[yocto] Fetching Yocto layers

[Beth Flanagan]

On Mon, Sep 2, 2019 at 2:05 PM Brian Silverman <bri at readysetstem.com> wrote:
>
> Is there a way to automatically fetch/add a yocto layer from another layer?
>
> My problem is that I’d like to be able to build instructions of my product from one version number.  But here’s our normal (example) build instructions:
>
> git clone git://git.yoctoproject.org/poky -b some_poky_tag
>
> cd poky
> git clone git://git.somelayer1.com/meta-layer1 -b some_layer1_tag
>
> git clone git://git.somelayer2.com/meta-layer2 -b some_layer2_tag
>
> git clone git://git.mylayer.com/meta-mylayer -b some_mylayer_tag
>
> source ./oe-init-build-env
> bitbake-layers add-layer ../meta-layer1
> bitbake-layers add-layer ../meta-layer2
> bitbake-layers add-layer ../meta-mylayer
>
> bitbake mylayer-image
>
>
> The tags chosen above are based on what we test and ship.  So my issue is that someone has to correctly follow the above instructions for different versions of multiple layers if they want a reproducible build of a specific version of mylayer-image.
>
> Is there a canonical why to encode this information within my layer?  Obviously I could script the above, store it in my layer, and have the user run that script.  But, that seems very unyocto-like.

There is combo-layer. I've used it before and for certain applications
it's useful.

https://wiki.yoctoproject.org/wiki/Combo-layer

http://git.yoctoproject.org/cgit.cgi/poky-config/tree/

-b

>
> --
>
> Brian Silverman
>
> Ready Set STEM
>
> bri at readysetstem.com
>
>
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