我正在尝试使用任何一个基于 libxml 的 3rd 方 XML 解析器，但我不能，因为我认为我有某种 libxml2 问题
我将其他链接器标志设置为 -lxml2
和 /usr/include/libxml2 的标头搜索路径
但是当我尝试编译时，我仍然会得到大量未定义的符号。下面的错误是尝试编译 TouchXML 的结果。
Undefined symbols:
"_xmlDocDumpFormatMemory", referenced from:
-[CXMLDocument description] in CXMLDocument.o
"_xmlXPathNewContext", referenced from:
-[CXMLNode nodesForXPath:error:] in CXMLNode.o
-[CXMLNode(CXMLNode_NamespaceExtensions) nodesForXPath:namespaceMappings:error:] in CXMLNode_XPathExtensions.o
"_xmlOutputBufferFlush", referenced from:
-[CXMLNode XMLStringWithOptions:] in CXMLNode.o
"_xmlNodeListGetString", referenced from:
-[CXMLNode stringValue] in CXMLNode.o
"_xmlFree", referenced from:
_xmlFree$non_lazy_ptr in CXMLDocument.o
_xmlFree$non_lazy_ptr in CXMLNode.o
(maybe you meant: _xmlFree$non_lazy_ptr)
"_xmlXPathFreeContext", referenced from:
-[CXMLNode nodesForXPath:error:] in CXMLNode.o
-[CXMLNode(CXMLNode_NamespaceExtensions) nodesForXPath:namespaceMappings:error:] in CXMLNode_XPathExtensions.o
"_xmlNodeDumpOutput", referenced from:
-[CXMLNode XMLStringWithOptions:] in CXMLNode.o
"_xmlAddChild", referenced from:
-[CXMLDocument(CXMLDocument_CreationExtensions) addChild:] in CXMLDocument_CreationExtensions.o
-[CXMLElement(CXMLElement_CreationExtensions) addChild:] in CXMLElement_CreationExtensions.o
-[CXMLElement(CXMLElement_CreationExtensions) setStringValue:] in CXMLElement_CreationExtensions.o
"_xmlDocSetRootElement", referenced from:
+[CXMLNode(CXMLNode_CreationExtensions) documentWithRootElement:] in CXMLNode_CreationExtensions.o
"_xmlFreeNode", referenced from:
-[CXMLNode dealloc] in CXMLNode.o
"_xmlXPathEvalExpression", referenced from:
-[CXMLNode nodesForXPath:error:] in CXMLNode.o
-[CXMLNode(CXMLNode_NamespaceExtensions) nodesForXPath:namespaceMappings:error:] in CXMLNode_XPathExtensions.o
"_xmlStrcmp", referenced from:
-[CXMLElement elementsForName:] in CXMLElement.o
-[CXMLElement attributeForName:] in CXMLElement.o
"_xmlParseDoc", referenced from:
-[CXMLDocument initWithXMLString:options:error:] in CXMLDocument.o
"_xmlCopyNode", referenced from:
-[CXMLNode copyWithZone:] in CXMLNode.o
"_xmlOutputBufferClose", referenced from:
-[CXMLNode XMLStringWithOptions:] in CXMLNode.o
"_xmlAddPrevSibling", referenced from:
-[CXMLDocument(CXMLDocument_CreationExtensions) insertChild:atIndex:] in CXMLDocument_CreationExtensions.o
"_xmlDocDumpMemory", referenced from:
-[CXMLDocument XMLDataWithOptions:] in CXMLDocument.o
"_xmlNewDoc", referenced from:
+[CXMLNode(CXMLNode_CreationExtensions) document] in CXMLNode_CreationExtensions.o
+[CXMLNode(CXMLNode_CreationExtensions) documentWithRootElement:] in CXMLNode_CreationExtensions.o
"_xmlNewText", referenced from:
-[CXMLElement(CXMLElement_CreationExtensions) setStringValue:] in CXMLElement_CreationExtensions.o
"_xmlXPathFreeObject", referenced from:
-[CXMLNode nodesForXPath:error:] in CXMLNode.o
-[CXMLNode(CXMLNode_NamespaceExtensions) nodesForXPath:namespaceMappings:error:] in CXMLNode_XPathExtensions.o
"_xmlGetLastError", referenced from:
-[CXMLDocument initWithXMLString:options:error:] in CXMLDocument.o
"_xmlNewPI", referenced from:
+[CXMLNode(CXMLNode_CreationExtensions) processingInstructionWithName:stringValue:] in CXMLNode_CreationExtensions.o
"_xmlSetNs", referenced from:
-[CXMLElement(CXMLElement_CreationExtensions) addNamespace:] in CXMLElement_CreationExtensions.o
"_xmlReadMemory", referenced from:
-[CXMLDocument initWithData:encoding:options:error:] in CXMLDocument.o
"_xmlNewNs", referenced from:
+[CXMLNode(CXMLNode_CreationExtensions) elementWithName:URI:] in CXMLNode_CreationExtensions.o
+[CXMLNode(CXMLNode_CreationExtensions) namespaceWithName:stringValue:] in CXMLNode_CreationExtensions.o
"_xmlResetLastError", referenced from:
-[CXMLDocument initWithXMLString:options:error:] in CXMLDocument.o
"_xmlOutputBufferCreateIO", referenced from:
-[CXMLNode XMLStringWithOptions:] in CXMLNode.o
"_xmlNewNode", referenced from:
+[CXMLNode(CXMLNode_CreationExtensions) elementWithName:] in CXMLNode_CreationExtensions.o
+[CXMLNode(CXMLNode_CreationExtensions) elementWithName:URI:] in CXMLNode_CreationExtensions.o
+[CXMLNode(CXMLNode_CreationExtensions) elementWithName:stringValue:] in CXMLNode_CreationExtensions.o
"_xmlDocGetRootElement", referenced from:
-[CXMLDocument rootElement] in CXMLDocument.o
"_xmlXPathRegisterNs", referenced from:
-[CXMLNode(CXMLNode_NamespaceExtensions) nodesForXPath:namespaceMappings:error:] in CXMLNode_XPathExtensions.o
"_xmlFreeDoc", referenced from:
-[CXMLDocument dealloc] in CXMLDocument.o
ld: symbol(s) not found
