Hello, Qt Creator 4.3.1 Based on Qt 5.9.1 gcc version 5.3.0 Trying to use Boost in my program. I’m getting the following compile errors. Any suggestions, Please. Regards In file included from C:\boost\boost_1_64_0/boost/numeric/ublas/vector.hpp:21:0, from C:\boost\boost_1_64_0/boost/numeric/ublas/matrix.hpp:18, from lib\math/lc_quadratic.h:30, from lib\engine\rs_arc.cpp:37: C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp: In member function 'void boost::numeric::ublas::unbounded_array<T, ALLOC>::serialize(Archive&, unsigned int)': C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp:299:18: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, s); ^ C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp: In member function 'void boost::numeric::ublas::bounded_array<T, N, ALLOC>::serialize(Archive&, unsigned int)': C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp:494:18: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, s); ^ In file included from C:\boost\boost_1_64_0/boost/numeric/ublas/vector.hpp:21:0, from C:\boost\boost_1_64_0/boost/numeric/ublas/matrix.hpp:18, from lib\math/lc_quadratic.h:30, from lib\engine\rs_circle.cpp:42: C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp: In member function 'void boost::numeric::ublas::unbounded_array<T, ALLOC>::serialize(Archive&, unsigned int)': C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp:299:18: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, s); ^ C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp: In member function 'void boost::numeric::ublas::bounded_array<T, N, ALLOC>::serialize(Archive&, unsigned int)': C:\boost\boost_1_64_0/boost/numeric/ublas/storage.hpp:494:18: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, s); ^ In file included from lib\math/lc_quadratic.h:30:0, from lib\engine\rs_circle.cpp:42: C:\boost\boost_1_64_0/boost/numeric/ublas/matrix.hpp: In member function 'void boost::numeric::ublas::c_matrix<T, M, N>::serialize(Archive&, unsigned int)': C:\boost\boost_1_64_0/boost/numeric/ublas/matrix.hpp:5977:18: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, N); ^