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diff --git a/poky/documentation/migration-guides/migration-3.5.rst b/poky/documentation/migration-guides/migration-3.5.rst new file mode 100644 index 0000000000..bd807eb8c7 --- /dev/null +++ b/poky/documentation/migration-guides/migration-3.5.rst @@ -0,0 +1,44 @@ +Release 3.5 (kirkstone) +======================= + +This section provides migration information for moving to the Yocto +Project 3.5 Release (codename "kirkstone") from the prior release. + +Recipe changes +-------------- + +- Because of the uncertainty in future default branch names in git repositories, + it is now required to add a branch name to all URLs described + by ``git://`` and ``gitsm://`` :term:`SRC_URI` entries. For example:: + + SRC_URI = "git://git.denx.de/u-boot.git;branch=master" + + A :oe_git:`convert-srcuri </openembedded-core/tree/scripts/contrib/convert-srcuri.py>` + script to convert your recipes is available in :term:`OpenEmbedded-Core (OE-Core)` + and in :term:`Poky`. + +- Because of `GitHub dropping support for the git: + protocol <https://github.blog/2021-09-01-improving-git-protocol-security-github/>`__, + recipes now need to use ``;protocol=https`` at the end of GitHub + URLs. The same script as above can be used to convert the recipes. + +- The :term:`TOPDIR` variable and the current working directory are no longer modified + when parsing recipes. Any code depending on that behaviour will no longer work. + +- The ``append``, ``prepend`` and ``remove`` operators can now only be combined with + ``=`` and ``:=`` operators. To the exception of the ``append`` plus ``+=`` and + ``prepend`` plus ``=+`` combinations, all combinations could be factored up to the + ``append``, ``prepend`` or ``remove`` in the combination. This brought a lot of + confusion on how the override style syntax operators work and should be used. + Therefore, those combinations can simply be replaced by a single ``append``, + ``prepend`` or ``remove`` operator without any additional change. + For the ``append`` plus ``+=`` (and ``prepend`` plus ``=+``) combinations, + the content should be prefixed (respectively suffixed) by a space to maintain + the same behavior. You can learn more about override style syntax operators + (``append``, ``prepend`` and ``remove``) in the BitBake documentation: + :ref:`bitbake:bitbake-user-manual/bitbake-user-manual-metadata:appending and prepending (override style syntax)` + and :ref:`bitbake:bitbake-user-manual/bitbake-user-manual-metadata:removal (override style syntax)`. + +- :ref:`allarch <ref-classes-allarch>` packagegroups can no longer depend on packages + which use :term:`PKG` renaming such as :ref:`debian.bbclass <ref-classes-debian>`. + |