Hello. You wrote: burlbo> Then in user-config.jam (which is created from ./configure script or you can burlbo> create it by hand in the boost root directory) you enter the following: burlbo> # STLport configuration burlbo> using stlport : 5.1.3 : <STLport root>/stlport <STLport root>/lib ; Thanks a lot. It's realy work! There are following strings in the original user-config.jam: # Configure, specifying locatioh of both headers and libraries # using stlport : /usr/include/stlport : /usr/lib ; This sample settings confused me when I tried to build boost by myself and follow this ones. This sample is wrong... PS: If you want to build boost 1.34 with Microsoft Visual C++ compiler 7.1 it is nesessary to build STLPort with native wchar_t type support (/Zc:wchar_t options). Otherwise some libraries (filesystem, wave, date_time, regexp etc.) will not be built. -- Best regards Flex Ferrum