Re: [review] The review of boost::container::hub starts! April 16 - April 26

On 19 Apr 2026 22:34, Christian Mazakas via Boost wrote:
> On Wed, Apr 15, 2026 at 3:48 PM Ion Gaztañaga via Boost <
> [email protected]> wrote:
> 
>> Dear users and members of Boost,
>>
>> I'm proud to announce that the formal review of Joaquín M López Muñoz's
>> boost::container::hub container, for inclusion in the Boost.Container
>> library, starts today ( in my timezone ;-) ), April 16, and runs through
>> April 26.
>>
> 
> I'm not sure if we've already had this discussion or not but I'd actually
> suggest considering putting Hub either in its own library or one that's
> unconditionally header-only.
> 
> My concern here is that if we put Hub into Container, people looking for
> Hub and using CMake will wind up using Boost::container which I fear
> transitively carries a binary dependency.
> 
> I would suppose users can instead depend on the header-only meta-target
> (Boost::headers) but I'd prefer to avoid a situation where users must do
> that.
This is solved by adding a new target to Boost.Container CMakeLists.txt,
e.g. `Boost::container_header_only` for the header-only bits. I would
argue, this would be useful regardless of `hub` being part of
Boost.Container. Some other libraries already provide more lightweight
targets where a full dependency would be too expensive for users.

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