[yocto] File system for alternate partition

[Bollinger, Seth]

>I'm not sure without digging into it further (which I'm unable to do at
>the 
>moment, perhaps someone else can.)

Just as an FYI for anyone who might find this thread interesting, I fixed
the problem by adding another hook into poky/lib/oe/image.py before the
IMAGE_CMD hook.

It defaults to doing nothing, but can be overridden by image recipes to
remove directories that have no value for the particular image.

diff --git a/meta/lib/oe/image.py b/meta/lib/oe/image.py
index c9b9033..c74821f 100644
--- a/meta/lib/oe/image.py
+++ b/meta/lib/oe/image.py
@@ -274,6 +274,7 @@ class Image(ImageDepGraph):
                 bb.data.update_data(localdata)
                 localdata.setVar('type', type)
 
+                cmds.append("\t" + (localdata.getVar("IMAGE_CLEAN_FS",
True) or ""))
                 cmds.append("\t" + localdata.getVar("IMAGE_CMD", True))
                 cmds.append(localdata.expand("\tcd ${DEPLOY_DIR_IMAGE}"))


Seth