> > > -# elif (__GNUC__ >= 7) || (__clang_major__ >= 10) > > > +# elif ((__GNUC__ >= 7) \ > > > + || (defined __apple_build_version__ \ > > > + ? __apple_build_version__ >= 14000000 \ > > > + : __clang_major__ >= 10)) > > > > > > Wiki suggests __apple_build_version__ >= 12000000 > > > https://en.wikipedia.org/wiki/Xcode#Xcode_11.0_-_14.x_(since_SwiftUI_framework)_2
Alternative Xcode versioning source found: https://github.com/gsl-lite/gsl-lite/blob/master/include/gsl/gsl-lite.hpp#L534-L557
