gcc (Xcode Tools 2.2.1)

$ gcc -v
Using built-in specs.
Target: i686-apple-darwin8
Configured with: /private/var/tmp/gcc/gcc-5250.obj~12/src/configure --disable-checking -enable-werror --prefix=/usr --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-transform-name=/^[cg][^.-]*$/s/$/-4.0/ --with-gxx-include-dir=/include/c++/4.0.0 --build=powerpc-apple-darwin8 --with-arch=pentium-m --with-tune=prescott --program-prefix= --host=i686-apple-darwin8 --target=i686-apple-darwin8
Thread model: posix
gcc version 4.0.1 (Apple Computer, Inc. build 5250)
$ gcc-3.3 -v
Using built-in specs.
Thread model: posix
gcc version 3.3 20030304 (Apple Computer, Inc. build 1819)
$ gcc_select
Current default compiler:
gcc version 4.0.1 (Apple Computer, Inc. build 5250)