fe30cbc2cb
This patch adds tracking of the history of variable assignments. The changes are predominantly localized to data_smart.py and parse/ast.py. cooker.py and data.py are altered to display the recorded data, and turn tracking on for the bitbake -e case. The data.py update_data() function warns DataSmart.finalize() to report the caller one further back up the tree. In general, d.setVar() does what it used to do. Optionally, arguments describing an operation may be appended; if none are present, the operation is implicitly ignored. If it's not ignored, it will attempt to infer missing information (name of variable, value assigned, file and line) by examining the traceback. This slightly elaborate process eliminates a category of problems in which the 'var' member of the keyword arguments dict is set, and a positional argument corresponding to 'var' is also set. It also makes calling much simpler for the common cases. The resulting output gives you a pretty good picture of what values got set, and how they got set. RP Modifications: a) Split from IncludeHistory to separate VariableHistory b) Add dedicated copy function instead of deepcopy c) Use COW for variables dict d) Remove 'value' loginfo value and just use 'details' e) Desensitise code for calling order (set 'op' before/after infer_caller_details was error prone) f) Fix bug where ?= "" wasn't shown correctly g) Log more set operations as some variables mysteriously acquired values previously h) Standardise infer_caller_details to be triggered from .record() where at all possible to reduce overhead in non-enabled cases i) Rename variable parameter names to match inference code j) Add VariableHistory emit() function to match IncludeHistory k) Fix handling of appendVar, prependVar and matching flag ops l) Use ignored=True to stop logging further events where appropriate (Bitbake rev: f00524a3729000cbcb3317fee933ac448fae5e2d) Signed-off-by: Peter Seebach <peter.seebach@windriver.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/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.