[yocto] understanding what's in an image

Gary Thomas gary at mlbassoc.com
Tue Jan 10 04:03:09 PST 2012


On 2012-01-09 17:51, James Abernathy wrote:
> I'm trying to understand how bitbake parses the poky directory tree a little better.
>
> The best I can figure all .bb files are NOT included. Just some of them are.  I'm guessing that the .bb in the meta/recipe-sato named core-image-sato.bb is the one that is used to start the parsing if bitbake core-image-sato is executed.
> I originally thought all subdirectories of a path included in BBLAYER were parsed looking for .bb files, but now I know that is not true, but not sure why.
>
> For example, it does not appear that webkit is included in the core-image-sato even though the recipe-sato directory includes the webkit subdirectory with it's recipe.  What would be the proper way of adding the webkit to core-image-sato??

The 'webkit' is just a library used to build tools such as a
web browser.  You might want to start with an application that
actually uses webkit, such as web-webkit.

To build an image which includes web-webkit, add this line to
your local.conf file and rebuild the image:
   IMAGE_INSTALL += "web-webkit"

You can also build packages which are not installed into your
image by default and use a package manager (e.g. zypper) to
install the package later onto a running system.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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