Hi Matthias, On Mon, 26 Aug 2002, Matthias Kronenberger wrote: yg-boo> Could it be, that some BGL config file detects MSVC and concludes, yg-boo> that hash sets are not available in the MSVC stl?? Yes, for hash sets to work, BGL needs to create partial specializations for the hash template class. However, MSVC does not support partial specialization. I can't think of a straightforward workaround for this problem. Sorry. Regards, Jeremy ---------------------------------------------------------------------- Jeremy Siek http://php.indiana.edu/~jsiek/ Ph.D. Student, Indiana Univ. B'ton email: jsiek@osl.iu.edu C++ Booster (http://www.boost.org) office phone: (812) 855-3608 ----------------------------------------------------------------------