Re: multi MACHINE build for same DISTRO_ARCH

[Jan Kiszka <jan.kiszka@siemens.com>]

On 01.07.19 16:41, 'Benedikt Niedermayr' via isar-users wrote:
> Hi guys,
> 
> before I send some patches to you I would like to discuss this a bit.
> 
> The problem is to run multi machine builds for the same DISTRO_ARCH.
> 
> We have for example a BSP layer which supports imx6, imx7 and imx8 
> architectures, and we like to be able to run
> 
> those builds within a single bitbake command:
> 
> 
> bitbake multiconfig:imx6-stretch:isar-image-base \
> 
>               multiconfig:imx7-stretch:isar-image-base \
> 
>               multiconfig:imx8-stretch:isar-image-base
> 
> 
> The build runs fine if DISTRO_ARCH differs between targets. But it does not run 
> successfully if only MACHINE differs and DISTRO_ARCH is the same.
> 
> 
> I think running multi machine build within one bitbake build folder makes a lot 
> of sense, especially when it comes to build time and CI.
> 
> I don't like it to create a new build folder for every MACHINE, although 
> everything (rootfs, buildchroot, etc.) stays almost the same among DISTRO_ARCHs.
> 
> 
> 
> Is anybody familiar with this behavior?
> 

You may want to study https://github.com/siemens/jailhouse-images for a working 
pattern. May not be the only possible one, but already that required some 
careful balancing.

Jan

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