將XMPPFrameworke所有文件導入進自己的項目中後遇到了幾個問題，
1，出現libxml/tree.h file not found，這個只需要在target———》Build Rules———》Link Binary With Libraries導入 libxml2.dylib 包,然後在target———》Build Setting裏面設置Header Search Paths爲 /usr/include/libxml2
這個問題就解決了。但是又出現了新的錯誤，而且非常多：
Undefined symbols for architecture i386:
"_initGenericErrorDefaultFunc", referenced from:
___23+[DDXMLNode initialize]_block_invoke in DDXMLNode.o
"_xmlAddChild", referenced from:
-[DDXMLElement addAttribute:] in DDXMLElement.o
-[DDXMLElement addChild:] in DDXMLElement.o
-[DDXMLElement insertChild:atIndex:] in DDXMLElement.o
_xmpp_xmlStartElement in XMPPParser.o
_xmpp_xmlCharacters in XMPPParser.o
"_xmlAddPrevSibling", referenced from:
-[DDXMLElement insertChild:atIndex:] in DDXMLElement.o
"_xmlBufferCreate", referenced from:
-[DDXMLNode XMLStringWithOptions:] in DDXMLNode.o
"_xmlBufferFree", referenced from:
-[DDXMLNode XMLStringWithOptions:] in DDXMLNode.o
"_xmlCopyDoc", referenced from:
-[DDXMLNode copyWithZone:] in DDXMLNode.o
"_xmlCopyDtd", referenced from:
-[DDXMLNode copyWithZone:] in DDXMLNode.o
"_xmlCopyNamespace", referenced from:
-[DDXMLNode copyWithZone:] in DDXMLNode.o
"_xmlCopyNode", referenced from:
_xmpp_onDidReadRoot in XMPPParser.o
-[DDXMLNode copyWithZone:] in DDXMLNode.o
"_xmlCopyProp", referenced from:
-[DDXMLNode copyWithZone:] in DDXMLNode.o
"_xmlCreatePushParserCtxt", referenced from:
-[XMPPParser initWithDelegate:delegateQueue:parserQueue:] in XMPPParser.o
"_xmlCtxtGetLastError", referenced from:
___24-[XMPPParser parseData:]_block_invoke in XMPPParser.o
"_xmlDocGetRootElement", referenced from:
-[DDXMLDocument rootElement] in DDXMLDocument.o
_xmpp_postEndElement in XMPPParser.o
_xmpp_xmlSearchNs in XMPPParser.o
_xmpp_postStartElement in XMPPParser.o
"_xmlDocSetRootElement", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlEncodeSpecialChars", referenced from:
-[DDXMLNode setStringValue:] in DDXMLNode.o
-[DDXMLNamespaceNode setStringValue:] in DDXMLNode.o
-[DDXMLAttributeNode setStringValue:] in DDXMLNode.o
"_xmlFree", referenced from:
_xmpp_xmlStartElement in XMPPParser.o
-[DDXMLNode setStringValue:] in DDXMLNode.o
-[DDXMLNode stringValue] in DDXMLNode.o
-[DDXMLNamespaceNode setName:] in DDXMLNode.o
-[DDXMLNamespaceNode setStringValue:] in DDXMLNode.o
-[DDXMLAttributeNode setStringValue:] in DDXMLNode.o
_xmpp_xmlStartElement in XMPPParser.o
-[DDXMLNode setStringValue:] in DDXMLNode.o
-[DDXMLNode stringValue] in DDXMLNode.o
-[DDXMLNamespaceNode setName:] in DDXMLNode.o
-[DDXMLNamespaceNode setStringValue:] in DDXMLNode.o
-[DDXMLAttributeNode setStringValue:] in DDXMLNode.o
"_xmlFreeDoc", referenced from:
-[XMPPParser dealloc] in XMPPParser.o
-[DDXMLNode dealloc] in DDXMLNode.o
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlFreeDtd", referenced from:
-[DDXMLNode dealloc] in DDXMLNode.o
"_xmlFreeNode", referenced from:
-[DDXMLNode dealloc] in DDXMLNode.o
+[DDXMLNode removeChild:] in DDXMLNode.o
+[DDXMLNode removeAllChildrenFromNode:] in DDXMLNode.o
"_xmlFreeNs", referenced from:
-[DDXMLNode dealloc] in DDXMLNode.o
+[DDXMLNode removeNamespace:fromNode:] in DDXMLNode.o
+[DDXMLNode removeAllNamespacesFromNode:] in DDXMLNode.o
-[DDXMLAttributeNode dealloc] in DDXMLNode.o
-[DDXMLAttributeNode setURI:] in DDXMLNode.o
"_xmlFreeParserCtxt", referenced from:
-[XMPPParser dealloc] in XMPPParser.o
"_xmlFreeProp", referenced from:
-[DDXMLNode dealloc] in DDXMLNode.o
+[DDXMLNode removeAttribute:] in DDXMLNode.o
+[DDXMLNode removeAllAttributesFromNode:] in DDXMLNode.o
"_xmlIndentTreeOutput", referenced from:
-[DDXMLNode XMLStringWithOptions:] in DDXMLNode.o
"_xmlKeepBlanksDefault", referenced from:
-[DDXMLDocument initWithData:options:error:] in DDXMLDocument.o
___23+[DDXMLNode initialize]_block_invoke in DDXMLNode.o
"_xmlNewComment", referenced from:
+[DDXMLNode commentWithStringValue:] in DDXMLNode.o
"_xmlNewDoc", referenced from:
-[XMPPParser initWithDelegate:delegateQueue:parserQueue:] in XMPPParser.o
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlNewDocNode", referenced from:
_xmpp_xmlStartElement in XMPPParser.o
"_xmlNewNode", referenced from:
-[DDXMLElement initWithName:] in DDXMLElement.o
-[DDXMLElement initWithName:URI:] in DDXMLElement.o
-[DDXMLElement initWithName:stringValue:] in DDXMLElement.o
"_xmlNewNs", referenced from:
_xmpp_xmlStartElement in XMPPParser.o
+[DDXMLNode namespaceWithName:stringValue:] in DDXMLNode.o
-[DDXMLNode setURI:] in DDXMLNode.o
+[DDXMLNode recursiveMigrateNamespace:to:node:] in DDXMLNode.o
+[DDXMLNode recursiveFixDefaultNamespacesInNode:withNewRoot:] in DDXMLNode.o
-[DDXMLAttributeNode detach] in DDXMLNode.o
-[DDXMLAttributeNode setURI:] in DDXMLNode.o
...
"_xmlNewNsProp", referenced from:
_xmpp_xmlStartElement in XMPPParser.o
"_xmlNewPI", referenced from:
+[DDXMLNode processingInstructionWithName:stringValue:] in DDXMLNode.o
"_xmlNewProp", referenced from:
_xmpp_xmlStartElement in XMPPParser.o
+[DDXMLNode attributeWithName:stringValue:] in DDXMLNode.o
+[DDXMLNode attributeWithName:URI:stringValue:] in DDXMLNode.o
"_xmlNewText", referenced from:
+[DDXMLNode textWithStringValue:] in DDXMLNode.o
-[DDXMLAttributeNode setStringValue:] in DDXMLNode.o
"_xmlNewTextLen", referenced from:
_xmpp_xmlCharacters in XMPPParser.o
"_xmlNodeDump", referenced from:
-[DDXMLNode XMLStringWithOptions:] in DDXMLNode.o
"_xmlNodeGetContent", referenced from:
-[DDXMLNode stringValue] in DDXMLNode.o
"_xmlNodeSetContent", referenced from:
-[DDXMLNode setStringValue:] in DDXMLNode.o
-[DDXMLAttributeNode setStringValue:] in DDXMLNode.o
"_xmlNodeSetName", referenced from:
-[DDXMLNode setName:] in DDXMLNode.o
"_xmlParseChunk", referenced from:
___24-[XMPPParser parseData:]_block_invoke in XMPPParser.o
"_xmlParseMemory", referenced from:
-[DDXMLDocument initWithData:options:error:] in DDXMLDocument.o
"_xmlSaveNoEmptyTags", referenced from:
-[DDXMLNode XMLStringWithOptions:] in DDXMLNode.o
"_xmlSearchNs", referenced from:
-[DDXMLElement elementsForName:] in DDXMLElement.o
-[DDXMLAttributeNode URI] in DDXMLNode.o
"_xmlSetStructuredErrorFunc", referenced from:
___23+[DDXMLNode initialize]_block_invoke in DDXMLNode.o
"_xmlStopParser", referenced from:
_xmpp_xmlAbortDueToMemoryShortage in XMPPParser.o
"_xmlStrEqual", referenced from:
-[DDXMLElement _elementsForName:localName:prefix:uri:] in DDXMLElement.o
-[DDXMLElement _hasAttributeWithName:] in DDXMLElement.o
-[DDXMLElement _removeAttributeForName:] in DDXMLElement.o
-[DDXMLElement attributeForName:] in DDXMLElement.o
-[DDXMLElement _removeNamespaceForPrefix:] in DDXMLElement.o
-[DDXMLElement namespaceForPrefix:] in DDXMLElement.o
-[DDXMLElement _recursiveResolveNamespaceForPrefix:atNode:] in DDXMLElement.o
...
"_xmlStrQEqual", referenced from:
-[DDXMLElement attributeForName:] in DDXMLElement.o
"_xmlStrdup", referenced from:
-[DDXMLNamespaceNode setName:] in DDXMLNode.o
"_xmlStringLenDecodeEntities", referenced from:
_xmpp_xmlStartElement in XMPPParser.o
"_xmlUnlinkNode", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlXPathEvalExpression", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlXPathFreeContext", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlXPathFreeObject", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlXPathNewContext", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
"_xmlXPathRegisterNs", referenced from:
-[DDXMLNode nodesForXPath:error:] in DDXMLNode.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invo
cation)
----------
原來是缺少一個依賴庫，添加這個庫 libresolv就可以解決了
