# Copyright (c) 2017 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed 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.

include(ExternalProject)

set(LIBMCT_PROJECT "extern_libmct")
if((NOT DEFINED LIBMCT_VER) OR (NOT DEFINED LIBMCT_URL))
  message(STATUS "use pre defined download url")
  set(LIBMCT_VER
      "0.1.0"
      CACHE STRING "" FORCE)
  set(LIBMCT_NAME
      "libmct"
      CACHE STRING "" FORCE)
  set(LIBMCT_DOWNLOAD_FILE
      "${LIBMCT_NAME}.tar.gz"
      CACHE STRING "" FORCE)
  set(LIBMCT_URL
      "https://pslib.bj.bcebos.com/libmct/${LIBMCT_DOWNLOAD_FILE}"
      CACHE STRING "" FORCE)
endif()
message(STATUS "LIBMCT_NAME: ${LIBMCT_NAME}, LIBMCT_URL: ${LIBMCT_URL}")
set(LIBMCT_PREFIX_DIR "${THIRD_PARTY_PATH}/libmct")
set(LIBMCT_DOWNLOAD_DIR
    ${PADDLE_SOURCE_DIR}/third_party/libmct/${CMAKE_SYSTEM_NAME})
set(LIBMCT_DST_DIR "libmct")
set(LIBMCT_INSTALL_ROOT "${THIRD_PARTY_PATH}/install")
set(LIBMCT_INSTALL_DIR ${LIBMCT_INSTALL_ROOT}/${LIBMCT_DST_DIR})
set(LIBMCT_ROOT ${LIBMCT_INSTALL_DIR})
set(LIBMCT_INC_DIR ${LIBMCT_ROOT}/include)
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_RPATH}" "${LIBMCT_ROOT}/lib")

include_directories(${LIBMCT_INC_DIR})

file(
  DOWNLOAD ${LIBMCT_URL} ${LIBMCT_DOWNLOAD_DIR}/${LIBMCT_DOWNLOAD_FILE}
  TLS_VERIFY OFF
  STATUS ERR)

file(
  WRITE ${LIBMCT_DOWNLOAD_DIR}/CMakeLists.txt
  "PROJECT(LIBMCT)\n" "cmake_minimum_required(VERSION 3.0)\n"
  "install(DIRECTORY ./include ./lib \n"
  "        DESTINATION ${LIBMCT_DST_DIR})\n")

ExternalProject_Add(
  ${LIBMCT_PROJECT}
  ${EXTERNAL_PROJECT_LOG_ARGS}
  URL ${LIBMCT_DOWNLOAD_DIR}/${LIBMCT_DOWNLOAD_FILE}
  PREFIX ${LIBMCT_PREFIX_DIR}
  DOWNLOAD_DIR ${LIBMCT_DOWNLOAD_DIR}
  SOURCE_DIR ${LIBMCT_INSTALL_DIR}
  UPDATE_COMMAND ""
  COMMAND ${CMAKE_COMMAND} -E copy ${LIBMCT_DOWNLOAD_DIR}/CMakeLists.txt
          ${LIBMCT_INSTALL_DIR}
  CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${LIBMCT_INSTALL_ROOT}
             -DCMAKE_BUILD_TYPE=${THIRD_PARTY_BUILD_TYPE}
  CMAKE_CACHE_ARGS -DCMAKE_INSTALL_PREFIX:PATH=${LIBMCT_INSTALL_ROOT}
                   -DCMAKE_BUILD_TYPE=${THIRD_PARTY_BUILD_TYPE})

add_library(libmct INTERFACE)

add_dependencies(libmct ${LIBMCT_PROJECT})