Im trying to connect mysql database with qt and i got this error :

main.obj:-1: error: LNK2019: unresolved external symbol “__declspec(dllimport) public: __thiscall QSqlDatabase::~QSqlDatabase(void)” (__imp_??1QSqlDatabase@@QAE@XZ) referenced in function “bool __cdecl lidhDatabase(void)” (?lidhDatabase@@YA_NXZ)