1) I checked out modular Boost as per https://svn.boost.org/trac/boost/wiki/TryModBoost 2) Changed libs/multiprecision to the develop branch also as per https://svn.boost.org/trac/boost/wiki/TryModBoost 3) Added some pending changes from the old SVN Trunk that I didn't commit before the changeover. 4) Ran the tests and everything failed, even though it was passing on SVN :-(
The issue was that the headers under boost/ were now *copies* of the last release and no longer pointers to the new "develop" code. Interestingly some of the hard links were updated when I ran bjam, but apparently not all :-(
On the "non-linked headers" thread there's discussion about using soft links instead of hard links, which will hopefully fix this.
I saw that. However, my Vista machine is apparently reporting that soft links are *not* supported :-( Of course it's about time it was junked in favour of something newer, but that's a whole other issue! John.