# ===-----------------------------------------------------------------------===#
# Distributed under the 3-Clause BSD License. See accompanying file LICENSE or
# copy at https://opensource.org/licenses/BSD-3-Clause).
# SPDX-License-Identifier: BSD-3-Clause
# ===-----------------------------------------------------------------------===#

set(CPM_DOWNLOAD_VERSION 0.38.5)

if(CPM_SOURCE_CACHE)
    # Expand relative path. This is important if the provided path contains a
    # tilde (~)
    get_filename_component(CPM_SOURCE_CACHE ${CPM_SOURCE_CACHE} ABSOLUTE)
    set(CPM_DOWNLOAD_LOCATION
        "${CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake"
    )
elseif(DEFINED ENV{CPM_SOURCE_CACHE})
    set(CPM_DOWNLOAD_LOCATION
        "$ENV{CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake"
    )
else()
    set(CPM_DOWNLOAD_LOCATION
        "${CMAKE_BINARY_DIR}/cmake/CPM_${CPM_DOWNLOAD_VERSION}.cmake"
    )
endif()

if(NOT (EXISTS ${CPM_DOWNLOAD_LOCATION}))
    message(STATUS "Downloading CPM.cmake to ${CPM_DOWNLOAD_LOCATION}")
    file(
        DOWNLOAD
            https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
            ${CPM_DOWNLOAD_LOCATION}
    )
endif()

include(${CPM_DOWNLOAD_LOCATION})