Header order conflicts between Thread and ASIO

[joshuadavidson@…]

This problem is still present as of 1.50. Link to discussion: ​http://lists.boost.org/boost-users/2012/06/74823.php

Consider this following simple app:

#include <boost/thread/thread.hpp>

#include <boost/asio.hpp>

#include <boost/thread/recursive_mutex.hpp>

 

 

int main() {

 

                return 0;

}

If you try to build that on Windows, you receive the following error:

In file included from c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/recursive_mutex.hpp:14:0,

                 from c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/recursive_mutex.hpp:14,

                 from build.cpp:3:

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp: In member function 'void boost::detail::basic_recursive_mutex_impl<underlying_mutex_type>::lock()':

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp:52:21: error: '_InterlockedExchange' is not a member of 'boost::detail'

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp: In member function 'void boost::detail::basic_recursive_mutex_impl<underlying_mutex_type>::unlock()':

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp:71:21: error: '_InterlockedExchange' is not a member of 'boost::detail'

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp: In member function 'bool boost::detail::basic_recursive_mutex_impl<underlying_mutex_type>::try_basic_lock(long int)':

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp:91:21: error: '_InterlockedExchange' is not a member of 'boost::detail'

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp: In member function 'bool boost::detail::basic_recursive_mutex_impl<underlying_mutex_type>::try_timed_lock(long int, const boost::system_time&)':

c:/mingw/lib/gcc/../../x86_64-w64-mingw32/include/boost/thread/win32/basic_recursive_mutex.hpp:102:21: error: '_InterlockedExchange' is not a member of 'boost::detail'

If asio.hpp is moved ahead of the thread headers, the error goes away. We’ve been trying to dictate #include order to work around this problem, but it keeps cropping up.

[viboes]

I don't know if Boost.Asio should define WIN32_WINNT when WIN32_WINNT is defined but _WIN32_WINDOWS is undefined.

# if !defined(_WIN32_WINNT) && !defined(_WIN32_WINDOWS)
#  if defined(_MSC_VER) || defined(__BORLANDC__)
#   pragma message( \
  "Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately. For example:\n"\
  "- add -D_WIN32_WINNT=0x0501 to the compiler command line; or\n"\
  "- add _WIN32_WINNT=0x0501 to your project's Preprocessor Definitions.\n"\
  "Assuming _WIN32_WINNT=0x0501 (i.e. Windows XP target).")
#  else // defined(_MSC_VER) || defined(__BORLANDC__)
#   warning Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately.
#   warning For example, add -D_WIN32_WINNT=0x0501 to the compiler command line.
#   warning Assuming _WIN32_WINNT=0x0501 (i.e. Windows XP target).
#  endif // defined(_MSC_VER) || defined(__BORLANDC__)
#  define _WIN32_WINNT 0x0501
# endif // !defined(_WIN32_WINNT) && !defined(_WIN32_WINDOWS)