* ext/fiddle/*: Adding fiddle library to wrap libffi

* test/fiddle/*: testing fiddle extension
* ext/dl/lib/dl.rb: Requiring fiddle if it is available
* ext/dl/lib/dl/callback.rb: using Fiddle if it is available
* ext/dl/lib/dl/func.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/ext/dl/lib/dl.rb b/ext/dl/lib/dl.rb
new file mode 100644
index 00000000000..168a18a55ee
--- /dev/null
+++ b/ext/dl/lib/dl.rb
@@ -0,0 +1,12 @@
+require 'dl.so'
+
+begin
+  require 'fiddle'
+rescue LoadError
+end
+
+module DL
+  def self.fiddle?
+    Object.const_defined?(:Fiddle)
+  end
+end