铿锵++ 4.0.0编译错误在Windows中

我在Windows 10（32位操作系统，x86处理器）上使用从源代码编译的clang 4.0.0。 我试图编译我的cpp代码为llvm格式为ll的代码。 这是一个示例代码，无法使用clang进行编译：

#include <windows.h> #include <tlhelp32.h> #include <fstream> #include <mapi.h> #include <memory> #include<stdio.h> /* Function to calculate x raised to the power y */ int power(int x, unsigned int y) { if (y == 0) return 1; else if (y%2 == 0) return power(x, y/2)*power(x, y/2); else return x*power(x, y/2)*power(x, y/2); } /* Program to test function power */ int main() { int x = 2; unsigned int y = 3; printf("%d", power(x, y)); return 0; } 

这只是一个示例代码，但是在包含列出的头文件的所有c ++代码中都是相同的行为。 我使用下面的命令将其编译为llvm ir代码：

 clang++ -S -emit-llvm assiral.cpp -o assiral.ll 

在编译时，我得到以下错误：

 C:\Sample>clang++ -emit-llvm -S assiral.cpp -o assiral.ll In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:7: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\cmath:617: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtgmath.h:9: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:204:22: error: use of undeclared identifier 'char16_t' struct _Is_integral<char16_t> ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:210:22: error: use of undeclared identifier 'char32_t' struct _Is_integral<char32_t> ^ In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\exception:7: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\type_traits:6: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstddef:257:2: error: 'auto' return without trailing return type; deduced return types are a C++14 extension auto _Unfancy(_Ptrty _Ptr) ^ In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:8: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:612:33: error: use of undeclared identifier 'char16_t' template<> class numeric_limits<char16_t> ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:902:33: error: use of undeclared identifier 'char32_t' template<> class numeric_limits<char32_t> ^ In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\utility:7: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\iosfwd:254:21: error: use of undeclared identifier 'char16_t' struct char_traits<char16_t> ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\iosfwd:263:21: error: use of undeclared identifier 'char32_t' struct char_traits<char32_t> ^ In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:10: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:698:2: error: 'auto' return without trailing return type; deduced return types are a C++14 extension auto _Unchecked_n(_Iter _Src, _Diff) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:742:2: error: 'auto' return without trailing return type; deduced return types are a C++14 extension auto _Unchecked_n_backward(_Iter _Src, _Diff) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:1142:12: error: deduced return types are a C++14 extension constexpr decltype(auto) _Operator_arrow(_Iterator&& _Target, false_type) ^ In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:356:2: error: 'auto' return without trailing return type; deduced return types are a C++14 extension auto _Const_cast(_Ptrty _Ptr) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:366:2: error: 'auto' return without trailing return type; deduced return types are a C++14 extension auto _Const_cast(_Ty * _Ptr) ^ In file included from assiral.cpp:3: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8: In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7: C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:75:2: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Start_at; ; ++_Match_try) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:119:3: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - _Needle_size); ; --_Match_try) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:144:3: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - 1); ; --_Match_try) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:169:3: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:188:3: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - 1); ; --_Match_try) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:213:3: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try) ^ C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:233:3: error: statement not allowed in constexpr function for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try) ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. 

运行命令后我期望的是生成字节码文件（.ll文件）。 我见过很多post，他们引入了一个标志：'-fms-compatibility-version = 19'以及命令。 然而，添加的标志被标记为未知参数。 我正在使用MSVS 2017.也许我错误地使用了这个标志。 但是我现在已经陷入了一天的僵局。 任何帮助或build议将不胜感激。

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 C:\Program Files\Microsoft Visual Studio 14.0\VC\lib