With the new Xcode and new iOS, you need to update the links from libresolv.9.dylib and libxml2.dylib, removing the link from Target-> Building Phases and adding new files: the files are now in another folder:
/ Users / yyyyyy / Library / Developer / Xcode / iOS DeviceSupport / 9.0 (XXXXXX) / Symbols / USR / Library
where yyyyyy is the username and xxxxxx of iOS bulild.
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