Hello everybody, I'm a relatively new user of boost and I have a problem. I believe I know what is causing the problem but I don't yet have a solution and I am looking for suggestions. I'm currently porting a product to Mac OSX. It makes use of both stlport and boost. I have got the software compiling happily enough but I have a couple of link errors that have stumped me for a bit. I believe the link problems are caused by the fact that boost was compiled using the stdlib included with gcc and the code in the product is using stlport. The boost methods causing problems both have stl strings in their arguments. The exact link errors I get is: 1. "boost::filesystem::detail::dir_itr_first(void*&, void*&, stlpmtx_std::basic_string const&, stlpmtx_std::basic_string&, boost::filesystem::file_status&, boost::filesystem::file_status&)" 2. "boost::filesystem::detail::status_api(stlpmtx_std::basic_string const&, boost::system::error_code&)" As you can see the linker is looking for methods that are using stlpmtx_std::basic_string ... i.e. the stlport string The library libboost_filesystem-xgcc40-1_36.dylib as expected contains these basic methods (confirmed by "nm libboost_filesystem-xgcc40-1_36.dylib") but no doubt with std::string I'm using boost 1_36 if that makes any difference and am quite happy to test any assumptions if you don't trust mine. TIA Chris K. http://www.coresoftware.net.au http://www.krugerheavyindustries.com