The distribution layer provides policy configurations for your
distribution.
Best practices dictate that you isolate these types of
configurations into their own layer.
Settings you provide in
conf/distro/ override
similar
settings that BitBake finds in your
distro.confconf/local.conf file in the Build
Directory.
The following list provides some explanation and references for what you typically find in the distribution layer:
classes:
Class files (.bbclass) hold
common functionality that can be shared among
recipes in the distribution.
When your recipes inherit a class, they take on the
settings and functions for that class.
You can read more about class files in the
"Classes"
section of the Yocto Reference Manual.
conf:
This area holds configuration files for the
layer (conf/layer.conf),
the distribution
(conf/distro/),
and any distribution-wide include files.
distro.conf
recipes-*: Recipes and append files that affect common functionality across the distribution. This area could include recipes and append files to add distribution-specific configuration, initialization scripts, custom image recipes, and so forth.