diff --git a/include/boost/geometry/algorithms/discrete_hausdorff_distance.hpp b/include/boost/geometry/algorithms/discrete_hausdorff_distance.hpp index 4c00d86021..224176affd 100644 --- a/include/boost/geometry/algorithms/discrete_hausdorff_distance.hpp +++ b/include/boost/geometry/algorithms/discrete_hausdorff_distance.hpp @@ -46,6 +46,8 @@ #include #include +#include + // Note that in order for this to work umbrella strategy has to contain // index strategies. #ifdef BOOST_GEOMETRY_ENABLE_SIMILARITY_RTREE