67e3f24333
Previously printdiff code would iterate over tasks that were reported as invalid or absent, trying to follow dependency chains that would reach the most basic invalid items in the tree. While this works in tightly controlled local builds, it can lead to bizarre reports against industrial-sized sstate caches, as the code would not consider whether the overall target can be fulfilled from valid sstate objects, and instead report missing sstate signature files that perhaps were never even created due to hash equivalency providing shortcuts in builds. This commit reworks the logic in two ways: - start the iteration over final targets rather than missing objects and try to recursively arrive at the root of the invalid object dependency. A previous version of this patch relied relies on finding the most 'recent' signature in stamps or sstate in a different function later, and recursively comparing that to the current signature, which is unreliable on real world caches. - if a given object can be fulfilled from sstate, recurse only into its setscene dependencies; bitbake wouldn't care if dependencies for the actual task are absent, and neither should printdiff I wrote a recursive function for following dependencies, as doing recursive algorithms non-recursively can result in write-only code, as was the case here. [YOCTO #15289] (Bitbake rev: aadeca63da5d96160ce4d6d71da556e2e033f9b7) Signed-off-by: Alexander Kanavin <alex@linutronix.de> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Poky
Poky is an integration of various components to form a pre-packaged build system and development environment which is used as a development and validation tool by the Yocto Project. It features support for building customised embedded style device images and custom containers. There are reference demo images ranging from X11/GTK+ to Weston, commandline and more. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK suitable for IDE integration.
Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of BSP layers which extend the systems capabilities in a modular way. Many layers are available and can be found through the layer index.
As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation, the 'meta-yocto' layer which has configuration and hardware support components. These components are all part of the Yocto Project and OpenEmbedded ecosystems.
The Yocto Project has extensive documentation about the system including a reference manual which can be found at https://docs.yoctoproject.org/
OpenEmbedded is the build architecture used by Poky and the Yocto project. For information about OpenEmbedded, see the OpenEmbedded website.
Contribution Guidelines
Please refer to our contributor guide here: https://docs.yoctoproject.org/dev/contributor-guide/ for full details on how to submit changes.
Where to Send Patches
As Poky is an integration repository (built using a tool called combo-layer), patches against the various components should be sent to their respective upstreams:
OpenEmbedded-Core (files in meta/, meta-selftest/, meta-skeleton/, scripts/):
- Git repository: https://git.openembedded.org/openembedded-core/
- Mailing list: openembedded-core@lists.openembedded.org
BitBake (files in bitbake/):
- Git repository: https://git.openembedded.org/bitbake/
- Mailing list: bitbake-devel@lists.openembedded.org
Documentation (files in documentation/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/
- Mailing list: docs@lists.yoctoproject.org
meta-yocto (files in meta-poky/, meta-yocto-bsp/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto
- Mailing list: poky@lists.yoctoproject.org
If in doubt, check the openembedded-core git repository for the content you intend to modify as most files are from there unless clearly one of the above categories. Before sending, be sure the patches apply cleanly to the current git repository branch in question.