PTU5KAS/docs/format-changelog.rst
Benedikt Niedermayr c38517df83 add conditional environment variables
Until now all environment variables in the kas config's
env section require a default value.
In some cases we want to rely on the weak assignment
of bitbake instead of relying on the default value of the
variable in the kas config.

This means if we assign the 'None' value or nothing to the variable
in the kas config then it is only added to BB_ENV_EXTRAWHITE or
BB_ENV_PASSTHROUGH_ADDITIONS without setting it as environment
variable.

Signed-off-by: Benedikt Niedermayr <benedikt.niedermayr@siemens.com>
[Jan: fixed overlong line]
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2022-11-10 19:03:48 +01:00

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Configuration Format Changes
============================
Version 1 (Alias '0.10')
------------------------
Added
~~~~~
- Include mechanism
- Version check
Version 2
---------
Changed
~~~~~~~
- Configuration file versions are now integers
Fixed
~~~~~
- Including files from repos that are not defined in the current file
Version 3
---------
Added
~~~~~
- ``Task`` key that allows to specify which task to run (``bitbake -c``)
Version 4
---------
Added
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- ``Target`` key now allows to be a list of target names
Version 5
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Changed behavior
~~~~~~~~~~~~~~~~
- Using ``multiconfig:*`` targets adds appropriate ``BBMULTICONFIG`` entries to
the ``local.conf`` automatically.
Version 6
---------
Added
~~~~~
- ``env`` key now allows to pass custom environment variables to the bitbake
build process.
Version 7
---------
Added
~~~~~
- ``type`` property to ``repos`` to be able to express which version control
system to use.
Version 8
---------
Added
~~~~~
- ``patches`` property to ``repos`` to be able to apply additional patches to
the repo.
Version 9
---------
Added
~~~~~
- ``defaults`` key can now be used to set a default value for the repository
property ``refspec`` and the repository patch property ``repo``. These
default values will be used if the appropriate properties are not defined
for a given repository or patch.
Version 10
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Added
~~~~~
- ``build_system`` property to pre-select OE or Isar.
Version 11
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Changed behavior
~~~~~~~~~~~~~~~~
- String item ``includes`` are now using repo-relative paths. File-relative is
still supported by issues a deprecation warning.
- bblayers.conf is generated with ``BBPATH`` and ``BBFILES`` preset to common
defaults. Those can still be overwritten via ``bblayers_conf_headers``.
Added
~~~~~
- ``menu_configuration`` key stores the selections done via ``kas menu`` in a
configuration file. It is only evaluated by that plugin.
Version 12
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Added
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- For repositories, ``url`` and ``path`` can now be overridden with a
null-value to switch between version-controlled repositories and unversioned
local folders.
Version 13
----------
Added
~~~~~
- Variables used in the ``env`` section can now be assigned 'None' as value. In
this case the variables are only exported to the bb env whitelist.