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Currently, do_rootfs has a dependency on all the do_package output being present due to its usage of the pkgdata directories. This means that if you run: bitbake xxxx-image -c rootfs you end up having to fetch and unpack all the do_package data which is usually large and inefficient. It also means rm_work has to leave all the do_package data lying around so rootfs works. This patch splits the actual creation of the pkgdata directory off into a separate task, "packagedata" which happens immediately after do_package. We can then remap the dependencies so this task is depended upon, not do_package. Sstate can then be programmed not to require do_package at the appropriate times. Whilst this patch doesn't do so, it opens the possibility of rm_work wiping out the do_package output from WORKDIR as long as it also removed the do_package stamp (both normal and setscene variants) and allowing more space savings with rm_work which has been regularly requested. (From OE-Core rev: 6107ee294afde395e39d084c33e8e94013c625a9) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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 = "") 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, patches against the various components should be sent to their respective upstreams.
bitbake: bitbake-devel@lists.openembedded.org
meta-yocto: poky@yoctoproject.org
Most 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. 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.