mirror of
https://git.yoctoproject.org/poky
synced 2026-04-22 15:32:14 +02:00
migration-3.4: add additional migration info
Add migration instructions gathered by combing the commits in this release. (From yocto-docs rev: b864f8570271df4e6cb47d21cb658d13ffd1d8f5) Signed-off-by: Paul Eggleton <paul.eggleton@microsoft.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
committed by
Richard Purdie
Richard Purdie
parent
cc8df6ce5a
commit
f0428cea44
@@ -85,3 +85,179 @@ with other syntax improvements and simplifications for usability. It also means
|
||||
BitBake no longer has to guess and maintain large lookup lists just in case
|
||||
e.g. ``functionname`` in ``my_functionname`` is an override, and thus should improve
|
||||
efficiency.
|
||||
|
||||
|
||||
New host dependencies
|
||||
---------------------
|
||||
|
||||
The ``lz4c``, ``pzstd`` and ``zstd`` commands are now required to be
|
||||
installed on the build host to support LZ4 and Zstandard compression
|
||||
functionality. These are typically provided by ``lz4`` and ``zstd``
|
||||
packages in most Linux distributions. Alternatively they are available
|
||||
as part of ``buildtools-tarball`` if your distribution does not provide
|
||||
them. For more information see
|
||||
:ref:`ref-manual/system-requirements:required packages for the build host`.
|
||||
|
||||
|
||||
Removed recipes
|
||||
---------------
|
||||
|
||||
The following recipes have been removed in this release:
|
||||
|
||||
- ``assimp``: problematic from a licensing perspective and no longer
|
||||
needed by anything else
|
||||
- ``clutter-1.0``: legacy component moved to meta-gnome
|
||||
- ``clutter-gst-3.0``: legacy component moved to meta-gnome
|
||||
- ``clutter-gtk-1.0``: legacy component moved to meta-gnome
|
||||
- ``cogl-1.0``: legacy component moved to meta-gnome
|
||||
- ``core-image-clutter``: removed along with clutter
|
||||
- ``linux-yocto``: removed version 5.4 recipes (5.14 and 5.10 still
|
||||
provided)
|
||||
- ``mklibs-native``: not actively tested and upstream mklibs still
|
||||
requires Python 2
|
||||
- ``mx-1.0``: obsolete (last release 2012) and isn't used by anything in
|
||||
any known layer
|
||||
- ``packagegroup-core-clutter``: removed along with clutter
|
||||
|
||||
|
||||
Removed classes
|
||||
---------------
|
||||
|
||||
- ``clutter``: moved to meta-gnome along with clutter itself
|
||||
- ``image-mklibs``: not actively tested and upstream mklibs still
|
||||
requires Python 2
|
||||
- ``meta``: no longer useful. Recipes that need to skip installing
|
||||
packages should inherit ``nopackages`` instead.
|
||||
|
||||
|
||||
Prelinking disabled by default
|
||||
------------------------------
|
||||
|
||||
Recent tests have shown that prelinking works only when PIE is not
|
||||
enabled (see `here <https://rlbl.me/prelink-1>`__ and `here <https://rlbl.me/prelink-2>`__),
|
||||
and as PIE is both a desirable security feature, and the only
|
||||
configuration provided and tested by the Yocto Project, there is
|
||||
simply no sense in continuing to enable prelink.
|
||||
|
||||
There's also a concern that no one is maintaining the code, and there
|
||||
are open bugs (including `this serious one <https://bugzilla.yoctoproject.org/show_bug.cgi?id=14429>`__).
|
||||
Given that prelink does intricate address arithmetic and rewriting
|
||||
of binaries the best option is to disable the feature. It is recommended
|
||||
that you consider disabling this feature in your own configuration if
|
||||
it is currently enabled.
|
||||
|
||||
|
||||
Virtual runtime provides
|
||||
------------------------
|
||||
|
||||
Recipes shouldn't use the ``virtual/`` string in :term:`RPROVIDES` and
|
||||
:term:`RDEPENDS` - it is confusing because ``virtual/`` has no special
|
||||
meaning in :term:`RPROVIDES` and :term:`RDEPENDS` (unlike in the
|
||||
corresponding build-time :term:`PROVIDES` and :term:`DEPENDS`).
|
||||
|
||||
|
||||
Tune files moved to architecture-specific directories
|
||||
-----------------------------------------------------
|
||||
|
||||
The tune files found in ``conf/machine/include`` have now been moved
|
||||
into their respective architecture name directories under that same
|
||||
location; e.g. x86 tune files have moved into an ``x86`` subdirectory,
|
||||
MIPS tune files have moved into a ``mips`` subdirectory, etc.
|
||||
The ARM tunes have an extra level (``armv8a``, ``armv8m``, etc.) and
|
||||
some have been renamed to make them uniform with the rest of the tunes.
|
||||
See `this commit <http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=1d381f21f5f13aa0c4e1a45683ed656ebeedd37d>`__
|
||||
for reference.
|
||||
|
||||
If you have any references to tune files (e.g. in custom machine
|
||||
configuration files) they will need to be updated.
|
||||
|
||||
|
||||
Extensible SDK host extension
|
||||
-----------------------------
|
||||
|
||||
For a normal SDK, some layers append to :term:`TOOLCHAIN_HOST_TASK`
|
||||
unconditionally which is fine, until the eSDK tries to override the
|
||||
variable to its own values. Instead of installing packages specified
|
||||
in this variable it uses native recipes instead - a very different
|
||||
approach. This has led to confusing errors when binaries are added
|
||||
to the SDK but not relocated.
|
||||
|
||||
To avoid these issues, a new ``TOOLCHAIN_HOST_TASK_ESDK`` variable has
|
||||
been created. If you wish to extend what is installed in the host
|
||||
portion of the eSDK then you will now need to set this variable.
|
||||
|
||||
|
||||
Package/recipe splitting
|
||||
------------------------
|
||||
|
||||
- ``perl-cross`` has been split out from the main ``perl`` recipe to
|
||||
its own ``perlcross`` recipe for maintenance reasons. If you have
|
||||
bbappends for the perl recipe then these may need extending.
|
||||
|
||||
- The ``wayland`` recipe now packages its binaries in a
|
||||
``wayland-tools`` package rather than putting them into
|
||||
``wayland-dev``.
|
||||
|
||||
- Xwayland has been split out of the xserver-xorg tree and thus is now
|
||||
in its own ``xwayland`` recipe. If you need Xwayland in your image
|
||||
then you may now need to add it explicitly.
|
||||
|
||||
|
||||
Image / SDK generation changes
|
||||
------------------------------
|
||||
|
||||
- Recursive dependencies on the ``do_build`` task are now disabled when
|
||||
building SDKs. These are generally not needed; in the unlikely event
|
||||
that you do encounter problems then it will probably be as a result of
|
||||
missing explicit dependencies that need to be added.
|
||||
|
||||
- Errors during "complementary" package installation (e.g. for ``*-dbg``
|
||||
and ``*-dev`` packages) during image construction are no longer
|
||||
ignored. Historically some of these packages had installation problems,
|
||||
that is no longer the case. In the unlikely event that you see errors
|
||||
as a result, you will need to fix the installation/packaging issues.
|
||||
|
||||
- When building an image, only packages that will be used in building
|
||||
the image (i.e. the first entry in :term:`PACKAGE_CLASSES`) will be
|
||||
produced if multiple package types are enabled (which is not a typical
|
||||
configuration). If in your CI system you need to have the original
|
||||
behaviour, use ``bitbake --runall build <target>``.
|
||||
|
||||
- The ``-lic`` package is no longer automatically added to
|
||||
:term:`RRECOMMENDS` for every other package when
|
||||
:term:`LICENSE_CREATE_PACKAGE` is set to "1". If you wish all license
|
||||
packages to be installed corresponding to packages in your image, then
|
||||
you should instead add the new ``lic-pkgs`` feature to
|
||||
:term:`IMAGE_FEATURES`.
|
||||
|
||||
|
||||
Miscellaneous
|
||||
-------------
|
||||
|
||||
- Certificates are now properly checked when bitbake fetches sources
|
||||
over HTTPS. If you receive errors as a result for your custom recipes,
|
||||
you will need to use a mirror or address the issue with the operators
|
||||
of the server in question.
|
||||
|
||||
- ``avahi`` has had its GTK+ support disabled by default. If you wish to
|
||||
re-enable it, set ``AVAHI_GTK = "gtk3"`` in a bbappend for the
|
||||
``avahi`` recipe or in your custom distro configuration file.
|
||||
|
||||
- Setting the ``BUILD_REPRODUCIBLE_BINARIES`` variable to "0" no longer
|
||||
uses a strangely old fallback date of April 2011, it instead disables
|
||||
building reproducible binaries as you would logically expect.
|
||||
|
||||
- Setting noexec/nostamp/fakeroot varflags to any value besides "1" will
|
||||
now trigger a warning. These should be either set to "1" to enable, or
|
||||
not set at all to disable.
|
||||
|
||||
- The previously deprecated ``COMPRESS_CMD`` and
|
||||
``CVE_CHECK_CVE_WHITELIST`` variables have been removed. Use
|
||||
``CONVERSION_CMD`` and :term:`CVE_CHECK_WHITELIST` respectively
|
||||
instead.
|
||||
|
||||
- The obsolete ``oe_machinstall`` function previously provided in the
|
||||
:ref:`utils <ref-classes-utils>` class has been removed. For
|
||||
machine-specific installation it is recommended that you use the
|
||||
built-in override support in the fetcher or overrides in general
|
||||
instead.
|
||||
|
||||
Reference in New Issue
Block a user