smoke:> brew tap homebrew/versions
Cloning into '/usr/local/Library/Taps/homebrew-versions'...
remote: Counting objects: 763, done.
remote: Compressing objects: 100% (323/323), done.
remote: Total 763 (delta 467), reused 729 (delta 440)
Receiving objects: 100% (763/763), 150.88 KiB | 159 KiB/s, done.
Resolving deltas: 100% (467/467), done.
Tapped 74 formula

smoke:> brew info homebrew/versions/gcc48
gcc48: stable 4.8.0, HEAD
http://gcc.gnu.org
Depends on: gmp, libmpc, mpfr, cloog, isl
Not installed
https://github.com/homebrew/homebrew-versions/commits/master/gcc48.rb
==> Options
--enable-all-languages
	Enable all compilers and languages, except Ada
--enable-cxx
	Build the g++ compiler
--enable-fortran
	Build the gfortran compiler
--enable-java
	Buld the gcj compiler
--enable-multilib
	Build with multilib support
--enable-nls
	Build with native language support (localization)
--enable-objc
	Enable Objective-C language support
--enable-objcxx
	Enable Objective-C++ language support
--enable-profiled-build
	Make use of profile guided optimization when bootstrapping GCC