6.54. image_types.bbclass

The image_types class defines all of the standard image output types that you can enable through the IMAGE_FSTYPES variable. You can use this class as a reference on how to add support for custom image output types.

By default, the image class automatically enables the image_types class. The image class uses the IMGCLASSES variable as follows:

     IMGCLASSES = "rootfs_${IMAGE_PKGTYPE} image_types ${IMAGE_CLASSES}"
     IMGCLASSES += "${@['populate_sdk_base', 'populate_sdk_ext']['linux' in d.getVar("SDK_OS")]}"
     IMGCLASSES += "${@bb.utils.contains_any('IMAGE_FSTYPES', 'live iso hddimg', 'image-live', '', d)}"
     IMGCLASSES += "${@bb.utils.contains('IMAGE_FSTYPES', 'container', 'image-container', '', d)}"
     IMGCLASSES += "image_types_wic"
     IMGCLASSES += "rootfs-postcommands"
     IMGCLASSES += "image-postinst-intercepts"
     inherit ${IMGCLASSES}
        

The image_types class also handles conversion and compression of images.

Note

To build a VMware VMDK image, you need to add "wic.vmdk" to IMAGE_FSTYPES. This would also be similar for Virtual Box Virtual Disk Image ("vdi") and QEMU Copy On Write Version 2 ("qcow2") images.