lsr.cpp:(.text+0x168): referencia a `std::filesystem::__cxx11::directory_iterator::operator*() const' sin definir
lsr.cpp:(.text+0x1b1): referencia a `std::filesystem::__cxx11::directory_iterator::operator++()' sin definir
lsr.o: En la función `std::filesystem::__cxx11::directory_iterator::directory_iterator(std::filesystem::__cxx11::path const&)':
lsr.cpp:(.text._ZNSt10filesystem7__cxx1118directory_iteratorC2ERKNS0_4pathE[_ZNSt10filesystem7__cxx1118directory_iteratorC5ERKNS0_4pathE]+0x26): referencia a `std::filesystem::__cxx11::directory_iterator::directory_iterator(std::filesystem::__cxx11::path const&, std::filesystem::directory_options, std::error_code*)' sin definir
lsr.o: En la función `std::filesystem::__cxx11::path::path<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::filesystem::__cxx11::path>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::filesystem::__cxx11::path::format)':
lsr.cpp:(.text._ZNSt10filesystem7__cxx114pathC2INSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES1_EERKT_NS1_6formatE[_ZNSt10filesystem7__cxx114pathC5INSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES1_EERKT_NS1_6formatE]+0x73): referencia a `std::filesystem::__cxx11::path::_M_split_cmpts()' sin definir
collect2: error: ld devolvió el estado de salida 1
make: *** [makefile:7: lsr] Error 1