Hi all. I have a question which is somewhat Boost-related and somewhat general. I've looked at the build system (i.e, Jam files) and noticed that most of time, the directories (include directories, link directories) are specified in absolute format - $(BOOST_ROOT)/whatever. However, not all of them are absolute. Some are relative - ../../../whatever. Other parts of the Boost tree, such as the html files, contain relative paths. My question is: shouldn't there be a uniform way - absolute or relative? And if so, what would it be? My opinion is that relative is superior, because is makes it possible to checkout several instances of the tree (several branches, or even several instances of head) to separate parts of the disk and work on all of them as needed, without mangling with environment variables. What I mean is that requiring to change environment variables is burdensome and errorprone (I can easily execute bjam from directory X, while BOOST_ROOT points to directory Y, which will create a disaster). What is your opinion regarding this in repect to Boost, and in respect to other projects in general? Many thanks for your time, Yuval