check_c_source_compiles([=[
#include <Windows.h>
int main(int argc, char *argv[]) {
  switch ((LOGICAL_PROCESSOR_RELATIONSHIP)0) {
  case RelationProcessorDie:
  case RelationNumaNodeEx:
    return 0;
  }
  return 0;
}
]=] DISPATCH_HAVE_EXTENDED_SLPI_20348)

add_compile_definitions(DISPATCH_HAVE_EXTENDED_SLPI_20348)