title: Undefined symbols for architecture armv6 in Jailbreak Tweak
body: <p>I followed this tutorial and the source code : <a href="http://blog.objectgraph.com/index.php/2010/04/20/encrypting-decrypting-base64-encode-decode-in-iphone-objective-c/" rel="nofollow">http://blog.objectgraph.com/index.php/2010/04/20/encrypting-decrypting-base64-encode-decode-in-iphone-objective-c/</a></p>
  
  <p>And then, I downloaded the "Sample Code : CryptTest" from the tutorial, it works perfectly in my Xcode 4.2. (With iOS SDK 4.2)</p>
  
  <p>But when I want to add these source code to my iOS jailbreak tweak, the terminal always shows this error</p>
  
  <pre><code>Undefined symbols for architecture armv6:
  "_OBJC_CLASS_$_Base64", referenced from:
  objc-class-ref in Tweak.xm.o
  ld: symbol(s) not found for architecture armv6
  </code></pre>
  
  <p>This is my source code, can anyone check whether I made some mistakes?
  <a href="http://dl.dropbox.com/u/809728/base64.zip" rel="nofollow">http://dl.dropbox.com/u/809728/base64.zip</a></p>
  
  <p>(In my source code, I make AES encrypt start to work when a "q" key of QWERTY keyboard shows in iPhone)</p>