What I have done after 2 days of reading stack overflow:
Keywords to problem:
"Apple-Mach-O Linker Error", "libGGLCore.a(Clientanalytics.pb.o,Icore.pb.o,Jspb.pb.o,LogsAnnotations.pb.o ...)", "_OBJC_CLASS_$_GSDK_PBExtensionRegistry" ,"_OBJC_CLASS_$_GSDK_PBGeneratedEnumDescriptor" ....
I Don't use pod. Manually Download files from Github
So I am stuck. How do I solve the problem(s) displayed in the image below:
clang: error: linker command failed with exit code 1 (use -v to see invocation)