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Paul Eggleton a0a3a44240 conf/bitbake.conf: allow cache reuse between bitbake, bitbake-layers and hob 
BB_ENV_EXTRAWHITE is set by the bitbake wrapper script but not by
bitbake-layers, and thus it was affecting the data hash and thus
invalidating the cache. Any variables passed through from the
environment by being added to this variable should themselves
influence the hash already if they are not already excluded from,
the data hash, so BB_ENV_EXTRAWHITE can be excluded.

Similarly, DISABLE_SANITY_CHECKS is set by the hob script in order to
have sanity checks run later, but not set by the bitbake wrapper script.
It doesn't actually affect the build itself and so its value can also
be excluded from the data hash.

These changes prevent unnecessary reparsing between executions of
bitbake, bitbake-layers, and the initial pseudo build within the hob
script.

Fixes [YOCTO #2680].

(From OE-Core rev: 84bcacd5b4737520f0fc76333f0165ef5b87c207)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2012-08-22 14:04:59 +01:00
bitbake bitbake: event/ast: Use better_exec instead of simple_exec 2012-08-22 13:59:57 +01:00
documentation documentation: remove references to Pimlico 2012-08-15 15:26:27 +01:00
meta conf/bitbake.conf: allow cache reuse between bitbake, bitbake-layers and hob 2012-08-22 14:04:59 +01:00
meta-hob meta-hob: Add a new meta-hob layer 2012-02-24 00:39:10 +00:00
meta-skeleton linux-yocto-custom: Clarify usage and clear COMPATIBLE_MACHINE 2012-08-07 12:56:34 +01:00
meta-yocto atom-pc: Drop glibc --with-tls option, its now the only option for glibc 2012-08-21 12:15:33 +01:00
scripts sstate-cache-management.sh: update for the SSTATE_MIRRORS 2012-08-20 16:53:17 +01:00
.gitignore gitignore: ignore build*/ entirely 2012-06-21 13:03:04 +01:00
LICENSE LICENSE: Clarify the license recipe source code is under 2010-06-10 10:13:18 +01:00
oe-init-build-env Various typoes fixed, all comments or output strings. 2012-03-26 12:13:05 +01:00
README README: Correct documentation URL in top-level README file 2012-06-08 11:46:52 +01:00
README.hardware README.hardware: extend USB-ZIP instructions 2012-04-01 12:52:03 +01:00

README 

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/