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Meta: Add a CMake function to download remote files during the build

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This function will handle download failures. It doesn't support hashing
for integrity yet, but if the download times out or otherwise fails, the
build itself will fail. But default, file(DOWNLOAD) in CMake doesn't
fail the build; we must pass in and check a STATUS variable.
This commit is contained in:
Timothy Flynn 2022-01-25 18:36:40 -05:00 • committed by Linus Groh
parent b40308d0a4
commit e805fce46e
Notes: sideshowbarker 2024-07-17 20:12:50 +09:00
1 changed files with 16 additions and 0 deletions
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16
Meta/CMake/utils.cmake
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@ -194,3 +194,19 @@ function(invoke_generator name generator version_file prefix header implementati
add_custom_target("generate_${prefix}${name}" DEPENDS "${header}" "${implementation}")
add_dependencies(all_generated "generate_${prefix}${name}")
endfunction()
function(download_file url path)
if (NOT EXISTS "${path}")
get_filename_component(file "${path}" NAME)
message(STATUS "Downloading file ${file} from ${url}")
file(DOWNLOAD "${url}" "${path}" INACTIVITY_TIMEOUT 10 STATUS download_result)
list(GET download_result 0 status_code)
list(GET download_result 1 error_message)
if (NOT status_code EQUAL 0)
file(REMOVE "${path}")
message(FATAL_ERROR "Failed to download ${url}: ${error_message}")
endif()
endif()
endfunction()