(executables
  ((names (bench_persistent_read bench_persistent))
   (libraries (sequence benchmark))
   (flags (:standard -w +a-4-42-44-48-50-58-32-60@8 -safe-string -color always))
   (ocamlopt_flags (:standard -O3 -color always
                    -unbox-closures -unbox-closures-factor 20))
  ))