Earlier quoted context omitted.
Are you saying that the gcc no longer ships with Xcode, or that it, for some reason, moved the gcc binary to a different directory (or both)? If the gcc no longer comes with Xcode, how might one get gcc for OSX Lion?
They just removed GCC 4.0. GCC 4.2.1 is avaiable as /usr/bin/gcc-4.2, and /usr/bin/gcc is actually LLVM-GCC 4.2
edit: you actually have to run the xcode installer