This sounds like it's more of a library thing than language thing. The problem (I'm guessing) is the older platforms have `libstdc++` which won't support newer

This sounds like it's more of a library thing than language thing. The problem (I'm guessing) is the older platforms have `libstdc++` which won't support newer features* . Though I suspect statically linking `libstdc++` might be a (nasty, but workable) option here. * - again, I'm guessing - I've been out of the c++ game for a few years...