require 'formula' class Ungif < Formula url 'http://sourceforge.net/projects/giflib/files/libungif%204.x/libungif-4.1.4/libungif-4.1.4.tar.bz2' md5 '76865bc1bed90ecb5992a1edcc4d6c15' homepage 'http://sourceforge.net/projects/giflib/' def install ENV.j1 system "./configure", "--prefix=#{prefix}" system "make all" system "make install" end end