title: iOS - 2 duplicate symbols for architecture armv7
body: <p>I am using <a href="http://projects.lukeredpath.co.uk/resty/" rel="noreferrer">Resty</a> everywhere in my project, but now since I have to upload image to server, so I try to add another framework called <a href="http://restkit.org/" rel="noreferrer">RestKit</a> to handle file upload. But when I compiled, it got error:</p>
  
  <pre><code>duplicate symbol _NewBase64Decode in:
      /Users/iforests/Library/Developer/Xcode/DerivedData/Owlch-gnysrakcbhsgkubbjjjfbahlocqi/Build/Products/Debug-iphoneos/libRestKit.a(NSData+Base64.o)
      /Users/iforests/Documents/iOSworkspace/Owlch/LRResty.framework/LRResty(NSData+Base64.o)
  ld: 2 duplicate symbols for architecture armv7
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>Is there any way to solve this problem without removing LRResty (since tomorrow is the deadline of this project). Thank you all so much!</p>