* ext/fiddle/extconf.rb: ignore rc version of libffi to fix build failure.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40824 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sun May 19 11:37:36 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* ext/fiddle/extconf.rb: ignore rc version of libffi to fix build failure.
+
 Sun May 19 10:38:50 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* misc/ruby-electric.el (ruby-electric-delete-backward-char): Use

ext/fiddle/extconf.rb

@@ -6,6 +6,7 @@ dir_config 'libffi'
 
 pkg_config("libffi")
 if ver = pkg_config("libffi", "modversion")
+  ver = ver.gsub(/-rc\d+/, '') # If ver contains rc version, just ignored.
   $defs.push(%{-DRUBY_LIBFFI_MODVERSION=#{ '%d%03d%03d' % ver.split('.') }})
 end