Build seems to require C++17, not C++11

[barracuda156]

CMakeLists ask for C++11, however the build fails even with C++14. In fact, it seems to require C++17:

In file included from /opt/local/include/core/exception.hpp:8,
                 from /opt/local/include/core/archive.hpp:22,
                 from /opt/local/include/core/ngcore.hpp:4,
                 from /opt/local/include/eigen3/../general/../include/mydefs.hpp:14,
                 from /opt/local/include/eigen3/../general/myadt.hpp:16,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/include/../linalg/../include/myadt.hpp:1,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/include/../linalg/linalg.hpp:23,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/include/linalg.hpp:1,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/nglib_gmsh.cpp:5:
/opt/local/include/core/ngcore_api.hpp:99:44: error: 'std::align_val_t' has not been declared
   99 | inline void * operator new (size_t s, std::align_val_t al)
      |                                            ^~~~~~~~~~~
In file included from /opt/local/include/core/exception.hpp:8,
                 from /opt/local/include/core/archive.hpp:22,
                 from /opt/local/include/core/ngcore.hpp:4,
                 from /opt/local/include/eigen3/../general/../include/mydefs.hpp:14,
                 from /opt/local/include/eigen3/../general/myadt.hpp:16,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/include/myadt.hpp:1,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/general/array.cpp:16:
/opt/local/include/core/ngcore_api.hpp:99:44: error: 'std::align_val_t' has not been declared
   99 | inline void * operator new (size_t s, std::align_val_t al)
      |                                            ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void* operator new(size_t, int)':
/opt/local/include/core/ngcore_api.hpp:101:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  101 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:107:46: error: 'std::align_val_t' has not been declared
  107 | inline void * operator new[] (size_t s, std::align_val_t al)
      |                                              ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void* operator new(size_t, int)':
/opt/local/include/core/ngcore_api.hpp:101:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  101 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:107:46: error: 'std::align_val_t' has not been declared
  107 | inline void * operator new[] (size_t s, std::align_val_t al)
      |                                              ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void* operator new [](size_t, int)':
/opt/local/include/core/ngcore_api.hpp:109:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  109 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:115:48: error: 'std::align_val_t' has not been declared
  115 | inline void operator delete  ( void* ptr, std::align_val_t al ) noexcept
      |                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void* operator new [](size_t, int)':
/opt/local/include/core/ngcore_api.hpp:109:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  109 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:115:48: error: 'std::align_val_t' has not been declared
  115 | inline void operator delete  ( void* ptr, std::align_val_t al ) noexcept
      |                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete(void*, int)':
/opt/local/include/core/ngcore_api.hpp:117:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  117 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:123:48: error: 'std::align_val_t' has not been declared
  123 | inline void operator delete[]( void* ptr, std::align_val_t al ) noexcept
      |                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete(void*, int)':
/opt/local/include/core/ngcore_api.hpp:117:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  117 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:123:48: error: 'std::align_val_t' has not been declared
  123 | inline void operator delete[]( void* ptr, std::align_val_t al ) noexcept
      |                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete [](void*, int)':
/opt/local/include/core/ngcore_api.hpp:125:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  125 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:131:64: error: 'std::align_val_t' has not been declared
  131 | inline void operator delete  ( void* ptr, std::size_t sz, std::align_val_t al ) noexcept
      |                                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete [](void*, int)':
/opt/local/include/core/ngcore_api.hpp:125:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  125 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:131:64: error: 'std::align_val_t' has not been declared
  131 | inline void operator delete  ( void* ptr, std::size_t sz, std::align_val_t al ) noexcept
      |                                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete(void*, std::size_t, int)':
/opt/local/include/core/ngcore_api.hpp:133:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  133 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:139:64: error: 'std::align_val_t' has not been declared
  139 | inline void operator delete[]( void* ptr, std::size_t sz, std::align_val_t al ) noexcept
      |                                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete(void*, std::size_t, int)':
/opt/local/include/core/ngcore_api.hpp:133:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  133 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:139:64: error: 'std::align_val_t' has not been declared
  139 | inline void operator delete[]( void* ptr, std::size_t sz, std::align_val_t al ) noexcept
      |                                                                ^~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete [](void*, std::size_t, int)':
/opt/local/include/core/ngcore_api.hpp:141:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  141 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete [](void*, std::size_t, int)':
/opt/local/include/core/ngcore_api.hpp:141:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  141 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /opt/local/include/core/archive.hpp:24:
/opt/local/include/core/type_traits.hpp: At global scope:
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
In file included from /opt/local/include/core/archive.hpp:24:
/opt/local/include/core/type_traits.hpp: At global scope:
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:9: error: invalid use of template-name 'std::enable_if_t' without an argument list
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |         ^~~
In file included from /opt/local/include/gcc13/c++/bits/stl_pair.h:60,
                 from /opt/local/include/gcc13/c++/bits/stl_algobase.h:64,
                 from /opt/local/include/gcc13/c++/bits/stl_tree.h:63,
                 from /opt/local/include/gcc13/c++/map:62,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/src/common/GmshMessage.h:9,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/nglib_gmsh.cpp:4:
/opt/local/include/gcc13/c++/type_traits:2610:11: note: 'template<bool _Cond, class _Tp> using std::enable_if_t = typename std::enable_if::type' declared here
 2610 |     using enable_if_t = typename enable_if<_Cond, _Tp>::type;
      |           ^~~~~~~~~~~
/opt/local/include/core/type_traits.hpp:51:25: error: expected initializer before '<' token
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                         ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:32: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                ^~~~~~~~~
      |                                is_same
/opt/local/include/core/type_traits.hpp:51:84: error: template argument 1 is invalid
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                                                                                    ^
/opt/local/include/core/type_traits.hpp:51:9: error: invalid use of template-name 'std::enable_if_t' without an argument list
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |         ^~~
In file included from /opt/local/include/gcc13/c++/bits/move.h:37,
                 from /opt/local/include/gcc13/c++/bits/exception_ptr.h:41,
                 from /opt/local/include/gcc13/c++/exception:164,
                 from /opt/local/include/gcc13/c++/ios:41,
                 from /opt/local/include/gcc13/c++/ostream:40,
                 from /opt/local/include/gcc13/c++/iostream:41,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/include/mystdlib.h:9,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/general/array.cpp:15:
/opt/local/include/gcc13/c++/type_traits:2610:11: note: 'template<bool _Cond, class _Tp> using std::enable_if_t = typename std::enable_if::type' declared here
 2610 |     using enable_if_t = typename enable_if<_Cond, _Tp>::type;
      |           ^~~~~~~~~~~
/opt/local/include/core/type_traits.hpp:51:25: error: expected initializer before '<' token
   51 |         std::enable_if_t<!std::is_same_v<decltype(std::declval<T2>().Range()), void>, std::true_type>
      |                         ^
In file included from /opt/local/include/core/exception.hpp:8,
                 from /opt/local/include/core/archive.hpp:22,
                 from /opt/local/include/core/ngcore.hpp:4,
                 from /opt/local/include/eigen3/../general/../include/mydefs.hpp:14,
                 from /opt/local/include/eigen3/../general/myadt.hpp:16,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/include/myadt.hpp:1,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_science_gmsh/gmsh/work/gmsh-4.12.2-source/contrib/Netgen/libsrc/general/bitarray.cpp:12:
/opt/local/include/core/ngcore_api.hpp:99:44: error: 'std::align_val_t' has not been declared
   99 | inline void * operator new (size_t s, std::align_val_t al)
      |                                            ^~~~~~~~~~~
In file included from /opt/local/include/core/archive.hpp:25:
/opt/local/include/core/utils.hpp:101:42: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                                          ^~~~~~~~~~
      |                                          system
/opt/local/include/core/utils.hpp:101:59: error: expected unqualified-id before '&' token
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                                                           ^
/opt/local/include/core/utils.hpp:101:58: error: expected ')' before '&' token
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                             ~                            ^~
      |                                                          )
/opt/local/include/core/utils.hpp:101:61: error: expected initializer before 'p'
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                                                             ^
/opt/local/include/core/utils.hpp:265:48: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                ^~~~~~~~~
      |                                                is_same
/opt/local/include/core/utils.hpp:265:48: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                ^~~~~~~~~
      |                                                is_same
/opt/local/include/core/utils.hpp:265:72: error: template argument 1 is invalid
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                                        ^~
/opt/local/include/core/utils.hpp:265:87: error: wrong number of template arguments (3, should be at least 1)
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                                                       ^
/opt/local/include/core/utils.hpp:260:12: note: provided for 'template<class T, class Enable> struct ngcore::detail::IsIC_trait'
  260 |     struct IsIC_trait {
      |            ^~~~~~~~~~
/opt/local/include/core/utils.hpp:265:89: error: expected unqualified-id before '>' token
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                                                         ^
/opt/local/include/core/utils.hpp:348:19: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
  348 |   NGCORE_API std::filesystem::path GetTempFilename();
      |                   ^~~~~~~~~~
      |                   system
/opt/local/include/core/ngcore_api.hpp: In function 'void* operator new(size_t, int)':
/opt/local/include/core/ngcore_api.hpp:101:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  101 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:107:46: error: 'std::align_val_t' has not been declared
  107 | inline void * operator new[] (size_t s, std::align_val_t al)
      |                                              ^~~~~~~~~~~
/opt/local/include/core/archive.hpp: In function 'T* ngcore::detail::constructIfPossible(std::tuple<_Args2 ...>)':
/opt/local/include/core/archive.hpp:68:25: error: 'is_constructible_v' is not a member of 'std'; did you mean 'is_constructible'?
   68 |       if constexpr(std::is_constructible_v<T, TArgs...>)
      |                         ^~~~~~~~~~~~~~~~~~
      |                         is_constructible
/opt/local/include/core/archive.hpp:68:45: error: expected primary-expression before ',' token
   68 |       if constexpr(std::is_constructible_v<T, TArgs...>)
      |                                             ^
/opt/local/include/core/archive.hpp:68:52: error: expected primary-expression before '...' token
   68 |       if constexpr(std::is_constructible_v<T, TArgs...>)
      |                                                    ^~~
/opt/local/include/core/archive.hpp:68:52: error: expected ')' before '...' token
   68 |       if constexpr(std::is_constructible_v<T, TArgs...>)
      |                   ~                                ^~~
      |                                                    )
/opt/local/include/core/archive.hpp: In function 'T* ngcore::detail::constructIfPossible()':
/opt/local/include/core/archive.hpp:76:25: error: 'is_constructible_v' is not a member of 'std'; did you mean 'is_constructible'?
   76 |       if constexpr(std::is_constructible_v<T>)
      |                         ^~~~~~~~~~~~~~~~~~
      |                         is_constructible
/opt/local/include/core/archive.hpp:76:45: error: expected primary-expression before '>' token
   76 |       if constexpr(std::is_constructible_v<T>)
      |                                             ^
/opt/local/include/core/archive.hpp:76:46: error: expected primary-expression before ')' token
   76 |       if constexpr(std::is_constructible_v<T>)
      |                                              ^
/opt/local/include/core/archive.hpp: At global scope:
/opt/local/include/core/archive.hpp:238:40: error: 'std::byte' has not been declared
  238 |     virtual Archive & operator & (std::byte & d) = 0;
      |                                        ^~~~
/opt/local/include/core/archive.hpp:241:23: error: 'virtual ngcore::Archive& ngcore::Archive::operator&(int&)' cannot be overloaded with 'virtual ngcore::Archive& ngcore::Archive::operator&(int&)'
  241 |     virtual Archive & operator & (int & i) = 0;
      |                       ^~~~~~~~
/opt/local/include/core/archive.hpp:238:23: note: previous declaration 'virtual ngcore::Archive& ngcore::Archive::operator&(int&)'
  238 |     virtual Archive & operator & (std::byte & d) = 0;
      |                       ^~~~~~~~
/opt/local/include/core/archive.hpp:355:30: error: 'std::optional' has not been declared
  355 |     Archive& operator& (std::optional<T>& opt)
      |                              ^~~~~~~~
/opt/local/include/core/archive.hpp:355:38: error: expected ',' or '...' before '<' token
  355 |     Archive& operator& (std::optional<T>& opt)
      |                                      ^
/opt/local/include/core/archive.hpp:398:32: error: 'std::byte' has not been declared
  398 |     virtual Archive & Do (std::byte * d, size_t n)
      |                                ^~~~
/opt/local/include/core/archive.hpp:404:23: error: 'virtual ngcore::Archive& ngcore::Archive::Do(int*, size_t)' cannot be overloaded with 'virtual ngcore::Archive& ngcore::Archive::Do(int*, size_t)'
  404 |     virtual Archive & Do (int * i, size_t n)
      |                       ^~
/opt/local/include/core/archive.hpp:398:23: note: previous declaration 'virtual ngcore::Archive& ngcore::Archive::Do(int*, size_t)'
  398 |     virtual Archive & Do (std::byte * d, size_t n)
      |                       ^~
/opt/local/include/core/archive.hpp:458:38: error: 'std::byte' has not been declared
  458 |       constexpr void CopyToBin (std::byte * ptr, T & first, Trest & ...rest) const
      |                                      ^~~~
/opt/local/include/core/archive.hpp:463:36: error: 'std::byte' has not been declared
  463 |     constexpr void CopyToBin (std::byte * ptr) const { }
      |                                    ^~~~
/opt/local/include/core/archive.hpp:466:40: error: 'std::byte' has not been declared
  466 |       constexpr void CopyFromBin (std::byte * ptr, T & first, Trest & ...rest) const
      |                                        ^~~~
/opt/local/include/core/archive.hpp:471:38: error: 'std::byte' has not been declared
  471 |     constexpr void CopyFromBin (std::byte * ptr) const { }
      |                                      ^~~~
/opt/local/include/core/ngcore_api.hpp: In function 'void* operator new [](size_t, int)':
/opt/local/include/core/ngcore_api.hpp:109:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  109 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:115:48: error: 'std::align_val_t' has not been declared
  115 | inline void operator delete  ( void* ptr, std::align_val_t al ) noexcept
      |                                                ^~~~~~~~~~~
/opt/local/include/core/archive.hpp: In member function 'ngcore::Archive& ngcore::Archive::operator&(int)':
/opt/local/include/core/archive.hpp:357:26: error: 'opt' was not declared in this scope
  357 |         bool has_value = opt.has_value();
      |                          ^~~
/opt/local/include/core/archive.hpp: In member function 'ngcore::Archive& ngcore::Archive::DoPacked(Types& ...)':
/opt/local/include/core/archive.hpp:439:16: error: 'byte' is not a member of 'std'
  439 |           std::byte mem[totsize];
      |                ^~~~
/opt/local/include/core/archive.hpp:439:16: note: 'std::byte' is only available from C++17 onwards
/opt/local/include/core/archive.hpp:442:27: error: 'mem' was not declared in this scope
  442 |               CopyToBin (&mem[0], args...);
      |                           ^~~
/opt/local/include/core/archive.hpp:447:19: error: 'mem' was not declared in this scope
  447 |               Do(&mem[0], totsize);
      |                   ^~~
/opt/local/include/core/archive.hpp: In member function 'ngcore::Archive& ngcore::Archive::operator&(std::tuple<_Args1 ...>&)':
/opt/local/include/core/archive.hpp:698:12: error: 'apply' is not a member of 'std'
  698 |       std::apply([this](auto&... arg) { std::make_tuple(((*this) & arg).IsParallel()...);}, t);
      |            ^~~~~
/opt/local/include/core/archive.hpp:698:12: note: 'std::apply' is only available from C++17 onwards
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete(void*, int)':
/opt/local/include/core/ngcore_api.hpp:117:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  117 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:123:48: error: 'std::align_val_t' has not been declared
  123 | inline void operator delete[]( void* ptr, std::align_val_t al ) noexcept
      |                                                ^~~~~~~~~~~
/opt/local/include/core/archive.hpp: At global scope:
/opt/local/include/core/archive.hpp:829:33: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
  829 |     BinaryOutArchive(const std::filesystem::path& filename)
      |                                 ^~~~~~~~~~
      |                                 system
/opt/local/include/core/archive.hpp:829:49: error: expected unqualified-id before '&' token
  829 |     BinaryOutArchive(const std::filesystem::path& filename)
      |                                                 ^
/opt/local/include/core/archive.hpp:829:49: error: expected ')' before '&' token
  829 |     BinaryOutArchive(const std::filesystem::path& filename)
      |                     ~                           ^
      |                                                 )
/opt/local/include/core/archive.hpp:829:49: error: constructors may not be ref-qualified
/opt/local/include/core/archive.hpp:829:49: error: expected ';' at end of member declaration
  829 |     BinaryOutArchive(const std::filesystem::path& filename)
      |                                                 ^
      |                                                  ;
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete [](void*, int)':
/opt/local/include/core/ngcore_api.hpp:125:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  125 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:131:64: error: 'std::align_val_t' has not been declared
  131 | inline void operator delete  ( void* ptr, std::size_t sz, std::align_val_t al ) noexcept
      |                                                                ^~~~~~~~~~~
/opt/local/include/core/archive.hpp:829:51: error: 'filename' does not name a type
  829 |     BinaryOutArchive(const std::filesystem::path& filename)
      |                                                   ^~~~~~~~
/opt/local/include/core/archive.hpp:837:32: error: 'std::byte' has not been declared
  837 |     Archive & operator & (std::byte & d) override
      |                                ^~~~
/opt/local/include/core/archive.hpp:843:15: error: 'ngcore::Archive& ngcore::BinaryOutArchive::operator&(int&)' cannot be overloaded with 'ngcore::Archive& ngcore::BinaryOutArchive::operator&(int&)'
  843 |     Archive & operator & (int & i) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp:837:15: note: previous declaration 'ngcore::Archive& ngcore::BinaryOutArchive::operator&(int&)'
  837 |     Archive & operator & (std::byte & d) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp:894:24: error: 'std::byte' has not been declared
  894 |     Archive & Do (std::byte * d, size_t n) override
      |                        ^~~~
/opt/local/include/core/archive.hpp: In member function 'virtual ngcore::Archive& ngcore::BinaryOutArchive::Do(int*, size_t)':
/opt/local/include/core/archive.hpp:897:63: error: 'byte' is not a member of 'std'
  897 |       stream->write(reinterpret_cast<char*>(d), n*sizeof(std::byte)); return *this;
      |                                                               ^~~~
/opt/local/include/core/archive.hpp:897:63: note: 'std::byte' is only available from C++17 onwards
/opt/local/include/core/archive.hpp: At global scope:
/opt/local/include/core/archive.hpp:925:33: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
  925 |     BinaryInArchive (const std::filesystem::path& filename)
      |                                 ^~~~~~~~~~
      |                                 system
/opt/local/include/core/archive.hpp:925:49: error: expected unqualified-id before '&' token
  925 |     BinaryInArchive (const std::filesystem::path& filename)
      |                                                 ^
/opt/local/include/core/archive.hpp:925:49: error: expected ')' before '&' token
  925 |     BinaryInArchive (const std::filesystem::path& filename)
      |                     ~                           ^
      |                                                 )
/opt/local/include/core/archive.hpp:925:49: error: constructors may not be ref-qualified
/opt/local/include/core/archive.hpp:925:49: error: expected ';' at end of member declaration
  925 |     BinaryInArchive (const std::filesystem::path& filename)
      |                                                 ^
      |                                                  ;
/opt/local/include/core/archive.hpp:925:51: error: 'filename' does not name a type
  925 |     BinaryInArchive (const std::filesystem::path& filename)
      |                                                   ^~~~~~~~
/opt/local/include/core/archive.hpp:929:32: error: 'std::byte' has not been declared
  929 |     Archive & operator & (std::byte & d) override
      |                                ^~~~
/opt/local/include/core/archive.hpp:935:15: error: 'ngcore::Archive& ngcore::BinaryInArchive::operator&(int&)' cannot be overloaded with 'ngcore::Archive& ngcore::BinaryInArchive::operator&(int&)'
  935 |     Archive & operator & (int & i) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp:929:15: note: previous declaration 'ngcore::Archive& ngcore::BinaryInArchive::operator&(int&)'
  929 |     Archive & operator & (std::byte & d) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp:993:24: error: 'std::byte' has not been declared
  993 |     Archive & Do (std::byte * d, size_t n) override
      |                        ^~~~
/opt/local/include/core/archive.hpp:997:15: error: 'ngcore::Archive& ngcore::BinaryInArchive::Do(int*, size_t)' cannot be overloaded with 'ngcore::Archive& ngcore::BinaryInArchive::Do(int*, size_t)'
  997 |     Archive & Do (int * i, size_t n) override
      |               ^~
/opt/local/include/core/archive.hpp:993:15: note: previous declaration 'ngcore::Archive& ngcore::BinaryInArchive::Do(int*, size_t)'
  993 |     Archive & Do (std::byte * d, size_t n) override
      |               ^~
/opt/local/include/core/archive.hpp: In member function 'virtual ngcore::Archive& ngcore::BinaryInArchive::Do(int*, size_t)':
/opt/local/include/core/archive.hpp:994:62: error: 'byte' is not a member of 'std'
  994 |     { stream->read(reinterpret_cast<char*>(d), n*sizeof(std::byte)); return *this; } // NOLINT
      |                                                              ^~~~
/opt/local/include/core/archive.hpp:994:62: note: 'std::byte' is only available from C++17 onwards
/opt/local/include/core/archive.hpp: At global scope:
/opt/local/include/core/archive.hpp:1025:32: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
 1025 |     TextOutArchive (const std::filesystem::path& filename) :
      |                                ^~~~~~~~~~
      |                                system
/opt/local/include/core/archive.hpp:1025:48: error: expected unqualified-id before '&' token
 1025 |     TextOutArchive (const std::filesystem::path& filename) :
      |                                                ^
/opt/local/include/core/archive.hpp:1025:48: error: expected ')' before '&' token
 1025 |     TextOutArchive (const std::filesystem::path& filename) :
      |                    ~                           ^
      |                                                )
/opt/local/include/core/archive.hpp:1025:48: error: constructors may not be ref-qualified
/opt/local/include/core/archive.hpp:1025:48: error: expected ';' at end of member declaration
 1025 |     TextOutArchive (const std::filesystem::path& filename) :
      |                                                ^
      |                                                 ;
/opt/local/include/core/archive.hpp:1025:50: error: 'filename' does not name a type
 1025 |     TextOutArchive (const std::filesystem::path& filename) :
      |                                                  ^~~~~~~~
/opt/local/include/core/archive.hpp:1029:32: error: 'std::byte' has not been declared
 1029 |     Archive & operator & (std::byte & d) override
      |                                ^~~~
/opt/local/include/core/archive.hpp:1035:15: error: 'ngcore::Archive& ngcore::TextOutArchive::operator&(int&)' cannot be overloaded with 'ngcore::Archive& ngcore::TextOutArchive::operator&(int&)'
 1035 |     Archive & operator & (int & i) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp:1029:15: note: previous declaration 'ngcore::Archive& ngcore::TextOutArchive::operator&(int&)'
 1029 |     Archive & operator & (std::byte & d) override
      |               ^~~~~~~~
In file included from /opt/local/include/core/archive.hpp:25:
/opt/local/include/core/utils.hpp:101:42: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                                          ^~~~~~~~~~
      |                                          system
/opt/local/include/core/utils.hpp:101:59: error: expected unqualified-id before '&' token
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                                                           ^
/opt/local/include/core/utils.hpp:101:58: error: expected ')' before '&' token
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                             ~                            ^~
      |                                                          )
/opt/local/include/core/utils.hpp:101:61: error: expected initializer before 'p'
  101 |   inline std::string ToLower( const std::filesystem::path & p )
      |                                                             ^
/opt/local/include/core/ngcore_api.hpp: In function 'void operator delete(void*, std::size_t, int)':
/opt/local/include/core/ngcore_api.hpp:133:17: error: '__STDCPP_DEFAULT_NEW_ALIGNMENT__' was not declared in this scope
  133 |   if (int(al) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/core/ngcore_api.hpp: At global scope:
/opt/local/include/core/ngcore_api.hpp:139:64: error: 'std::align_val_t' has not been declared
  139 | inline void operator delete[]( void* ptr, std::size_t sz, std::align_val_t al ) noexcept
      |                                                                ^~~~~~~~~~~
/opt/local/include/core/utils.hpp:265:48: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                ^~~~~~~~~
      |                                                is_same
/opt/local/include/core/utils.hpp:265:48: error: 'is_same_v' is not a member of 'std'; did you mean 'is_same'?
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                ^~~~~~~~~
      |                                                is_same
/opt/local/include/core/utils.hpp:265:72: error: template argument 1 is invalid
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                                        ^~
/opt/local/include/core/utils.hpp:265:87: error: wrong number of template arguments (3, should be at least 1)
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                                                       ^
/opt/local/include/core/utils.hpp:260:12: note: provided for 'template<class T, class Enable> struct ngcore::detail::IsIC_trait'
  260 |     struct IsIC_trait {
      |            ^~~~~~~~~~
/opt/local/include/core/utils.hpp:265:89: error: expected unqualified-id before '>' token
  265 |     struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
      |                                                                                         ^
/opt/local/include/core/utils.hpp:348:19: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
  348 |   NGCORE_API std::filesystem::path GetTempFilename();
      |                   ^~~~~~~~~~
      |                   system
/opt/local/include/core/archive.hpp:1080:31: error: 'filesystem' in namespace 'std' does not name a type; did you mean 'system'?
 1080 |     TextInArchive (const std::filesystem::path& filename)
      |                               ^~~~~~~~~~
      |                               system
/opt/local/include/core/archive.hpp:1080:47: error: expected unqualified-id before '&' token
 1080 |     TextInArchive (const std::filesystem::path& filename)
      |                                               ^
/opt/local/include/core/archive.hpp:1080:47: error: expected ')' before '&' token
 1080 |     TextInArchive (const std::filesystem::path& filename)
      |                   ~                           ^
      |                                               )
/opt/local/include/core/archive.hpp:1080:47: error: constructors may not be ref-qualified
/opt/local/include/core/archive.hpp:1080:47: error: expected ';' at end of member declaration
 1080 |     TextInArchive (const std::filesystem::path& filename)
      |                                               ^
      |                                                ;
/opt/local/include/core/archive.hpp:1080:49: error: 'filename' does not name a type
 1080 |     TextInArchive (const std::filesystem::path& filename)
      |                                                 ^~~~~~~~
/opt/local/include/core/archive.hpp:1084:32: error: 'std::byte' has not been declared
 1084 |     Archive & operator & (std::byte & d) override
      |                                ^~~~
/opt/local/include/core/archive.hpp:1090:15: error: 'ngcore::Archive& ngcore::TextInArchive::operator&(int&)' cannot be overloaded with 'ngcore::Archive& ngcore::TextInArchive::operator&(int&)'
 1090 |     Archive & operator & (int & i) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp:1084:15: note: previous declaration 'ngcore::Archive& ngcore::TextInArchive::operator&(int&)'
 1084 |     Archive & operator & (std::byte & d) override
      |               ^~~~~~~~
/opt/local/include/core/archive.hpp: In member function 'virtual ngcore::Archive& ngcore::TextInArchive::operator&(int&)':
/opt/local/include/core/archive.hpp:1085:41: error: 'byte' is not a member of 'std'
 1085 |     { int tmp; *stream >> tmp; d = std::byte(tmp); return *this; }
      |                                         ^~~~
/opt/local/include/core/archive.hpp:1085:41: note: 'std::byte' is only available from C++17 onwards
/opt/local/include/core/archive.hpp: In function 'T* ngcore::detail::constructIfPossible(std::tuple<_Types ...>)':
/opt/local/include/core/archive.hpp:68:25: error: 'is_constructible_v' is not a member of 'std'; did you mean 'is_constructible'?
   68 |       if constexpr(std::is_constructible_v<T, TArgs...>)
      |                         ^~~~~~~~~~~~~~~~~~
      |                         is_constructible