1# Copyright 2021 The gRPC Authors 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15set(_download_archive_TEMPORARY_DIR ${CMAKE_BINARY_DIR}/http_archives) 16file(MAKE_DIRECTORY ${_download_archive_TEMPORARY_DIR}) 17 18# This is basically Bazel's http_archive. 19# Note that strip_prefix strips the directory path prefix of the extracted 20# archive content, and it may strip multiple directories. 21function(download_archive destination url hash strip_prefix) 22 # Fetch and validate 23 set(_TEMPORARY_FILE ${_download_archive_TEMPORARY_DIR}/${strip_prefix}.tar.gz) 24 message(STATUS "Downloading from ${url}, if failed, please try configuring again") 25 file(DOWNLOAD ${url} ${_TEMPORARY_FILE} 26 TIMEOUT 60 27 EXPECTED_HASH SHA256=${hash} 28 TLS_VERIFY ON) 29 # Extract 30 execute_process(COMMAND 31 ${CMAKE_COMMAND} -E tar xvf ${_TEMPORARY_FILE} 32 WORKING_DIRECTORY ${_download_archive_TEMPORARY_DIR} 33 OUTPUT_QUIET) 34 get_filename_component(_download_archive_Destination_Path ${destination} DIRECTORY) 35 file(MAKE_DIRECTORY ${_download_archive_Destination_Path}) 36 file(RENAME ${_download_archive_TEMPORARY_DIR}/${strip_prefix} ${destination}) 37 # Clean up 38 file(REMOVE ${_download_archive_TEMPORARY_DIR}/${strip_prefix}) 39 file(REMOVE ${_TEMPORARY_FILE}) 40endfunction() 41