diff --git a/src/core/RpUnits.h b/src/core/RpUnits.h index a640205..e697424 100644 --- a/src/core/RpUnits.h +++ b/src/core/RpUnits.h @@ -59,6 +59,7 @@ enum RP_UNITS_CONSTS { #include <stdlib.h> #include <errno.h> #include <math.h> +#include <functional> #include "RpDict.h" #include "RpUnitsStd.h"