title: Undefined symbols for architecture armv7
body: <p>This problem has been driving me crazy, and I can't work out how to fix it...</p>
  
  <pre><code>    Undefined symbols for architecture armv7:
    "_deflateEnd", referenced from:
        -[ASIDataCompressor closeStream] in ASIDataCompressor.o
    "_OBJC_CLASS_$_ASIDataDecompressor", referenced from:
        objc-class-ref in ASIHTTPRequest.o
    "_deflate", referenced from:
        -[ASIDataCompressor compressBytes:length:error:shouldFinish:] in ASIDataCompressor.o
    "_deflateInit2_", referenced from:
        -[ASIDataCompressor setupStream] in ASIDataCompressor.o
  ld: symbol(s) not found for architecture armv7
  collect2: ld returned 1 exit status
  Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1
  </code></pre>
  
  <p>I think it has to do with:</p>
  
  <pre><code>ld: symbol(s) not found for architecture armv7
  </code></pre>
  
  <p>But I have added: <code>libz.1.2.3.dylib</code> and it's not helping, anyone got any ideas?</p>