Xcode Compile Error Undefined symbols for architecture x86_64: "TXMPMeta::Initialize(

I was to compile the Toolkit which provided

libXMPCoreStatic.a and

libXMPFilesStatic.a.

I'm trying to using these files in a new Xcode project but i keep getting the following error:

Undefined symbols for architecture x86_64:

  "TXMPMeta<std::string>::Initialize()", referenced from