Re: Interest for C++20 modules support of boost officially

From: Ruben Perez (rubenperez038_at_[hidden])
Date: 2025-01-13 07:11:37

>
>
>
> In the general case (when a header also defines macros), the public
> header will contain both
>
> import boost.mp11;
>
> and the part that defines the macros, which in Mp11's case is
>
> #include <boost/mp11/version.hpp>
>
> User code wouldn't need to know that in addition to the import,
> it also needs to include a separate macro header.
>

This assumes that macros are "standalone" and don't require including any
stdlib headers. This is the case for mp11/version.hpp and lightweight test,
but is not for Boost.Config or Boost.Charconv headers, for instance. These
may require including <cstddef> or <cstdint> for macros, which need to
happen before any import std. Wouldn't this cause trouble with your scheme?

Thanks,
Rubén.