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Richard Purdie 011608a7b0 bitbake: data_smart: Fix bug with overrides and weak default values

(aka pay the cookie monster for weak defaults)

If you have code like:

MYVAR = "a"
MYVAR_override ??= "b"

then MYVAR will get the value "a" even when override is in OVERRIDES. The
reason is that the value of ??= is set as a flag not a value and the cookie
monster isn't paid.

The fix is to ensure appropriate payment is made for a defaultval varflag
matching the usual setVar case.

(Bitbake rev: 3d8044bc79c482c5ea008ddf12a8128dcd1527ee)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2013-06-21 13:00:57 +01:00

bitbake

bitbake: data_smart: Fix bug with overrides and weak default values

2013-06-21 13:00:57 +01:00

documentation

dev-manual: Added definition for the term "Meta-Toolchain"

2013-06-14 17:33:31 +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/

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.