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Richard Purdie f2a15854e2 bitbake: ast: Change deferred inherits to happen per recipe
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: 29277cf4d88eb4dfa9572851177d009eab5afd0c)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2025-06-16 22:23:18 +01:00
bitbake bitbake: ast: Change deferred inherits to happen per recipe 2025-06-16 22:23:18 +01:00
contrib contrib/git-hooks: add a sendemail-validate example hook that adds FROM: lines to outgoing patch emails 2020-12-30 14:01:07 +00:00
documentation Add a document to list supported Yocto features 2025-06-16 16:00:51 +01:00
meta wic: Update after plugin name changes 2025-06-16 17:57:30 +01:00
meta-poky templates/default: do not separately enable sdl in qemu-system-native 2025-06-09 17:43:42 +01:00
meta-selftest wic: Update after plugin name changes 2025-06-16 17:57:30 +01:00
meta-skeleton multilib-example.conf: explicitly overwrite the BASELIB 2025-01-11 18:37:14 +00:00
meta-yocto-bsp wic: Update after plugin name changes 2025-06-16 17:57:30 +01:00
scripts wic: Avoid problems with "-" characters in plugin names 2025-06-16 17:57:30 +01:00
.b4-config b4-config: Add basic support for b4 contribution workflow 2025-02-06 10:40:55 +00:00
.gitignore vscode: drop .vscode folder 2024-02-19 11:34:33 +00:00
.templateconf meta-poky/conf: move default templates to conf/templates/default/ 2022-09-01 10:07:02 +01:00
LICENSE meta/lib+scripts: Convert to SPDX license headers 2019-05-09 16:31:55 +01:00
LICENSE.GPL-2.0-only meta/lib+scripts: Convert to SPDX license headers 2019-05-09 16:31:55 +01:00
LICENSE.MIT meta/lib+scripts: Convert to SPDX license headers 2019-05-09 16:31:55 +01:00
MAINTAINERS.md MAINTAINERS.md: fix markdown style issues 2025-02-05 12:49:56 +00:00
MEMORIAM MEMORIAM: Add recognition for contributors no longer with us 2020-01-30 15:22:35 +00:00
oe-init-build-env oe-init-build-env: generate .vscode from template 2024-02-19 11:34:33 +00:00
README.hardware.md README: Move to using markdown as the format 2021-06-16 16:33:18 +01:00
README.md Add README link to README.poky 2021-07-19 18:07:21 +01:00
README.OE-Core.md README.OE-Core.md: fix markdown style issues 2025-02-05 12:49:56 +00:00
README.poky.md README: Move to using markdown as the format 2021-06-16 16:33:18 +01:00
README.qemu.md README.qemu.md: fix markdown style issues 2025-02-05 12:49:56 +00:00
SECURITY.md SECURITY.md: fix markdown style issues 2025-02-05 12:49:56 +00:00

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/):

BitBake (files in bitbake/):

Documentation (files in documentation/):

meta-yocto (files in meta-poky/, meta-yocto-bsp/):

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.

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