CRAN Mac fails where clang and gcc are fine
knapply opened this issue · comments
https://www.r-project.org/nosvn/R.check/r-release-macos-x86_64/RcppSimdJson-00check.html
Adding #include <optional> to inst/include/RcppSimdJson/utils.hpp should do be all that's needed.
Confirmed, belatedly, at RHub.
That was spot-on and took care of business.