id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6148	MinGW : Boost.Thread defaults to DLL linkage	Cyril Othenin-Girard <cog@…>	Anthony Williams	"I compile boost-1.48 with GCC 4.6.1 using MinGW-32 3.10 on Windows XP.

I confirm the last comment of '''WFrane''' in ticket #4614 :

> Replying to '''anthonyw''':
> > Static linking seems to work fine now #4258 is fixed.
> 
> It appears that adding
> '''#define BOOST_THREAD_USE_LIB'''
> before other boost thread-related preprocessor directives is still required for static linking when using MinGW (tested using Boost 1.45.0 and MinGW 4.4.1).


I also built BOOST libraries as static ones (which is the default on MinGW). 

Nevertheless, I have to explicitly add '''-DBOOST_THREAD_USE_LIB''' to my project makefile to avoid a lot of warnings like :
 {{{
boost-1.48/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]
boost-1.48/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]
}}}

This is not required on other Win32 platforms. 

Now than MinGW has Thread-Local-Storage automatic clean-up (''confirmation needed''), is it possible to default to static library linkage instead of DLL ?"	Bugs	closed		thread	Boost 1.48.0	Problem	duplicate	MinGW thread static link