require 'formula' class Exiv2 < Formula url 'http://www.exiv2.org/exiv2-0.21.1.tar.gz' homepage 'http://www.exiv2.org' md5 '5c99bbcaa998f6b200b92f2bf0ac4f9e' def install system "./configure", "--prefix=#{prefix}", "--disable-dependency-tracking" system "make install" end end