d.vetutnev@dx:~/tst$ gcc main.cpp -o main
/tmp/cchDp0LC.o: In function `main':
main.cpp:(.text+0x28): undefined reference to `std::cout'
main.cpp:(.text+0x32): 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> >&)'
main.cpp:(.text+0x3a): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
/tmp/cchDp0LC.o: In function `operator<<(std::ostream&, MyString const&)':
main.cpp:(.text+0x67): 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*)'
/tmp/cchDp0LC.o: In function `__static_initialization_and_destruction_0(int, int)':
main.cpp:(.text+0x94): undefined reference to `std::ios_base::Init::Init()'
main.cpp:(.text+0xa3): undefined reference to `std::ios_base::Init::~Init()'
collect2: error: ld returned 1 exit status
d.vetutnev@dx:~/tst$ g++ main.cpp -o main
d.vetutnev@dx:~/tst$ ./main
MyString
d.vetutnev@dx:~/tst$ gcc main.cpp -lstdc++ -o main
d.vetutnev@dx:~/tst$ ./main
MyString
d.vetutnev@dx:~/tst$