[boost] [multiprecision][build] Massive unexplained failures in develop

Can anyone help me understand why just about every multiprecision test on every platform is failing with link errors, for example: http://www.boost.org/development/tests/develop/developer/output/teeks99-09d-... Note that it's complaining about a missing *object* file: I've checked, and the necessary source files are present in the repository, plus I've pulled those changes on to a virtual machine and everything builds fine locally. So there's something odd about the build when run from /status or what exactly? I'm hoping someone can spot something obvious here, or else the testers can tell me where the object file actually placed? Thanks, John.