Question

MinGw 4.7.0 Boost 1.47
代码：

#include <iostream>
#include <boost/thread.hpp>
int main(int argc, char *argv[])
{
std::cout<<"In main"<<std::endl;
}

编译器字符串：

g++.exe -Wall -fexceptions  -g    -IC:\soft\ides_comp\mingw\include\boost_1_47_0  -c      D:\work\cpp_cb\mt1\main.cpp -o obj\Debug\main.o

它没有编译，我尝试的编译器选项也有相同的错误。

警告：
In file included from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/win32/thread_data.hpp:12:0, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/thread.hpp:15, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread.hpp:13, from D:\work\cpp_cb\mt1\main.cpp:2: C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/win32/thread_heap_alloc.hpp:59:40: warning: inline function 'void* boost::detail::allocate_raw_heap_memory(unsigned int)' declared as dllimport: attribute ignored [-Wattributes] C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/win32/thread_heap_alloc.hpp:69:39: warning: inline function 'void boost::detail::free_raw_heap_memory(void*)' declared as dllimport: attribute ignored [-Wattributes]

错误：
In file included from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/smart_ptr/shared_ptr.hpp:30:0, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/shared_ptr.hpp:17, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/date_time/time_clock.hpp:17, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/thread_time.hpp:9, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/win32/thread_data.hpp:10, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread/thread.hpp:15, from C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/thread.hpp:13, from D:\work\cpp_cb\mt1\main.cpp:2:

C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/checked_delete.hpp: In instantiation of 'void boost::checked_delete(T*) [with T = boost::error_info<boost::tag_original_exception_type, const std::type_info*>]':

C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/smart_ptr/detail/shared_count.hpp:95:13: required from 'boost::detail::shared_count::shared_count(Y*) [with Y = boost::error_info<boost::tag_original_exception_type, const std::type_info*>]' C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/smart_ptr/shared_ptr.hpp:183:50: required from 'boost::shared_ptr<T>::shared_ptr(Y*) [with Y = boost::error_info<boost::tag_original_exception_type, const std::type_info*>; T = boost::error_info<boost::tag_original_exception_type, const std::type_info*>]' C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/exception/info.hpp:171:69: required from 'const E& boost::exception_detail::set_info(const E&, const boost::error_info<Tag, T>&) [with E = boost::unknown_exception; Tag = boost::tag_original_exception_type; T = const std::type_info*]' C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/exception/info.hpp:192:46: required from 'typename boost::enable_if<boost::exception_detail::derives_boost_exception<E>, const E&>::type boost::operator<<(const E&, const boost::error_info<Tag, T>&) [with E = boost::unknown_exception; Tag = boost::tag_original_exception_type; T = const std::type_info*; typename boost::enable_if<boost::exception_detail::derives_boost_exception<E>, const E&>::type = const boost::unknown_exception&]' C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/exception/detail/exception_ptr.hpp:182:13: required from 'void boost::unknown_exception::add_original_type(const E&) [with E = std::exception]' C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/exception/detail/exception_ptr.hpp:161:32: required from here

警告2：
C:\soft\ides_comp\mingw\include\boost_1_47_0/boost/checked_delete.hpp:34:5: warning: deleting object of polymorphic class type 'boost::error_info<boost::tag_original_exception_type, const std::type_info*>' which has non-virtual destructor might cause undefined behaviour [-Wdelete-non-virtual-dtor]

它能是什么？感谢

Answer 1

这已在以后的升级版本中修复。点击这里：

https://svn.boost.org/trac/boost/ticket/6165

更新boost / config / stdlib / libstdcpp3.hpp：

#if defined(_GLIBCXX_HAVE_GTHR_DEFAULT) \
    || defined(_GLIBCXX_HAS_GTHREADS) \
    || defined(_GLIBCXX__PTHREADS) \
    || defined(WIN32)

添加了_GLIBCXX_HAS_GTHREADS和/或WIN32（来自上面的链接，请参阅补丁）。

WIN32似乎有点蛮力，但没有（至少不适合我。我使用较旧的升级版本1.42）。

Answer 2

如果编译线程库以使用Win32线程，则可能需要

-DBOOST_USE_WINDOWS_H

在您的编译器标志中。虽然我不认为这是问题（我因为不使用它而得到一组不同的错误），但你可以尝试一下。

Answer 3

这个答案可能不是很直接，但是：我确实使用g ++ 4.7.0 20111209，它支持线程。

#include <iostream>
#include <thread>

using namespace std;

void foo()
{
    cout << "Hello from thread\n";
}

int main()
{
    thread th1(foo);
    th1.join();
    return 0;
}

在编译期间，使用-std = c ++ 11选项来使用支持线程的最新标准

PS：使用mingw 4.7.0在我的电脑上编译的boost 1.48给出了一个错误（当尝试使用boost :: thread时）：线程支持不可用：已使用BOOST_DISABLE_THREADS显式禁用它所以我猜它默认是用g ++ 4.7.0禁用的（g ++ 4.6.2不是）。

MinGw 4.7.0不会使用#include <boost thread =“”> </boost>编译代码

3 个答案: