(compile -O2 -d1 -s "leveldb.scm" -Iinclude -lleveldb -J)
(compile -O2 -d0 -s "leveldb.import.scm")
(compile -O2 -d1 -c "leveldb.scm" -Iinclude -unit "leveldb" -o "leveldb-static.o")

(install-extension
  'leveldb
  '("leveldb.so" "leveldb.import.so" "leveldb-static.o")
  '((version "3.0.2")
    (static "leveldb-static.o")))