Mine
public cpp v1 · immutable/usr/lib64/gcc/x86_64-t2-linux-gnu/4.1.1/../../../../lib64/libid3.so: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::append(char const*, unsigned long)'/usr/lib64/gcc/x86_64-t2-linux-gnu/4.1.1/../../../../lib64/libid3.so: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::append(char const*, unsigned long)'