8ebe7be3d9
Currently we have a hierarchy of pkgdata directories and the code has to put together a search path and look through each in turn until it finds the data it needs. This has lead to a number of hardcoded paths and file globing which is unpredictable and undesirable. Worse, certain tricks that should be easy like a GL specific package architecture become problematic with the curretn search paths. With the modern sstate code, we can do better and construct a single pkgdata directory for each machine in just the same way as we do for the sysroot. This is already tried and well tested. With such a single directory, all the code that iterated through multiple pkgdata directories and simply be removed and give a significant simplification of the code. Even existing build directories adapt to the change well since the package contents doesn't change, just the location they're installed to and the stamp for them. The only complication is the we need a different shlibs directory for each multilib. These are only used by package.bbclass and the simple fix is to add MLPREFIX to the shlib directory name. This means the multilib packages will repackage and the sstate checksum will change but an existing build directory will adapt to the changes safely. It is close to release however I believe the benefits this patch give us are worth consideration for inclusion and give us more options for dealing with problems like the GL one. It also sets the ground work well for shlibs improvements in 1.6. (From OE-Core rev: 1b8e4abd2d9c0901d38d89d0f944fe1ffd019379) 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.