From ab757bdf9da70faf54883e4d7bb4a3209445cf5b Mon Sep 17 00:00:00 2001
From: Roger Pack <rogerpack@roger-packs-macbook-pro.local>
Date: Wed, 24 Sep 2008 11:01:57 -0600
Subject: [PATCH] rename RB_UBF_DFL to RUBY_UBF_IO

---
 ext/extconf.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/extconf.rb b/ext/extconf.rb
index e8df320..0a8ef53 100644
--- a/ext/extconf.rb
+++ b/ext/extconf.rb
@@ -32,7 +32,7 @@ else
   exit 1
 end
 
-if have_func('rb_thread_blocking_region') and have_macro('RB_UBF_DFL', 'ruby.h')
+if have_func('rb_thread_blocking_region') and have_macro('RUBY_UBF_IO', 'ruby.h')
   $CPPFLAGS << " -DHAVE_TBR"
 end