unity build after Xcode build error using Trilib plugin in unity?

Hello, i need help about IOS build error in Xcode. i am working VR project adding Trilib plugin also i build ios in unity build successed but in Xcode i will build it showing error"Linker" why but Trilib support multiple platform IOS also support but error"**linker command failed with exit code 1 (use -v to see invocation)** "no idea how.