Mandriva live-cd was not meant for development. Either install it on your disk and use rpmdrake to install the remaining required software or use a live-cd meant for development - it will have the tools already installed.

As for gcc C++ development, you need at least those packages installed (and of course their dependencies):
  • libgcc1
  • gcc
  • gcc-cpp
  • gcc-c++


Running "urpmi gcc-c++ glibc-devel libstdc++-devel" should install all the required software, provided that urpmi is configured properly.