84a7485025
The runtaskdep data in siginfo files was written out with full paths to the bb files, matching bitbake's internal "unique key" ID for recipes/tasks. When originally implemented this made sense. Over time, the main use for the data in siginfo files has become to match against other siginfo files to debug changes of hash calcuations. The recipename data is not useful for this as the siginfo filenames use PN instead which can often be derived from the recipe filename but not always. It is time to throw away the 'tid' data format and switch over the use a hybrid PN form which includes the multiconfig. That can be easily stripped off in the find_siginfo code in oe-core. The other purpose of having a sortable dependency ID is retained and the multiconfig needs to be included to allow the taskhashes to be processed and calculated correctly. PN is meant to be unique between recipes, only one would ever be built so using PN in this location is fine. The one risk of this change is there isn't any compatibility to the old format. I'm not convinced we should spend time complicating the code with it. This change will change the taskhashes everywhere so the only mixing of old and new siginfo files will be either through hash equivalence or through users using the tool against old and new info files manually which will give some weird output but it should be clear they're in different formats as there would be large paths from the old files not present in the new ones. We have options to add backwards compatibility if some issue is found to need that. (Bitbake rev: 637933e2e5a59228a8d17aae4160551cab5f2f61) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Bitbake
BitBake is a generic task execution engine that allows shell and Python tasks to be run efficiently and in parallel while working within complex inter-task dependency constraints. One of BitBake's main users, OpenEmbedded, takes this core and builds embedded Linux software stacks using a task-oriented approach.
For information about Bitbake, see the OpenEmbedded website: https://www.openembedded.org/
Bitbake plain documentation can be found under the doc directory or its integrated html version at the Yocto Project website: https://docs.yoctoproject.org
Bitbake requires Python version 3.8 or newer.
Contributing
Please refer to https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded for guidelines on how to submit patches, just note that the latter documentation is intended for OpenEmbedded (and its core) not bitbake patches (bitbake-devel@lists.openembedded.org) but in general main guidelines apply. Once the commit(s) have been created, the way to send the patch is through git-send-email. For example, to send the last commit (HEAD) on current branch, type:
git send-email -M -1 --to bitbake-devel@lists.openembedded.org
Mailing list:
https://lists.openembedded.org/g/bitbake-devel
Source code:
https://git.openembedded.org/bitbake/
Testing
Bitbake has a testsuite located in lib/bb/tests/ whichs aim to try and prevent regressions. You can run this with "bitbake-selftest". In particular the fetcher is well covered since it has so many corner cases. The datastore has many tests too. Testing with the testsuite is recommended before submitting patches, particularly to the fetcher and datastore. We also appreciate new test cases and may require them for more obscure issues.
To run the tests "zstd" and "git" must be installed.
The assumption is made that this testsuite is run from an initialized OpenEmbedded build
environment (i.e. source oe-init-build-env is used). If this is not the case, run the
testsuite as follows:
export PATH=$(pwd)/bin:$PATH
bin/bitbake-selftest
The testsuite can alternatively be executed using pytest, e.g. obtained from PyPI (in this case, the PATH is configured automatically):
pytest