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Patrick Ohly 7b95d5d701 bitbake.conf: DISTRO_FEATURES as overrides

As discussed in "[Openembedded-architecture] Yocto Compatible 2.0 +
signature changes", changes in .bbappend must depend on some explicit
configuration change, typically selecting a distro feature.

For _append and _remove, adding an override that is set only when the
corresponding entry is in DISTRO_FEATURES achieves that:

In local.conf:
  DISTRO_FEATURES_append = " my-distro-feature"

In layer.conf:
  DISTRO_FEATURES_OVERRIDES += "my-distro-feature"

In a .bbappend:
  do_install_append_df-my-distro-feature () {
       ...
  }

The subset of DISTRO_FEATURES that are made available as overrides
must be configured explicitly because using them this way should
be a conscious decision.

(From OE-Core rev: 3b3ae91a22d6f685e804df4f32cdeebe1bd6bd88)

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2017-06-12 15:08:32 +01:00

bitbake

bitbake: cookerdata: Implement LAYERSERIES_COMPAT and LAYERSERIES_CORENAMES

2017-06-12 15:07:39 +01:00

documentation

Documentation: Created YP 2.4 "latest" docs

2017-06-04 08:47:14 +01:00

README

Poky

Poky is an integration of various components to form a complete prepackaged build system and development environment. It features support for building customised embedded device style images. There are reference demo images featuring a X11/Matchbox/GTK themed UI called Sato. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK with 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 layers which extend the systems capabilities in a modular way.

As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation and various sources of information e.g. for the hardware support. Poky is in turn a component of the Yocto Project.

The Yocto Project has extensive documentation about the system including a reference manual which can be found at: http://yoctoproject.org/documentation

OpenEmbedded-Core is a layer containing the core metadata for current versions of OpenEmbedded. It is distro-less (can build a functional image with DISTRO = "nodistro") and contains only emulated machine support.

For information about OpenEmbedded, see the OpenEmbedded website: http://www.openembedded.org/

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:

bitbake: Git repository: http://git.openembedded.org/bitbake/ Mailing list: bitbake-devel@lists.openembedded.org

documentation: Git repository: http://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/ Mailing list: yocto@yoctoproject.org

meta-poky, meta-yocto-bsp: Git repository: http://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto(-bsp) Mailing list: poky@yoctoproject.org

Everything else should be sent to the OpenEmbedded Core mailing list. If in doubt, check the oe-core git repository for the content you intend to modify. Before sending, be sure the patches apply cleanly to the current oe-core git repository.

Git repository: http://git.openembedded.org/openembedded-core/
Mailing list: openembedded-core@lists.openembedded.org

Note: The scripts directory should be treated with extra care as it is a mix of oe-core and poky-specific files.