Hi, I'm trying to port some code from VC++6.0 to VC++7.1. It is a DLL library that uses Boost.Python (from 1.30.2) to expose its interface for Python. It compiled without problems on VC++6.0, now I get during linking: file2.obj : error LNK2005: "struct swallow_assign::boost::detail::swallow_assign boost::tuples::`anonymous namespace'::ignore" (?ignore@?A0x3ab6eb85@tuples@boost@@3Uswallow_assign@detail@23@A) already defined in file1.obj and later: file2.obj : warning LNK4006: "struct swallow_assign::boost::detail::swallow_assign boost::tuples::`anonymous namespace'::ignore" (?ignore@?A0x3ab6eb85@tuples@boost@@3Uswallow_assign@detail@23@A) already defined in file1.obj; second definition ignored I found here: http://mail.python.org/pipermail/c++-sig/2002-November/002693.html the suggestion to use the latest tuple_basic_no_partial_spec.hpp file. No luck. I understand that it is the last line in this file that is a cause of problems. We would like to avoid upgrading to 1.31 if 1.30.2 can make it. Any suggestion for workaround will be highly appreciated. -- Maciej Sobczak : http://www.msobczak.com/ Programming : http://www.msobczak.com/prog/