require 'formula' class Libpng < Formula homepage 'http://www.libpng.org/pub/png/libpng.html' url 'http://downloads.sf.net/project/libpng/libpng15/older-releases/1.5.14/libpng-1.5.14.tar.gz' sha1 '67f20d69564a4a50204cb924deab029f11ad2d3c' keg_only :provided_pre_mountain_lion option :universal bottle do sha1 '5e7feb640d654df0c2ac072d86e46ce9df9eaeee' => :mountain_lion sha1 'bbd94d671653943cf21314911978d90f5fb536df' => :lion sha1 'fb685cfb8b37b883bf004ee7c9ca785d3435b155' => :snow_leopard end def install ENV.universal_binary if build.universal? system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}" system "make install" end end