Now with these flags in the .pro file INCLUDEPATH +=C:\boost_1_49_0\boost_1_49_0 LIBS +=-LC:\boost_1_49_0\boost_1_49_0\stage\lib -lboost_thread-mgw44-mt-1_49 I get a linker error collect2:ld returned 1 exit status I have built boost thread with bjam --toolset=gccstage --with-thread and it has build a .a file in release and debug folders. What is preventing the linker? Thanks Jothy On Mon, Mar 5, 2012 at 2:14 PM, Igor R wrote:

...

I am using QtCreator. While building Ithe compiler always throw an "Instantiated from here" error. The error is from shared_mutex.hpp on line

state_data const current_state=interlocked_compare_exchange(&state,new_state,old_state);

What could be the problem?

"Instantiated from here" is not error, but just some point in the stack of template instantiations. What compliler error do you get? _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

-- Jothy