Cmake,clang, crosscompile toolchain 2

#specify target system
set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_CROSSCOMPILING ON)

set(LLVM_BASE_DIR /usr/lib/llvm-10/bin)

#specify compiler
set(CMAKE_C_COMPILER ${LLVM_BASE_DIR}/clang-cl)
set(CMAKE_CXX_COMPILER ${LLVM_BASE_DIR}/clang-cl)

#set(CMAKE_RC_COMPILER /run/windows/msvc2017/bin/Hostx64/x64/rc.exe)
set(CMAKE_RC_COMPILER ${LLVM_BASE_DIR}/llvm-rc)
set(CMAKE_RC_COMPILER_INIT ${LLVM_BASE_DIR}/llvm-rc)

set(CMAKE_CXX_LINKER_EXECUTABLE ${LLVM_BASE_DIR}/lld-link)
set(CMAKE_CXX_LINK_EXECUTABLE ${LLVM_BASE_DIR}/lld-link)

set(CMAKE_C_LINKER_EXECUTABLE ${LLVM_BASE_DIR}/lld-link)
set(CMAKE_C_LINK_EXECUTABLE ${LLVM_BASE_DIR}/lld-link)

set(CMAKE_LINKER ${LLVM_BASE_DIR}/lld-link)
set(CMAKE_MT /bin/true)

SET(ARCH_ x64)
SET(CMAKE_FIND_ROOT_PATH
  /var/win10_sdk
  /
  )

#path to system libraries
include_directories(SYSTEM /var/win10_sdk/
                    SYSTEM /var/win10_sdk/include/
                    SYSTEM /var/win10_sdk/include/um
                    SYSTEM /var/win10_sdk/include/ucrt/
                    SYSTEM /var/win10_sdk/include/shared/
                    SYSTEM /var/win10_sdk/include/ucrt/sys/)


link_directories(/var/win10_sdk/lib/amd64)
link_directories(/var/win10_sdk/lib/um/x64)
link_directories(/var/win10_sdk/lib/ucrt/x64)
#link_directories(/var/win10_sdk/lib/store/amd64/)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)