diff -Nru asterisk-1.4.23.1.org/autoconf/ast_prog_ld.m4 asterisk-1.4.23.1/autoconf/ast_prog_ld.m4
--- asterisk-1.4.23.1.org/autoconf/ast_prog_ld.m4	2008-10-20 06:45:56.000000000 +0200
+++ asterisk-1.4.23.1/autoconf/ast_prog_ld.m4	2009-01-31 15:46:48.000000000 +0100
@@ -7,7 +7,7 @@
 	[assume the C compiler uses GNU ld @<:@default=no@:>@])],
     [test "$withval" = no || with_gnu_ld=yes],
     [with_gnu_ld=no])
-AC_REQUIRE([AST_PROG_SED])dnl
+AC_REQUIRE([AC_PROG_SED])dnl
 AC_REQUIRE([AC_PROG_CC])dnl
 AC_REQUIRE([AC_CANONICAL_HOST])dnl
 AC_REQUIRE([AC_CANONICAL_BUILD])dnl
diff -Nru asterisk-1.4.23.1.org/autoconf/ast_prog_sed.m4 asterisk-1.4.23.1/autoconf/ast_prog_sed.m4
--- asterisk-1.4.23.1.org/autoconf/ast_prog_sed.m4	2008-10-20 06:45:56.000000000 +0200
+++ asterisk-1.4.23.1/autoconf/ast_prog_sed.m4	1970-01-01 01:00:00.000000000 +0100
@@ -1,21 +0,0 @@
-# AST_PROG_SED
-# -----------
-# Check for a fully functional sed program that truncates
-# as few characters as possible.  Prefer GNU sed if found.
-AC_DEFUN([AST_PROG_SED],
-[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED,
-    [dnl ac_script should not contain more than 99 commands (for HP-UX sed),
-     dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed.
-     ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
-     for ac_i in 1 2 3 4 5 6 7; do
-       ac_script="$ac_script$as_nl$ac_script"
-     done
-     echo "$ac_script" | sed 99q >conftest.sed
-     $as_unset ac_script || ac_script=
-     _AC_PATH_PROG_FEATURE_CHECK(SED, [sed gsed],
-	[_AC_FEATURE_CHECK_LENGTH([ac_path_SED], [ac_cv_path_SED],
-		["$ac_path_SED" -f conftest.sed])])])
- SED="$ac_cv_path_SED"
- AC_SUBST([SED])dnl
- rm -f conftest.sed
-])# AST_PROG_SED