On Thu, Apr 18, 2019 at 08:06:57AM -0500, Jason Bacon wrote: > I'm all for removing other unnecessary patches. Is this looking for a > compiler newer than the year 2011?? > > +#if defined(_MSC_VER) || defined(_LIBCPP_VERSION) || __cplusplus>=201103L The year-thingie is for C++11 (2011).