title: Linker command failed iOS
body: <p>I've just upadted my xCode to the latest version and I've downloaded the the sample projects from you can get from the guys making the Estimote iBeacons. However, when I try to build their sample project I get the following error:</p>
  
  <blockquote>
    <p>(null): Directory not found for option
    '-L"/Users/com/Desktop/iOS-SDK-master/NotificationDemo/../../../../../../Library/Developer/Xcode/DerivedData/EstimoteBLE-fciknfmtjexyisdvrlnpfgdjgsck/Build/Products/Debug-iphoneos"'</p>
    
    <p>(null): Directory not found for option
    '-L"/Users/soluis27mac/Desktop/iOS-SDK-master/NotificationDemo/../SDK"'</p>
    
    <p>(null): Directory not found for option
    '-L/Users/Gacek/Documents/Programowanie/iOS/Estimote/publicEstimoteSDK/iOS-SDK/SDK'</p>
    
    <p>(null): Library not found for -lEstimoteBLE</p>
    
    <p>(null): Linker command failed with exit code 1 (use -v to see
    invocation)</p>
  </blockquote>
  
  <p>I've googled around for this and a lot of it seems to tell me I need to do something with my build options. However, all of the things I have tried (<a href="http://jeffreysambells.com/2010/04/09/library-not-found-tip-for-iphone-developers" rel="nofollow">like this website for example</a>) still result in the same error. </p>
  
  <p>I have simply tried creating a new project and re-writing the code again following the the installation instructions they give. However, this results in more errors as such:</p>
  
  <blockquote>
    <p>(null): Ignoring file
    /Users/comp/Desktop/iOS-SDK-master/SDK/libEstimoteBLE.a,
    missing required architecture i386 in file
    /Users/comp/Desktop/iOS-SDK-master/SDK/libEstimoteBLE.a (2
    slices)</p>
    
    <p>(null): "_OBJC_CLASS_$_BeaconManager", referenced from:</p>
    
    <p>(null): Objc-class-ref in ViewController.o</p>
    
    <p>(null): Symbol(s) not found for architecture i386</p>
    
    <p>(null): Linker command failed with exit code 1 (use -v to see
    invocation)</p>
  </blockquote>
  
  <p>I know this can be a fairly common problem when downloading sample projects off the internet, but can anyone give some other suggestions as to what I can try to beat this error. I'm still fairly new to the world of iOS development and xCode. </p>