#! /usr/bin/env bash
set -e

brewdir="$(brew --prefix)"
formula="${brewdir}/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/gcc.rb"

if [ ! -f "$formula" ]; then
  echo "ERROR: ${formula} does not exist." 1>&2
  exit 1
fi

cp "$formula" ./Formula/

patch -f -p1 -i ./Formula/gcc.rb.patch
brew install ./Formula/gcc.rb --build-from-source --force