clojure - Can't build a jar using Leiningen -

i'm trying make stand alone jar bare-bones clojure project using leiningen plugin in intellij's cursive.

to create project, created project.clj file, opened it, , cursive offered import project.

project.clj:

(defproject watertimer "1"   :description "a timer reminds drink water"   :main tone-producer/main) 

tone-producer.clj:

(ns tone-producer   (:require [general-helpers :as g])    (:import [javax.sound.midi midisystem                              synthesizer                              midichannel])   (:gen-class))  (defn main [& args]   (println "test!")) 

when run "uberjar" task, following output:

warning: specified :main without including in :aot. implicit aot of :main removed in leiningen 3.0.0. if need aot uberjar, consider adding :aot :all :uberjar profile instead. warning: main-class specified not exist within jar. may not executable expected. gen-class directive may missing in namespace contains main method. created c:\users\slomi\ideaprojects\watertimer\target\watertimer-1.jar created c:\users\slomi\ideaprojects\watertimer\target\watertimer-1-standalone.jar

i tried changing main function have default name, , omit name defproject:

(defproject watertimer "1"   :description "a timer reminds drink water"   :main tone-producer)  (ns tone-producer       (:require [general-helpers :as g])        (:import [javax.sound.midi midisystem                                  synthesizer                                  midichannel])       (:gen-class))      (defn -main [& args]       (println "test!")) 

but error:

error: not find or load main class clojure.main compilation failed: subprocess failed

the structure is:

• watertimer
  • src
    • tone-producer.clj
  • project.clj
  • target

any guidance here appreciated.

after bit of fiddling

• i dropped (:require [general-helpers :as g]) since not necessary demostrate issue
• error: not find or load main class clojure.main compilation failed
  • you didn't include clojure dependency [1]
• :gen-class needs aot - sanchayan pointed out
  • see [2]

project.clj

(defproject watertimer "0.0.1"   :description "a timer reminds drink water"   :dependencies [[org.clojure/clojure "1.8.0"]] ;; <- [1]   :main tone-producer       :aot [tone-producer])  ;; <- [2] 

src/tone_producer.clj - use '_' instead of '-' in filename

(ns tone-producer   (:import [javax.sound.midi midisystem                              synthesizer                              midichannel])   (:gen-class))  (defn -main [& args]   (println "test!")) 

result:

$ lein uberjar compiling tone-producer compiling tone-producer created .../watertimer/target/watertimer-0.0.1.jar created .../watertimer/target/watertimer-0.0.1-standalone.jar $ java -jar target/watertimer-0.0.1-standalone.jar  test! 

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generally i'd recommend init project lein new <name> via command line , import cursive/other ide of choice.