hon-runtest</code> rule, you can ask it to launch your
    debugger for you by adding "--debugger=<i>debugger</i>" to your bjam
    command-line:
<pre>
bjam -sTOOLS=vc7.1 "--debugger=devenv /debugexe" test
bjam -sTOOLS=gcc -sPYTHON_LAUNCH=gdb test
</pre>
    It can also be extremely useful to add the <code>-d+2</code> option when
    you run your test, because Boost.Build will then show you the exact
    commands it uses to invoke it. This will invariably involve setting up
    PYTHONPATH and other importan