Calling libc from Java.

core.clj

(ns jna-test.core
  (:import (com.sun.jna "Native")))

(gen-interface
 :name jna.CLibrary
 :extends [com.sun.jna.Library]
 :methods [[printf [String] Integer]])

(def glibc (Native/loadLibrary "c" jna.CLibrary))

(defn example [astring]
  (.printf glibc astring)
  (println (str "Length \"" astring " is " (count astring))))