Just in case anyone's interested: I've been struggling to reconcile the problem whereby including a header from boost/serialization/* provokes the autolinking code to request that one of the serialization libraries be included in the link. The problem is that this library is requested even though there are no pending undefined symbols. So what works fine without autolinking - no missng symbols so the serialization*.lib is not needed fails with autolinking where the library is requested even though it contains no undefined symbols. This shouldn't add any code but it is a pain in the neck to require a library when it is really not needed. I'm still working on this - but it turns out harder than it looks for reasons that are too tedious to go into here. Robert Ramey