function(download_and_decompress url filename sha256_checksum decompress_dir) if(EXISTS ${filename}) file(SHA256 ${filename} CHECKSUM_VARIABLE) endif() if(NOT EXISTS ${filename} OR NOT CHECKSUM_VARIABLE STREQUAL sha256_checksum) message("Downloading file from ${url} to ${filename} ...") file(DOWNLOAD ${url} "${filename}.tmp" SHOW_PROGRESS EXPECTED_HASH SHA256=${sha256_checksum}) file(RENAME "${filename}.tmp" ${filename}) endif() if(NOT EXISTS ${decompress_dir}) file(MAKE_DIRECTORY ${decompress_dir}) endif() message("Decompress file ${filename} ...") execute_process(COMMAND ${CMAKE_COMMAND} -E tar -xf ${filename} WORKING_DIRECTORY ${decompress_dir}) endfunction() function(get_osx_architecture) if (CMAKE_OSX_ARCHITECTURES STREQUAL "arm64") set(CURRENT_OSX_ARCH "arm64" PARENT_SCOPE) elseif(CMAKE_OSX_ARCHITECTURES STREQUAL "x86_64") set(CURRENT_OSX_ARCH "x86_64" PARENT_SCOPE) else() set(CURRENT_OSX_ARCH ${CMAKE_HOST_SYSTEM_PROCESSOR} PARENT_SCOPE) endif() endfunction() if (APPLE) set(CMAKE_OSX_DEPLOYMENT_TARGET 12.0) get_osx_architecture() endif (APPLE)