logo标签列表

Windows 8.1上使用clang-cl编译出现错误

c++windowscompilation64-bitclang
4
我刚开始在Windows上使用clang-cl 3.7。 我尝试通过Visual Studio 2015和命令行在WIN8.1机器上编译我的代码。不用说，在同一个cmd窗口中，我使用了vsvarsall并选择了amd64选项。
以下是我的代码：
#define UNICODE
#include <Windows.h>
#include <iostream>

 int main() {

 int a = 0;
 if(0)
__asm _emit 0xE8
else
a=3;

if (IsDebuggerPresent())
MessageBox(
    NULL,
    (LPCWSTR)L"Debugger detected!!",
    (LPCWSTR)L"!!!!!",
    MB_ICONWARNING | MB_CANCELTRYCONTINUE | MB_DEFBUTTON2
    );
 return 0;
 }

这是我在命令行中输入的内容：

C:\Program Files\LLVM\bin>"C:\Program Files\LLVM\bin\clang-cl.exe"     "C:\Users\Dav
 id\Source\Repos\DY Obfuscator 2015-20162\DY Obfuscator\Source.cpp"

在VS2015中编译没有问题，但是我无法在命令行上编译，因为出现了以下错误：

C:\Program Files\LLVM\bin>"C:\Program Files\LLVM\bin\clang-cl.exe"    C:\test\Sourc
e.cpp
In file included from C:\test\Source.cpp:3:
In file included from C:\Program Files (x86)\Microsoft Visual Studio  14.0\VC\INC
LUDE\iostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\istream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\ostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio   14.0\VC\INC
LUDE\ios:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\xlocnum:7:
In file included from C:\Program Files (x86)\Microsoft Visual Studio   14.0\VC\INC
LUDE\cmath:656:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\xtgmath.h:8:
C:\Program Files (x86)\Microsoft Visual Studio     14.0\VC\INCLUDE\xtr1common(207,22
) :  error:
  use of undeclared identifier 'char16_t'
    struct _Is_integral<char16_t>
                        ^
C:\Program Files (x86)\Microsoft Visual Studio   14.0\VC\INCLUDE\xtr1common(213,22
) :  error:
  use of undeclared identifier 'char32_t'
    struct _Is_integral<char32_t>
                        ^
In file included from C:\test\Source.cpp:3:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\iostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\istream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\ostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ios:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio    14.0\VC\INC
 LUDE\xlocnum:10:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\streambuf:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\xiosbase:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\xlocale:8:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\stdexcept:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\exception:7:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\type_traits:6:
 C:\Program Files (x86)\Microsoft Visual Studio   14.0\VC\INCLUDE\xstddef(405,14) :
  error:
  use of undeclared identifier 'char16_t'
    struct hash<char16_t>
                ^
 C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xstddef(411,14) :
   error:
  use of undeclared identifier 'char32_t'
    struct hash<char32_t>
                ^
 In file included from C:\test\Source.cpp:3:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\iostream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\istream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
  LUDE\ostream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ios:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xlocnum:10:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\streambuf:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xiosbase:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xlocale:8:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\stdexcept:7:
In file included from C:\Program Files (x86)\Microsoft Visual Studio  14.0\VC\INC
LUDE\xstring:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xmemory0:8:
 C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\limits(611,33) :
  error:
  use of undeclared identifier 'char16_t'
 template<> class numeric_limits<char16_t>
                            ^
 C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\limits(901,33) :
  error:
  use of undeclared identifier 'char32_t'
 template<> class numeric_limits<char32_t>
                            ^
 In file included from C:\test\Source.cpp:3:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
  LUDE\iostream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\istream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ostream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ios:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xlocnum:10:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\streambuf:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xiosbase:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xlocale:8:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\stdexcept:7:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xstring:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xmemory0:10:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xutility:8:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\utility:7:
 C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\iosfwd(267,21) :
  error:
  use of undeclared identifier 'char16_t'
    struct char_traits<char16_t>
                       ^
  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\iosfwd(276,21) :
   error:
   use of undeclared identifier 'char32_t'
    struct char_traits<char32_t>
                       ^
 In file included from C:\test\Source.cpp:3:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\iostream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
  LUDE\istream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
  LUDE\ostream:6:
  In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ios:6:
  In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\xlocnum:10:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\streambuf:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xiosbase:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xlocale:8:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\stdexcept:7:
 C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xstring(2623,22)
  :  error:
  use of undeclared identifier 'char16_t'
 typedef basic_string<char16_t, char_traits<char16_t>, allocator<char16_t> >
                 ^
  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xstring(2623,53)
  :  error:
  expected unqualified-id
 typedef basic_string<char16_t, char_traits<char16_t>, allocator<char16_t> >
                                                ^
 C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xstring(2625,22)
 :  error:
  use of undeclared identifier 'char32_t'
typedef basic_string<char32_t, char_traits<char32_t>, allocator<char32_t> >
                 ^
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xstring(2625,53)
 :  error:
  expected unqualified-id
 typedef basic_string<char32_t, char_traits<char32_t>, allocator<char32_t> >
                                                ^
In file included from C:\test\Source.cpp:3:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
LUDE\iostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\istream:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ostream:6:
  In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\ios:6:
  In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xlocnum:10:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\streambuf:6:
 In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INC
 LUDE\xiosbase:6:
  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xlocale(1004,30)
  :  error:
  use of undeclared identifier 'char16_t'
    class _CRTIMP2_PURE codecvt<char16_t, char, _Mbstatet>
                                ^
  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xlocale(1328,30)
 :  error:
  use of undeclared identifier 'char32_t'
    class _CRTIMP2_PURE codecvt<char32_t, char, _Mbstatet>
                                ^
 14 errors generated.
1
char16_t和char32_t是C++11的新增内容，你编译时是否使用了相关标志？ - YSC
什么标志？我不这么认为... - user2554080
我的错。https://dev59.com/AoPba4cB1Zd3GeqPu6X-（在Windows上，clang默认使用C++11）。 - YSC
我在命令中添加了“-Xclang -std=c++11”和“-Xclang -std=c++14”，但这并没有帮助！:( - user2554080
1个回答
9

我最终发现需要在命令行中添加以下内容：

-fms-compatibility-version=19.00

在回复Clang bug report #24231中，Reid Klecker解释了为什么这是必要的：
“在[Visual Studio] 2015中，char16_t成为了内置类型。以前，它不能是内置类型，因为2013在其头文件中定义了它。默认情况下，Clang试图与2013兼容。要针对2015，请将[-fms-compatibility-version=19]传递给clang-cl。参数可以是cl /?输出的整个版本号。”
所以我的最终命令是（包括一般库）：
clang-cl.exe "C:\test\Source.cpp" -fms-compatibility-version=19.00 ^
   -Fe"C:\test\Source.exe" "kernel32.lib" "user32.lib" "gdi32.lib" "winspool.lib" ^
   "comdlg32.lib" "advapi32.lib" "shell32.lib" "ole32.lib" "oleaut32.lib" "uuid.lib" ^
   "odbc32.lib" "odbccp32.lib"
自从这个回复之后，他们似乎添加了一种自动设置“-fms-compatibility-version”的方法，该方法基于您的环境变量（实际上是通过检查“cl.exe”版本号）。因此，请确保clang可以看到“cl.exe”，然后此选项将自动设置。 - Denilson Amorim
@thelink2012 这是针对Clang 4.0的吗？使用在Windows 10上用MSVC 2017（cl.exe 19.10）预构建的二进制文件，兼容性设置仍然默认为18。 - David Brown
@DavidBrown 我在 Clang 3.9.1 上发现了这种行为，不确定他们是否在 4.0 上进行了更改。 - Denilson Amorim
网页内容由stack overflow 提供, 点击上面的
可以查看英文原文，
原文链接