error infromation:

=============================
Make error line 299: problem compiling: In file included from src/2geom/d2.h:36:
0,
                 from src/2geom/rect.h:40,
                 from src/libnr/nr-rect.h:28,
                 from src/sp-item.h:25,
                 from src/sp-lpe-item.h:17,
                 from src/sp-shape.h:18,
                 from src/sp-path.h:16,
                 from src/extension/internal/emf-win32-inout.cpp:29:
src/2geom/interval.h: In member function 'bool Geom::OptInterval::isEmpty()':
src/2geom/interval.h:241:46: warning: converting 'false' to pointer type for arg
ument 2 of 'bool boost::operator==(const boost::optional<T>&, void (*)(boost::de
tail::none_helper)) [with T = Geom::Interval, void (*)(boost::detail::none_helpe
r) = void (*)(boost::detail::none_helper)]'
In file included from src/2geom/d2.h:429:0,
                 from src/2geom/rect.h:40,
                 from src/libnr/nr-rect.h:28,
                 from src/sp-item.h:25,
                 from src/sp-lpe-item.h:17,
                 from src/sp-shape.h:18,
                 from src/sp-path.h:16,
                 from src/extension/internal/emf-win32-inout.cpp:29:
src/2geom/rect.h: In member function 'bool Geom::OptRect::isEmpty() const':
src/2geom/rect.h:218:52: warning: converting 'false' to pointer type for argumen
t 2 of 'bool boost::operator==(const boost::optional<T>&, void (*)(boost::detail
::none_helper)) [with T = Geom::D2<Geom::Interval>, void (*)(boost::detail::none
_helper) = void (*)(boost::detail::none_helper)]'
src/extension/internal/emf-win32-inout.cpp: In member function 'virtual SPDocume
nt* Inkscape::Extension::Internal::EmfWin32::open(Inkscape::Extension::Input*, c
onst gchar*)':
src/extension/internal/emf-win32-inout.cpp:2356:73: error: invalid conversion fr
om 'int (*)(HDC__*, HANDLETABLE*, ENHMETARECORD*, int, LPARAM)' to 'int (*)(HDC_
_*, HANDLETABLE*, const ENHMETARECORD*, int, LPARAM)'
src/extension/internal/emf-win32-inout.cpp:2356:73: error:   initializing argume
nt 3 of 'BOOL EnumEnhMetaFile(HDC__*, HENHMETAFILE__*, int (*)(HDC__*, HANDLETAB
LE*, const ENHMETARECORD*, int, LPARAM), void*, const RECT*)'