ASIHttpRequest编译不通过

Undefined symbols for architecture i386:
  "_CFHTTPAuthenticationIsValid", referenced from:
      -[ASIHTTPRequest attemptToApplyProxyCredentialsAndResume] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyCredentialsAndResume] in ASIHTTPRequest.o
  "_CFHTTPMessageApplyCredentialDictionary", referenced from:
      -[ASIHTTPRequest applyAuthorizationHeader] in ASIHTTPRequest.o
      -[ASIHTTPRequest applyAuthorizationHeader] in ASIHTTPRequest.o
      -[ASIHTTPRequest applyProxyCredentials:] in ASIHTTPRequest.o
      -[ASIHTTPRequest applyCredentials:] in ASIHTTPRequest.o
  "_CFHTTPMessageIsHeaderComplete", referenced from:
      -[ASIHTTPRequest readResponseHeaders] in ASIHTTPRequest.o
  "_kCFStreamPropertyHTTPSProxyPort", referenced from:
      _kCFStreamPropertyHTTPSProxyPort$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPSProxyPort$non_lazy_ptr)
  "_inflate", referenced from:
      +[ASIHTTPRequest uncompressZippedData:] in ASIHTTPRequest.o
      +[ASIHTTPRequest uncompressZippedDataFromSource:toDestination:] in ASIHTTPRequest.o
  "_kCFStreamSSLCertificates", referenced from:
      _kCFStreamSSLCertificates$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamSSLCertificates$non_lazy_ptr)
  "_CFNetworkCopyProxiesForAutoConfigurationScript", referenced from:
      +[ASIHTTPRequest proxiesForURL:fromPAC:] in ASIHTTPRequest.o
  "_kCFProxyTypeKey", referenced from:
      _kCFProxyTypeKey$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFProxyTypeKey$non_lazy_ptr)
  "_CFReadStreamCreateForStreamedHTTPRequest", referenced from:
      -[ASIHTTPRequest startRequest] in ASIHTTPRequest.o
      -[ASIHTTPRequest startRequest] in ASIHTTPRequest.o
  "_kCFProxyPortNumberKey", referenced from:
      _kCFProxyPortNumberKey$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFProxyPortNumberKey$non_lazy_ptr)
  "_kUTTagClassMIMEType", referenced from:
      _kUTTagClassMIMEType$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kUTTagClassMIMEType$non_lazy_ptr)
  "_inflateEnd", referenced from:
      +[ASIHTTPRequest uncompressZippedData:] in ASIHTTPRequest.o
      +[ASIHTTPRequest uncompressZippedDataFromSource:toDestination:] in ASIHTTPRequest.o
      +[ASIHTTPRequest uncompressZippedDataFromSource:toDestination:] in ASIHTTPRequest.o
      +[ASIHTTPRequest uncompressZippedDataFromSource:toDestination:] in ASIHTTPRequest.o
      +[ASIHTTPRequest uncompressZippedDataFromSource:toDestination:] in ASIHTTPRequest.o
  "_inflateInit2_", referenced from:
      +[ASIHTTPRequest uncompressZippedData:] in ASIHTTPRequest.o
      +[ASIHTTPRequest uncompressZippedDataFromSource:toDestination:] in ASIHTTPRequest.o
  "_kCFProxyAutoConfigurationURLKey", referenced from:
      _kCFProxyAutoConfigurationURLKey$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFProxyAutoConfigurationURLKey$non_lazy_ptr)
  "_CFHTTPAuthenticationRequiresUserNameAndPassword", referenced from:
      -[ASIHTTPRequest attemptToApplyProxyCredentialsAndResume] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyCredentialsAndResume] in ASIHTTPRequest.o
  "_kCFHTTPAuthenticationUsername", referenced from:
      _kCFHTTPAuthenticationUsername$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPAuthenticationUsername$non_lazy_ptr)
  "_kCFStreamPropertyHTTPProxy", referenced from:
      _kCFStreamPropertyHTTPProxy$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPProxyPort$non_lazy_ptr, _kCFStreamPropertyHTTPProxyHost$non_lazy_ptr , _kCFStreamPropertyHTTPProxy$non_lazy_ptr )
  "_kCFStreamPropertyHTTPResponseHeader", referenced from:
      _kCFStreamPropertyHTTPResponseHeader$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPResponseHeader$non_lazy_ptr)
  "_CFHTTPMessageGetResponseStatusCode", referenced from:
      -[ASIHTTPRequest readResponseHeaders] in ASIHTTPRequest.o
  "_kCFProxyTypeHTTP", referenced from:
      _kCFProxyTypeHTTP$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFProxyTypeHTTP$non_lazy_ptr)
  "_kCFHTTPAuthenticationSchemeBasic", referenced from:
      _kCFHTTPAuthenticationSchemeBasic$non_lazy_ptr in ASIAuthenticationDialog.o
      _kCFHTTPAuthenticationSchemeBasic$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPAuthenticationSchemeBasic$non_lazy_ptr)
  "_SCNetworkReachabilityScheduleWithRunLoop", referenced from:
      -[Reachability startNotifier] in Reachability.o
  "_SCNetworkReachabilityGetFlags", referenced from:
      -[Reachability currentReachabilityStatus] in Reachability.o
      -[Reachability isReachable] in Reachability.o
      -[Reachability isConnectionRequired] in Reachability.o
      -[Reachability isConnectionOnDemand] in Reachability.o
      -[Reachability isInterventionRequired] in Reachability.o
      -[Reachability isReachableViaWWAN] in Reachability.o
      -[Reachability isReachableViaWiFi] in Reachability.o
      -[Reachability reachabilityFlags] in Reachability.o
  "_deflateInit2_", referenced from:
      +[ASIHTTPRequest compressData:] in ASIHTTPRequest.o
      +[ASIHTTPRequest compressDataFromSource:toDestination:] in ASIHTTPRequest.o
  "_CFNetworkCopyProxiesForURL", referenced from:
      -[ASIHTTPRequest startRequest] in ASIHTTPRequest.o
      +[ASIHTTPRequest proxiesForURL:fromPAC:] in ASIHTTPRequest.o
  "_CFHTTPMessageSetHeaderFieldValue", referenced from:
      -[ASIHTTPRequest main] in ASIHTTPRequest.o
      -[ASIHTTPRequest checkRequestStatus] in ASIHTTPRequest.o
  "_kCFProxyTypeSOCKS", referenced from:
      _kCFProxyTypeSOCKS$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFProxyTypeSOCKS$non_lazy_ptr)
  "_kCFStreamPropertyHTTPAttemptPersistentConnection", referenced from:
      _kCFStreamPropertyHTTPAttemptPersistentConnection$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPAttemptPersistentConnection$non_lazy_ptr)
  "_CFHTTPMessageCopyVersion", referenced from:
      -[ASIHTTPRequest readResponseHeaders] in ASIHTTPRequest.o
  "_CFHTTPAuthenticationCopyRealm", referenced from:
      -[ASIHTTPRequest attemptToApplyProxyCredentialsAndResume] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyCredentialsAndResume] in ASIHTTPRequest.o
  "_CFHTTPMessageCopyAllHeaderFields", referenced from:
      -[ASIHTTPRequest readResponseHeaders] in ASIHTTPRequest.o
  "_CFHTTPMessageCreateRequest", referenced from:
      -[ASIHTTPRequest main] in ASIHTTPRequest.o
  "_kCFProxyHostNameKey", referenced from:
      _kCFProxyHostNameKey$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFProxyHostNameKey$non_lazy_ptr)
  "_kCFStreamPropertyHTTPProxyHost", referenced from:
      _kCFStreamPropertyHTTPProxyHost$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPProxyHost$non_lazy_ptr)
  "_CFHTTPMessageCopyResponseStatusLine", referenced from:
      -[ASIHTTPRequest readResponseHeaders] in ASIHTTPRequest.o
  "_kCFStreamPropertyHTTPRequestBytesWrittenCount", referenced from:
      _kCFStreamPropertyHTTPRequestBytesWrittenCount$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPRequestBytesWrittenCount$non_lazy_ptr)
  "_deflate", referenced from:
      +[ASIHTTPRequest compressData:] in ASIHTTPRequest.o
      +[ASIHTTPRequest compressDataFromSource:toDestination:] in ASIHTTPRequest.o
  "_SCNetworkReachabilityCreateWithAddress", referenced from:
      +[Reachability reachabilityWithAddress:] in Reachability.o
  "_kCFErrorDomainCFNetwork", referenced from:
      _kCFErrorDomainCFNetwork$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFErrorDomainCFNetwork$non_lazy_ptr)
  "_kCFStreamSSLValidatesCertificateChain", referenced from:
      _kCFStreamSSLValidatesCertificateChain$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamSSLValidatesCertificateChain$non_lazy_ptr)
  "_CFHTTPAuthenticationCreateFromResponse", referenced from:
      -[ASIHTTPRequest attemptToApplyProxyCredentialsAndResume] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyCredentialsAndResume] in ASIHTTPRequest.o
  "_deflateEnd", referenced from:
      +[ASIHTTPRequest compressData:] in ASIHTTPRequest.o
      +[ASIHTTPRequest compressDataFromSource:toDestination:] in ASIHTTPRequest.o
      +[ASIHTTPRequest compressDataFromSource:toDestination:] in ASIHTTPRequest.o
      +[ASIHTTPRequest compressDataFromSource:toDestination:] in ASIHTTPRequest.o
  "_UTTypeCopyPreferredTagWithClass", referenced from:
      +[ASIHTTPRequest mimeTypeForFileAtPath:] in ASIHTTPRequest.o
  "_kCFStreamPropertyHTTPSProxyHost", referenced from:
      _kCFStreamPropertyHTTPSProxyHost$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPSProxyHost$non_lazy_ptr)
  "_kCFHTTPAuthenticationSchemeNTLM", referenced from:
      _kCFHTTPAuthenticationSchemeNTLM$non_lazy_ptr in ASIAuthenticationDialog.o
      _kCFHTTPAuthenticationSchemeNTLM$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPAuthenticationSchemeNTLM$non_lazy_ptr)
  "_CFHTTPAuthenticationCopyMethod", referenced from:
      -[ASIHTTPRequest attemptToApplyProxyCredentialsAndResume] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyCredentialsAndResume] in ASIHTTPRequest.o
  "_kCFHTTPAuthenticationAccountDomain", referenced from:
      _kCFHTTPAuthenticationAccountDomain$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPAuthenticationAccountDomain$non_lazy_ptr)
  "_UTTypeCreatePreferredIdentifierForTag", referenced from:
      +[ASIHTTPRequest mimeTypeForFileAtPath:] in ASIHTTPRequest.o
  "_CFNetworkCopySystemProxySettings", referenced from:
      -[ASIHTTPRequest startRequest] in ASIHTTPRequest.o
  "_SCNetworkReachabilityUnscheduleFromRunLoop", referenced from:
      -[Reachability stopNotifier] in Reachability.o
  "_kCFStreamPropertyHTTPProxyPort", referenced from:
      _kCFStreamPropertyHTTPProxyPort$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertyHTTPProxyPort$non_lazy_ptr)
  "_CFHTTPAuthenticationRequiresAccountDomain", referenced from:
      -[ASIHTTPRequest findProxyCredentials] in ASIHTTPRequest.o
      -[ASIHTTPRequest findCredentials] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyProxyCredentialsAndResume] in ASIHTTPRequest.o
      -[ASIHTTPRequest attemptToApplyCredentialsAndResume] in ASIHTTPRequest.o
  "_SCNetworkReachabilityCreateWithName", referenced from:
      +[Reachability reachabilityWithHostName:] in Reachability.o
  "_SCNetworkReachabilitySetCallback", referenced from:
      -[Reachability startNotifier] in Reachability.o
  "_kCFHTTPAuthenticationPassword", referenced from:
      _kCFHTTPAuthenticationPassword$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPAuthenticationPassword$non_lazy_ptr)
  "_kCFHTTPVersion1_0", referenced from:
      _kCFHTTPVersion1_0$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPVersion1_0$non_lazy_ptr)
  "_kCFHTTPVersion1_1", referenced from:
      _kCFHTTPVersion1_1$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFHTTPVersion1_1$non_lazy_ptr)
  "_kCFStreamPropertySSLSettings", referenced from:
      _kCFStreamPropertySSLSettings$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamPropertySSLSettings$non_lazy_ptr)
  "_kCFStreamErrorDomainHTTP", referenced from:
      _kCFStreamErrorDomainHTTP$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kCFStreamErrorDomainHTTP$non_lazy_ptr)
  "_CFReadStreamCreateForHTTPRequest", referenced from:
      -[ASIHTTPRequest startRequest] in ASIHTTPRequest.o
  "_kUTTagClassFilenameExtension", referenced from:
      _kUTTagClassFilenameExtension$non_lazy_ptr in ASIHTTPRequest.o
     (maybe you meant: _kUTTagClassFilenameExtension$non_lazy_ptr)
ld: symbol(s) not found
collect2: ld returned 1 exit status


新版的ASIHttpRequest代码结构修改很多，不再像之前那样分为ASIHTTPRequest和ASIHTTPRequestDemo两个文件夹。


只选取需要的代码加入到项目中后，发现编译后出现了很多错误。


原因是编译的时候需要加上一些类库
requires CFNetwork, SystemConfiguration, MobileCoreServices, and libz.
Edit: It also needs libxml2