diff --git a/boost.sh b/boost.sh
index 0587b8a5..eb5a22c7 100755
--- a/boost.sh
+++ b/boost.sh
@@ -19,4 +19,4 @@ mkdir -vp miniboost/
 
 bcp --boost="$boost" boost/shared_array.hpp boost/concept_check.hpp \
     boost/scoped_ptr.hpp boost/circular_buffer.hpp boost/scoped_array.hpp \
-    boost/bind miniboost/
\ No newline at end of file
+    boost/enable_shared_from_this.hpp boost/bind miniboost/
\ No newline at end of file
diff --git a/miniboost/boost/enable_shared_from_this.hpp b/miniboost/boost/enable_shared_from_this.hpp
new file mode 100644
index 00000000..b1bb63d9
--- /dev/null
+++ b/miniboost/boost/enable_shared_from_this.hpp
@@ -0,0 +1,18 @@
+#ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+#define BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+
+//
+//  enable_shared_from_this.hpp
+//
+//  Copyright (c) 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
+//
+
+#include <boost/smart_ptr/enable_shared_from_this.hpp>
+
+#endif  // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
diff --git a/miniboost/boost/smart_ptr/enable_shared_from_this.hpp b/miniboost/boost/smart_ptr/enable_shared_from_this.hpp
new file mode 100644
index 00000000..3230f025
--- /dev/null
+++ b/miniboost/boost/smart_ptr/enable_shared_from_this.hpp
@@ -0,0 +1,79 @@
+#ifndef BOOST_SMART_PTR_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+#define BOOST_SMART_PTR_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+
+//
+//  enable_shared_from_this.hpp
+//
+//  Copyright 2002, 2009 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
+//
+
+#include <boost/smart_ptr/weak_ptr.hpp>
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/assert.hpp>
+#include <boost/config.hpp>
+
+namespace boost
+{
+
+template<class T> class enable_shared_from_this
+{
+protected:
+
+    enable_shared_from_this() BOOST_NOEXCEPT
+    {
+    }
+
+    enable_shared_from_this(enable_shared_from_this const &) BOOST_NOEXCEPT
+    {
+    }
+
+    enable_shared_from_this & operator=(enable_shared_from_this const &) BOOST_NOEXCEPT
+    {
+        return *this;
+    }
+
+    ~enable_shared_from_this() BOOST_NOEXCEPT // ~weak_ptr<T> newer throws, so this call also must not throw
+    {
+    }
+
+public:
+
+    shared_ptr<T> shared_from_this()
+    {
+        shared_ptr<T> p( weak_this_ );
+        BOOST_ASSERT( p.get() == this );
+        return p;
+    }
+
+    shared_ptr<T const> shared_from_this() const
+    {
+        shared_ptr<T const> p( weak_this_ );
+        BOOST_ASSERT( p.get() == this );
+        return p;
+    }
+
+public: // actually private, but avoids compiler template friendship issues
+
+    // Note: invoked automatically by shared_ptr; do not call
+    template<class X, class Y> void _internal_accept_owner( shared_ptr<X> const * ppx, Y * py ) const
+    {
+        if( weak_this_.expired() )
+        {
+            weak_this_ = shared_ptr<T>( *ppx, py );
+        }
+    }
+
+private:
+
+    mutable weak_ptr<T> weak_this_;
+};
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
diff --git a/miniboost/boost/smart_ptr/weak_ptr.hpp b/miniboost/boost/smart_ptr/weak_ptr.hpp
new file mode 100644
index 00000000..e3e9ad9b
--- /dev/null
+++ b/miniboost/boost/smart_ptr/weak_ptr.hpp
@@ -0,0 +1,253 @@
+#ifndef BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED
+
+//
+//  weak_ptr.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/weak_ptr.htm for documentation.
+//
+
+#include <memory> // boost.TR1 include order fix
+#include <boost/smart_ptr/detail/shared_count.hpp>
+#include <boost/smart_ptr/shared_ptr.hpp>
+
+namespace boost
+{
+
+template<class T> class weak_ptr
+{
+private:
+
+    // Borland 5.5.1 specific workarounds
+    typedef weak_ptr<T> this_type;
+
+public:
+
+    typedef typename boost::detail::sp_element< T >::type element_type;
+
+    weak_ptr() BOOST_NOEXCEPT : px(0), pn() // never throws in 1.30+
+    {
+    }
+
+//  generated copy constructor, assignment, destructor are fine...
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+// ... except in C++0x, move disables the implicit copy
+
+    weak_ptr( weak_ptr const & r ) BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+    }
+
+    weak_ptr & operator=( weak_ptr const & r ) BOOST_NOEXCEPT
+    {
+        px = r.px;
+        pn = r.pn;
+        return *this;
+    }
+
+#endif
+
+//
+//  The "obvious" converting constructor implementation:
+//
+//  template<class Y>
+//  weak_ptr(weak_ptr<Y> const & r): px(r.px), pn(r.pn) // never throws
+//  {
+//  }
+//
+//  has a serious problem.
+//
+//  r.px may already have been invalidated. The px(r.px)
+//  conversion may require access to *r.px (virtual inheritance).
+//
+//  It is not possible to avoid spurious access violations since
+//  in multithreaded programs r.px may be invalidated at any point.
+//
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( weak_ptr<Y> const & r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    weak_ptr( weak_ptr<Y> const & r )
+
+#endif
+    BOOST_NOEXCEPT : px(r.lock().get()), pn(r.pn)
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( weak_ptr<Y> && r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    weak_ptr( weak_ptr<Y> && r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.lock().get() ), pn( static_cast< boost::detail::weak_count && >( r.pn ) )
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+        r.px = 0;
+    }
+
+    // for better efficiency in the T == Y case
+    weak_ptr( weak_ptr && r )
+    BOOST_NOEXCEPT : px( r.px ), pn( static_cast< boost::detail::weak_count && >( r.pn ) )
+    {
+        r.px = 0;
+    }
+
+    // for better efficiency in the T == Y case
+    weak_ptr & operator=( weak_ptr && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< weak_ptr && >( r ) ).swap( *this );
+        return *this;
+    }
+
+
+#endif
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( shared_ptr<Y> const & r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    weak_ptr( shared_ptr<Y> const & r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+    }
+
+#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1300)
+
+    template<class Y>
+    weak_ptr & operator=( weak_ptr<Y> const & r ) BOOST_NOEXCEPT
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+
+        px = r.lock().get();
+        pn = r.pn;
+
+        return *this;
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    template<class Y>
+    weak_ptr & operator=( weak_ptr<Y> && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< weak_ptr<Y> && >( r ) ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+    template<class Y>
+    weak_ptr & operator=( shared_ptr<Y> const & r ) BOOST_NOEXCEPT
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+
+        px = r.px;
+        pn = r.pn;
+
+        return *this;
+    }
+
+#endif
+
+    shared_ptr<T> lock() const BOOST_NOEXCEPT
+    {
+        return shared_ptr<T>( *this, boost::detail::sp_nothrow_tag() );
+    }
+
+    long use_count() const BOOST_NOEXCEPT
+    {
+        return pn.use_count();
+    }
+
+    bool expired() const BOOST_NOEXCEPT
+    {
+        return pn.use_count() == 0;
+    }
+
+    bool _empty() const // extension, not in std::weak_ptr
+    {
+        return pn.empty();
+    }
+
+    void reset() BOOST_NOEXCEPT // never throws in 1.30+
+    {
+        this_type().swap(*this);
+    }
+
+    void swap(this_type & other) BOOST_NOEXCEPT
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+    template<typename Y>
+    void _internal_aliasing_assign(weak_ptr<Y> const & r, element_type * px2)
+    {
+        px = px2;
+        pn = r.pn;
+    }
+
+    template<class Y> bool owner_before( weak_ptr<Y> const & rhs ) const BOOST_NOEXCEPT
+    {
+        return pn < rhs.pn;
+    }
+
+    template<class Y> bool owner_before( shared_ptr<Y> const & rhs ) const BOOST_NOEXCEPT
+    {
+        return pn < rhs.pn;
+    }
+
+// Tasteless as this may seem, making all members public allows member templates
+// to work in the absence of member template friends. (Matthew Langston)
+
+#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+
+private:
+
+    template<class Y> friend class weak_ptr;
+    template<class Y> friend class shared_ptr;
+
+#endif
+
+    element_type * px;            // contained pointer
+    boost::detail::weak_count pn; // reference counter
+
+};  // weak_ptr
+
+template<class T, class U> inline bool operator<(weak_ptr<T> const & a, weak_ptr<U> const & b) BOOST_NOEXCEPT
+{
+    return a.owner_before( b );
+}
+
+template<class T> void swap(weak_ptr<T> & a, weak_ptr<T> & b) BOOST_NOEXCEPT
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED