How do I show the verbose version number of gcc?

I know g++ --version

, but it only shows a very basic version number with no build id or build date. How can I get more information?

here: http://sourceforge.net/projects/mingwbuilds/files/host-windows/releases/4.7.2/64-bit/threads-posix/sjlj/ are 9 versions and they show the same information when its ask in this way.