[yocto] Can't build SDK while shrinking shadow tools

[Khem Raj]

On Fri, Jun 14, 2019 at 2:16 AM Jérémy Singy <jeremy.singy at gmail.com> wrote:

> Hi,
>
> I'm facing a problem by trying to shrink the size of our root filesystem.
> To avoid installing some unneeded tools such as adduser, groupadd,
> nologin, etc. I just created as usual a shadow_%.bbappend in our layer
> which removes the content using do_install_append:
>
>     # do not install alternatives
>     ALTERNATIVE_${PN} = ""
>     ALTERNATIVE_${PN}-base = ""


This is most probably the reason for your issue
You may want to remove the alternatives which you are deleting but not
everything

>
>
>     # remove unwanted files on target
>     do_install_append_class-target () {
>       rm -r ${D}${base_bindir}
>       rm -r ${D}${base_sbindir}
>       rm -r ${D}${bindir}
>       rm -r ${D}${sbindir}
>     }
>
> Building an image with this works well and I got rid of the unwanted
> tools but I get an error whenever I try to build the SDK for this image
> with do_populate_sdk:
>
>     WARNING: ceres-image-1.0-r0 do_populate_sdk:
> nativesdk-util-linux.postinst returned 1, marking as unpacked only,
> configuration required on target.
>     ERROR: ceres-image-1.0-r0 do_populate_sdk: Postinstall scriptlets
> of ['nativesdk-util-linux'] have failed. If the intention is to defer
> them to first boot,
>     then please place them into pkg_postinst_ontarget_${PN} ().
>     Deferring to first boot via 'exit 1' is no longer supported.
>     Details of the failure are in
>
> /home/chsingj/yocto-thud/tmp/work/ceres_con-oe-linux-gnueabi/ceres-image/1.0-r0/temp/log.do_populate_sdk.
>     ERROR: ceres-image-1.0-r0 do_populate_sdk: Function failed:
> do_populate_sdk
>     ERROR: Logfile of failure stored in:
>
> /home/chsingj/yocto-thud/tmp/work/ceres_con-oe-linux-gnueabi/ceres-image/1.0-r0/temp/log.do_populate_sdk.28331
>     ERROR: Task
> (/home/chsingj/meta-delta/recipes-core/images/ceres-image.bb:
> do_populate_sdk)
> failed with exit code '1'
>     NOTE: Tasks Summary: Attempted 2730 tasks of which 2729 didn't
> need to be rerun and 1 failed.
>
> The log file shows an error with update-alternatives (probably a
> failing ln call):
>
>     update-alternatives: Error: not linking
>
> [BUILDPATH]/tmp/work/ceres_con-oe-linux-gnueabi/ceres-image/1.0-r0/sdk/image/opt/ceres/sdk-2019.05-r1/sysroots/x86_64-delta-linux/sbin/nologin
> to
> /opt/ceres/sdk-2019.05-r1/sysroots/x86_64-delta-linux/sbin/nologin.util-linux
> since
> [BUILDPATH]/tmp/work/ceres_con-oe-linux-gnueabi/ceres-image/1.0-r0/sdk/image/opt/ceres/sdk-2019.05-r1/sysroots/x86_64-delta-linux/sbin/nologin
> exists and is not a link
>
> If I remove the bbappend, the SDK builds fine but of course my image
> contains the unwanted files. I tried many other recipe tweaks but I
> can't get over some build errors. I'd like to avoid a solution using
> ROOTFS_POSTPROCESS_COMMAND in the image recipe as I would have to
> explicitely list all shadow tools and it would blow up my recipe. Is
> there any solution here? Is it maybe a bug that can be fixed? Thanks!
>
> Regards,
> Jeremy
> --
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