title: vtable error in iOS
body: <p>I have included my custom framework to a sample application made for phonegap for making a custom plugin.</p>
  
  <p>At compile time i am getting following error:</p>
  
  <p>Undefined symbols for architecture i386:</p>
  
  <p>"vtable for _<em>cxxabiv1::</em>_class_type_info", referenced from:
        typeinfo for z_stream_s in FrameworkName(zlibengn.o)</p>
  
  <p>NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.</p>
  
  <p>ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)</p>
  
  <p>What this error means? and, How we can resolve it?</p>