+diff -urN asterisk-1.4.11.orig/acinclude.m4 asterisk-1.4.11/acinclude.m4
+--- asterisk-1.4.11.orig/acinclude.m4 2008-09-13 04:34:47.000000000 +0200
++++ asterisk-1.4.11/acinclude.m4 2008-09-13 04:35:19.000000000 +0200
+@@ -585,7 +585,7 @@
+ [assume the C compiler uses GNU ld @<:@default=no@:>@])],
+ [test "$withval" = no || with_gnu_ld=yes],
+ [with_gnu_ld=no])
+-AC_REQUIRE([AST_PROG_SED])dnl
++AC_REQUIRE([AC_PROG_SED])dnl
+ AC_REQUIRE([AC_PROG_CC])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+ AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+@@ -690,28 +690,6 @@
+ AC_SUBST([EGREP])
+ ])]) # AST_PROG_EGREP
+
+-# AST_PROG_SED
+-# -----------
+-# Check for a fully functional sed program that truncates
+-# as few characters as possible. Prefer GNU sed if found.
+-AC_DEFUN([AST_PROG_SED],
+-[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED,
+- [dnl ac_script should not contain more than 99 commands (for HP-UX sed),
+- dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed.
+- ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+- for ac_i in 1 2 3 4 5 6 7; do
+- ac_script="$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
+-
+ dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+ dnl
+ dnl @summary figure out how to build C programs using POSIX threads