Cannot open include file: 'initializer_list' - c++

Question

I want to compile The Forgotten Server (Tibia OTServer) on Microsoft Visual Studio 2012 (MSVC).
But at the file: unordered_set.hpp I have this:
#if !defined(BOOST_NO_0X_HDR_INITIALIZER_LIST)
#include <initializer_list>
#endif
and is giving me the errors:
boost/unordered/unordered_set.hpp(27): fatal error C1083: Cannot open
include file: 'initializer_list': No such file or directory
(..\spells.cpp)
boost/unordered/unordered_set.hpp(27): fatal error C1083: Cannot open
include file: 'initializer_list': No such file or directory
(..\talkaction.cpp)
What can I do?
By defining BOOST_NO_0X_HDR_INITIALIZER_LIST now I have the following error:
..\scriptmanager.cpp(147): error C2039: 'string' : is not a member of 'std::basic_string<_Elem,_Traits,_Alloc>'
with
[
_Elem=char,
_Traits=std::char_traits<char>,
_Alloc=std::allocator<char>
]
at:
std::string s = BOOST_DIR_ITER_FILENAME(it);