[runtime-library] CMake configuration of runtime-library causes warnings about CMP0069

[wangkuiyi]

Following steps in the README file of the runtime-library sample, the command cmake -GNinja -Bbuild . prints the following warnings.

Adding cmake_policy(SET CMP0096 NEW) in warned cmake files suppresses these warnings.

I do not know CMP0096 or CMAKE_INTERPROCEDURAL_OPTIMIZATION. Are they necessary for building the runtime library? Should I just ignore these warnings?