diff --git a/autotools/ac_path_progs_feature_check.m4 b/autotools/ac_path_progs_feature_check.m4
new file mode 100644
index 0000000000000000000000000000000000000000..46a5965a89f6a2bf269194a5a921b9c3e322a177
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+++ b/autotools/ac_path_progs_feature_check.m4
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+# Backport of AC_PATH_PROGS_FEATURE_CHECK from autoconf 2.64
+# (available since version 2.62)
+#
+# The following code comes from lib/autoconf/programs.m4,
+# in the autoconf 2.64 source code. Its copyright is:
+
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
+# Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+# As a special exception, the Free Software Foundation gives unlimited
+# permission to copy, distribute and modify the configure scripts that
+# are the output of Autoconf.  You need not follow the terms of the GNU
+# General Public License when using or distributing such scripts, even
+# though portions of the text of Autoconf appear in them.  The GNU
+# General Public License (GPL) does govern all other use of the material
+# that constitutes the Autoconf program.
+#
+# Certain portions of the Autoconf source text are designed to be copied
+# (in certain cases, depending on the input) into the output of
+# Autoconf.  We call these the "data" portions.  The rest of the Autoconf
+# source text consists of comments plus executable code that decides which
+# of the data portions to output in any given case.  We call these
+# comments and executable code the "non-data" portions.  Autoconf never
+# copies any of the non-data portions into its output.
+#
+# This special exception to the GPL applies to versions of Autoconf
+# released by the Free Software Foundation.  When you make and
+# distribute a modified version of Autoconf, you may extend this special
+# exception to the GPL to apply to your modified version as well, *unless*
+# your modified version has the potential to copy into its output some
+# of the text that was the non-data portion of the version that you started
+# with.  (In other words, unless your change moves or copies text from
+# the non-data portions to the data portions.)  If your modification has
+# such potential, you must delete any notice of this special exception
+# to the GPL from your modified version.
+#
+# Written by David MacKenzie, with help from
+# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
+# Roland McGrath, Noah Friedman, david d zuhn, and many others.
+#
+# The code was modified by ultrotter@google.com, adding surrounding ifdefs.
+
+m4_ifdef([AC_PATH_PROGS_FEATURE_CHECK],,
+  m4_define([AC_PATH_PROGS_FEATURE_CHECK],
+  [_$0([$1], [$2], [$3], m4_default([$4], [:]), [$5])dnl
+  ]))
+
+m4_ifdef([_AC_PATH_PROGS_FEATURE_CHECK],,
+  m4_define([_AC_PATH_PROGS_FEATURE_CHECK],
+  [if test -z "$$1"; then
+    ac_path_$1_found=false
+    # Loop through the user's path and test for each of PROGNAME-LIST
+    _AS_PATH_WALK([$5],
+    [for ac_prog in $2; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        ac_path_$1="$as_dir/$ac_prog$ac_exec_ext"
+        AS_EXECUTABLE_P(["$ac_path_$1"]) || continue
+  $3
+        $ac_path_$1_found && break 3
+      done
+    done])dnl
+    if test -z "$ac_cv_path_$1"; then
+      m4_default([$4],
+        [AC_MSG_ERROR([no acceptable m4_bpatsubst([$2], [ .*]) could be dnl
+  found in m4_default([$5], [\$PATH])])])
+    fi
+  else
+    ac_cv_path_$1=$$1
+  fi
+  ]))
+