build_configuration.rb

configuration do |c|
	# The name for your resulting application file (e.g., if the project_name is 'foo' then you'll get foo.jar, foo.exe, etc.)
	# default value: "test"
	#
	c.project_name = "test"

	# Undocumented option 'output_dir'
	# default value: "package"
	#
	c.output_dir = "package"

	# The type of executable to create (console or gui)
	# default value: "gui"
	#
	#c.executable_type = "gui"
        c.executable_type = "console"

	# The main ruby file to invoke, minus the .rb extension
	# default value: "main"
	#
	#c.main_ruby_file = "main"
        c.main_ruby_file = "foo"

	# The fully-qualified name of the main Java file used to initiate the application.
	# default value: "org.rubyforge.rawr.Main"
	#
	c.main_java_file = "org.rubyforge.rawr.Main"

	# A list of directories where source files reside
	# default value: ["src"]
	#
	#c.source_dirs = ["src"]
        c.source_dirs = ["src", "lib/ruby"]

	# A list of regexps of files to exclude
	# default value: []
	#
	#c.source_exclude_filter = []

	# The base directory that holds Mirah files, or subdirectories with Mirah files.
	# default value: "src"
	#
	#c.mirah_source_root = "src"

	# Whether Ruby source files should be compiled into .class files
	# default value: true
	#
	c.compile_ruby_files = true

	# A list of individual Java library files to include.
	# default value: []
	#
	#c.java_lib_files = []

	# A list of directories for rawr to include . All files in the given directories get bundled up.
	# default value: ["lib/java"]
	#
	c.java_lib_dirs = ["lib/java"]

	# Undocumented option 'files_to_copy'
	# default value: []
	#
	#c.files_to_copy = []

	# Undocumented option 'target_jvm_version'
	# default value: 1.6
	#
	#c.target_jvm_version = 1.6

	# Undocumented option 'jvm_arguments'
	# default value: ""
	#
	#c.jvm_arguments = ""

	# Undocumented option 'java_library_path'
	# default value: ""
	#
	#c.java_library_path = ""

	# Undocumented option 'extra_user_jars'
	# default value: {}
	#
	#c.extra_user_jars[:data] = { :directory => 'data/images/png',
	#                             :location_in_jar => 'images',
	#                             :exclude => /*.bak$/ }

	# Undocumented option 'mac_do_not_generate_plist'
	# default value: nil
	#
	#c.mac_do_not_generate_plist = nil

	# Undocumented option 'mac_icon_path'
	# default value: nil
	#
	#c.mac_icon_path = nil

	# Undocumented option 'windows_icon_path'
	# default value: nil
	#
	#c.windows_icon_path = nil

end

output.txt

Mac-Pro:test cremes$ rake rawr:jar
Loaded /Users/cremes/.rvm/gems/jruby-1.6.3/gems/rawr-1.6.0/lib/rawr/core_ext.rb
javac -target 1.6 -cp lib/java/jruby-complete.jar:src:lib/ruby -sourcepath src:lib/ruby -d package/classes/java src/org/rubyforge/rawr/Main.java
Compile src/foo.rb into package/classes/ruby/foo.class
   compile_dirs has src_dirs = ["src", "lib/ruby"]
   glob_ruby_files has directory 'src' glob ["src/foo.rb"]
files for src: 1
   glob_ruby_files has directory 'lib/ruby' glob []
files for lib/ruby: 0
   ruby_globs.each has glob_data = #<OpenStruct files=["foo.rb"], directory="src">
    Go compile ["src/foo.rb"]
   ruby_globs.each has glob_data = #<OpenStruct files=[], directory="lib/ruby">
=== Creating jar file: package/jar/test.jar
Mac-Pro:test cremes$ java -classpath .:package/jar/lib/java/jruby-complete.jar package/jar/test.jar
Exception in thread "main" java.lang.NoClassDefFoundError: package/jar/test/jar
Caused by: java.lang.ClassNotFoundException: package.jar.test.jar
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)