try getting and installing the latest version instead.. not that this will solve your problem, although possible, but you should always have the latest _stable_ version of any peice of software. also check the gcc site for 3rd party binaries, maybe, which are made for your distro.
or lastly, read fully the documentation, if not already. specifically, at least, about the configuration part: here
youll need a compiler to compile the compiler (lol, sorry for that).