It seems that Boost.FileSystem does not implement some methods accepting
wpath arguments when compiled with GCC 3.4.3 on Linux. This occurs because BOOST_FILESYSTEM_NARROW_ONLY is defined, which according to the comment in the code occurs for "badly broken compilers or libraries".
Something is amiss. IIRC, BOOST_FILESYSTEM_NARROW_ONLY should only be defined for GCC on Windows/Cygwin, which doesn't have wide character support. Don't all modern versions of GCC on Linux support wide characters?
Could you please check to see if BOOST_FILESYSTEM_NARROW_ONLY really is being defined?
Well, after a bit more investigation, it seems that the boost::filesystem::detail::copy_file_api(const std::wstring & from, const std::wstring & to) is not only behind BOOST_FILESYSTEM_NARROW_ONLY, but is also behind BOOST_WINDOWS_API, so it is explicitly only available on Windows. So I was incorrect, BOOST_FILESYSTEM_NARROW_ONLY is not defined for GCC 3.4.3, as I do get the wide character path manipulation methods. However, it is that Windows API define that prevents the above copy_file_api definition from being used. Josh -- Rejoice always. Pray without ceasing. In all circumstances give thanks, for this is the will of God for you in Christ Jesus. -- 1 Thes. 5:16-18 NAB -- I am the living bread that came down from heaven; whoever eats this bread will live forever; and the bread that I will give is my flesh for the life of the world. -- John 6:51 NAB