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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
function(cmake_cuda_architectures_validate lang)
if(DEFINED CMAKE_${lang}_ARCHITECTURES)
if(CMAKE_${lang}_ARCHITECTURES STREQUAL "")
message(FATAL_ERROR "CMAKE_${lang}_ARCHITECTURES must be non-empty if set.")
elseif(CMAKE_${lang}_ARCHITECTURES AND NOT CMAKE_${lang}_ARCHITECTURES MATCHES "^([0-9]+a?(-real|-virtual)?(;[0-9]+a?(-real|-virtual)?|;)*|all|all-major|native)$")
message(FATAL_ERROR
"CMAKE_${lang}_ARCHITECTURES:\n"
" ${CMAKE_${lang}_ARCHITECTURES}\n"
"is not one of the following:\n"
" * a semicolon-separated list of integers, each optionally\n"
" followed by '-real' or '-virtual'\n"
" * a special value: all, all-major, native\n"
)
endif()
endif()
endfunction()
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