CPM.cmake

# SPDX-License-Identifier: Apache-2.0
# CPM.cmake bootstrap — downloads CPM.cmake on first use, caches it.
# https://github.com/cpm-cmake/CPM.cmake

set(CPM_DOWNLOAD_VERSION 0.40.5)
set(CPM_HASH_SUM "c46b876ae3b9f994b4f05a4c15553e0485636862064f1fcc9d8b4f832086bc5d")

if(CPM_SOURCE_CACHE)
    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()

# Expand relative path. This is important if the provided path contains a tilde (~)
get_filename_component(CPM_DOWNLOAD_LOCATION ${CPM_DOWNLOAD_LOCATION} ABSOLUTE)

file(DOWNLOAD
    https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
    ${CPM_DOWNLOAD_LOCATION} EXPECTED_HASH SHA256=${CPM_HASH_SUM}
)

include(${CPM_DOWNLOAD_LOCATION})