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Covers the changes introduced by commit https://git.yoctoproject.org/poky/commit/?id=efa5f65c2214239ed7aaf7bd8998683e755c5660 (From yocto-docs rev: 71acf03e02d1e21a4dbe081e75d1e4383ac2f3ac) Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com> Reviewed-by: Antonin Godard <antonin.godard@bootlin.com> Signed-off-by: Antonin Godard <antonin.godard@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
139 lines
4.9 KiB
ReStructuredText
139 lines
4.9 KiB
ReStructuredText
.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
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.. |yocto-codename| replace:: walnascar
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.. |yocto-ver| replace:: 5.2
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.. Note: anchors id below cannot contain substitutions so replace them with the
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value of |yocto-ver| above.
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Release |yocto-ver| (|yocto-codename|)
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======================================
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Migration notes for |yocto-ver| (|yocto-codename|)
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--------------------------------------------------
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This section provides migration information for moving to the Yocto
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Project |yocto-ver| Release (codename "|yocto-codename|") from the prior release.
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``debug-tweaks`` removed from :term:`IMAGE_FEATURES`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The ``debug-tweaks`` image feature is now removed because it was too vague about
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what it achieved: an image on which the ``root`` user can login without a
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password.
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To achieve the same result, the features previously added by ``debug-tweaks``
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should be manually added to the :term:`IMAGE_FEATURES` variable. These are:
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- ``allow-empty-password``
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- ``allow-root-login``
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- ``empty-root-password``
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- ``post-install-logging``
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Such a statement would be::
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IMAGE_FEATURES += "allow-empty-password allow-root-login empty-root-password post-install-logging"
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See the list of available image features in the :ref:`ref-features-image`
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section of the Yocto Project Reference Manual.
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Supported kernel versions
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~~~~~~~~~~~~~~~~~~~~~~~~~
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The :term:`OLDEST_KERNEL` setting is XXX in this release, meaning that
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out the box, older kernels are not supported. See :ref:`4.3 migration notes
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<migration-4.3-supported-kernel-versions>` for details.
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Supported distributions
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~~~~~~~~~~~~~~~~~~~~~~~
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Compared to the previous releases, running BitBake is supported on new
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GNU/Linux distributions:
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On the other hand, some earlier distributions are no longer supported:
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See :ref:`all supported distributions <system-requirements-supported-distros>`.
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Go language changes
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~~~~~~~~~~~~~~~~~~~
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Rust language changes
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~~~~~~~~~~~~~~~~~~~~~
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- Recipes inheriting the :ref:`ref-classes-cargo` do not install libraries by
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default anymore. This behavior can be controlled by the
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:term:`CARGO_INSTALL_LIBRARIES` variable.
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systemd changes
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~~~~~~~~~~~~~~~
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- Support for ``split-usr`` and ``unmerged-usr`` are now removed after Systemd
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was updated to version 255. This option allowed installing Systemd in a
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system where directories such as ``/lib``, ``/sbin`` or ``/bin`` are *not*
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merged into ``/usr``.
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As a consequence, the ``systemd`` recipe no longer contains the ``usrmerge``
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:term:`PACKAGECONFIG` option as it is now implied by default.
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- ``systemd.bbclass``: If a ``systemd`` service file had referred to other service
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files by starting them via
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`Also <https://www.freedesktop.org/software/systemd/man/latest/systemd.unit.html#Also=>`__,
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the other service files were automatically added to the :term:`FILES` variable of
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the same package. Example:
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a.service contains::
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[Install]
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Also=b.service
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If ``a.service`` is packaged in package ``A``, ``b.service`` was
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automatically packaged into package ``A`` as well. This happened even if
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``b.service`` was explicitly added to package ``B`` using :term:`FILES` and
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:term:`SYSTEMD_SERVICE` variables.
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This prevented such services from being packaged into different packages.
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Therefore, this automatic behavior has been removed for service files (but
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not for socket files).
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Now all service files must be explicitly added to :term:`FILES`.
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Recipe changes
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~~~~~~~~~~~~~~
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Removed variables
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~~~~~~~~~~~~~~~~~
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The following variables have been removed:
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- ``PACKAGE_SNAP_LIB_SYMLINKS``: related to an unmaintained and obsolete
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"micro" :term:`distro <DISTRO>`.
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- ``SETUPTOOLS_INSTALL_ARGS``: obsolete and unused variable.
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- ``BB_DANGLINGAPPENDS_WARNONLY``: support for only warning the user when a
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``.bbappend`` file doesn't apply to the original recipe has been dropped. See
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the :ref:`dev-manual/layers:Appending Other Layers Metadata With Your Layer`
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section of the Yocto Project Development Tasks Manual for alternatives to
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this variable.
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Removed recipes
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~~~~~~~~~~~~~~~
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The following recipes have been removed in this release:
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- ``liburi-perl``: moved to :oe_git:`meta-perl </meta-openembedded/tree/meta-perl>`.
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- ``python3-isodate``: moved to :oe_git:`meta-python </meta-openembedded/tree/meta-python>`.
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- ``python3-iniparse``: removed as there are no consumers of this recipe in
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:oe_git:`openembedded-core </openembedded-core>` or :oe_git:`meta-openembedded </meta-openembedded>`.
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Removed classes
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~~~~~~~~~~~~~~~
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The following classes have been removed in this release:
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- ``migrate_localcount.bbclass``: obsolete class for which code was already
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removed in 2012.
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Miscellaneous changes
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~~~~~~~~~~~~~~~~~~~~~
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- :term:`ZSTD_COMPRESSION_LEVEL` is now a plain integer number instead of a dash-prefixed
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command-line option (e.g. it should be set to ``3`` rather than ``-3``).
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