Hello,
I have a problem using Boost.Signals. With this test program:
<code>
// See the previous thread regarding
// "[regex] Unresolved external symbols under VC7.1 w/ dynamic linking
#define BOOST_ALL_DYN_LINK
#include
int main(int argc, char* argv[])
{
return 0;
}
</code>
I get some compiler warnings under MSVC 7.1 / Boost 1.32. Is there something I
can do about it?
Here is the compiler output I get:
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\connection.hpp(111) :
warning C4251: 'boost::signals::connection::con' : class 'boost::shared_ptr<T>'
needs to have dll-interface to be used by clients of class
'boost::signals::connection'
with
[
T=boost::signals::detail::basic_connection
]
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\trackable.hpp(55) :
warning C4251: 'boost::signals::trackable::connected_signals' : class
'std::list<_Ty>' needs to have dll-interface to be used by clients of class
'boost::signals::trackable'
with
[
_Ty=boost::signals::connection
]
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\slot.hpp(51) : warning
C4251: 'boost::signals::detail::slot_base::data' : class 'boost::shared_ptr<T>'
needs to have dll-interface to be used by clients of class
'boost::signals::detail::slot_base'
with
[
T=boost::signals::detail::slot_base::data_t
]
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\named_slot_map.hpp(100)
: warning C4251: 'boost::signals::detail::named_slot_map_iterator::impl_' :
class 'boost::scoped_ptr<T>' needs to have dll-interface to be used by clients
of class 'boost::signals::detail::named_slot_map_iterator'
with
[
T=boost::signals::detail::named_slot_map_iterator::impl
]
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\named_slot_map.hpp(129)
: warning C4251: 'boost::signals::detail::named_slot_map::impl_' : class
'boost::scoped_ptr<T>' needs to have dll-interface to be used by clients of
class 'boost::signals::detail::named_slot_map'
with
[
T=boost::signals::detail::named_slot_map::impl
]
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\signal_base.hpp(40)
: warning C4251: 'boost::signals::detail::call_notification::impl' : class
'boost::shared_ptr<T>' needs to have dll-interface to be used by clients of
class 'boost::signals::detail::call_notification'
with
[
T=boost::signals::detail::signal_base_impl
]
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\signal_base.hpp(114)
: warning C4251: 'boost::signals::detail::signal_base_impl::combiner_' : class
'boost::any' needs to have dll-interface to be used by clients of class
'boost::signals::detail::signal_base_impl'
c:\dev\Libraries\Boost\include\boost-1_32\boost\any.hpp(22) : see
declaration of 'boost::any'
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\signal_base.hpp(120)
: warning C4275: non dll-interface class 'boost::noncopyable_::noncopyable' used
as base for dll-interface class 'boost::signals::detail::signal_base'
c:\dev\Libraries\Boost\include\boost-1_32\boost\noncopyable.hpp(22) :
see declaration of 'boost::noncopyable_::noncopyable'
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\signal_base.hpp(120)
: see declaration of 'boost::signals::detail::signal_base'
c:\dev\Libraries\Boost\include\boost-1_32\boost\signals\detail\signal_base.hpp(150)
: warning C4251: 'boost::signals::detail::signal_base::impl' : class
'boost::shared_ptr<T>' needs to have dll-interface to be used by clients of
class 'boost::signals::detail::signal_base'
with
[
T=boost::signals::detail::signal_base_impl
]
Best,
Klaus
--
Klaus Nowikow
DECOMSYS - Dependable Computer Systems
Development Engineer
Stumpergasse 48/14, A-1060 Wien, Austria
Phone: +43 1 59983-31
Fax: +43 1 59983-731
http://www.decomsys.com
