GNU compiler collection
https://gcc.gnu.org/ Formula was removed
Last version was

Revision: 2

gcc@4.7 requires the following formulae to be installed:
gmp@4 4.3.2 GNU multiple precision arithmetic library
libmpc@0.8 0.8.1 C library for high precision complex numbers
mpfr@2 2.4.2 Multiple-precision floating-point computations C lib

Recent formula history

FX Coudert gcc@4.7: remove
FX Coudert gcc@4.7: remove head
ilovezfs Use “squiggly” heredocs.
FX Coudert gcc@4.7: Sierra is last supported macOS version
FX Coudert gcc@4.7: remove --without-multilib

Formula code at GitHub