2 files changed, 122 insertions, 0 deletions

diff --git a/documentation/ref-manual/terms.rst b/documentation/ref-manual/terms.rst
index 1e3f718a8f..7e5295a646 100644
--- a/documentation/ref-manual/terms.rst
+++ b/documentation/ref-manual/terms.rst
@@ -323,6 +323,23 @@ universal, the list includes them just in case:
       :term:`build host<Build Host>` and other components, that can
       work on specific hardware.
 
+   :term:`SBOM`
+      This term means *Software Bill of Materials*. When you distribute
+      software, it offers a description of all the components you used,
+      their corresponding licenses, their dependencies, the changes that were
+      applied and the known vulnerabilities that were fixed.
+
+      This can be used by the recipients of the software to assess
+      their exposure to license compliance and security vulnerability issues.
+
+      See the :wikipedia:`Software Supply Chain <Software_supply_chain>`
+      article on Wikipedia for more details.
+
+      The OpenEmbedded Build System can generate such documentation for your
+      project, in :term:`SPDX` format, based on all the metadata it used to
+      build the software images. See the ":ref:`dev-manual/common-tasks:creating
+      a software bill of materials`" section of the Development Tasks manual.
+
    :term:`Source Directory`
      This term refers to the directory structure
      created as a result of creating a local copy of the ``poky`` Git
@@ -383,6 +400,17 @@ universal, the list includes them just in case:
      ":ref:`overview-manual/development-environment:repositories, tags, and branches`"
      section in the Yocto Project Overview and Concepts Manual.
 
+   :term:`SPDX`
+      This term means *Software Package Data Exchange*, and is used as a open
+      standard for providing a *Software Bill of Materials* (:term:`SBOM`).
+      This standard is developed through a `Linux Foundation project
+      <https://spdx.dev/>`__ and is used by the OpenEmbedded Build System to
+      provide an :term:`SBOM` associated to each a software image.
+
+      For details, see Wikipedia's :wikipedia:`SPDX page <Software_Package_Data_Exchange>`
+      and the ":ref:`dev-manual/common-tasks:creating a software bill of materials`"
+      section of the Development Tasks manual.
+
    :term:`Sysroot`
       When cross-compiling, the target file system may be differently laid
       out and contain different things compared to the host system. The concept
diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index 71e8c272a7..f17960e0e9 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -1508,6 +1508,18 @@ system and gives an overview of their function and contents.
 
          CVE_PRODUCT = "vendor:package"
 
+   :term:`CVE_VERSION`
+      In a recipe, defines the version used to match the recipe version
+      against the version in the `NIST CVE database <https://nvd.nist.gov/>`__
+      when usign :ref:`cve-check <ref-classes-cve-check>`.
+
+      The default is ${:term:`PV`} but if recipes use custom version numbers
+      which do not map to upstream software component release versions and the versions
+      used in the CVE database, then this variable can be used to set the
+      version number for :ref:`cve-check <ref-classes-cve-check>`. Example::
+
+          CVE_VERSION = "2.39"
+
    :term:`CVSDIR`
       The directory in which files checked out under the CVS system are
       stored.
@@ -7278,6 +7290,88 @@ system and gives an overview of their function and contents.
 
          You can specify only a single URL in :term:`SOURCE_MIRROR_URL`.
 
+   :term:`SPDX_ARCHIVE_PACKAGED`
+      This option allows to add to :term:`SPDX` output compressed archives
+      of the files in the generated target packages.
+
+      Such archives are available in
+      ``tmp/deploy/spdx/MACHINE/packages/packagename.tar.zst``
+      under the :term:`Build Directory`.
+
+      Enable this option as follows::
+
+         SPDX_ARCHIVE_PACKAGED = "1"
+
+      According to our tests on release 4.1 "langdale", building
+      ``core-image-minimal`` for the ``qemux86-64`` machine, enabling this
+      option multiplied the size of the ``tmp/deploy/spdx`` directory by a
+      factor of 13 (+1.6 GiB for this image), compared to just using the
+      :ref:`create-spdx <ref-classes-create-spdx>` class with no option.
+
+      Note that this option doesn't increase the size of :term:`SPDX`
+      files in ``tmp/deploy/images/MACHINE``.
+
+   :term:`SPDX_ARCHIVE_SOURCES`
+      This option allows to add to :term:`SPDX` output compressed archives
+      of the sources for packages installed on the target. It currently
+      only works when :term:`SPDX_INCLUDE_SOURCES` is set.
+
+      This is one way of fulfilling "source code access" license
+      requirements.
+
+      Such source archives are available in
+      ``tmp/deploy/spdx/MACHINE/recipes/recipe-packagename.tar.zst``
+      under the :term:`Build Directory`.
+
+      Enable this option as follows::
+
+         SPDX_INCLUDE_SOURCES = "1"
+         SPDX_ARCHIVE_SOURCES = "1"
+
+      According to our tests on release 4.1 "langdale", building
+      ``core-image-minimal`` for the ``qemux86-64`` machine, enabling
+      these options multiplied the size of the ``tmp/deploy/spdx``
+      directory by a factor of 11 (+1.4 GiB for this image),
+      compared to just using the :ref:`create-spdx <ref-classes-create-spdx>`
+      class with no option.
+
+      Note that using this option only marginally increases the size
+      of the :term:`SPDX` output in ``tmp/deploy/images/MACHINE/``
+      (+ 0.07\% with the tested image), compared to just enabling
+      :term:`SPDX_INCLUDE_SOURCES`.
+
+   :term:`SPDX_INCLUDE_SOURCES`
+      This option allows to add a description of the source files used to build
+      the host tools and the target packages, to the ``spdx.json`` files in
+      ``tmp/deploy/spdx/MACHINE/recipes/`` under the :term:`Build Directory`.
+      As a consequence, the ``spdx.json`` files under the ``by-namespace`` and
+      ``packages`` subdirectories in ``tmp/deploy/spdx/MACHINE`` are also
+      modified to include references to such source file descriptions.
+
+      Enable this option as follows::
+
+         SPDX_INCLUDE_SOURCES = "1"
+
+      According to our tests on release 4.1 "langdale", building
+      ``core-image-minimal`` for the ``qemux86-64`` machine, enabling
+      this option multiplied the total size of the ``tmp/deploy/spdx``
+      directory by a factor of 3  (+291 MiB for this image),
+      and the size of the ``IMAGE-MACHINE.spdx.tar.zst`` in
+      ``tmp/deploy/images/MACHINE`` by a factor of 130 (+15 MiB for this
+      image), compared to just using the
+      :ref:`create-spdx <ref-classes-create-spdx>` class with no option.
+
+   :term:`SPDX_PRETTY`
+      This option makes the SPDX output more human-readable, using
+      identation and newlines, instead of the default output in a
+      single line::
+
+         SPDX_PRETTY = "1"
+
+      The generated SPDX files are approximately 20% bigger, but
+      this option is recommended if you want to inspect the SPDX
+      output files with a text editor.
+
    :term:`SPDXLICENSEMAP`
       Maps commonly used license names to their SPDX counterparts found in
       ``meta/files/common-licenses/``. For the default :term:`SPDXLICENSEMAP`