Determining the compiler default C++ standard

My bad. This way it seems to work.

In order to sum up the thread:

  • there’s no “official” way to check the standard that will be actually chosen when using target_compile_features
  • you can force a standard with set_property(TARGET ${TARGET_NAME} PROPERTY CXX_STANDARD <value>)

Thanks again, regards
PS I’ll mark this comment as answer as it is merging all the provided information