brew/Library/Homebrew/os/mac/ld64_dependency.rb

require "dependency"

# This special dependency ensures that the Tigerbrew ld64
# formula is used as gcc's ld in place of the old version
# that comes with the OS.
class LD64Dependency < Dependency
  def initialize(name = "ld64", tags = [:build], env_proc = nil)
    super
    @env_proc = proc { ENV.ld64 }
  end
end