Common targets are:
- meta-agl layer:
  - included by default
    * agl-image-boot                (just enough to boot)
    * agl-image-minimal             (minimal filesystem with APIs)
    * agl-image-minimal-crosssdk    (crosssdk for ^^)

    * agl-image-weston              (minimal filesystem with weston)

- meta-agl-demo:                    (IVI demo with UI)
  - with 'agl-demo'
    * agl-image-ivi                 (base for IVI targets)
    * agl-image-ivi-crosssdk        (sdk for ^^)

    * agl-image-graphical-qt5       (weston plus qt5 framework libs)
    * agl-image-graphical-qt5-crosssdk  (sdk for ^^)

    * agl-image-graphical-html5     (weston plus chromium for html5)

    * agl-image-cluster             (minimal image with APIs for cluster)
    * agl-image-cluster-qt5         (image with QT5 and APIs for cluster)

    * agl-image-telematics          (image with APIs for telematics)

    * agl-demo-platform             (* default IVI demo target *)
    * agl-demo-platform-crosssdk    (sdk for ^^)

    * agl-cluster-demo-platform     (cluster demo image)
    * agl-cluster-demo-platform-crosssdk  (sdk for ^^)
    * agl-cluster-demo-qtcompositor (cluster demo using own compositor)

    * agl-telematics-demo-platform  (telematics demo image)
    * agl-telematics-demo-platform-crosssdk  (sdk for ^^)