Thanks John,
__STL_DEBUG - the debug build of your app will need to be as well in order to link against them.
I found that _STLP_DEBUG is defined when boost is build. I tried to add this definition, but it caused other compilation errors in my DLL. My DLL is part of a system that uses stlport without this flag, thus this setting might not be trivial for me... Another thing - my release build also is refusing to link with the next error: UnsignedAnalysis.obj : error LNK2001: unresolved external symbol "void __fastcall boost::re_detail::raise_runtime_error(class _STL::runtime_error const &)" (?raise_runtime_error@re_detail@boost@@YIXABVruntime_error@_STL@@@Z) \Path/MyDll.dll : fatal error LNK1120: 1 unresolved externals Error executing link.exe. So maybe this linking problem is not only related to _STLP_DEBUG (?) Questions: o Is there a way I can UN-DEFINE this flag for the boost debug build (maybe in user.hpp?) o Is there a list of all the settings/definition I need to set in my application in order to link with boost? Thanks again - Paz _________________________________________________________________ Dont just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/