Hi Andreas ! I've tried to run the statechart examples and tests with gcc 4.0 using Boost.Build V2. The attached patch corrects some minor glitches: The examples don't run from the "run" directory because gcc's -rpath option is not used when using shared libraries. This is enabled by <hardcode-dll-paths>true The test Jamfile produces *tons* of warnings because -Wno--non-virtual-dtor is not set and detail/rtti_policy has an (empty) virtual function named "dummy" but no virtual destructor. I simply disabled this warning, but I'm not happy about it. It has been helpful in my own code in the past. Is there any chance to make the destructor virtual when a vtable is needed ? Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! Ingenieurgesellschaft für * voice: ++49 511 262926 57 ! Verkehrs- und Eisenbahnwesen mbH * fax : ++49 511 262926 99 ! Lister Straße 15 * hunold@ive-mbh.de ! www.ive-mbh.de