std :: thread不是使用Eclipse Kepler MinGW的命名空间std的成员 [英] std::thread is not a member of namespace std using Eclipse Kepler MinGW

问题描述

我试图编译一个简单的c ++程序，在eclipse kepler / mingw 4.8.1和win32上使用std :: thread。我希望在Windows开发多年后的某个时候将开发移动到linux。

  #includetest.h
 #include< thread> 
 #include< algorithm> 
 
 
 int main（）
 {
 Test :: CreateInstance（）; 
 
 std :: thread（
 [&]（）
 {
 Test :: I（） - > Output2（）; 
} 
）; 
 
 Test :: DestroyInstance（）; 
 return 0; 
} 
  

忽略测试的目的（这是一个单例，一旦我得到std ::线程工作！）

我在Eclipse中设置的g ++编译器设置是：

  -c -fmessage-length = 0 -std = c ++ 0x -Wc ++ 0x-compat 
  

我定义的预处理器符号是：

  __GXX_EXPERIMENTAL_CXX0X__ 
  

建筑物抱怨std :: thread不是std的成员：

  10:30:13 ****增量配置构建项目测试的调试**** 
信息：Internal Builder用于build 
 g ++ -D__GXX_EXPERIMENTAL_CXX0X__ -O0 -g3 -Wall -c -fmessage-length = 0 -std = c ++ 0x -Wc ++ 0x-compat -o main.o.. \\main。 cpp
 ..\main.cpp：在函数'int main（）'：
 ..\main.cpp：11：2：error：'thread'不是' std'
 std :: thread（
 ^ 
  

解决方案

Plain MinGW不能支持 std :: thread 。您将需要使用启用了posix线程的MinGW-w64工具链（如Qt 5附带的工具链），以便libstdc ++公开< thread> < mutex> 和< future> 功能。



您可以在此处找到安装程序，但您也可以尝试替换整个 mingw 工具链根文件夹与这些包中的一个。你可以选择32位或64位，记得要选择 threads-posix 如果你想玩 std :: thread 和朋友。除了您已经拥有的编译器选项之外，不需要特殊的编译器选项。如果您不需要GCC 4.6兼容性，我建议使用 -std = c ++ 11 。

I'm trying to compile a simple c++ program that uses std::thread on eclipse kepler / mingw 4.8.1 and win32. I hope to move development to linux at some point after many years on windows development.

#include "test.h"
#include <thread>
#include <algorithm>


int main()
{
    Test::CreateInstance();

    std::thread(
        [&]()
        {
            Test::I()->Output2();
        }
    );

    Test::DestroyInstance();
    return 0;
}

Ignoring the purpose of test (it's a singleton that just produces some output that I will expand upon, once I get the std::thread working!)

The g++ compiler settings I've set in Eclipse are:

-c -fmessage-length=0  -std=c++0x -Wc++0x-compat

And the preprocessor symbol I have defined is:

__GXX_EXPERIMENTAL_CXX0X__

Building complains that std::thread is not a member of std:

    10:30:13 **** Incremental Build of configuration Debug for project test ****
Info: Internal Builder is used for build
g++ -D__GXX_EXPERIMENTAL_CXX0X__ -O0 -g3 -Wall -c -fmessage-length=0 -std=c++0x -Wc++0x-compat -o main.o "..\\main.cpp" 
..\main.cpp: In function 'int main()':
..\main.cpp:11:2: error: 'thread' is not a member of 'std'
  std::thread(
  ^

Can someone suggest what I might be missing to get this compiling correctly?

解决方案

Plain MinGW cannot support std::thread. You will need to use a MinGW-w64 toolchain (such as those shipped with Qt 5) that has "posix" threading enabled, so that libstdc++ exposes the <thread>, <mutex> and <future> functionality.

You can find an installer here, but you can also try just replacing the whole mingw toolchain root folder with one of these packages. You can choose 32- or 64-bit, remember to select threads-posix if you want to play with std::thread and friends. No special compiler options other than the ones you already have are needed. I do suggest using -std=c++11 if you don't need GCC 4.6 compatibility.

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