Carbide.c++ is not a compiler. it is an eclipse-based development tool supporting development for the Symbian OS (S60, Series 80 and UIQ). the compiler that is used is a symbian/nokia hack of the gcc 2.95 (there was some talk about moving to gcc 3.0, perhaps this has been done). these gcc versions (6-8 years old) do not have a c++98 standard library; they do not even have the std namespace. they are more or less on par with vc++ 6.0 as far as standard conformance goes, and would not be dramatically different from turbo c++ (95 release).
if you are familiar with visual studio 2003, you could consider using Carbide.vs which gives the same kind of functionality that Carbide.c++ gives via a visual studio plugin. it will definitely perform better than eclipse (which is feature rich; but is also an archetypical java pig).