# =============================================================================
# Copyright (c) 2020-2021, NVIDIA CORPORATION.
#
# 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.
# =============================================================================

# This function finds dlpack and sets any additional necessary environment variables.
function(find_and_configure_dlpack VERSION)

  rapids_find_generate_module(DLPACK HEADER_NAMES dlpack.h)

  rapids_cpm_find(
    dlpack ${VERSION}
    GIT_REPOSITORY https://github.com/dmlc/dlpack.git
    GIT_TAG v${VERSION}
    GIT_SHALLOW TRUE
    DOWNLOAD_ONLY TRUE
    OPTIONS "BUILD_MOCK OFF"
  )

  if(DEFINED dlpack_SOURCE_DIR)
    # otherwise find_package(DLPACK) will set this variable
    set(DLPACK_INCLUDE_DIR
        "${dlpack_SOURCE_DIR}/include"
        PARENT_SCOPE
    )
  endif()
endfunction()

set(CUDF_MIN_VERSION_dlpack 0.5)

find_and_configure_dlpack(${CUDF_MIN_VERSION_dlpack})
