On Sun, 2025-04-13 at 06:38 +0000, Sun, Yi wrote:
> 
> 
> 
> Hi All,
>  
> I'm new to ISAR and was told it's an efficient project for building
> embedded OS images.
> I'm currently trying to create an Ubuntu Noble (24.04) image for the
> RISC-V architecture.
>  
> I gave it a quick try, but ran into some issues:
> Step 1: KAS_ALLOW_ROOT=yes ./kas/kas-container menu
> Step 2: KAS_ALLOW_ROOT=yes ./kas/kas-container build (or use the
> "Build" option from the menu)
>  
> I've attached my configuration files (generated by kas-container)
> along with the error log dumped by ISAR during the build process.
>  
> Another question I have is about the concepts of "target" and "host".
> After reading as much documentation on ISAR as I could find, I'm
> still a bit confused:
>  
> Why do we need a "host" rootfs/distro, given that ISAR runs inside
> the kas-isar Docker container, which I assume already acts as the
> host environment?
> What I’m aiming for with this project is to generate an image that
> can be run in QEMU or flashed to a disk — that would be the target
> distro, right?
>  
> Any guidance or suggestions would be greatly appreciated!
>  
> Thanks
>    --Sun, Yi
> 

Hello.

Currently we support (and test) only amd64/i386 and arm64/armhf
architectures for Ubuntu despite of the fact ubuntu has ports for
riscv64 ( http://ports.ubuntu.com/ubuntu-ports/dists/noble/ ).

For now, you could try attached patch for Isar to run ubuntu-noble
build for riscv64.

Also, you need to apply patches for u-boot and kernel from 
https://patchwork.isar-build.org/project/isar/list/?series=1551 - or
wait 2..3 days until they are merged to 'next' branch.

---

In general, we might need to add other architectures supported in
ubuntu-ports into our configs. Stay tuned.

>  
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-- 
Best regards,
Uladzimir.

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