vbcc is outdated and not worth to use.
Maybe it generate fast code, but only because it suport very basic subset of C.
gcc crosscompiler - gcc 3.4.0 You may found at:
http://kas1e.mikendezign.com/zeroher...piler_os3.html
If You want to use c++ on amiga gcc is best choice.
Other c++ compilers are very old and outdated.