require 'formula' class Chicken < Formula homepage 'http://www.call-cc.org/' url 'http://code.call-cc.org/releases/4.8.0/chicken-4.8.0.4.tar.gz' sha1 '35fe59da04041a7b98d018e5ebb223d491ae57c4' head 'git://code.call-cc.org/chicken-core' def install ENV.deparallelize # Chicken uses a non-standard var. for this args = ["PREFIX=#{prefix}", "PLATFORM=macosx", "C_COMPILER=#{ENV.cc}"] args << "ARCH=x86-64" if MacOS.prefer_64_bit? system "make", *args system "make", "install", *args end end