Visual Studio 2013 cmake toolchain file with win xp support

VS2013winxp.cmake

set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_SYSTEM_VERSION 7.1)

set(MSVC_TOOLSET_VERSION 120)
set(WIN_120XP_SDK "C:/Program Files (x86)/Microsoft SDKs/Windows/v7.1A")
set(MSVC_120_DIR "C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC")

find_program (MSVC_COMPILER cl
    PATHS ${MSVC_120_DIR}/bin/amd64 NO_DEFAULT_PATH REQUIRED)

set(CMAKE_CXX_COMPILER ${MSVC_COMPILER})
set(CMAKE_C_COMPILER ${MSVC_COMPILER})

find_program (CMAKE_MT mt
    PATHS ${WIN_120XP_SDK}/Bin/x64 NO_DEFAULT_PATH REQUIRED)

find_program (CMAKE_RC_COMPILER rc
    PATHS ${WIN_120XP_SDK}/Bin/x64 NO_DEFAULT_PATH REQUIRED)

set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES ${MSVC_120_DIR}/include ${MSVC_120_DIR}/atlmfc/includ ${WIN_120XP_SDK}/include)
set(CMAKE_C_STANDARD_INCLUDE_DIRECTORIES ${MSVC_120_DIR}/include ${MSVC_120_DIR}/atlmfc/includ ${WIN_120XP_SDK}/include)

link_directories(${MSVC_120_DIR}/lib/amd64 ${MSVC_120_DIR}/atlmfc/lib/amd64 ${WIN_120XP_SDK}/Lib/x64)