[OE-core] [CONSOLIDATED PULL 14/28] Add new IMAGE_CLASSES variable for classes for image generation

[Richard Purdie]

On Sat, 2011-11-05 at 10:22 -0700, Saul Wold wrote:
> From: Matthew McClintock <msm at freescale.com>
> 
> Allows us to import classes only for images and not to the global
> namespace
> 
> Signed-off-by: Matthew McClintock <msm at freescale.com>
> ---
>  meta/classes/image.bbclass  |    3 ++-
>  meta/conf/local.conf.sample |    6 ++++++
>  2 files changed, 8 insertions(+), 1 deletions(-)
> 
> diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
> index 05f4331..a2770a4 100644
> --- a/meta/classes/image.bbclass
> +++ b/meta/classes/image.bbclass
> @@ -111,7 +111,8 @@ def get_devtable_list(d):
>          str += " %s" % bb.which(bb.data.getVar('BBPATH', d, 1), devtable)
>      return str
>  
> -inherit image_types
> +IMAGE_CLASSES ?= "image_types"
> +inherit ${IMAGE_CLASSES}
>  
>  IMAGE_POSTPROCESS_COMMAND ?= ""
>  MACHINE_POSTPROCESS_COMMAND ?= ""
> diff --git a/meta/conf/local.conf.sample b/meta/conf/local.conf.sample
> index 73ab9f8..aa546c7 100644
> --- a/meta/conf/local.conf.sample
> +++ b/meta/conf/local.conf.sample
> @@ -141,6 +141,12 @@ EXTRA_IMAGE_FEATURES = "debug-tweaks"
>  # NOTE: mklibs also needs to be explicitly enabled for a given image, see local.conf.extended
>  USER_CLASSES ?= "image-mklibs image-prelink"
>  
> +# Additional image generation features
> +#
> +# The following is a list of classes to import to use in the generation of images
> +# currently an example class is image_types_uboot
> +# IMAGE_CLASSES = " image_types_uboot"
> +

Most initial new users don't need to see this. Can we place this into
local.conf.sample.extended please?

Cheers,

Richard