[OE-core] Incorporating deploy artefacts from one multiconfig in another multiconfig

Burton, Ross ross.burton at intel.com
Thu Feb 21 15:44:13 UTC 2019

So I'd like to use multiconfig for a fairly typical host/container use
case.  I've a class which can be used to build packages from images in
a fairly simple manner, essential just taking files from DEPLOY_DIR
when creating a package:

do_install[depends] += "core-image-minimal:do_image_complete
do_install () {
    install -d ${D}/var/lib/machines/
    install ${DEPLOY_DIR_IMAGE}/core-image-minimal-${MACHINE}.ext4

This part works fine, but the problem is straddling multiconfig boundaries...

I can't just add "core-image-minimal-package" to IMAGE_INSTALL because
it will build that for the current configuration.  I can't just add
"multiconfig:uos:core-image-minimal-package" because that will look
for a recipe with that name.  I've a rather ugly hack to call opkg
directly in a post-rootfs hook which sort of works.  Linking in bits
of the other configuration's deploy directory in a pre-rootfs hook and
extending IMAGE_INSTALL there almost works, apart from the rootfs code
then looks at the task dependencies to generate a pruned deploy dir,
which is missing the pieces I linked in.

I suspect this is now breaking new ground: the multiconfiguration
support lets you do builds but so far the artefact sharing hasn't
really been explored.  Has anyone dug further into this?


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