See https://github.com/boostorg/phoenix/issues/111 Index: boost-1.81.0.beta1/boost/phoenix/stl.hpp =================================================================== --- boost-1.81.0.beta1.orig/boost/phoenix/stl.hpp +++ boost-1.81.0.beta1/boost/phoenix/stl.hpp @@ -11,6 +11,5 @@ #include #include -#include #endif