title: Library not loaded: /opt/local/lib/libffi.5.dylib but I'm using homebrew
body: <p>I'm trying to run guard on Mac OS X Lion(XCode 4.3+OSX GCC Installer+Homebrew)</p>
  
  <p>Error message: </p>
  
  <pre><code>Library not loaded: /opt/local/lib/libffi.5.dylib
  </code></pre>
  
  <p>I have no <code>/opt/local</code> directory since I'm not using MacPorts but Homebrew</p>
  
  <p>I tried <code>brew install libffi</code>, which was successful, but the gem still doesn't work.</p>
  
  <p>I also have tried uninstalling and reinstalling the gem without success.</p>
  
  <p>Problem is also occurring on OSX 10.9 (Mavericks) with <code>apple-gcc42</code> installed.</p>
  
  <p>I have also tried telling <code>gem</code> about the presence of libffi as follows:</p>
  
  <p><code>gem install ffi:1.0.7 -- --with-ldflags='-L/usr/local/opt/libffi/lib'</code></p>