We are often asked about pre-compiled versions of GCC. While we cannot provide these for all platforms, below you'll find links to binaries for various platforms where creating them by yourself is not easy due to various reasons.
Please note that we did not create these binaries, nor do we support them. If you have any problems installing them, please contact their makers.
In addition to those specific offerings, you can get a binary distribution CD-ROM from the Free Software Foundation. It contains binaries for a number of platforms, and includes not only GCC, but other stuff as well. The current CD does not contain the latest version of GCC, but it should allow bootstrapping the compiler. An updated version of that disk is in the works.