GCC is distributed via FTP tarballs compressed with gzip or bzip2. It is possible to download a full distribution or specific components.
The full distribution includes the C, C++, Objective-C, Fortran, Java, and Chill compilers. The full distribution also includes runtime libraries for C++, Objective-C and Fortran. In the future the GNU compiler testsuites will be included in the full distribution.
If you choose to download specific components, you must download the core gcc distribution plus any language specific distributions you wish to use. The core distribution includes the C language front-end as well as the shared componenets. Each language has a tarball which includes the language front-end as well as the language runtime (when appropriate).
Unpack the core distribution as well as any language specific distributions in the same directory.
XXX FSF mirror sites
FTP download from egcs.cygnus.com (USA California)
FTP download from go.cygnus.com (USA California -- High speed link provided by Stanford)
GCC releases are available on many FTP mirror sites. If possible, please use one of these.