使用 <filesystem> C++17 时出错

我正在尝试搜索一个目录，并以非平台依赖性方式列出该目录中的所有条目。为此，我尝试使用std ::文件系统，但是，尝试使用在此处定义的函数时，我有很多编译错误。

这是我要运行的示例代码(编辑：即使我删除for循环并离开"返回0"，我也会得到相同的错误(：

#include <iostream>
#include <string>
#include <filesystem>
int main()
{
   for (const auto & entry : std::filesystem::directory_iterator("D:\fac_2ano2semestre"))
        std::cout << entry.path() << std::endl;
    return 0;
}

这是G 的输出：

g++.exe (x86_64-posix-seh-rev0, Built by MinGW-W64 project) 8.1.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

这是我的makefile的样本(我也尝试了-lstdc fs(：

# Compiler
CXX := g++
# Add whatever compiler flags you want.
CXXFLAGS := -std=c++17 
CXXFLAGS += -Wall -g 
# You MUST keep this for auto-dependency generation.
CXXFLAGS += -MMD

我收到的一小部分错误：

g++ -std=c++17  -Wall -g  -MMD   -c -o src/app.o src/app.cpp
In file included from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/filesystem:37,
                 from src/app.cpp:3:
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/fs_path.h: In member function 'std::filesystem::__cxx11::path& std::filesystem::__cxx11::path::operator/=(const std::filesystem::__cxx11::path&)':
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/fs_path.h:237:47: error: no match for 'operator!=' (operand types are 'std::filesystem::__cxx11::path' and 'std::filesystem::__cxx11::path')
    || (__p.has_root_name() && __p.root_name() != root_name()))
                               ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
In file included from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/iosfwd:40,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/ios:38,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/ostream:38,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/iostream:39,
                 from src/app.cpp:1:
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/postypes.h:221:5: note: candidate: 'template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&)'
     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
     ^~~~~~~~
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/postypes.h:221:5: note:   template argument deduction/substitution failed:
In file included from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/filesystem:37,
                 from src/app.cpp:3:
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/fs_path.h:237:60: note:   'std::filesystem::__cxx11::path' is not derived from 'const std::fpos<_StateT>'
    || (__p.has_root_name() && __p.root_name() != root_name()))
                                                            ^
In file included from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_algobase.h:64,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/char_traits.h:39,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/ios:40,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/ostream:38,
                 from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/iostream:39,
                 from src/app.cpp:1:
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_pair.h:456:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^~~~~~~~
D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_pair.h:456:5: note:   template argument deduction/substitution failed:
In file included from D:/mingw/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/filesystem:37,
                 from src/app.cpp:3: