require 'formula' class Icoutils < Formula url 'http://savannah.nongnu.org/download/icoutils/icoutils-0.29.1.tar.bz2' homepage 'http://www.nongnu.org/icoutils/' md5 'b58f375e0f8731595e8d0ecdc3a0acb9' def install ENV.libpng system "./configure", "--disable-dependency-tracking", "--disable-rpath", "--prefix=#{prefix}" system "make install" end end