Re: [docs] [PATCH 5/5] sdk-manual/intro.rst: detail differences between standard and extensible sysroots

Hi Antonin,

On 7/29/26 12:02 PM, Antonin Godard via lists.yoctoproject.org wrote:
> The sysroot in the standard and the extensible SDKs are managed
> differently. Detail this in the Sysroots section.
> 
> [YOCTO #14830]
> 
> Signed-off-by: Antonin Godard <[email protected]>
> ---
>   documentation/sdk-manual/intro.rst | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
> 
> diff --git a/documentation/sdk-manual/intro.rst b/documentation/sdk-manual/intro.rst
> index 8ccbcfa20..2e5f73f0b 100644
> --- a/documentation/sdk-manual/intro.rst
> +++ b/documentation/sdk-manual/intro.rst
> @@ -123,6 +123,21 @@ sysroot is based on the target root filesystem image that is built by
>   the OpenEmbedded build system and uses the same metadata configuration
>   used to build the cross-toolchain.
>   
> +However, the extensible and standard SDKs sysroot differ in content:
> +

Why did we stop referring to the Sysroot term (:term:`Sysroot`)?

> +-  The standard SDK sysroot only contains libraries and headers for the packages

s/for/of/?

I think we should also mention this brings the libraries and headers of 
their dependencies (recursively) as well?

> +   found in the :term:`TOOLCHAIN_TARGET_TASK` and :term:`TOOLCHAIN_HOST_TASK`
> +   definitions, for the target and native sysroots respectively.
> +

I know we have a nativesdk OVERRIDE, so is it still a native/target 
sysroot or should it be named nativesdk too (I've never built an SDK so 
I don't know).

> +   See :doc:`/sdk-manual/appendix-customizing-standard` to learn how to
> +   customize it.
> +
> +-  The extensible SDK sysroot is completely managed by the ``devtool``

Can we maybe point at some docs for devtool? From a quick grep, maybe 
something in documentation/ref-manual/devtool-reference.rst?

> +   command-line tool, and its content is the same as the sysroot of the image
> +   recipe for which the SDK was built.
> +

I guess we could show how to do this here?

I think it should be something like:

bitbake my-image -c populate_sdk

(or maybe point at 
https://docs.yoctoproject.org/sdk-manual/appendix-obtain.html#building-an-sdk-installer 
?).

> +   See :doc:`/sdk-manual/appendix-customizing` to learn how to customize it.
> +

Thinking about it, we probably should update 
documentation/ref-manual/terms.rst for the Sysroot entry in the glossary 
to explain sysroot for the SDKs (or at the very least point at the 
section here).

Cheers,
Quentin