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+Tue Oct 26 09:13:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (rb_cv_gcc_atomic_builtins): check for atomic
+	  builtins, all are not available in Apple derivative gcc.
+
 Tue Oct 26 00:29:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* Makefile.in (pkgconfig-data): create pkg-config metadata file.