diff --git a/ChangeLog b/ChangeLog
index 7958a0ec04..e591ba3351 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jun 29 15:32:00 2007  Koichi Sasada  <ko1@atdot.net>
+
+	* configure.in: add fastcall attribute check.
+
 Fri Jun 29 14:51:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* parse.y (assoc_list): remove expanded hash literal (no splat).
diff --git a/configure.in b/configure.in
index 039265f175..741bfd9222 100644
--- a/configure.in
+++ b/configure.in
@@ -356,6 +356,7 @@ RUBY_FUNC_ATTRIBUTE(deprecated, DEPRECATED)
 RUBY_FUNC_ATTRIBUTE(noinline, NOINLINE)
 RUBY_FUNC_ATTRIBUTE(stdcall)
 RUBY_FUNC_ATTRIBUTE(cdecl)
+RUBY_FUNC_ATTRIBUTE(fastcall)
 
 AC_CACHE_CHECK([for RUBY_EXTERN], rb_cv_ruby_extern,
 [rb_cv_ruby_extern=no