Homebrew/homebrew — pull request #28855 by mikemcquaid (2014-04-30 12:23:34+00:00)
Title: gcc: build gfortran by default.

Don't merge this yet; still work in progress.

This is the starting point to eventually replace the `gfortran` formula with `gcc` now it is in core. We'll still allow people to set their own Fortran compilers but default to our `gcc` formula if it hasn't been set.