No-op compile for JRuby in Rakefile

Author: headius

Rakefile

@@ -7,14 +7,20 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
-require 'rake/extensiontask'
-Rake::ExtensionTask.new("syslog_ext") do |ext|
-  ext.ext_dir = 'ext/syslog'
+if RUBY_ENGINE == 'jruby'
+  # nothing to compile for JRuby
+  task :compile do end
+else
+  require 'rake/extensiontask'
+  Rake::ExtensionTask.new("syslog_ext") do |ext|
+    ext.ext_dir = 'ext/syslog'
 
-  # In contrast to "gem install" a "rake compile" is expecting the C-ext file even on Windows.
-  # Work around by creating a dummy so file.
-  task "#{ext.tmp_dir}/#{ext.platform}/stage/lib" do |t|
-    touch "#{ext.tmp_dir}/#{ext.platform}/#{ext.name}/#{RUBY_VERSION}/#{ext.name}.so"
+    # In contrast to "gem install" a "rake compile" is expecting the C-ext file even on Windows.
+    # Work around by creating a dummy so file.
+    task "#{ext.tmp_dir}/#{ext.platform}/stage/lib" do |t|
+      touch "#{ext.tmp_dir}/#{ext.platform}/#{ext.name}/#{RUBY_VERSION}/#{ext.name}.so"
+    end
   end
 end
+
 task :default => :test