* configure.in: fix a build failure on GNU Hurd.

Patch by Samuel Thibault <sthibault at debian dot org>. Thank you!
  [Bug #5250] [ruby-core:39185]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33114 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Aug 30 09:08:22 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* configure.in: fix a build failure on GNU Hurd.
+	  Patch by Samuel Thibault <sthibault at debian dot org>. Thank you!
+	  [Bug #5250] [ruby-core:39185]
+
 Sun Aug 29 23:22:00 2011  Kenta Murata  <mrkn@mrkn.jp>
 
 	* test/ruby/test_numeric.rb (test_num2long): modify a test agaist the

configure.in

@@ -934,6 +934,11 @@ AS_CASE(["$target_os"],
 		AC_DEFINE(SIZEOF_STRUCT_DIRENT_TOO_SMALL, 1)
 		LIBS="-lm $LIBS"
 		],
+# GNU Hurd
+[gnu*], [
+		AC_DEFINE(SIZEOF_STRUCT_DIRENT_TOO_SMALL, 1)
+		LIBS="-lm $LIBS"
+		],
 [nextstep*], [	],
 [openstep*], [	],
 [rhapsody*], [	],