCFLAGS="${BUILD_CFLAGS}" HOSTLDFLAGS="${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}"'
EXTRA_OEMAKE += ' HOSTCXX="${BUILD_CXX}" HOSTCXXFLAGS="${BUILD_CXXFLAGS}"'
# Only for newer kernels (5.19+), native pkg-config variables are set for older kernels when building kernel and modules
EXTRA_OEMAKE += ' HOSTPKG_CONFIG="pkg-config-native"'
KERNEL_ALT_IMAGETYPE ??= ""
copy_initramfs() {
echo "Copying initramfs into ./usr ..."
# In case the directory is not created yet from the first pass compile:
mkdir -p ${B}/usr
# Find and use the first initramfs image archive type we find
rm -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
for img in cpio cpio.gz cpio.lz4 cpio.lzo cpio.lzma cpio.xz cpio.zst; do
if [ -e "${INITRAMFS_DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img" ]; then
cp ${INITRAMFS_DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img ${B}/usr/.
case $img in
*gz)
echo "gzip decompressing image"
gunzip -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*lz4)
echo "lz4 decompressing image"
lz4 -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
break
;;
*lzo)
echo "lzo decompressing image"
lzop -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*lzma)
echo "lzma decompressing image"
lzma -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*xz)
echo "xz decompressing image"
xz -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*zst)
echo "zst decompressing image"
zstd -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
esac
break
fi
done
# Verify that the above loop found a initramfs, fail otherwise
[ -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio ] && echo "Finished copy of initramfs into ./usr" || die "Could not find any ${INITRAMFS_DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.cpio{.gz|.lz4|.lzo|.lzma|.xz|.zst) for bundling; INITRAMFS_IMAGE_NAME might be wrong."
}
do_bundle_initramfs () {
if [ ! -z "${INITRAMFS_IMAGE}" -a x"${INITRAMFS_IMAGE_BUNDLE}" = x1 ]; then
echo "Creating a kernel image with a bundled initramfs..."
copy_initramfs
# Backing up kernel image relies on its type(regular file or symbolic link)
tmp_path=""
for imageType in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do
if [ -h ${KERNEL_OUTPUT_DIR}/$imageType ] ; then
linkpath=`readlink -n ${KERNEL_OUTPUT_DIR}/$imageType`
realpath=`readlink -fn ${KERNEL_OUTPUT_DIR}/$imageType`
mv -f $realpath $realpath.bak
tmp_path=$tmp_path" "$imageType"#"$linkpath"#"$realpath
elif [ -f ${KERNEL_OUTPUT_DIR}/$imageType ]; then
mv -f ${KERNEL_OUTPUT_DIR}/$imageType ${KERNEL_OUTPUT_DIR}/$imageType.bak
tmp_path=$tmp_path" "$imageType"##"
fi
done
use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
kernel_do_compile
# Restoring kernel image
for tp in $tmp_path ; do
imageType=`echo $tp|cut -d "#" -f 1`
linkpath=`echo $tp|cut -d "#" -f 2`
realpath=`echo $tp|cut -d "#" -f 3`
if [ -n "$realpath" ]; then
mv -f $realpath $realpath.initramfs
mv -f $realpath.bak $realpath
ln -sf $linkpath.initramfs ${B}/${KERNEL_OUTPUT_DIR}/$imageType.initramfs
else
mv -f ${KERNEL_OUTPUT_DIR}/$imageType ${KERNEL_OUTPUT_DIR}/$imageType.initramfs
mv -f ${KERNEL_OUTPUT_DIR}/$imageType.bak ${KERNEL_OUTPUT_DIR}/$imageType
fi
done
fi
}
do_bundle_initramfs[dirs] = "${B}"
kernel_do_transform_bundled_initramfs() {
# vmlinux.gz is not built by kernel
if (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux\.gz"); then
gzip -9cn < ${KERNEL_OUTPUT_DIR}/vmlinux.initramfs > ${KERNEL_OUTPUT_DIR}/vmlinux.gz.initramfs
fi
}
do_transform_bundled_initramfs[dirs] = "${B}"
python do_package:prepend () {
d.setVar('STRIP', d.getVar('KERNEL_STRIP').strip())
}
python do_devshell:prepend () {
os.environ["LDFLAGS"] = ''
}
addtask bundle_initramfs after do_install before do_deploy
KERNEL_DEBUG_TIMESTAMPS ??= "0"
kernel_do_compile() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
# setup native pkg-config variables (kconfig scripts call pkg-config directly, cannot generically be overriden to pkg-config-native)
export PKG_CONFIG_DIR="${STAGING_DIR_NATIVE}${libdir_native}/pkgconfig"
export PKG_CONFIG_PATH="$PKG_CONFIG_DIR:${STAGING_DATADIR_NATIVE}/pkgconfig"
export PKG_CONFIG_LIBDIR="$PKG_CONFIG_DIR"
export PKG_CONFIG_SYSROOT_DIR=""
if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then
# kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not
# be set....
if [ "${SOURCE_DATE_EPOCH}" = "" -o "${SOURCE_DATE_EPOCH}" = "0" ]; then
# The source directory is not necessarily a git repository, so we
# specify the git-dir to ensure that git does not query a
# repository in any parent directory.
SOURCE_DATE_EPOCH=`git --git-dir="${S}/.git" log -1 --pretty=%ct 2>/dev/null || echo "${REPRODUCIBLE_TIMESTAMP_ROOTFS}"`
fi
ts=`LC_ALL=C date -d @$SOURCE_DATE_EPOCH`
export KBUILD_BUILD_TIMESTAMP="$ts"
export KCONFIG_NOTIMESTAMP=1
bbnote "KBUILD_BUILD_TIMESTAMP: $ts"
else
ts=`LC_ALL=C date`
export KBUILD_BUILD_TIMESTAMP="$ts"
bbnote "KBUILD_BUILD_TIMESTAMP: $ts"
fi
# The $use_alternate_initrd is only set from
# do_bundle_initramfs() This variable is specifically for the
# case where we are making a second pass at the kernel
# compilation and we want to force the kernel build to use a
# different initramfs image. The way to do that in the kernel
# is to specify:
# make ...args... CONFIG_INITRAMFS_SOURCE=some_other_initramfs.cpio
if [ "$use_alternate_initrd" = "" ] && [ "${INITRAMFS_TASK}" != "" ] ; then
# The old style way of copying an prebuilt image and building it
# is turned on via INTIRAMFS_TASK != ""
copy_initramfs
use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
fi
for typeformake in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do
oe_runmake ${PARALLEL_MAKE} ${typeformake} ${KERNEL_EXTRA_ARGS} $use_alternate_initrd
done
}
kernel_do_transform_kernel() {
# vmlinux.gz is not built by kernel
if (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux\.gz"); then
mkdir -p "${KERNEL_OUTPUT_DIR}"
gzip -9cn < ${B}/vmlinux > "${KERNEL_OUTPUT_DIR}/vmlinux.gz"
fi
}
do_transform_kernel[dirs] = "${B}"
addtask transform_kernel after do_compile before do_install
do_compile_kernelmodules() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
# setup native pkg-config variables (kconfig scripts call pkg-config directly, cannot generically be overriden to pkg-config-native)
export PKG_CONFIG_DIR="${STAGING_DIR_NATIVE}${libdir_native}/pkgconfig"
export PKG_CONFIG_PATH="$PKG_CONFIG_DIR:${STAGING_DATADIR_NATIVE}/pkgconfig"
export PKG_CONFIG_LIBDIR="$PKG_CONFIG_DIR"
export PKG_CONFIG_SYSROOT_DIR=""
if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then
# kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not
# be set....
if [ "${SOURCE_DATE_EPOCH}" = "" -o "${SOURCE_DATE_EPOCH}" = "0" ]; then
# The source directory is not necessarily a git repository, so we
# specify the git-dir to ensure that git does not query a
# repository in any parent directory.
SOURCE_DATE_EPOCH=`git --git-dir="${S}/.git" log -1 --pretty=%ct 2>/dev/null || echo "${REPRODUCIBLE_TIMESTAMP_ROOTFS}"`
fi
ts=`LC_ALL=C date -d @$SOURCE_DATE_EPOCH`
export KBUILD_BUILD_TIMESTAMP="$ts"
export KCONFIG_NOTIMESTAMP=1
bbnote "KBUILD_BUILD_TIMESTAMP: $ts"
else
ts=`LC_ALL=C date`
export KBUILD_BUILD_TIMESTAMP="$ts"
bbnote "KBUILD_BUILD_TIMESTAMP: $ts"
fi
if (grep -q -i -e '^CONFIG_MODULES=y$' ${B}/.config); then
oe_runmake -C ${B} ${PARALLEL_MAKE} modules ${KERNEL_EXTRA_ARGS}
# Module.symvers gets updated during the
# building of the kernel modules. We need to
# update this in the shared workdir since some
# external kernel modules has a dependency on
# other kernel modules and will look at this
# file to do symbol lookups
cp ${B}/Module.symvers ${STAGING_KERNEL_BUILDDIR}/
# 5.10+ kernels have module.lds that we need to copy for external module builds
if [ -e "${B}/scripts/module.lds" ]; then
install -Dm 0644 ${B}/scripts/module.lds ${STAGING_KERNEL_BUILDDIR}/scripts/module.lds
fi
else
bbnote "no modules to compile"
fi
}
addtask compile_kernelmodules after do_compile before do_strip
kernel_do_install() {
#
# First install the modules
#
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
if (grep -q -i -e '^CONFIG_MODULES=y$' .config); then
oe_runmake DEPMOD=echo MODLIB=${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION} INSTALL_FW_PATH=${D}${nonarch_base_libdir}/firmware modules_install
rm -f "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build"
rm -f "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/source"
# Remove empty module directories to prevent QA issues
[ -d "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/kernel" ] && find "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/kernel" -type d -empty -delete
else
bbnote "no modules to install"
fi
#
# Install various kernel output (zImage, map file, config, module support files)
#
install -d ${D}/${KERNEL_IMAGEDEST}
#
# When including an initramfs bundle inside a FIT image, the fitImage is created after the install task
# by do_assemble_fitimage_initramfs.
# This happens after the generation of the initramfs bundle (done by do_bundle_initramfs).
# So, at the level of the install task we should not try to install the fitImage. fitImage is still not
# generated yet.
# After the generation of the fitImage, the deploy task copies the fitImage from the build directory to
# the deploy folder.
#
for imageType in ${KERNEL_IMAGETYPES} ; do
if [ $imageType != "fitImage" ] || [ "${INITRAMFS_IMAGE_BUNDLE}" != "1" ] ; then
install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType ${D}/${KERNEL_IMAGEDEST}/$imageType-${KERNEL_VERSION}
fi
done
install -m 0644 System.map ${D}/${KERNEL_IMAGEDEST}/System.map-${KERNEL_VERSION}
install -m 0644 .config ${D}/${KERNEL_IMAGEDEST}/config-${KERNEL_VERSION}
install -m 0644 vmlinux ${D}/${KERNEL_IMAGEDEST}/vmlinux-${KERNEL_VERSION}
! [ -e Module.symvers ] || install -m 0644 Module.symvers ${D}/${KERNEL_IMAGEDEST}/Module.symvers-${KERNEL_VERSION}
}
# Must be ran no earlier than after do_kernel_checkout or else Makefile won't be in ${S}/Makefile
do_kernel_version_sanity_check() {
if [ "x${KERNEL_VERSION_SANITY_SKIP}" = "x1" ]; then
exit 0
fi
# The Makefile determines the kernel version shown at runtime
# Don't use KERNEL_VERSION because the headers it grabs the version from aren't generated until do_compile
VERSION=$(grep "^VERSION =" ${S}/Makefile | sed s/.*=\ *//)
PATCHLEVEL=$(grep "^PATCHLEVEL =" ${S}/Makefile | sed s/.*=\ *//)
SUBLEVEL=$(grep "^SUBLEVEL =" ${S}/Makefile | sed s/.*=\ *//)
EXTRAVERSION=$(grep "^EXTRAVERSION =" ${S}/Makefile | sed s/.*=\ *//)
# Build a string for regex and a plain version string
reg="^${VERSION}\.${PATCHLEVEL}"
vers="${VERSION}.${PATCHLEVEL}"
if [ -n "${SUBLEVEL}" ]; then
# Ignoring a SUBLEVEL of zero is fine
if [ "${SUBLEVEL}" = "0" ]; then
reg="${reg}(\.${SUBLEVEL})?"
else
reg="${reg}\.${SUBLEVEL}"
vers="${vers}.${SUBLEVEL}"
fi
fi
vers="${vers}${EXTRAVERSION}"
reg="${reg}${EXTRAVERSION}"
if [ -z `echo ${PV} | grep -E "${reg}"` ]; then
bbfatal "Package Version (${PV}) does not match of kernel being built (${vers}). Please update the PV variable to match the kernel source or set KERNEL_VERSION_SANITY_SKIP=\"1\" in your recipe."
fi
exit 0
}
addtask shared_workdir after do_compile before do_compile_kernelmodules
addtask shared_workdir_setscene
do_shared_workdir_setscene () {
exit 1
}
emit_depmod_pkgdata() {
# Stash data for depmod
install -d ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/
echo "${KERNEL_VERSION}" > ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/${KERNEL_PACKAGE_NAME}-abiversion
cp ${B}/System.map ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/System.map-${KERNEL_VERSION}
}
PACKAGEFUNCS += "emit_depmod_pkgdata"
do_shared_workdir[cleandirs] += " ${STAGING_KERNEL_BUILDDIR}"
do_shared_workdir () {
cd ${B}
kerneldir=${STAGING_KERNEL_BUILDDIR}
install -d $kerneldir
#
# Store the kernel version in sysroots for module-base.bbclass
#
echo "${KERNEL_VERSION}" > $kerneldir/${KERNEL_PACKAGE_NAME}-abiversion
echo "${KERNEL_LOCALVERSION}" > $kerneldir/${KERNEL_PACKAGE_NAME}-localversion
# Copy files required for module builds
cp System.map $kerneldir/System.map-${KERNEL_VERSION}
! [ -e Module.symvers ] || cp Module.symvers $kerneldir/
cp .config $kerneldir/
mkdir -p $kerneldir/include/config
cp include/config/kernel.release $kerneldir/include/config/kernel.release
if [ -e certs/signing_key.x509 ]; then
# The signing_key.* files are stored in the certs/ dir in
# newer Linux kernels
mkdir -p $kerneldir/certs
cp certs/signing_key.* $kerneldir/certs/
elif [ -e signing_key.priv ]; then
cp signing_key.* $kerneldir/
fi
# We can also copy over all the generated files and avoid special cases
# like version.h, but we've opted to keep this small until file creep starts
# to happen
if [ -e include/linux/version.h ]; then
mkdir -p $kerneldir/include/linux
cp include/linux/version.h $kerneldir/include/linux/version.h
fi
# As of Linux kernel version 3.0.1, the clean target removes
# arch/powerpc/lib/crtsavres.o which is present in
# KBUILD_LDFLAGS_MODULE, making it required to build external modules.
if [ ${ARCH} = "powerpc" ]; then
if [ -e arch/powerpc/lib/crtsavres.o ]; then
mkdir -p $kerneldir/arch/powerpc/lib/
cp arch/powerpc/lib/crtsavres.o $kerneldir/arch/powerpc/lib/crtsavres.o
fi
fi
if [ -d include/generated ]; then
mkdir -p $kerneldir/include/generated/
cp -fR include/generated/* $kerneldir/include/generated/
fi
if [ -d arch/${ARCH}/include/generated ]; then
mkdir -p $kerneldir/arch/${ARCH}/include/generated/
cp -fR arch/${ARCH}/include/generated/* $kerneldir/arch/${ARCH}/include/generated/
fi
if (grep -q -i -e '^CONFIG_UNWINDER_ORC=y$' $kerneldir/.config); then
# With CONFIG_UNWINDER_ORC (the default in 4.14), objtool is required for
# out-of-tree modules to be able to generate object files.
if [ -x tools/objtool/objtool ]; then
mkdir -p ${kerneldir}/tools/objtool
cp tools/objtool/objtool ${kerneldir}/tools/objtool/
fi
fi
# When building with CONFIG_MODVERSIONS=y and CONFIG_RANDSTRUCT=y we need
# to copy the build assets generated for the randstruct seed to
# STAGING_KERNEL_BUILDDIR, otherwise the out-of-tree modules build will
# generate those assets which will result in a different
# RANDSTRUCT_HASHED_SEED
if [ -d scripts/basic ]; then
mkdir -p ${kerneldir}/scripts
cp -r scripts/basic ${kerneldir}/scripts
fi
if [ -d scripts/gcc-plugins ]; then
mkdir -p ${kerneldir}/scripts
cp -r scripts/gcc-plugins ${kerneldir}/scripts
fi
}
# We don't need to stage anything, not the modules/firmware since those would clash with linux-firmware
SYSROOT_DIRS = ""
KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} O=${B} olddefconfig || oe_runmake -C ${S} O=${B} oldnoconfig"
python check_oldest_kernel() {
oldest_kernel = d.getVar('OLDEST_KERNEL')
kernel_version = d.getVar('KERNEL_VERSION')
tclibc = d.getVar('TCLIBC')
if tclibc == 'glibc':
kernel_version = kernel_version.split('-', 1)[0]
if oldest_kernel and kernel_version:
if bb.utils.vercmp_string(kernel_version, oldest_kernel) < 0:
bb.warn('%s: OLDEST_KERNEL is "%s" but the version of the kernel you are building is "%s" - therefore %s as built may not be compatible with this kernel. Either set OLDEST_KERNEL to an older version, or build a newer kernel.' % (d.getVar('PN'), oldest_kernel, kernel_version, tclibc))
}
check_oldest_kernel[vardepsexclude] += "OLDEST_KERNEL KERNEL_VERSION"
do_compile[postfuncs] += "check_oldest_kernel"
KERNEL_LOCALVERSION ??= ""
# 6.3+ requires the variable LOCALVERSION to be set to not get a "+" in
# the local version. Having it empty means nothing will be added, and any
# value will be appended to the local kernel version. This replaces the
# use of .scmversion file for setting a localversion without using
# the CONFIG_LOCALVERSION option.
#
# Note: This class saves the value of localversion to a file
# so other recipes like make-mod-scripts can restore it via the
# helper function get_kernellocalversion_file
export LOCALVERSION="${KERNEL_LOCALVERSION}"
kernel_do_configure() {
# fixes extra + in /lib/modules/2.6.37+
# $ scripts/setlocalversion . => +
# $ make kernelversion => 2.6.37
# $ make kernelrelease => 2.6.37+
# See kernel-arch.bbclass for post v6.3 removal of the extra
# + in localversion. .scmversion is no longer used, and the
# variable LOCALVERSION must be used
if [ ! -e ${B}/.scmversion -a ! -e ${S}/.scmversion ]; then
echo ${KERNEL_LOCALVERSION} > ${B}/.scmversion
echo ${KERNEL_LOCALVERSION} > ${S}/.scmversion
fi
if [ "${S}" != "${B}" ] && [ -f "${S}/.config" ] && [ ! -f "${B}/.config" ]; then
mv "${S}/.config" "${B}/.config"
fi
# Copy defconfig to .config if .config does not exist. This allows
# recipes to manage the .config themselves in do_configure:prepend().
if [ -f "${WORKDIR}/defconfig" ] && [ ! -f "${B}/.config" ]; then
cp "${WORKDIR}/defconfig" "${B}/.config"
fi
${KERNEL_CONFIG_COMMAND}
}
do_savedefconfig() {
bbplain "Saving defconfig to:\n${B}/defconfig"
oe_runmake -C ${B} savedefconfig
}
do_savedefconfig[nostamp] = "1"
addtask savedefconfig after do_configure
inherit cml1 pkgconfig
# Need LD, HOSTLDFLAGS and more for config operations
KCONFIG_CONFIG_COMMAND:append = " ${EXTRA_OEMAKE}"
EXPORT_FUNCTIONS do_compile do_transform_kernel do_transform_bundled_initramfs do_install do_configure
# kernel-base becomes kernel-${KERNEL_VERSION}
# kernel-image becomes kernel-image-${KERNEL_VERSION}
PACKAGES = "${KERNEL_PACKAGE_NAME} ${KERNEL_PACKAGE_NAME}-base ${KERNEL_PACKAGE_NAME}-vmlinux ${KERNEL_PACKAGE_NAME}-image ${KERNEL_PACKAGE_NAME}-dev ${KERNEL_PACKAGE_NAME}-modules ${KERNEL_PACKAGE_NAME}-dbg"
FILES:${PN} = ""
FILES:${KERNEL_PACKAGE_NAME}-base = "${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.order ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin.modinfo"
FILES:${KERNEL_PACKAGE_NAME}-image = ""
FILES:${KERNEL_PACKAGE_NAME}-dev = "/${KERNEL_IMAGEDEST}/System.map* /${KERNEL_IMAGEDEST}/Module.symvers* /${KERNEL_IMAGEDEST}/config* ${KERNEL_SRC_PATH} ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build"
FILES:${KERNEL_PACKAGE_NAME}-vmlinux = "/${KERNEL_IMAGEDEST}/vmlinux-${KERNEL_VERSION_NAME}"
FILES:${KERNEL_PACKAGE_NAME}-modules = ""
FILES:${KERNEL_PACKAGE_NAME}-dbg = "/usr/lib/debug /usr/src/debug"
RDEPENDS:${KERNEL_PACKAGE_NAME} = "${KERNEL_PACKAGE_NAME}-base (= ${EXTENDPKGV})"
# Allow machines to override this dependency if kernel image files are
# not wanted in images as standard
RRECOMMENDS:${KERNEL_PACKAGE_NAME}-base ?= "${KERNEL_PACKAGE_NAME}-image (= ${EXTENDPKGV})"
PKG:${KERNEL_PACKAGE_NAME}-image = "${KERNEL_PACKAGE_NAME}-image-${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}"
RDEPENDS:${KERNEL_PACKAGE_NAME}-image += "${@oe.utils.conditional('KERNEL_IMAGETYPE', 'vmlinux', '${KERNEL_PACKAGE_NAME}-vmlinux (= ${EXTENDPKGV})', '', d)}"
PKG:${KERNEL_PACKAGE_NAME}-base = "${KERNEL_PACKAGE_NAME}-${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}"
RPROVIDES:${KERNEL_PACKAGE_NAME}-base += "${KERNEL_PACKAGE_NAME}-${KERNEL_VERSION}"
ALLOW_EMPTY:${KERNEL_PACKAGE_NAME} = "1"
ALLOW_EMPTY:${KERNEL_PACKAGE_NAME}-base = "1"
ALLOW_EMPTY:${KERNEL_PACKAGE_NAME}-image = "1"
ALLOW_EMPTY:${KERNEL_PACKAGE_NAME}-modules = "1"
DESCRIPTION:${KERNEL_PACKAGE_NAME}-modules = "Kernel modules meta package"
pkg_postinst:${KERNEL_PACKAGE_NAME}-base () {
if [ ! -e "$D/lib/modules/${KERNEL_VERSION}" ]; then
mkdir -p $D/lib/modules/${KERNEL_VERSION}
fi
if [ -n "$D" ]; then
depmodwrapper -a -b $D ${KERNEL_VERSION} ${KERNEL_PACKAGE_NAME}
else
depmod -a ${KERNEL_VERSION}
fi
}
PACKAGESPLITFUNCS =+ "split_kernel_packages"
python split_kernel_packages () {
do_split_packages(d, root='${nonarch_base_libdir}/firmware', file_regex=r'^(.*)\.(bin|fw|cis|csp|dsp)$', output_pattern='${KERNEL_PACKAGE_NAME}-firmware-%s', description='Firmware for %s', recursive=True, extra_depends='')
}
# Many scripts want to look in arch/$arch/boot for the bootable
# image. This poses a problem for vmlinux and vmlinuz based
# booting. This task arranges to have vmlinux and vmlinuz appear
# in the normalized directory location.
do_kernel_link_images() {
if [ ! -d "${B}/arch/${ARCH}/boot" ]; then
mkdir ${B}/arch/${ARCH}/boot
fi
cd ${B}/arch/${ARCH}/boot
ln -sf ../../../vmlinux
if [ -f ../../../vmlinuz ]; then
ln -sf ../../../vmlinuz
fi
if [ -f ../../../vmlinuz.bin ]; then
ln -sf ../../../vmlinuz.bin
fi
if [ -f ../../../vmlinux.64 ]; then
ln -sf ../../../vmlinux.64
fi
}
addtask kernel_link_images after do_compile before do_strip
python do_strip() {
import shutil
strip = d.getVar('KERNEL_STRIP')
extra_sections = d.getVar('KERNEL_IMAGE_STRIP_EXTRA_SECTIONS')
kernel_image = d.getVar('B') + "/" + d.getVar('KERNEL_OUTPUT_DIR') + "/vmlinux"
if (extra_sections and kernel_image.find(d.getVar('KERNEL_IMAGEDEST') + '/vmlinux') != -1):
kernel_image_stripped = kernel_image + ".stripped"
shutil.copy2(kernel_image, kernel_image_stripped)
oe.package.runstrip((kernel_image_stripped, 8, strip, extra_sections))
bb.debug(1, "KERNEL_IMAGE_STRIP_EXTRA_SECTIONS is set, stripping sections: " + \
extra_sections)
}
do_strip[dirs] = "${B}"
addtask strip before do_sizecheck after do_kernel_link_images
# Support checking the kernel size since some kernels need to reside in partitions
# with a fixed length or there is a limit in transferring the kernel to memory.
# If more than one image type is enabled, warn on any that don't fit but only fail
# if none fit.
do_sizecheck() {
if [ ! -z "${KERNEL_IMAGE_MAXSIZE}" ]; then
invalid=`echo ${KERNEL_IMAGE_MAXSIZE} | sed 's/[0-9]//g'`
if [ -n "$invalid" ]; then
die "Invalid KERNEL_IMAGE_MAXSIZE: ${KERNEL_IMAGE_MAXSIZE}, should be an integer (The unit is Kbytes)"
fi
at_least_one_fits=
for imageType in ${KERNEL_IMAGETYPES} ; do
size=`du -ks ${B}/${KERNEL_OUTPUT_DIR}/$imageType | awk '{print $1}'`
if [ $size -gt ${KERNEL_IMAGE_MAXSIZE} ]; then
bbwarn "This kernel $imageType (size=$size(K) > ${KERNEL_IMAGE_MAXSIZE}(K)) is too big for your device."
else
at_least_one_fits=y
fi
done
if [ -z "$at_least_one_fits" ]; then
die "All kernel images are too big for your device. Please reduce the size of the kernel by making more of it modular."
fi
fi
}
do_sizecheck[dirs] = "${B}"
addtask sizecheck before do_install after do_strip
inherit kernel-artifact-names
kernel_do_deploy() {
deployDir="${DEPLOYDIR}"
if [ -n "${KERNEL_DEPLOYSUBDIR}" ]; then
deployDir="${DEPLOYDIR}/${KERNEL_DEPLOYSUBDIR}"
mkdir "$deployDir"
fi
for imageType in ${KERNEL_IMAGETYPES} ; do
baseName=$imageType-${KERNEL_IMAGE_NAME}
if [ -s ${KERNEL_OUTPUT_DIR}/$imageType.stripped ] ; then
install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType.stripped $deployDir/$baseName${KERNEL_IMAGE_BIN_EXT}
else
install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType $deployDir/$baseName${KERNEL_IMAGE_BIN_EXT}
fi
if [ -n "${KERNEL_IMAGE_LINK_NAME}" ] ; then
ln -sf $baseName${KERNEL_IMAGE_BIN_EXT} $deployDir/$imageType-${KERNEL_IMAGE_LINK_NAME}${KERNEL_IMAGE_BIN_EXT}
fi
if [ "${KERNEL_IMAGETYPE_SYMLINK}" = "1" ] ; then
ln -sf $baseName${KERNEL_IMAGE_BIN_EXT} $deployDir/$imageType
fi
done
if [ ${MODULE_TARBALL_DEPLOY} = "1" ] && (grep -q -i -e '^CONFIG_MODULES=y$' .config); then
mkdir -p ${D}${root_prefix}/lib
if [ -n "${SOURCE_DATE_EPOCH}" ]; then
TAR_ARGS="--sort=name --clamp-mtime --mtime=@${SOURCE_DATE_EPOCH}"
else
TAR_ARGS=""
fi
TAR_ARGS="$TAR_ARGS --owner=0 --group=0"
tar $TAR_ARGS -cv -C ${D}${root_prefix} lib | gzip -9n > $deployDir/modules-${MODULE_TARBALL_NAME}.tgz
if [ -n "${MODULE_TARBALL_LINK_NAME}" ] ; then
ln -sf modules-${MODULE_TARBALL_NAME}.tgz $deployDir/modules-${MODULE_TARBALL_LINK_NAME}.tgz
fi
fi
if [ ! -z "${INITRAMFS_IMAGE}" -a x"${INITRAMFS_IMAGE_BUNDLE}" = x1 ]; then
for imageType in ${KERNEL_IMAGETYPES} ; do
if [ "$imageType" = "fitImage" ] ; then
continue
fi
initramfsBaseName=$imageType-${INITRAMFS_NAME}
install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType.initramfs $deployDir/$initramfsBaseName${KERNEL_IMAGE_BIN_EXT}
if [ -n "${INITRAMFS_LINK_NAME}" ] ; then
ln -sf $initramfsBaseName${KERNEL_IMAGE_BIN_EXT} $deployDir/$imageType-${INITRAMFS_LINK_NAME}${KERNEL_IMAGE_BIN_EXT}
fi
done
fi
}
# We deploy to filenames that include PKGV and PKGR, read the saved data to
# ensure we get the right values for both
do_deploy[prefuncs] += "read_subpackage_metadata"
addtask deploy after do_populate_sysroot do_packagedata
EXPORT_FUNCTIONS do_deploy
python __anonymous() {
inherits = (d.getVar("INHERIT") or "")
if "create-spdx" in inherits:
bb.build.addtask('do_create_kernel_config_spdx', 'do_populate_lic do_deploy', 'do_create_spdx', d)
}
python do_create_kernel_config_spdx() {
if d.getVar("SPDX_INCLUDE_KERNEL_CONFIG", True) == "1":
import oe.spdx30
import oe.spdx30_tasks
from pathlib import Path
from datetime import datetime, timezone
pkg_arch = d.getVar("SSTATE_PKGARCH")
deploydir = Path(d.getVar("SPDXDEPLOY"))
pn = d.getVar("PN")
config_path = d.expand("${B}/.config")
kernel_params = []
if not os.path.exists(config_path):
bb.warn(f"SPDX: Kernel config file not found at: {config_path}")
return
try:
with open(config_path, 'r') as f:
for line in f:
line = line.strip()
if not line or line.startswith("#"):
continue
if "=" in line:
key, value = line.split("=", 1)
kernel_params.append(oe.spdx30.DictionaryEntry(
key=key,
value=value.strip('"')
))
bb.note(f"Parsed {len(kernel_params)} kernel config entries from {config_path}")
except Exception as e:
bb.error(f"Failed to parse kernel config file: {e}")
build, build_objset = oe.sbom30.find_root_obj_in_jsonld(
d, "recipes", f"recipe-{pn}", oe.spdx30.build_Build
)
kernel_build = build_objset.add_root(
oe.spdx30.build_Build(
_id=build_objset.new_spdxid("kernel-config"),
creationInfo=build_objset.doc.creationInfo,
build_buildType="https://openembedded.org/kernel-configuration",
build_parameter=kernel_params
)
)
oe.spdx30_tasks.set_timestamp_now(d, kernel_build, "build_buildStartTime")
build_objset.new_relationship(
[build],
oe.spdx30.RelationshipType.ancestorOf,
[kernel_build]
)
oe.sbom30.write_jsonld_doc(d, build_objset, deploydir / pkg_arch / "recipes" / f"recipe-{pn}.spdx.json")
}
do_create_kernel_config_spdx[depends] = "virtual/kernel:do_configure"
# Add using Device Tree support
inherit kernel-devicetree