message: Fix cmake on windows when not building python extension
diff: @@ -241,6 +241,9 @@ if(BUILD_PYTHON)
  target_link_libraries(onnx_cpp2py_export PRIVATE onnx)
  if(MSVC)
  + find_package(PythonInterp ${PY_VERSION} REQUIRED)
  + find_package(PythonLibs ${PY_VERSION} REQUIRED)
  + target_link_libraries(onnx_cpp2py_export PRIVATE ${PYTHON_LIBRARIES})
  target_compile_options(onnx_cpp2py_export PRIVATE
  /MP
  /MX
  @@ -269,9 +272,6 @@ set(ONNX_INCLUDE_DIRS "${ONNX_ROOT}" "${CMAKE_CURRENT_BINARY_DIR}")
  set(ONNX_INCLUDE_DIRS ${ONNX_INCLUDE_DIRS} PARENT_SCOPE)
  if (MSVC)
  - find_package(PythonInterp ${PY_VERSION} REQUIRED)
  - find_package(PythonLibs ${PY_VERSION} REQUIRED)
  - target_link_libraries(onnx_cpp2py_export PRIVATE ${PYTHON_LIBRARIES})
  target_compile_options(onnx_proto PRIVATE
  /MP
  /MX
  