# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

function(add_cython_modules python_version)
  find_package(Python3)
  find_program(CYTHON_EXECUTABLE NAMES cython cython.bat cython3)
  if(CYTHON_EXECUTABLE AND Python3_EXECUTABLE)
    add_custom_command(COMMAND ${CMAKE_COMMAND} POST_BUILD
                        -E env MXNET_LIBRARY_PATH=${CMAKE_BINARY_DIR}/libmxnet.so
                        ${Python3_EXECUTABLE} setup.py build_ext --inplace --with-cython
                        TARGET mxnet
                        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/python")
    message("-- Cython modules will be built")
  else()
    message(FATAL_ERROR "-- Cython not found")
  endif()
endfunction()