Build issue: Invalid use of incomplete type

[mechgt]

I'm getting an error when trying to build (see below). This same error (invalid use of incomplete type) is repeated across many files. Any idea?

┌──(kali㉿kali)-[~/ropium]
└─$ make 
g++ -O2 -Wno-narrowing `python3-config --cflags` -DPYTHON_BINDINGS -Ibindings/python -std=c++11 -fpermissive -fPIC -I ./libropium/include -I ./libropium/dependencies/murmur3 -Wno-write-strings -Wno-sign-compare -Wno-reorder  -c libropium/database/database.cpp -o libropium/database/database.o -lcapstone `python3-config --libs`
In file included from libropium/database/database.cpp:1:

./libropium/include/database.hpp: In instantiation of ‘bool BaseDB<K>::_check_key_match(const K&, const K&, bool*, int) [with K = std::tuple<short unsigned int, short unsigned int>]’:
./libropium/include/database.hpp:109:39:   required from ‘PossibleGadgets* BaseDB<K>::get_possible(K, bool*, int) [with K = std::tuple<short unsigned int, short unsigned int>]’
libropium/database/database.cpp:316:32:   required from here
./libropium/include/database.hpp:95:33: error: invalid use of incomplete type ‘struct std::array<long int, 2>’
   95 |         auto a1 = tuple_to_array(key1);
      |                   ~~~~~~~~~~~~~~^~~~~~
In file included from ./libropium/include/database.hpp:5:
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 2>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
./libropium/include/database.hpp:96:33: error: invalid use of incomplete type ‘struct std::array<long int, 2>’
   96 |         auto a2 = tuple_to_array(key2);
      |                   ~~~~~~~~~~~~~~^~~~~~
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 2>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
In file included from ./libropium/include/database.hpp:7:
./libropium/include/utils.hpp: In instantiation of ‘std::vector<long int> tuple_to_vector(Tuple&&) [with Tuple = const std::tuple<short unsigned int, short unsigned int>&]’:
./libropium/include/database.hpp:110:52:   required from ‘PossibleGadgets* BaseDB<K>::get_possible(K, bool*, int) [with K = std::tuple<short unsigned int, short unsigned int>]’
libropium/database/database.cpp:316:32:   required from here
./libropium/include/utils.hpp:127:32: error: invalid use of incomplete type ‘struct std::array<long int, 2>’
  127 |     auto array = tuple_to_array(tuple);
      |                  ~~~~~~~~~~~~~~^~~~~~~
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 2>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
./libropium/include/database.hpp: In instantiation of ‘bool BaseDB<K>::_check_key_match(const K&, const K&, bool*, int) [with K = std::tuple<short unsigned int, short unsigned int, int, short unsigned int>]’:
./libropium/include/database.hpp:109:39:   required from ‘PossibleGadgets* BaseDB<K>::get_possible(K, bool*, int) [with K = std::tuple<short unsigned int, short unsigned int, int, short unsigned int>]’
libropium/database/database.cpp:320:33:   required from here
./libropium/include/database.hpp:95:33: error: invalid use of incomplete type ‘struct std::array<long int, 4>’
   95 |         auto a1 = tuple_to_array(key1);
      |                   ~~~~~~~~~~~~~~^~~~~~
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 4>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
./libropium/include/database.hpp:96:33: error: invalid use of incomplete type ‘struct std::array<long int, 4>’
   96 |         auto a2 = tuple_to_array(key2);
      |                   ~~~~~~~~~~~~~~^~~~~~
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 4>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
./libropium/include/utils.hpp: In instantiation of ‘std::vector<long int> tuple_to_vector(Tuple&&) [with Tuple = const std::tuple<short unsigned int, short unsigned int, int, short unsigned int>&]’:
./libropium/include/database.hpp:110:52:   required from ‘PossibleGadgets* BaseDB<K>::get_possible(K, bool*, int) [with K = std::tuple<short unsigned int, short unsigned int, int, short unsigned int>]’
libropium/database/database.cpp:320:33:   required from here
./libropium/include/utils.hpp:127:32: error: invalid use of incomplete type ‘struct std::array<long int, 4>’
  127 |     auto array = tuple_to_array(tuple);
      |                  ~~~~~~~~~~~~~~^~~~~~~
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 4>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
./libropium/include/database.hpp: In instantiation of ‘bool BaseDB<K>::_check_key_match(const K&, const K&, bool*, int) [with K = std::tuple<short unsigned int, long int>]’:
./libropium/include/database.hpp:109:39:   required from ‘PossibleGadgets* BaseDB<K>::get_possible(K, bool*, int) [with K = std::tuple<short unsigned int, long int>]’
libropium/database/database.cpp:324:32:   required from here
./libropium/include/database.hpp:95:33: error: invalid use of incomplete type ‘struct std::array<long int, 2>’
   95 |         auto a1 = tuple_to_array(key1);
      |                   ~~~~~~~~~~~~~~^~~~~~
/usr/include/c++/12/tuple:1595:45: note: declaration of ‘struct std::array<long int, 2>’
 1595 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
...
make: *** [Makefile:83: libropium/database/database.o] Error 1

[mechgt]

Adding #include <array> to the database.hpp file seems to have fixed this for me.