I've just tried to start using the minimal test facility. Unfortunately it fails to compile, and there's no way I can fix that without radically changing my build configuration. My code has #include "boost/test/minimal.hpp" in it; my include path includes a directory which has a boost directory within it containing all the boost headers, so this works fine. But minimal.hpp includes the line #include <libs/test/src/execution_monitor.cpp> which fails to compile - because my include path doesn't have a directory with the boost libs directory in it. And nor should it. This is unfortunate, and arguably a violation of the header policy (libs as a sub-directory name is highly likely to clash with other libraries, unlike boost). Header files should not be including implementation files. This is especially the case with the minimal test facility, whose whole point is to be usable without requiring linking with implementation files. Changing to textual inclusion of implementation files is not a great improvement. Could the necessary implementation detail not be moved into some header files, which can then be included as necessary by both the cpp files and minimal.hpp? (Note that this is not a new issue - see also http://lists.boost.org/MailArchives/boost/msg05435.php) - Alan