[yocto] recipe removing (some)contents of /etc

[Smith, Virgil]

> > Change
> > IMAGE_INSTALL += “canlogger”
> > to
> > IMAGE_INSTALL_append = “ canlogger”
> > or possibly better
> > EXTRA_IMAGE_INSTALL_append = “ canlogger”
>
>   if you're putting this in local.conf, i'm pretty sure the preferred syntax is just:
>   EXTRA_IMAGE_INSTALL = "canlogger"

Yes, I think rday is correct and the intended purpose of EXTRA_IMAGE_INSTALL is to be used entirely from local.conf and thereby avoid the += vs ?= vs _append issues I mentioned.  At least EXTRA_IMAGE_FEATURES is listed this way in the Yocto manual.

To force an analogy, rday told you what side of the street is safe to walk on (use EXTRA_IMAGE_FEATURES) and I pointed out what dog bit you and how to pull his teeth (use _append).  However, depending on your situation, I may not have gotten all of those teeth (there are other issues with machine/other overrides potentially influencing variable values).

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