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# Returns the current architecture name in a variable
#
# Usage:
# get_swift_host_arch(result_var_name)
#
# If the current architecture is supported by Swift, sets ${result_var_name}
# with the sanitized host architecture name derived from CMAKE_SYSTEM_PROCESSOR.
function(get_swift_host_arch result_var_name)
if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64")
set("${result_var_name}" "x86_64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "arm64")
set("${result_var_name}" "arm64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "aarch64")
set("${result_var_name}" "aarch64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "ARM64")
set("${result_var_name}" "aarch64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "ppc64")
set("${result_var_name}" "powerpc64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "ppc64le")
set("${result_var_name}" "powerpc64le" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "s390x")
set("${result_var_name}" "s390x" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "armv6l")
set("${result_var_name}" "armv6" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "armv7l")
set("${result_var_name}" "armv7" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "armv7-a")
set("${result_var_name}" "armv7" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "amd64")
set("${result_var_name}" "amd64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "AMD64")
set("${result_var_name}" "x86_64" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "IA64")
set("${result_var_name}" "itanium" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86")
set("${result_var_name}" "i686" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "i686")
set("${result_var_name}" "i686" PARENT_SCOPE)
elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "wasm32")
set("${result_var_name}" "wasm32" PARENT_SCOPE)
else()
message(FATAL_ERROR "Unrecognized architecture on host system: ${CMAKE_SYSTEM_PROCESSOR}")
endif()
endfunction()
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