[yocto] Removing busybox completely from the generated image

[Martin Hundebøll]

Hi Ivan,

On 2018-02-19 17:13, Iván Castell wrote:
> 
> 
> 2018-02-19 16:18 GMT+01:00 Maxin B. John <maxin.john at intel.com 
> <mailto:maxin.john at intel.com>>:
> 
>     Hi,
> 
>     On Mon, Feb 19, 2018 at 02:17:38AM -0800, Khem Raj wrote:
>     > On Mon, Feb 19, 2018 at 12:35 AM, Iván Castell
>     > <icastell at nayarsystems.com <mailto:icastell at nayarsystems.com>> wrote:
>     > > I have tried breaking apart packagegroup-core-boot, making a copy in my
>     > > custom layer, removing the line referencing busybox:
>     > >
>     > >     ## VIRTUAL-RUNTIME_login_manager ?= "busybox"
> 
>     Have you considered "toybox" ? It probably wouldn't work right-away.
>     Still,
>     toybox was designed to provide a replacement for busybox. It is
>     available
>     in "meta-oe"
> 
>     http://cgit.openembedded.org/meta-openembedded/tree/meta-oe/recipes-core/toybox/toybox_0.7.5.bb
>     <http://cgit.openembedded.org/meta-openembedded/tree/meta-oe/recipes-core/toybox/toybox_0.7.5.bb>
> 
> 
> 
> Thank you for the information, I will take into account that tool for 
> future embedded projects. However, the focus of this issue was to remove 
> completely busybox from the image, not replacing it by another 
> application box.
> 
> I have created a bbappend with a fragment of the busybox configuration 
> disabling syslog and udhcpc applets. It works. However the busybox 
> binary and a lot of applets are still there (adduser, unzip, fbset, 
> traceroute, and more).
> 
> Disabling all different applets and installing native tools instead 
> could be the right way to procede. Not a nice solution, but at least it 
> should work...

Here's what we have in our distro config to disable busybox:

 > # Disable busybox
 > VIRTUAL-RUNTIME_base-utils = ""
 > ALTERNATIVE_PRIORITY_pn-busybox = "1"

The priority setting make bitbake pull in alternatives from util-linux / 
coreutils when appropriate.

// Martin