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

Chuanqi Xu wrote:

But another concern is, given boost (or any other library) should be accepted by other compilers and older clang. Then how could we put `export` in the sources directly? Didn’t we have to use yet another macro to handle this?

That's a good point, yes. Since in pre-20 mode we have to remove the `export` anyway, there's perhaps not much point in having ignorable `export`. Or... maybe there still is, because we could at least use a single Config macro BOOST_CXX20_EXPORT, instead of separate ones per library.