Problem building Boost 1.33 .0 under Cygwin

Hi, I am having a problem building Boost 1.33.0 using gcc under the current version of Cygwin. The build aborts after displaying the following messages: Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). unknown target type for <@boost!libs!test!build>libboost_prg_exec_monitor.dll Could anyone tell me what I am missing? Version 1.32.0 built on my machine with no problems. Thanks, Carus V. (Bud) Clarke carus.v.clarke@boeing.com