Thanks for your reply. But I am just including the header files of the boost like muthex.hpp and not using the DLL. But even though itried by changing the setting to the Debug MT DLL" And I am getting warning "non dll-interface class 'boost::noncopyable' used as base for dll-interface class 'boost::mutex'" And at the end I get error fatal error LNK1104: cannot open file "boost_thread-vc6-mt-gd-1_31.lib" Sebastian Redl <sebastian.redl@getdesigned.at> wrote: Saurabh Ramya wrote:

I am getting error

"fatal error C1189: #error : "Mixing a dll boost library with a static runtime is a really bad idea..."

I am building a application which uses boost threads and mutexs using vc6. My runtime library is "Debug MultiThreaded".

please help to solve this issue?

This is really an issue for boost-users. Anyway, change your runtime library to "Debug Multithreaded DLL" and it should work. Don't forget to change the runtime to "Multithreaded DLL" in release mode. Sebastian Redl _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost --------------------------------- Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.