Re: [PATCH] lttng-tools: not rrecommend on lttng-modules

Richard Purdie
2026-03-18T07:37:28Z

On Mon, 2026-03-02 at 14:40 +0800, kai.kang@windriver.com wrote:
> From: Kai Kang <kai.kang@windriver.com>
>
> As in the lttng manual [1]:
>
>   Most distributions mark the LTTng-modules and LTTng-UST packages as
>   optional when installing LTTng-tools (which is always required). In
>   the following sections, we always provide the steps to install all
>   three, but note that:
>
>   * You only need to install LTTng-modules if you intend to use the
>     Linux kernel LTTng tracer.
>   * You only need to install LTTng-UST if you intend to use the user
>     space LTTng tracer.
>
> there should be no force dependency between lttng-tools and
> lttng-modules. When set lttng-modules in RRECOMMENDS, it always
> forces
> to build lttng-modules whether it is required or not.
>
> Compare to rpm spec [2] and debian conf [3], there are no any
> dependency
> between them too.
>
> So remove the RRECOMMENDS setting.
>
> [1]: https://lttng.org/docs/v2.14/#doc-installing-lttng
> [2]:
> https://rpmfind.net/linux/RPM/fedora/updates/testing/43/aarch64/Packages/l/lttng-tools-2.14.0-4.fc43.aarch64.html
> [3]: https://packages.debian.org/trixie/lttng-tools
>
> Signed-off-by: Kai Kang <kai.kang@windriver.com>

The removal of the dependency probably makes sense but we need to add
lttng-modules to packagegroup-core-tools-profile instead.

Cheers,

Richard