Re: [boost] Unconditional conditional building is cursed"

But the problem has nothing to do with silently not building libraries. It's caused by libraries assuming that Boost.Config is at ../config.

Both have the same root cause -- no way to turn off these build checks. If the checks are not needed there is no need to import Boost.Config and assume its location too. P.S. I do not understand how to reply in the Boost mailing lists, please do not blame me if the message went to the wrong thread, I expressed my frustration about that previously, Boost needs to upgrade its Mailman to v3.