85408dfd36
I added more information about how BitBake actually runs a task. The information has to do with how tightly BB controls the execution environment of the build tasks to prevent contamination from the build machine from leaking into the task execution environment. This tight control actually causes some unexpected behavior during builds. For example, when a user exports and BB_ENV_EXTRAWHITE an environment item such as CCACHE_DIR, the effects of the environment item never make it to the BB task execution environment. They only make it to the data store. The user actually has to take some extra steps to export that environment item into the task execution environment. The added information I put into the "Running a Task" section describes these extra steps. Fixes [YOCTO #689] Reported-by: Wolfgang Denk <wd@denx.de> (From yocto-docs rev: f75a9d384c0d5ccaefe7ac2195917531b153cf5e) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> 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/community/documentation
For information about OpenEmbedded see their website: http://www.openembedded.org/