require 'formula' class Nasm < Formula homepage 'http://www.nasm.us/' url 'http://www.nasm.us/pub/nasm/releasebuilds/2.10.03/nasm-2.10.03.tar.bz2' sha256 '3babec15086fed1d00495e7c412848fd135cad70faa811738cb35da46d98974c' option :universal def install ENV.universal_binary if build.universal? system "./configure", "--prefix=#{prefix}" system "make everything" system "make install_everything" end end