.. SPDX-License-Identifier: CC-BY-SA-2.0-UK Release 3.3 (hardknott) ======================= This section provides migration information for moving to the Yocto Project 3.3 Release (codename "hardknott") from the prior release. .. _migration-3.3-minimum-system-requirements: Minimum system requirements --------------------------- You will now need at least Python 3.6 installed on your build host. Most recent distributions provide this, but should you be building on a distribution that does not have it, you can use the :term:`buildtools` tarball (easily installable using ``scripts/install-buildtools``) --- see :ref:`ref-manual/system-requirements:required git, tar, python, make and gcc versions` for details. .. _migration-3.3-removed-recipes: Removed recipes --------------- The following recipes have been removed: - ``go-dep``: obsolete with the advent of go modules - ``gst-validate``: replaced by ``gst-devtools`` - ``linux-yocto``: removed 5.8 version recipes (5.4 / 5.10 still provided) - ``vulkan-demos``: replaced by ``vulkan-samples`` .. _migration-3.3-common-license-only-versions: Single version common license file naming ----------------------------------------- Some license files in ``meta/files/common-licenses`` have been renamed to match current SPDX naming conventions: - AGPL-3.0 -> AGPL-3.0-only - GPL-1.0 -> GPL-1.0-only - GPL-2.0 -> GPL-2.0-only - GPL-3.0 -> GPL-3.0-only - LGPL-2.0 -> LGPL-2.0-only - LGPL-2.1 -> LGPL-2.1-only - LGPL-3.0 -> LGPL-3.0-only Additionally, corresponding "-or-later" suffixed files have been added e.g. ``GPL-2.0-or-later``. It is not required that you change :term:`LICENSE` values as there are mappings from the original names in place; however, in rare cases where you have a recipe which sets :term:`LIC_FILES_CHKSUM` to point to file(s) in ``meta/files/common-licenses`` (which in any case is not recommended) you will need to update those. .. _migration-3.3-python3targetconfig: New ``python3targetconfig`` class --------------------------------- A new :ref:`ref-classes-python3targetconfig` class has been created for situations where you would previously have inherited the :ref:`ref-classes-python3native` class but need access to target configuration data (such as correct installation directories). Recipes where this situation applies should be changed to inherit :ref:`ref-classes-python3targetconfig` instead of :ref:`ref-classes-python3native`. This also adds a dependency on target ``python3``, so it should only be used where appropriate in order to avoid unnecessarily lengthening builds. Some example recipes where this change has been made: ``gpgme``, ``libcap-ng``, ``python3-pycairo``. .. _migration-3.3-distutils-path: ``setup.py`` path for Python modules ------------------------------------ In a Python module, sometimes ``setup.py`` can be buried deep in the source tree. Previously this was handled in recipes by setting :term:`S` to point to the subdirectory within the source where ``setup.py`` is located. However with the recent :ref:`pseudo ` changes, some Python modules make changes to files beneath ``${S}``, for example:: S = "${WORKDIR}/git/python/pythonmodule" then in ``setup.py`` it works with source code in a relative fashion, such as ``../../src``. This causes pseudo to fail as it isn't able to track the paths properly. This release introduces a new ``DISTUTILS_SETUP_PATH`` variable so that recipes can specify it explicitly, for example:: S = "${WORKDIR}/git" DISTUTILS_SETUP_PATH = "${S}/python/pythonmodule" Recipes that inherit from ``distutils3`` (or :ref:`ref-classes-setuptools3` which itself inherits ``distutils3``) that also set :term:`S` to point to a Python module within a subdirectory in the aforementioned manner should be changed to set ``DISTUTILS_SETUP_PATH`` instead. .. _migration-3.3-bitbake: BitBake changes --------------- - BitBake is now configured to use a default ``umask`` of ``022`` for all tasks (specified via a new :term:`BB_DEFAULT_UMASK` variable). If needed, ``umask`` can still be set on a per-task basis via the ``umask`` varflag on the task function, but that is unlikely to be necessary in most cases. - If a version specified in :term:`PREFERRED_VERSION` is not available this will now trigger a warning instead of just a note, making such issues more visible. .. _migration-3.3-packaging: Packaging changes ----------------- The following packaging changes have been made; in all cases the main package still depends upon the split out packages so you should not need to do anything unless you want to take advantage of the improved granularity: - ``dbus``: ``-common`` and ``-tools`` split out - ``iproute2``: split ``ip`` binary to its own package - ``net-tools``: split ``mii-tool`` into its own package - ``procps``: split ``ps`` and ``sysctl`` into their own packages - ``rpm``: split build and extra functionality into separate packages - ``sudo``: split ``sudo`` binary into ``sudo-sudo`` and libs into ``sudo-lib`` - ``systemtap``: examples, Python scripts and runtime material split out - ``util-linux``: ``libuuid`` has been split out to its own ``util-linux-libuuid`` recipe (and corresponding packages) to avoid circular dependencies if ``libgcrypt`` support is enabled in ``util-linux``. (``util-linux`` depends upon ``util-linux-libuuid``.) .. _migration-3.3-misc: Miscellaneous changes --------------------- - The default poky :term:`DISTRO_VERSION` value now uses the core metadata's git hash (i.e. :term:`METADATA_REVISION`) rather than the date (i.e. :term:`DATE`) to reduce one small source of non-reproducibility. You can of course specify your own :term:`DISTRO_VERSION` value as desired (particularly if you create your own custom distro configuration). - ``adwaita-icon-theme`` version 3.34.3 has been added back, and is selected as the default via :term:`PREFERRED_VERSION` in ``meta/conf/distro/include/default-versions.inc`` due to newer versions not working well with ``librsvg`` 2.40. ``librsvg`` is not practically upgradeable at the moment as it has been ported to Rust, and Rust is not (yet) in OE-Core, but this will change in a future release. - ``ffmpeg`` is now configured to disable GPL-licensed portions by default to make it harder to accidentally violate the GPL. To explicitly enable GPL licensed portions, add ``gpl`` to :term:`PACKAGECONFIG` for ``ffmpeg`` using a bbappend (or use ``PACKAGECONFIG_append_pn-ffmpeg = " gpl"`` in your configuration.) - ``connman`` is now set to conflict with ``systemd-networkd`` as they overlap functionally and may interfere with each other at runtime. - Canonical SPDX license names are now used in image license manifests in order to avoid aliases of the same license from showing up together (e.g. ``GPLv2`` and ``GPL-2.0``)