--- a/libiberty/aclocal.m4	Tue May 25 18:58:51 2010 +0900
+++ b/libiberty/aclocal.m4	Tue Mar 22 17:18:12 2011 +0900
@@ -172,52 +172,3 @@
         STACK_DIRECTION < 0 => grows toward lower addresses
         STACK_DIRECTION = 0 => direction of growth unknown])
 ])
-
-# AC_LANG_FUNC_LINK_TRY(C)(FUNCTION)
-# ----------------------------------
-# Don't include <ctype.h> because on OSF/1 3.0 it includes
-# <sys/types.h> which includes <sys/select.h> which contains a
-# prototype for select.  Similarly for bzero.
-#
-# This test used to merely assign f=$1 in main(), but that was
-# optimized away by HP unbundled cc A.05.36 for ia64 under +O3,
-# presumably on the basis that there's no need to do that store if the
-# program is about to exit.  Conversely, the AIX linker optimizes an
-# unused external declaration that initializes f=$1.  So this test
-# program has both an external initialization of f, and a use of f in
-# main that affects the exit status.
-#
-m4_define([AC_LANG_FUNC_LINK_TRY(C)],
-[AC_LANG_PROGRAM(
-[/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $1 (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  Under hpux,
-    including <limits.h> includes <sys/time.h> and causes problems
-    checking for functions defined therein.  */
-#if defined (__STDC__) && !defined (_HPUX_SOURCE)
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $1 ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$1) || defined (__stub___$1)
-choke me
-#else
-char (*f) () = $1;
-#endif
-#ifdef __cplusplus
-}
-#endif
-], [return f != $1;])])
-