(compile -s -O3 -d1 numbers.scm -lgmp 
	 -j numbers)

(compile -O3 -d1 numbers.scm -c
	 -unit numbers -o numbers-static.o)

(compile -s -O3 -d0 numbers.import.scm)

(install-extension
  'numbers
  '("numbers.so" "numbers-static.o" "numbers.import.so")
  `((version "1.82")
    (static "numbers-static.o")
    (static-options "-lgmp")))