我添加了 标题搜索路径 $（SDKROOT）/ usr / include / libxml2
将库添加为 enter image description here
但是在构建项目时 我有错误：
Undefined symbols for architecture x86_64:
"_xmlAddChild", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlC14NDocDumpMemory", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlCleanupParser", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlDocDumpMemoryEnc", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlDocGetRootElement", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlFreeDoc", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlMemoryDump", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlNewChild", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlNewNode", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlNewNs", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlNewProp", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlParseDoc", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlXPathEvalExpression", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlXPathFreeContext", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlXPathFreeObject", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlXPathNewContext", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
"_xmlXPathRegisterNs", referenced from:
-[Ecp signData:withCertpass:withData::] in libEcp.a(Ecp.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
为什么图书馆没有定义“ xmlAddChild”
但是如果我在没有ReactNative的情况下创建相同的项目，那是可行的
出什么问题了？救命！