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

From: Peter Dimov (pdimov_at_[hidden])
Date: 2024-12-22 16:30:58

Ruben Perez wrote:
> On Sun, 22 Dec 2024, 17:10 Peter Dimov, <pdimov_at_[hidden]
> <mailto:pdimov_at_[hidden]> > wrote:
> 
> 	Regarding
> 
> 	  boost_set_cxx20_module_settings(boost_assert)
> 
> 	You can't rely on this function being available in a library's
> CMakeLists.txt
> 	file. Libraries (except those by Andrey) can be used without the
> superproject.
> 
> 
> 
> My assumption here was "modules only work with the superproject, either via
> add_subdirectory or via install + find_package". I was likely too naive, and the
> restriction should probably be lifted. How about providing the function in a
> helper cmake script which must be included by code using modules? We can
> always copy-paste the settings, but it can be a little bit of a mess.

At some point, once this stabilizes, we'll probably put it in the
`boostdep --cmake` output. But I agree that while developing it's more
convenient to only have to change it in one place.