[yocto] Fwd: Unable to add a dev package to the Extended SDK

[Gabriele Favalessa]

Hi!

I'm attempting to add `curl-dev` to an Extensible SDK for yocto (sumo
release) with target machine qemuarm.

On a fresh checkout I've added to `conf/local.conf`

  TOOLCHAIN_TARGET_TASK_append = " curl-dev"

and then run `bitbake -c populate_sdk_ext core-image-minimal`.

This is the error I get:

ERROR: buildtools-tarball-1.0-r0 do_populate_sdk: Could not invoke dnf.
Command '/vol/space/poky-sumo/build/tmp/work/x8
6_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/recipe-sysroot-native/usr/bin/dnf
-y -c /vol/space/poky-sumo/bui
ld/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sdk/image/opt/poky/2.5.1/sysroots/none/etc/dnf/dnf
.conf
--setopt=reposdir=/vol/space/poky-sumo/build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sd
k/image/opt/poky/2.5.1/sysroots/none/etc/yum.repos.d
--repofrompath=oe-repo,/vol/space/poky-sumo/build/tmp/work/x86_64-
nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/oe-sdk-repo
--installroot=/vol/space/poky-sumo/build/tmp/work/x86_64-
nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sdk/image/opt/poky/2.5.1/sysroots/none
--setopt=logdir=/vol/space/pok
y-sumo/build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/temp
--nogpgcheck install curl-dev' retu
rned 1:
Added oe-repo repo from
/vol/space/poky-sumo/build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/oe
-sdk-repo
Last metadata expiration check: 0:00:00 ago on Thu 23 Aug 2018 07:38:40 AM
UTC.
Error:
 Problem: conflicting requests
  - package curl-dev-7.61.0-r0.armv5e does not have a compatible
architecture

(The full log is attached)

I'm new to yocto and I have no clue how to proceed to fix the problem. I
haven't found anything relevant in the official documentation or on the
internet.

Thanks

Gabriele
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