Stuff

/tmp/ccUvBN7S.o: In function `main':
hey_world.cpp:(.text+0x14): undefined reference to `std::cout'
hey_world.cpp:(.text+0x19): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
hey_world.cpp:(.text+0x21): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
hey_world.cpp:(.text+0x29): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccUvBN7S.o: In function `__static_initialization_and_destruction_0(int, int)':
hey_world.cpp:(.text+0x51): undefined reference to `std::ios_base::Init::Init()'
hey_world.cpp:(.text+0x56): undefined reference to `std::ios_base::Init::~Init()'
collect2: ld returned 1 exit status