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function(check_string_option_value option)
get_property(expected_values CACHE ${option} PROPERTY STRINGS)
if(expected_values)
if(${option} IN_LIST expected_values)
return()
endif()
message(FATAL_ERROR "${option} value is \"${${option}}\", but must be one of ${expected_values}.")
endif()
message(AUTHOR_WARNING "The STRINGS property must be set before invoking `check_string_option_value' function.")
endfunction()
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