MinGW 5.3.0中的'mutex'不是'std'的成员 [英] 'mutex' is not a member of 'std' in MinGW 5.3.0

问题描述

我正在使用MinGW 5.3.0和Crypto ++ 5.6.5:

C:\MinGW>g++ -std=c++11 -s -D_WIN32_WINNT=0x0501 LOG.cpp -U__STRICT_ANSI__ Decclass.cpp \
-IC:\\MinGW\\ -IC:\\MinGW\\boost -LC:\\MinGW  -lssl -lcrypto -lcryptopp -lgdi32 -lPCRYPT \
 -lz -ltiny -lwsock32 -lws2_32 -lShlwapi

编译会导致以下错误.

c:\mingw\cryptopp565\include\cryptopp\misc.h:287:14: error: 'mutex' in namespace 'std'
does not name a typestatic std::mutex s_mutex;

c:\mingw\cryptopp565\include\cryptopp\misc.h:296:18: error: 'mutex' is not a member of
'std'std::lock_guard<std::mutex> lock(s_mutex);

显示'mutex'不是'std'的成员

我需要其他版本的MinGW吗? 还是我可以自行修复此版本?

解决方案

我通过在路径"cryptopp565 \ include \ cryptopp \ misc.h"中编辑"misc.h" 来解决此问题. /p>

在 misc.h 的顶部，我包含了 boost库

中的 mutex.hpp

#include "c:\mingw\include\boost\asio\detail\mutex.hpp"

并且我还将命名空间也从 std 更改为 boost :: asio :: detail

static std::mutex s_mutex; 
static boost::asio::detail::mutex s_mutex;

I am using MinGW 5.3.0 and Crypto++ 5.6.5:

C:\MinGW>g++ -std=c++11 -s -D_WIN32_WINNT=0x0501 LOG.cpp -U__STRICT_ANSI__ Decclass.cpp \
-IC:\\MinGW\\ -IC:\\MinGW\\boost -LC:\\MinGW  -lssl -lcrypto -lcryptopp -lgdi32 -lPCRYPT \
 -lz -ltiny -lwsock32 -lws2_32 -lShlwapi

Compiling results in the error below.

c:\mingw\cryptopp565\include\cryptopp\misc.h:287:14: error: 'mutex' in namespace 'std'
does not name a typestatic std::mutex s_mutex;

c:\mingw\cryptopp565\include\cryptopp\misc.h:296:18: error: 'mutex' is not a member of
'std'std::lock_guard<std::mutex> lock(s_mutex);

It showing 'mutex' is not a member of 'std'

Do i need anther version of MinGW ? Or can I fix this build itself?

解决方案

I fix this issue by editing "misc.h" in the path "cryptopp565\include\cryptopp\misc.h"

On the top of misc.h I included the mutex.hpp from boost library

#include "c:\mingw\include\boost\asio\detail\mutex.hpp"

and i changed namespace also from std to boost::asio::detail

static std::mutex s_mutex; 
static boost::asio::detail::mutex s_mutex;

这篇关于MinGW 5.3.0中的'mutex'不是'std'的成员的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！