Hell All again! In my project I user STL_PORT 4.5.3 compiled under Mingw32 3.3.1 , and mostly parts linked fine but in one my dll I user follows construction class _SHARED_BASE_EXPORT MyError : public std::exception and when I linked this DLL with stlport library tohether linker produced follows: ---------------------------------------------------------------------------- -------------------------------- Linking... \mingw\lib\libstdc++.a(eh_personality.o)(.data$_ZTISt9exception+0x0): multiple definition of `typeinfo for std::exception' C:\Projects\F1\platform\source\f1shared_base\Debug\f1error.o(.rdata$_ZTISt9e xception+0x0):C:\MinGWStudio\MinGW\include\stlport_include\stl\_string.h: first defined here \mingw\lib\libstdc++.a(eh_personality.o)(.text$_ZTSSt9exception+0x0): multiple definition of `typeinfo name for std::exception' C:\Projects\F1\platform\source\f1shared_base\Debug\f1error.o(.rdata$_ZTSSt9e xception+0x0):C:\MinGWStudio\MinGW\include\stlport_include\stl\_string.h: first defined here ---------------------------------------------------------------------------- -------------------------------- Is somebody has home problem in past ? Or can you gime me advise - where is can by problem ? Best Regards