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mirror of https://git.yoctoproject.org/poky synced 2026-05-08 17:19:20 +00:00
Christopher Larson 107269d9d0 bitbake: codeparser: don't interact with the cache for subshells
Doing so was causing leakage between the execs of the main value and that of
the subshell value, and was causing the cached subshell value to be used for
the overall variable. At the least this could cause execs contamination
between two variables that while differing, run the same subshell. Beyond
that, it's possible we could have been using an incomplete cached value of
a subshell for that of the main value.

Before this, bb_codeparser.dat would change between parses with differing
bbfile parse order. After, it does not change.

The codeparser cache version is bumped, to ensure we don't use potentially
incorrect cached values from previous runs.

This should hopefully resolve the difficult-to-reproduce issues we've seen at
Mentor Graphics where bitbake emits a script to run a task and misses
dependent functions, resulting in 'command not found' failures. This issue has
also been mentioned on the oe devel list, where someone hit a case where
oe_runmake was missing from a do_install task (IIRC). Adding debug information
showed that bitbake's information about the variable dependencies for this
task is inaccurate in the failure cases.

(Bitbake rev: 97537e4786a1e3a329249497498b59b8f5174fc3)

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2014-04-29 17:34:24 +01:00
2014-04-29 17:20:12 +01:00
2014-01-02 12:58:54 +00:00
2014-01-02 12:58:54 +00:00

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, 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.
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