linux/poky.git/bitbake/lib/bb/parse/ast.py, branch scarthgap-5.0.15

bitbake: ast: Change deferred inherits to happen per recipe

2025-06-11T15:17:34+00:00

Currently deferred inherits get processed once for all class extensions as a minor speed optimisation. Unfortunately this limits our options for being able to report deferred classes to our code. There are two challenges with using our deferred classes in OE at present. One is that PACKAGECONFIG values don't work well with class overrides like class-native if there are deferred classes based on PACKAGECONFIG, such as python support. The second is that toolchain selection is proving problematic to implement due to interactions between the toolchain deferred inherit, the class extensions and class overrides being very late. By changing deferred inherits to be recipe extension specific, we open the way to generate events and "peek" at where things will end up, allowing the class overrides to be set earlier. The class extension code is updated to use a deferred inherit for the class extension inheriting so that it is still inherited last. (Bitbake rev: 139f61fe9eec221745184a14b3618d2dfa650b91) Signed-off-by: Richard Purdie Signed-off-by: Steve Sakoman

bitbake: ast/BBHandler: Add inherit_defer support

2024-01-18T10:15:58+00:00

Add support for an inherit_defer statement which works as inherit does but is only evaulated at the end of parsing. This allows conditional expressions to be evaulated 'late' meaning changes to PACKAGECONFIG from bbappends can be applied for example. This addresses a usability/confusion issue users have with the current conditional inherit mechanism since they don't realise the condition has to be expanded immediately with the current model. There is a commented out warning we could enable in future which warns about the use of a conditional inherit that isn't deferred. There is a behaviour difference in the placement of the inherit, particularly around variables set using ?= which means wen swapping from one to the other, caution must be used as values can change. (Bitbake rev: 5c2e840eafeba1f0f754c226b87bfb674f7bea29) Signed-off-by: Richard Purdie

bitbake: ast: Fix EXPORT_FUNCTIONS bug

2024-01-10T13:55:33+00:00

If you have two classes, both of which set EXPORT_FUNCTIONS for the same funciton and a standard funciton definition for the function that is exported, the export function can sometimes overwrite the standard one. The issue is that the internal flag the code uses isn't ovweritten if the variable is giving a new value. Fix the issue by using a comment in the code that is injected so that we know if it is ours or not. Also add some testing for EXPORT_FUNCTIONS, not perfect but a start. (Bitbake rev: 66306d5151acb0a26a171c338d8f60eb9eb16c6b) Signed-off-by: Richard Purdie

bitbake: fetch2: Add autorev warning when it is set too late

2023-03-22T13:57:04+00:00

Bitbake expects a consistent metadata environment when it parses. There are plenty of ways you can set a recipe to autorev at a point where parts of the fetcher have already been triggered leading to obsure bugs which I struggled to debug, let alone anyone not familar with the code. If anyone is running into the message from the commit, the issue is likely one of timing. Keep in mind that the anonymous python code in base.bbclass will expand variables like FILESPATH, WORKDIR and others which contain PV. The recipe needs to be set to AUTOREV before that anonymous python runs. In particular, that means you can't set SRCREV = "${AUTOREV}" in other anonymous python, it needs to happen earlier. (Bitbake rev: 4d9ec332d5bfc8b60b54f8ec2a17d34e35aa903a) Signed-off-by: Richard Purdie

bitbake: ast/data/codeparser: Add dependencies from python module functions

2022-12-17T08:52:28+00:00

Moving code into python modules is a very effective way to reduce parsing time and overhead in recipes. The downside has always been that any dependency information on which variables those functions access is lost and the hashes can therefore become less reliable. This patch adds parsing of the imported module functions and that dependency information is them injected back into the hash dependency information. Intermodule function references are resolved to the full function call names in our module namespace to ensure interfunction dependencies are correctly handled too. (Bitbake rev: 605c478ce14cdc3c02d6ef6d57146a76d436a83c) (Bitbake rev: 91441e157e495b02db44e19e836afad366ee8924) Signed-off-by: Richard Purdie

bitbake: parse: Add support for addpylib conf file directive and BB_GLOBAL_PYMODULES

2022-12-08T11:15:47+00:00

For many years OE-Core has injected it's own python modules into the python namespace using an immediate expansion of a variable in base.bbclass. It also added all entries from BBPATH to sys.path. We really need this to become a first class citizen of the langauge, this new addpylib directive allows that. Usage is of the form: addpylib The namespace is imported and if there is an attribute BBIMPORT, that list of names is iterated and imported too. This mirrors what OE-Core has done for a long time with one difference in implmentation, sys.path is only appended to. This means later imported namespaces can't overwrite an earlier one and can't overwrite the main python module space. In practice we've never done that and it isn't something we should encourage or support. The new directive is only applied for .conf files and not other filetypes as it only makes sense in that context. It is also only allowed in the "base configuration" context of cookerdata since adding it at the recipe level wouldn't work properly due to the way it changes the global namespace. At the same time, move the list of modules to place in the global namespace into a BB_GLOBAL_PYMODULES variable. It is intended that only the core layer should touch this and it is meant to be a very small list, usually os and sys. BB_GLOBAL_PYMODULES is expected to be set before the first addpylib directive. Layers adding a lib directory will now need to use this directive as BBPATH is not going to be added automatically by OE-Core in future. The directives are immediate operations so it does make modules available sooner than the current OE-Core approach. The new code appends to sys.path rather than prepends as core did, as overwriting python standard library modules would be a bad idea and naturally encouraging people to collaborate around our own core modules is desireable. (Bitbake rev: afb8478d3853f6edf3669b93588314627d617d6b) Signed-off-by: Richard Purdie

bitbake: ast: Improve function flags handling for EXPORT_FUNCTIONS

2022-04-14T08:48:33+00:00

Currently, if you use one of the functions from EXPORT_FUNCTIONS, the meaning of cleandirs and fakeroot are lost. This leads to the function changing in behaviour depending upon it's caller context. This isn't intended so add mapping for the cleandirs and fakeroot flags too. This does break devtool in OE-Core and there is a separate fix for that. [YOCTO #8621] (Bitbake rev: b074f4aff00923acc5bf6649d204d541a79fd2b6) Signed-off-by: Richard Purdie

bitbake: lib/bb: fix exit when found renamed variables

2022-02-21T23:37:26+00:00

Until now, if a renamed variable was found, bitbake exited immediately if it was in a class, but continued after an error message if the variable was in a recipe. This was caused by cookerdata.py CookerDataBuilder::parseBaseConfiguration checking a different DataSmart instance than the variable was set in. To solve the issue, add a special variable and set it when we find a renamed variable. Check for it in ast.py and bail out if needed. (Bitbake rev: d12400600e30549c88dc9e7883dc3d63b1dc1117) Signed-off-by: Marta Rybczynska Signed-off-by: Richard Purdie

bitbake: parse/ast: Show warnings for append/prepend/remove operators combined with +=/.=

2021-11-10T19:25:38+00:00

Operations like XXX:append += "YYY" are almost always wrong and this is a common mistake made in the metadata. Show warnings for these usages with a view to making it a fatal error eventually. (Bitbake rev: 8c31e75557dc6a8d8f407b5d24d6327889a3e3b1) Signed-off-by: Richard Purdie

bitbake: bitbake: Switch to using new override syntax

2021-08-02T14:44:10+00:00

This change updates the datastore to use the new override syntax using colons instead of underscores exclusively. It is expected layers would have to be converted to work with bitbake after this change. Supporting mixed syntax isn't possible, it is only feasible to have one internal representation of overrides. Whilst we can't warn for every possible override that may be set in the old format, show errors for _append/_prepend/_remove since those should never be present. (Bitbake rev: 7dcf317cc141dc980634f8c18bfa84f83e57206a) Signed-off-by: Richard Purdie