-# Python binding, generated with pybind11
-find_package(pybind11 2.2.0)
-if(NOT PYTHONLIBS_FOUND)
+# Python binding (with pybind11)
+################
+# Our usage of pybind11::overload_cast mandates C++14
+get_property(known_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES)
+
+if("cxx_std_14" IN_LIST known_features)
+
+ if(EXISTS ${CMAKE_HOME_DIRECTORY}/pybind11) # Try to use a local copy of pybind11, if any
+ message(STATUS "Use the internal copy of pybind11 (using C++14).")
+ add_subdirectory(${CMAKE_HOME_DIRECTORY}/pybind11)
+ set(pybind11_FOUND ON)
+
+ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_HOME_DIRECTORY}/pybind11/tools/)
+ set(Python_ADDITIONAL_VERSIONS 3.7 3.6 3.5 3.4)
+ find_package(PythonLibsNew ${PYBIND11_PYTHON_VERSION} REQUIRED)
+
+ else()
+ find_package(pybind11 2.2.0)
+ endif()
+
+ if(NOT PYTHONLIBS_FOUND)
+ message(STATUS "Python libs not found. Turn pybind11 off.")
+
+ set(pybind11_FOUND OFF)
+ endif()
+
+else()
+ message(STATUS "No support for C++14 detected, don't even search for pybind11.")