A few comments & questions...

I am new to Jam and was going to use it for my a project of mine in c++ that I want to use on both Win32 & Linux (which uses boost, by the way).

Firstly, well done on an amazing rework of the jam system to allow complex multiple builds.

The approach that you have taken is a quite a change on top of the basic Jam system. Judging by some of the questions that occur on the list (multiple builds - dlls etc) it would be good if the whole system could be incorporated into jam. What does perforce think of this?

The current version of Jam only works with NT, not the other versions of Win32. (I am betting that quite a few boost users have Win98/95 installed). David Turner at www.freetype.org has made the necessary changes for it to work on the other Win32 platforms but has added some extra definitions as well. There seems to be some overlap here.

Lastly, why isn't allyourbase.jam just called Jamrules? This is the automatic toplevel that is read in without using the -f option. Or have I missed something here?

Brett