In file included from ./chaiscript/dispatchkit/type_conversions.hpp:22,
                 from ./chaiscript/dispatchkit/boxed_cast.hpp:17,
                 from ./chaiscript/dispatchkit/boxed_number.hpp:19,
                 from ./chaiscript/chaiscript_basic.hpp:12,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/../chaiscript_threading.hpp:50:14: error: ‘std::shared_mutex’ has not been declared
   50 |   using std::shared_mutex;
      |              ^~~~~~~~~~~~
./chaiscript/dispatchkit/../chaiscript_threading.hpp:52:14: error: ‘std::mutex’ has not been declared
   52 |   using std::mutex;
      |              ^~~~~
./chaiscript/dispatchkit/../chaiscript_threading.hpp:54:14: error: ‘std::recursive_mutex’ has not been declared
   54 |   using std::recursive_mutex;
      |              ^~~~~~~~~~~~~~~
In file included from ./chaiscript/dispatchkit/boxed_cast.hpp:17,
                 from ./chaiscript/dispatchkit/boxed_number.hpp:19,
                 from ./chaiscript/chaiscript_basic.hpp:12,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/type_conversions.hpp:409:44: error: ‘shared_mutex’ in namespace ‘chaiscript::detail::threading’ does not name a type
  409 |     mutable chaiscript::detail::threading::shared_mutex m_mutex;
      |                                            ^~~~~~~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp: In constructor ‘chaiscript::Type_Conversions::Type_Conversions()’:
./chaiscript/dispatchkit/type_conversions.hpp:268:11: error: class ‘chaiscript::Type_Conversions’ does not have any field named ‘m_mutex’
  268 |         : m_mutex()
      |           ^~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp: In member function ‘const std::set<const std::type_info*, chaiscript::Type_Conversions::Less_Than>& chaiscript::Type_Conversions::thread_cache() const’:
./chaiscript/dispatchkit/type_conversions.hpp:283:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  283 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp:283:95: error: template argument 1 is invalid
  283 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/type_conversions.hpp:283:99: error: ‘m_mutex’ was not declared in this scope
  283 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/type_conversions.hpp: In member function ‘void chaiscript::Type_Conversions::add_conversion(const std::shared_ptr<chaiscript::detail::Type_Conversion_Base>&)’:
./chaiscript/dispatchkit/type_conversions.hpp:291:81: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  291 |       chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                 ^~~~~~~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp:291:93: error: template argument 1 is invalid
  291 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/type_conversions.hpp:291:97: error: ‘m_mutex’ was not declared in this scope
  291 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/type_conversions.hpp: In member function ‘bool chaiscript::Type_Conversions::has_conversion(const chaiscript::Type_Info&, const chaiscript::Type_Info&) const’:
./chaiscript/dispatchkit/type_conversions.hpp:367:81: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  367 |       chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                 ^~~~~~~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp:367:93: error: template argument 1 is invalid
  367 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/type_conversions.hpp:367:97: error: ‘m_mutex’ was not declared in this scope
  367 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/type_conversions.hpp: In member function ‘std::shared_ptr<chaiscript::detail::Type_Conversion_Base> chaiscript::Type_Conversions::get_conversion(const chaiscript::Type_Info&, const chaiscript::Type_Info&) const’:
./chaiscript/dispatchkit/type_conversions.hpp:372:81: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  372 |       chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                 ^~~~~~~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp:372:93: error: template argument 1 is invalid
  372 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/type_conversions.hpp:372:97: error: ‘m_mutex’ was not declared in this scope
  372 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/type_conversions.hpp: In member function ‘std::set<std::shared_ptr<chaiscript::detail::Type_Conversion_Base> > chaiscript::Type_Conversions::get_conversions() const’:
./chaiscript/dispatchkit/type_conversions.hpp:404:81: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  404 |       chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                 ^~~~~~~~~~~~
./chaiscript/dispatchkit/type_conversions.hpp:404:93: error: template argument 1 is invalid
  404 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/type_conversions.hpp:404:97: error: ‘m_mutex’ was not declared in this scope
  404 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

In file included from ./chaiscript/chaiscript_basic.hpp:13,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/dispatchkit.hpp: At global scope:
./chaiscript/dispatchkit/dispatchkit.hpp:1155:46: error: ‘shared_mutex’ in namespace ‘chaiscript::detail::threading’ does not name a type
 1155 |       mutable chaiscript::detail::threading::shared_mutex m_mutex;
      |                                              ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘void chaiscript::detail::Dispatch_Engine::add_global_const(const chaiscript::Boxed_Value&, const string&)’:
./chaiscript/dispatchkit/dispatchkit.hpp:438:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  438 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:438:95: error: template argument 1 is invalid
  438 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:438:99: error: ‘m_mutex’ was not declared in this scope
  438 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘chaiscript::Boxed_Value chaiscript::detail::Dispatch_Engine::add_global_no_throw(chaiscript::Boxed_Value, std::string)’:
./chaiscript/dispatchkit/dispatchkit.hpp:449:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  449 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:449:95: error: template argument 1 is invalid
  449 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:449:99: error: ‘m_mutex’ was not declared in this scope
  449 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘void chaiscript::detail::Dispatch_Engine::add_global(chaiscript::Boxed_Value, std::string)’:
./chaiscript/dispatchkit/dispatchkit.hpp:456:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  456 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:456:95: error: template argument 1 is invalid
  456 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:456:99: error: ‘m_mutex’ was not declared in this scope
  456 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘void chaiscript::detail::Dispatch_Engine::set_global(chaiscript::Boxed_Value, std::string)’:
./chaiscript/dispatchkit/dispatchkit.hpp:466:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  466 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:466:95: error: template argument 1 is invalid
  466 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:466:99: error: ‘m_mutex’ was not declared in this scope
  466 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘chaiscript::Boxed_Value chaiscript::detail::Dispatch_Engine::get_object(std::string_view, std::atomic_uint_fast32_t&, chaiscript::detail::Stack_Holder&) const’:
./chaiscript/dispatchkit/dispatchkit.hpp:537:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  537 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:537:95: error: template argument 1 is invalid
  537 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:537:99: error: ‘m_mutex’ was not declared in this scope
  537 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘void chaiscript::detail::Dispatch_Engine::add(const chaiscript::Type_Info&, const string&)’:
./chaiscript/dispatchkit/dispatchkit.hpp:557:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  557 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:557:95: error: template argument 1 is invalid
  557 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:557:99: error: ‘m_mutex’ was not declared in this scope
  557 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘chaiscript::Type_Info chaiscript::detail::Dispatch_Engine::get_type(std::string_view, bool) const’:
./chaiscript/dispatchkit/dispatchkit.hpp:564:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  564 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:564:95: error: template argument 1 is invalid
  564 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:564:99: error: ‘m_mutex’ was not declared in this scope
  564 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘std::string chaiscript::detail::Dispatch_Engine::get_type_name(const chaiscript::Type_Info&) const’:
./chaiscript/dispatchkit/dispatchkit.hpp:583:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  583 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:583:95: error: template argument 1 is invalid
  583 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:583:99: error: ‘m_mutex’ was not declared in this scope
  583 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘std::vector<std::pair<std::__cxx11::basic_string<char>, chaiscript::Type_Info> > chaiscript::detail::Dispatch_Engine::get_types() const’:
./chaiscript/dispatchkit/dispatchkit.hpp:596:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  596 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:596:95: error: template argument 1 is invalid
  596 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:596:99: error: ‘m_mutex’ was not declared in this scope
  596 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘std::pair<unsigned int, std::shared_ptr<std::vector<std::shared_ptr<chaiscript::dispatch::Proxy_Function_Base> > > > chaiscript::detail::Dispatch_Engine::get_function(std::string_view, size_t) const’:
./chaiscript/dispatchkit/dispatchkit.hpp:613:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  613 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:613:95: error: template argument 1 is invalid
  613 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:613:99: error: ‘m_mutex’ was not declared in this scope
  613 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘chaiscript::Boxed_Value chaiscript::detail::Dispatch_Engine::get_function_object(const string&) const’:
./chaiscript/dispatchkit/dispatchkit.hpp:627:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  627 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:627:95: error: template argument 1 is invalid
  627 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:627:99: error: ‘m_mutex’ was not declared in this scope
  627 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘bool chaiscript::detail::Dispatch_Engine::function_exists(std::string_view) const’:
./chaiscript/dispatchkit/dispatchkit.hpp:647:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  647 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:647:95: error: template argument 1 is invalid
  647 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:647:99: error: ‘m_mutex’ was not declared in this scope
  647 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘std::map<std::__cxx11::basic_string<char>, chaiscript::Boxed_Value> chaiscript::detail::Dispatch_Engine::get_scripting_objects() const’:
./chaiscript/dispatchkit/dispatchkit.hpp:698:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  698 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:698:95: error: template argument 1 is invalid
  698 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:698:99: error: ‘m_mutex’ was not declared in this scope
  698 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘std::map<std::__cxx11::basic_string<char>, chaiscript::Boxed_Value> chaiscript::detail::Dispatch_Engine::get_function_objects() const’:
./chaiscript/dispatchkit/dispatchkit.hpp:708:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  708 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:708:95: error: template argument 1 is invalid
  708 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:708:99: error: ‘m_mutex’ was not declared in this scope
  708 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘std::vector<std::pair<std::__cxx11::basic_string<char>, std::shared_ptr<chaiscript::dispatch::Proxy_Function_Base> >, std::allocator<std::pair<std::__cxx11::basic_string<char>, std::shared_ptr<chaiscript::dispatch::Proxy_Function_Base> > > > chaiscript::detail::Dispatch_Engine::get_functions() const’:
./chaiscript/dispatchkit/dispatchkit.hpp:723:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  723 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:723:95: error: template argument 1 is invalid
  723 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:723:99: error: ‘m_mutex’ was not declared in this scope
  723 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘chaiscript::detail::Dispatch_Engine::State chaiscript::detail::Dispatch_Engine::get_state() const’:
./chaiscript/dispatchkit/dispatchkit.hpp:968:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  968 |         chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:968:95: error: template argument 1 is invalid
  968 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:968:99: error: ‘m_mutex’ was not declared in this scope
  968 |     chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘void chaiscript::detail::Dispatch_Engine::set_state(const chaiscript::detail::Dispatch_Engine::State&)’:
./chaiscript/dispatchkit/dispatchkit.hpp:974:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  974 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:974:95: error: template argument 1 is invalid
  974 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:974:99: error: ‘m_mutex’ was not declared in this scope
  974 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/dispatchkit/dispatchkit.hpp: In member function ‘void chaiscript::detail::Dispatch_Engine::add_function(const Proxy_Function&, const string&)’:
./chaiscript/dispatchkit/dispatchkit.hpp:1116:83: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
 1116 |         chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                   ^~~~~~~~~~~~
./chaiscript/dispatchkit/dispatchkit.hpp:1116:95: error: template argument 1 is invalid
 1116 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                           ^

./chaiscript/dispatchkit/dispatchkit.hpp:1116:99: error: ‘m_mutex’ was not declared in this scope
 1116 |     chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
      |                                                                                               ^~~~~~~

In file included from ./chaiscript/chaiscript_basic.hpp:17,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/language/chaiscript_engine.hpp: At global scope:
./chaiscript/language/chaiscript_engine.hpp:65:44: error: ‘shared_mutex’ in namespace ‘chaiscript::detail::threading’ does not name a type
   65 |     mutable chaiscript::detail::threading::shared_mutex m_mutex;
      |                                            ^~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:66:44: error: ‘recursive_mutex’ in namespace ‘chaiscript::detail::threading’ does not name a type
   66 |     mutable chaiscript::detail::threading::recursive_mutex m_use_mutex;
      |                                            ^~~~~~~~~~~~~~~
In file included from ./chaiscript/chaiscript_basic.hpp:17,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/language/chaiscript_engine.hpp: In member function ‘chaiscript::Boxed_Value chaiscript::ChaiScript_Basic::use(const string&)’:
./chaiscript/language/chaiscript_engine.hpp:357:85: error: ‘recursive_mutex’ is not a member of ‘chaiscript::detail::threading’
  357 |           chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                     ^~~~~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:357:100: error: template argument 1 is invalid
  357 | iscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                       ^

./chaiscript/language/chaiscript_engine.hpp:357:104: error: ‘m_use_mutex’ was not declared in this scope
  357 | iscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                           ^~~~~~~~~~~

./chaiscript/language/chaiscript_engine.hpp:358:85: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  358 |           chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                     ^~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:358:97: error: template argument 1 is invalid
  358 |    chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                          ^

./chaiscript/language/chaiscript_engine.hpp:358:102: error: ‘m_mutex’ was not declared in this scope
  358 |    chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/language/chaiscript_engine.hpp:363:16: error: request for member ‘unlock’ in ‘l2’, which is of non-class type ‘int’
  363 |             l2.unlock();
      |                ^~~~~~
./chaiscript/language/chaiscript_engine.hpp:365:16: error: request for member ‘lock’ in ‘l2’, which is of non-class type ‘int’
  365 |             l2.lock();
      |                ^~~~
./chaiscript/language/chaiscript_engine.hpp: In member function ‘chaiscript::ChaiScript_Basic::State chaiscript::ChaiScript_Basic::get_state() const’:
./chaiscript/language/chaiscript_engine.hpp:436:80: error: ‘recursive_mutex’ is not a member of ‘chaiscript::detail::threading’
  436 |       chaiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                ^~~~~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:436:95: error: template argument 1 is invalid
  436 | aiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                       ^

./chaiscript/language/chaiscript_engine.hpp:436:99: error: ‘m_use_mutex’ was not declared in this scope
  436 | aiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                           ^~~~~~~~~~~

./chaiscript/language/chaiscript_engine.hpp:437:81: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  437 |       chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                 ^~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:437:93: error: template argument 1 is invalid
  437 |    chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                          ^

./chaiscript/language/chaiscript_engine.hpp:437:98: error: ‘m_mutex’ was not declared in this scope
  437 |    chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/language/chaiscript_engine.hpp: In member function ‘void chaiscript::ChaiScript_Basic::set_state(const chaiscript::ChaiScript_Basic::State&)’:
./chaiscript/language/chaiscript_engine.hpp:461:80: error: ‘recursive_mutex’ is not a member of ‘chaiscript::detail::threading’
  461 |       chaiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                ^~~~~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:461:95: error: template argument 1 is invalid
  461 | aiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                       ^

./chaiscript/language/chaiscript_engine.hpp:461:99: error: ‘m_use_mutex’ was not declared in this scope
  461 | aiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                           ^~~~~~~~~~~

./chaiscript/language/chaiscript_engine.hpp:462:81: error: ‘shared_mutex’ is not a member of ‘chaiscript::detail::threading’
  462 |       chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                 ^~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:462:93: error: template argument 1 is invalid
  462 |    chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                          ^

./chaiscript/language/chaiscript_engine.hpp:462:98: error: ‘m_mutex’ was not declared in this scope
  462 |    chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l2(m_mutex);
      |                                                                                               ^~~~~~~

./chaiscript/language/chaiscript_engine.hpp: In member function ‘void chaiscript::ChaiScript_Basic::load_module(const string&, const string&)’:
./chaiscript/language/chaiscript_engine.hpp:579:80: error: ‘recursive_mutex’ is not a member of ‘chaiscript::detail::threading’
  579 |       chaiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                ^~~~~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:579:95: error: template argument 1 is invalid
  579 | aiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                       ^

./chaiscript/language/chaiscript_engine.hpp:579:99: error: ‘m_use_mutex’ was not declared in this scope
  579 | aiscript::detail::threading::lock_guard<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                           ^~~~~~~~~~~

./chaiscript/language/chaiscript_engine.hpp: In member function ‘void chaiscript::ChaiScript_Basic::import(const string&)’:
./chaiscript/language/chaiscript_engine.hpp:676:81: error: ‘recursive_mutex’ is not a member of ‘chaiscript::detail::threading’
  676 |       chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                 ^~~~~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:676:96: error: template argument 1 is invalid
  676 | iscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                       ^

./chaiscript/language/chaiscript_engine.hpp:676:100: error: ‘m_use_mutex’ was not declared in this scope
  676 | iscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                           ^~~~~~~~~~~

./chaiscript/language/chaiscript_engine.hpp: In member function ‘void chaiscript::ChaiScript_Basic::register_namespace(const std::function<void(chaiscript::dispatch::Dynamic_Object&)>&, const string&)’:
./chaiscript/language/chaiscript_engine.hpp:691:81: error: ‘recursive_mutex’ is not a member of ‘chaiscript::detail::threading’
  691 |       chaiscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                 ^~~~~~~~~~~~~~~
./chaiscript/language/chaiscript_engine.hpp:691:96: error: template argument 1 is invalid
  691 | iscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                       ^

./chaiscript/language/chaiscript_engine.hpp:691:100: error: ‘m_use_mutex’ was not declared in this scope
  691 | iscript::detail::threading::unique_lock<chaiscript::detail::threading::recursive_mutex> l(m_use_mutex);
      |                                                                                           ^~~~~~~~~~~

In file included from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
./chaiscript/chaiscript_stdlib.hpp: In lambda function:
./chaiscript/chaiscript_stdlib.hpp:53:125: error: invalid use of incomplete type ‘class std::future<chaiscript::Boxed_Value>’
   53 | on<chaiscript::Boxed_Value()> &t_func) { return std::async(std::launch::async, t_func); }),
      |                                                                                      ^

In file included from ./chaiscript/chaiscript_stdlib.hpp:31,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
/usr/lib/gcc/i686-w64-mingw32/9.3-win32/include/c++/future:125:11: note: declaration of ‘class std::future<chaiscript::Boxed_Value>’
  125 |     class future;
      |           ^~~~~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:23,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/bootstrap_stl.hpp: In instantiation of ‘void chaiscript::bootstrap::standard_library::future_type(const string&, chaiscript::Module&) [with FutureType = std::future<chaiscript::Boxed_Value>; std::string = std::__cxx11::basic_string<char>]’:
./chaiscript/chaiscript_stdlib.hpp:51:100:   required from here
./chaiscript/dispatchkit/bootstrap_stl.hpp:527:50: error: invalid use of incomplete type ‘const class std::future<chaiscript::Boxed_Value>’
  527 |     m.add(fun([](const FutureType &t) { return t.valid(); }), "valid");
      |                                                ~~^~~~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:31,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
/usr/lib/gcc/i686-w64-mingw32/9.3-win32/include/c++/future:125:11: note: declaration of ‘class std::future<chaiscript::Boxed_Value>’
  125 |     class future;
      |           ^~~~~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:23,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/bootstrap_stl.hpp:528:44: error: invalid use of incomplete type ‘class std::future<chaiscript::Boxed_Value>’
  528 |     m.add(fun([](FutureType &t) { return t.get(); }), "get");
      |                                          ~~^~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:31,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
/usr/lib/gcc/i686-w64-mingw32/9.3-win32/include/c++/future:125:11: note: declaration of ‘class std::future<chaiscript::Boxed_Value>’
  125 |     class future;
      |           ^~~~~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:23,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/bootstrap_stl.hpp:529:15: error: incomplete type ‘std::future<chaiscript::Boxed_Value>’ used in nested name specifier
  529 |     m.add(fun(&FutureType::wait), "wait");
      |               ^~~~~~~~~~~~~~~~~
In file included from ./chaiscript/dispatchkit/bad_boxed_cast.hpp:18,
                 from ./chaiscript/dispatchkit/boxed_cast.hpp:14,
                 from ./chaiscript/dispatchkit/boxed_number.hpp:19,
                 from ./chaiscript/chaiscript_basic.hpp:12,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/type_info.hpp: In instantiation of ‘static constexpr chaiscript::Type_Info chaiscript::detail::Get_Type_Info<T>::get() [with T = std::future<chaiscript::Boxed_Value>]’:
./chaiscript/dispatchkit/type_info.hpp:205:41:   required from ‘constexpr chaiscript::Type_Info chaiscript::user_type() [with T = std::future<chaiscript::Boxed_Value>]’
./chaiscript/dispatchkit/bootstrap_stl.hpp:525:32:   required from ‘void chaiscript::bootstrap::standard_library::future_type(const string&, chaiscript::Module&) [with FutureType = std::future<chaiscript::Boxed_Value>; std::string = std::__cxx11::basic_string<char>]’
./chaiscript/chaiscript_stdlib.hpp:51:100:   required from here
./chaiscript/dispatchkit/type_info.hpp:114:27: error: invalid use of incomplete type ‘class std::future<chaiscript::Boxed_Value>’
  114 |                          &typeid(T),
      |                           ^~~~~~~~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:31,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
/usr/lib/gcc/i686-w64-mingw32/9.3-win32/include/c++/future:125:11: note: declaration of ‘class std::future<chaiscript::Boxed_Value>’
  125 |     class future;
      |           ^~~~~~
In file included from ./chaiscript/dispatchkit/bad_boxed_cast.hpp:18,
                 from ./chaiscript/dispatchkit/boxed_cast.hpp:14,
                 from ./chaiscript/dispatchkit/boxed_number.hpp:19,
                 from ./chaiscript/chaiscript_basic.hpp:12,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/dispatchkit/type_info.hpp:115:27: error: invalid use of incomplete type ‘class std::future<chaiscript::Boxed_Value>’
  115 |                          &typeid(typename Bare_Type<T>::type));
      |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ./chaiscript/chaiscript_stdlib.hpp:31,
                 from ./chaiscript/chaiscript.hpp:819,
                 from ./main.cpp:1:
/usr/lib/gcc/i686-w64-mingw32/9.3-win32/include/c++/future:125:11: note: declaration of ‘class std::future<chaiscript::Boxed_Value>’
  125 |     class future;
      |           ^~~~~~
In file included from ./chaiscript/language/chaiscript_engine.hpp:31,
                 from ./chaiscript/chaiscript_basic.hpp:17,
                 from ./chaiscript/chaiscript.hpp:818,
                 from ./main.cpp:1:
./chaiscript/language/../dispatchkit/register_function.hpp: At global scope:
./chaiscript/language/../dispatchkit/register_function.hpp:81:18: error: ‘chaiscript::Proxy_Function chaiscript::fun(T&&) [with T = chaiscript::bootstrap::standard_library::future_type(const string&, chaiscript::Module&) [with FutureType = std::future<chaiscript::Boxed_Value>; std::string = std::__cxx11::basic_string<char>]::<lambda(const std::future<chaiscript::Boxed_Value>&)>; chaiscript::Proxy_Function = std::shared_ptr<chaiscript::dispatch::Proxy_Function_Base>]’, declared using local type ‘chaiscript::bootstrap::standard_library::future_type(const string&, chaiscript::Module&) [with FutureType = std::future<chaiscript::Boxed_Value>; std::string = std::__cxx11::basic_string<char>]::<lambda(const std::future<chaiscript::Boxed_Value>&)>’, is used but never defined [-fpermissive]
   81 |   Proxy_Function fun(T &&t) {
      |                  ^~~
./chaiscript/language/../dispatchkit/register_function.hpp:81:18: error: ‘chaiscript::Proxy_Function chaiscript::fun(T&&) [with T = chaiscript::bootstrap::standard_library::future_type(const string&, chaiscript::Module&) [with FutureType = std::future<chaiscript::Boxed_Value>; std::string = std::__cxx11::basic_string<char>]::<lambda(std::future<chaiscript::Boxed_Value>&)>; chaiscript::Proxy_Function = std::shared_ptr<chaiscript::dispatch::Proxy_Function_Base>]’, declared using local type ‘chaiscript::bootstrap::standard_library::future_type(const string&, chaiscript::Module&) [with FutureType = std::future<chaiscript::Boxed_Value>; std::string = std::__cxx11::basic_string<char>]::<lambda(std::future<chaiscript::Boxed_Value>&)>’, is used but never defined [-fpermissive]