unresolved external symbol while linking to boost statically - c++

Question

I'm trying to build my application and statically linking it to Boost 1.57 but I get 6 linking errors:
>LINK : warning LNK4044: unrecognized option '/static'; ignored
2>ShaderProgram.obj : error LNK2019: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::system_category(void)" (?system_category#system#boost##YAABVerror_category#12#XZ) referenced in function "void __cdecl boost::system::`dynamic initializer for 'native_ecat''(void)" (??__Enative_ecat#system#boost##YAXXZ)
2>ShaderProgram.obj : error LNK2019: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::generic_category(void)" (?generic_category#system#boost##YAABVerror_category#12#XZ) referenced in function "void __cdecl boost::system::`dynamic initializer for 'errno_ecat''(void)" (??__Eerrno_ecat#system#boost##YAXXZ)
2>ShaderProgram.obj : error LNK2019: unresolved external symbol "void __cdecl boost::filesystem::path_traits::convert(char const *,char const *,class std::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> > &,class std::codecvt<wchar_t,char,int> const &)" (?convert#path_traits#filesystem#boost##YAXPBD0AAV?$basic_string#_WU?$char_traits#_W#std##V?$allocator#_W#2##std##ABV?$codecvt#_WDH#5##Z) referenced in function "public: __thiscall boost::filesystem::path::path<char const [8]>(char const (&)[8],void *)" (??$?0$$BY07$$CBD#path#filesystem#boost##QAE#AAY07$$CBDPAX#Z)
2>ShaderProgram.obj : error LNK2019: unresolved external symbol "void __cdecl boost::filesystem::path_traits::convert(wchar_t const *,wchar_t const *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > &,class std::codecvt<wchar_t,char,int> const &)" (?convert#path_traits#filesystem#boost##YAXPB_W0AAV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##ABV?$codecvt#_WDH#5##Z) referenced in function "void __cdecl boost::filesystem::path_traits::convert(wchar_t const *,wchar_t const *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > &)" (?convert#path_traits#filesystem#boost##YAXPB_W0AAV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std###Z)
2>ShaderProgram.obj : error LNK2019: unresolved external symbol "public: class boost::filesystem::path & __thiscall boost::filesystem::path::operator/=(class boost::filesystem::path const &)" (??_0path#filesystem#boost##QAEAAV012#ABV012##Z) referenced in function "class boost::filesystem::path __cdecl boost::filesystem::operator/(class boost::filesystem::path const &,class boost::filesystem::path const &)" (??Kfilesystem#boost##YA?AVpath#01#ABV201#0#Z)
2>ShaderProgram.obj : error LNK2019: unresolved external symbol "public: static class std::codecvt<wchar_t,char,int> const & __cdecl boost::filesystem::path::codecvt(void)" (?codecvt#path#filesystem#boost##SAABV?$codecvt#_WDH#std##XZ) referenced in function "public: __thiscall boost::filesystem::path::path<char const [8]>(char const (&)[8],void *)" (??$?0$$BY07$$CBD#path#filesystem#boost##QAE#AAY07$$CBDPAX#Z)
2>C:\Users\Structo\Desktop\ReStructo\build-release\src\Release\ReStructo.exe : fatal error LNK1120: 6 unresolved externals
What I did:
I built boost with:
b2 link=static variant=release runtime-link=static
In my Cmake, I have
set(BUILD_SHARED_LIBS OFF)
set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} "-static")
set(Boost_USE_STATIC_RUNTIME ON)
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREADED ON)
find_package(Boost REQUIRED COMPONENTS filesystem system)
In Visual Studio 2013
I set solution configuration to Release
Runtime library to Multithreaded
Set the path to the .libs in VC++ Directories->Library path
Any idea how I could fix this?
Thank you very much for your time!