title: Apple Mach-O Linker Errors (20) - Undefined symbols for architecture armv7
body: <p>I received these errors after I added " -all_load " in the "Other Linker Flags" build setting once I added "libPusher-combined.a" and its header files. I followed the <a href="https://github.com/lukeredpath/libPusher/wiki/Adding-libPusher-to-your-project">instructions</a> exactly up to the part of typing in "-all_load" (under "Using a pre-compiled static library" in the "Adding to your iOS Project", but I ended up getting 20 Mach-O Linker errors. :/ Could anyone please help me with this?</p>
  
  <p>Here are the errors:</p>
  
  <pre><code>Undefined symbols for architecture armv7:
   "_utf8_nextCharSafeBody", referenced from:
    -[SRWebSocket _pumpScanner] in libPusher-combined.a(SRWebSocket.o)
   "_SCError", referenced from:
    -[Reachability startNotifier] in libPusher-combined.a(Reachability.o)
   "_utf8_countTrailBytes", referenced from:
    -[SRWebSocket _pumpScanner] in libPusher-combined.a(SRWebSocket.o)
   "_SCNetworkReachabilitySetDispatchQueue", referenced from:
    -[Reachability startNotifier] in libPusher-combined.a(Reachability.o)
    -[Reachability stopNotifier] in libPusher-combined.a(Reachability.o)
   "_kCFHTTPVersion1_1", referenced from:
    -[SRWebSocket didConnect] in libPusher-combined.a(SRWebSocket.o)
  "_CFHTTPMessageIsHeaderComplete", referenced from:
    ___30-[SRWebSocket _readHTTPHeader]_block_invoke_0 in libPusher-combined.a(SRWebSocket.o)
   "_CFHTTPMessageCreateRequest", referenced from:
    -[SRWebSocket didConnect] in libPusher-combined.a(SRWebSocket.o)
   "_SCNetworkReachabilityCreateWithAddress", referenced from:
    +[Reachability reachabilityWithAddress:] in libPusher-combined.a(Reachability.o)
   "_SCErrorString", referenced from:
    -[Reachability startNotifier] in libPusher-combined.a(Reachability.o)
   "_SCNetworkReachabilityCreateWithName", referenced from:
    +[Reachability reachabilityWithHostname:] in libPusher-combined.a(Reachability.o)
   "_CFHTTPMessageCopyAllHeaderFields", referenced from:
    ___30-[SRWebSocket _readHTTPHeader]_block_invoke_0 in libPusher-combined.a(SRWebSocket.o)
   "_CFHTTPMessageGetResponseStatusCode", referenced from:
    -[SRWebSocket _HTTPHeadersDidFinish] in libPusher-combined.a(SRWebSocket.o)
   "_CFHTTPMessageSetHeaderFieldValue", referenced from:
    -[SRWebSocket didConnect] in libPusher-combined.a(SRWebSocket.o)
    ___25-[SRWebSocket didConnect]_block_invoke_0 in libPusher-combined.a(SRWebSocket.o)
   "_CFHTTPMessageCreateEmpty", referenced from:
    -[SRWebSocket _readHTTPHeader] in libPusher-combined.a(SRWebSocket.o)
   "_CFHTTPMessageCopySerializedMessage", referenced from:
    -[SRWebSocket didConnect] in libPusher-combined.a(SRWebSocket.o)
   "_SCNetworkReachabilitySetCallback", referenced from:
    -[Reachability startNotifier] in libPusher-combined.a(Reachability.o)
    -[Reachability stopNotifier] in libPusher-combined.a(Reachability.o)
   "_SCNetworkReachabilityGetFlags", referenced from:
    -[Reachability isReachable] in libPusher-combined.a(Reachability.o)
    -[Reachability isReachableViaWWAN] in libPusher-combined.a(Reachability.o)
    -[Reachability isReachableViaWiFi] in libPusher-combined.a(Reachability.o)
    -[Reachability connectionRequired] in libPusher-combined.a(Reachability.o)
    -[Reachability isConnectionOnDemand] in libPusher-combined.a(Reachability.o)
    -[Reachability isInterventionRequired] in libPusher-combined.a(Reachability.o)
    -[Reachability reachabilityFlags] in libPusher-combined.a(Reachability.o)
    ...
   "_CFHTTPMessageCopyHeaderFieldValue", referenced from:
    -[SRWebSocket _checkHandshake:] in libPusher-combined.a(SRWebSocket.o)
   "_CFHTTPMessageAppendBytes", referenced from:
    ___30-[SRWebSocket _readHTTPHeader]_block_invoke_0 in libPusher-combined.a(SRWebSocket.o)
  ld: symbol(s) not found for architecture armv7
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>If you need more information, just ask. I hope that I'm not giving too much trouble. Thanks in advance.</p>