#include <boost/filesystem/convenience.hpp> int main(void) { return 0; } When compiling the above code with gcc 4.1 and define BOOST_FILESYSTEM_NO_DEPRECATED I obtain these error messages: boost/filesystem/convenience.hpp: In function 'std::string boost::filesystem::extension(const boost::filesystem::path&)': boost/filesystem/convenience.hpp:98: error: expected primary-expression before '>' token boost/filesystem/convenience.hpp: In function 'std::wstring boost::filesystem::extension(const boost::filesystem::wpath&)': boost/filesystem/convenience.hpp:100: error: expected primary-expression before '>' token boost/filesystem/convenience.hpp: In function 'std::string boost::filesystem::basename(const boost::filesystem::path&)': boost/filesystem/convenience.hpp:103: error: expected primary-expression before '>' token boost/filesystem/convenience.hpp: In function 'std::wstring boost::filesystem::basename(const boost::filesystem::wpath&)': boost/filesystem/convenience.hpp:105: error: expected primary-expression before '>' token boost/filesystem/convenience.hpp: In function 'boost::filesystem::path boost::filesystem::change_extension(const boost::filesystem::path&, const std::string&)': boost/filesystem/convenience.hpp:108: error: expected primary-expression before '>' token boost/filesystem/convenience.hpp:108: warning: left-hand operand of comma has no effect boost/filesystem/convenience.hpp: In function 'boost::filesystem::wpath boost::filesystem::change_extension(const boost::filesystem::wpath&, const std::wstring&)': boost/filesystem/convenience.hpp:110: error: expected primary-expression before '>' token boost/filesystem/convenience.hpp:110: warning: left-hand operand of comma has no effect boost/system/error_code.hpp: At global scope: It works, when compiled without BOOST_FILESYSTEM_NO_DEPRECATED. The problem seems to be a new #ifndef in convenience.hpp that did not exist in 1.35.0. Regards, Peter. Peter Klotz Software Engineer Phone: +43 (0) 50 8648-4100 Fax: +43 (0) 50 8648-4111 E-Mail: peter.klotz@ith-icoserve.com ---------------------------------------------------------------- ITH icoserve technology for healthcare GmbH A-6020 Innsbruck, Innrain 98 www.ith-icoserve.com Rechtsform: Gesellschaft mit beschränkter Haftung Firmensitz: 6020 Innsbruck, Innrain 98 Firmenbuchnummer: FN 174117f Firmenbuchgericht: Innsbruck DVR: 0983039