Evidently the only way to currently compile clang on Windows using the VC++ RTL is to compile without RTTI and exception handling in its VC++ emulation ( options -D_HAS_EXCEPTIONS=0 /GR- ). This may be totally unrealistic for Boost. Nonetheless with these compiler options, when the dinkumware.hpp is being used by Boost config, it is including typeinfo and this is causing a problem: c:\Program Files\Microsoft Visual Studio 10.0\VC\INCLUDE\typeinfo(156,10) : error: unknown class name 'exception'; did you mean '_exception'? : public exception Is it realistic in dinkumware.hpp to not include typeinfo if RTTI is not enabled ? Or is it just more realistic to say that compiling Boost libraries with RTTI disabled is not going to work ?