帶有MinGW STL的Clang（錯誤：全局名稱空間中沒有名為“ fgetws”的成員）

Question

我正在嘗試使用MinGW STL（clang和mingw的最新版本）在Windows下用Clang編譯一個簡單的dll。 如您所見，我已禁用ms兼容模式和硬編碼的VS標頭。 當包含MinGW STL映射標頭時，出現以下錯誤：

C:\Program Files (x86)\LLVM\vc11\bin\Debug>clang++ -fno-ms-compatibility -nostdinc -c -shared -v -o simple.o simple.cpp -I "C:\MinGW\include\sys" -I "C:\MinGW\lib\gcc\i686-pc-mingw32\4.8.0\include" -I "C:\MinGW\include" -I "C:\MinGW\include\c++" -I "C:\MinGW\include\c++\4.8.0" -I "C:\MinGW\include\c++\4.8.0\backward" -I "C:\MinGW\include\c++\4.8.0\bits" -I "C:\MinGW\include\c++\4.8.0\debug" -I "C:\MinGW\include\c++\4.8.0\decimal" -I "C:\MinGW\include\c++\4.8.0\ext" -I "C:\MinGW\include\c++\4.8.0\i686-pc-mingw32" -I "C:\MinGW\include\c++\4.8.0\tr1" -I "C:\MinGW\include\c++\4.8.0\tr2" -I "C:\MinGW\include\c++\4.8.0\profile" -Wl,--verbose
clang version 3.4 (trunk)
Target: i686-pc-win32
Thread model: posix
clang++.exe: warning: -Wl,--verbose: 'linker' input unused
clang++.exe: warning: argument unused during compilation: '-shared'
 "C:/Program Files (x86)/LLVM/vc11/bin/Debug/clang++.exe" -cc1 -triple i686-pc-win32 -emit-obj -mrelax-all -disable-free -main-file-name simple.cpp -mrelocation-model static -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -target-cpu pentium4 -v -coverage-file simple.o -nostdsysteminc -nobuiltininc -resource-dir "C:/Program Files (x86)/LLVM/vc11/bin/Debug\\..\\lib\\clang\\3.4" -I "C:\\MinGW\\include\\sys" -I "C:\\MinGW\\lib\\gcc\\i686-pc-mingw32\\4.8.0\\include" -I "C:\\MinGW\\include" -I "C:\\MinGW\\include\\c++" -I "C:\\MinGW\\include\\c++\\4.8.0" -I "C:\\MinGW\\include\\c++\\4.8.0\\backward" -I "C:\\MinGW\\include\\c++\\4.8.0\\bits" -I "C:\\MinGW\\include\\c++\\4.8.0\\debug" -I "C:\\MinGW\\include\\c++\\4.8.0\\decimal" -I "C:\\MinGW\\include\\c++\\4.8.0\\ext" -I "C:\\MinGW\\include\\c++\\4.8.0\\i686-pc-mingw32" -I "C:\\MinGW\\include\\c++\\4.8.0\\tr1" -I "C:\\MinGW\\include\\c++\\4.8.0\\tr2" -I "C:\\MinGW\\include\\c++\\4.8.0\\profile" -std=c++11 -fdeprecated-macro -ferror-limit 19 -fmessage-length 150 -mstackrealign -fms-extensions -fmsc-version=1300 -fdelayed-template-parsing -fobjc-runtime=gcc -fobjc-default-synthesize-properties -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -backend-option -vectorize-loops -o simple.o -x c++ simple.cpp
clang -cc1 version 3.4 based upon LLVM 3.4svn default target i686-pc-win32
#include "..." search starts here:
#include <...> search starts here:
 C:\MinGW\include\sys
 C:\MinGW\lib\gcc\i686-pc-mingw32\4.8.0\include
 C:\MinGW\include
 C:\MinGW\include\c++
 C:\MinGW\include\c++\4.8.0
 C:\MinGW\include\c++\4.8.0\backward
 C:\MinGW\include\c++\4.8.0\bits
 C:\MinGW\include\c++\4.8.0\debug
 C:\MinGW\include\c++\4.8.0\decimal
 C:\MinGW\include\c++\4.8.0\ext
 C:\MinGW\include\c++\4.8.0\i686-pc-mingw32
 C:\MinGW\include\c++\4.8.0\tr1
 C:\MinGW\include\c++\4.8.0\tr2
 C:\MinGW\include\c++\4.8.0\profile
End of search list.
In file included from simple.cpp:3:
In file included from C:\MinGW\include\c++\4.8.0\map:61:
In file included from C:\MinGW\include\c++\4.8.0\bits/stl_map.h:63:
In file included from C:\MinGW\include\c++\4.8.0\tuple:39:
In file included from C:\MinGW\include\c++\4.8.0\array:38:
In file included from C:\MinGW\include\c++\4.8.0\stdexcept:39:
In file included from C:\MinGW\include\c++\4.8.0\string:40:
In file included from C:\MinGW\include\c++\4.8.0\bits/char_traits.h:40:
In file included from C:\MinGW\include\c++\4.8.0\bits/postypes.h:40:
C:\MinGW\include\c++\4.8.0\cwchar:143:11: error: no member named 'fgetws' in the global namespace
  using ::fgetws;
        ~~^
C:\MinGW\include\c++\4.8.0\cwchar:145:11: error: no member named 'fputws' in the global namespace
  using ::fputws;
        ~~^
C:\MinGW\include\c++\4.8.0\cwchar:149:11: error: no member named 'getwc' in the global namespace
  using ::getwc;
        ~~^
C:\MinGW\include\c++\4.8.0\cwchar:150:11: error: no member named 'getwchar' in the global namespace
  using ::getwchar;
        ~~^
C:\MinGW\include\c++\4.8.0\cwchar:155:11: error: no member named 'putwc' in the global namespace
  using ::putwc;
        ~~^
C:\MinGW\include\c++\4.8.0\cwchar:156:11: error: no member named 'putwchar' in the global namespace
  using ::putwchar;
        ~~^
6 errors generated.

任何幫助表示贊賞！

Answer 1

當定義__MSVCRT__宏時，這些函數在MinGW的stdio.h和/或wchar.h中聲明。 MinGW編譯器在構建時會定義__MSVCRT__ ，從而__MSVCRT__運行msvcrt.dll運行時，而不是舊的crtdll運行時（我認為它幾乎不再使用了）。

我不知道clang是否會定義該宏或在什么條件下會定義（甚至clang將鏈接到msvcrt.dll ）。

您可以嘗試將-D__MSVCRT__=1添加到clang命令行中，以查看是否可以使工作正常。