Re: [yocto] Question about intended use cases for SDK install vs. sourcing build environment

Sourcing the env script installed by the SDK is a prerequisite of using 
the installed SDK.
This is the standard and tested workflow of using SDK.

Regards,
Qi

On 2/3/26 21:13, Maria Garcia via lists.yoctoproject.org wrote:
>
> Hello Yocto maintainers,
>
> I have a question regarding the intended use cases for installing the 
> SDK generated via |populate_sdk| versus sourcing the build environment 
> (e.g. environment-setup-cortexa72-cortexa53-oe-linux).
>
> While investigating a toolchain issue, we noticed that the set of 
> path-related environment variables added by installing the SDK differs 
> from the ones that are set when sourcing the build environment 
> directly (sourcing the build environment results in more path-related 
> environment variables).
>
> In our case, our team never sources the build environment and relies 
> entirely on the generated SDK. This difference in environment setup 
> actually caused us some friction when writing a CMake wrapper around 
> the libgpiod library. We found that the build would succeed when 
> sourcing the environment, but not when using only the SDK, unless we 
> provided additional hints via a custom |.cmake| file.
>
> This made us wonder what the intended division of responsibilities is 
> between these two workflows:
>
>  *
>
>     What use cases are expected to rely on sourcing the build environment?
>
>  *
>
>     What use cases are expected to rely purely on the installed SDK?
>
>  *
>
>     Are we making a mistake by not sourcing the environment every time?
>
> I’d appreciate any clarification on the design intent here, and 
> whether relying exclusively on the SDK is considered a fully supported 
> workflow for native/CMake-based development.
>
> Thanks in advance for your time and insights!
>
> Best regards,
>
>
> Delftechpark 22
>
> 2628 XH, Delft
>
> The Netherlands
>
> www.qblox.com<http://www.qblox.com>
>
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