I just downloaded boost to my machine from sourceforge (using the cvs access) and I am facing some problems in running jam. It appears that the version of ftjam sources i have with me (downloaded from the vault) does not support "SUBST" as a built-in rule , for when I execute

It runs into a loop while spewing out the error message saying SUBST is undefined.

If FTJam sources have been updated where can I find them?or am I missing something?