It’s been a couple of times when I ran across a compilation issue while starting up the librarian-clojure project. I guess refactoring in Clojure or any dynamic programming language is not as easy to achieve as in static languages, and perhaps Ahead-of-time (AOT) Compilation could be a solution. I’m yet to join a project with Clojure (or JRuby) as the language so I may find it out one day.
I use lein to manage Clojure projects and learnt to use lein compile.
There’s an issue with lein compile – it doesn’t compile all the available sources which was the feature I was looking for.
To use lein compile you’ll have to define :main [namespace] which will only compile the main namespace pointed out by the namespace option.
(defproject librarian-clojure "0.0.1-SNAPSHOT" :description "Book manager in Clojure" :url "http://github.com/jaceklaskowski/librarian-clojure" ;; removed to ease reading :main librarian-clojure.run)
Run lein compile and you’ll see your main namespace compiled.
jacek:~/oss/librarian-clojure $ lein compile Compiling librarian-clojure.run Compilation succeeded.
I often consult a source code to find answers if it’s available. The sources of the compile task are available, and it’s just a matter of time how much you’ll gain studying the sources. I don’t think you need much to learn a lot.
At line 30 of the compile task I found the value :all of the :aot option. That was it!
(defproject librarian-clojure "0.0.1-SNAPSHOT" :description "Book manager in Clojure" :url "http://github.com/jaceklaskowski/librarian-clojure" ;; removed to ease reading :main librarian-clojure.run :aot :all)
With the change in project.clj, lein compile now processes all the namespaces in the project. Huurray!
jacek:~/oss/librarian-clojure $ lein compile Compiling librarian-clojure.run Compiling librarian-clojure.books Warning: *server* not declared dynamic and thus is not dynamically rebindable, but its name suggests otherwise. Please either indicate ^:dynamic *server* or change the name. Compiling librarian-clojure.core Compiling librarian-clojure.repl Type (go) to launch the server and run a browser. Type (stop) to stop the server. Compiling librarian-clojure.run Compilation succeeded.
You can also specify regex as parameter for :compile option – it will compile only matched namespaces