[yocto] busybox and images, how to change busybox based on image component added

[Khem Raj]

On Sat, Dec 10, 2016 at 9:48 AM,  <richard_allen at keysight.com> wrote:
> I am trying to remove the udhcp( client / server) components in busybox when
> I include ‘connman’ in my image.
>

usually busybox applets are used as fallbacks to fill in the blanks
and if there is
other package providing a given utility then its chosen to provide defaults.

look into meta/classes/update-alternatives.bbclass for setting
priorities which are
not default.


> I have a busybox_%.bbappend which will
> SRC_URI_append = " file://no-uhdpc.cfg"
>
> no-uhdcpc.cfg
>
> CONFIG_UDHCPD=n
> CONFIG_UDHCPC=n
>
> Hitting serval issues:
> -) need to do a bitbake -c cleanall busybox for busybox to be recompiled
> with new configuration
> -) need to do a bitbake -c clean core-image-minimal so a new rootfs will be
> generated with the busybox ( new compile of busybox does not appear to
> trigger a new rootfs creation)
>
> Note: I tried just using
>
> PACKAGE_EXCLUDE +=  " busybox-udhcpd busybox-udhcpc "
>
> to keep from having to change busybox configuration , but still end up with
> some of the udpc in the final image.
>
> ./sbin/udhcpc -> /bin/busybox.nosuid
> ./usr/lib/opkg/alternatives/udhcpc
>
> grep: image-files: Is a directory
> image-info.txt:PACKAGE_EXCLUDE = busybox-udhcpd busybox-udhcpc
>
> Appears that busybox does some installation based on the actually setting of
> CONFIG_UDHCPC and CONFIG_UDHCPD
>
>
> FInally, I would like the busybox append to only change if ‘connman’ is
> present
> In local.conf, add ‘example
>
> IMAGE_INSTALL_append = " example"
>
> In example.bb have
> RDEPENDS_example = " connman"
>
> So in busybox_*.bbappend
>
> I thought this would work (but seems to be ignored)
>
> SRC_URI_append_connman = " file://no-uhdpc.cfg"
> #SRC_URI_append = " file://no-uhdpc.cfg"
>
> But need to use
> SRC_URI_append = " file://no-uhdpc.cfg"
>
> to have the cfg added.
> also tried
> SRC_URI_append_pn-connman = " file://no-uhdpc.cfg"
>
> How best to get a busybox configuration changed based on installation of a
> package?
>
> Thanks
>
> Richard C. Allen
>
>
>
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