diff -r 000000000000 -r 6474c204b198 build/autoconf/acwinpaths.m4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build/autoconf/acwinpaths.m4	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+define(GENERATE_SUB_ABS, [
+define([AC_OUTPUT_FILES_SUB1], [
+patsubst($@, [/\*)], [/* | ?:/*)])
+])
+])
+GENERATE_SUB_ABS(defn([AC_OUTPUT_FILES]))
+
+define(GENERATE_SUB_NOSPLIT, [
+define([AC_OUTPUT_FILES], [
+patsubst($@, [-e "s%:% \$ac_given_srcdir/%g"], [])
+])
+])
+GENERATE_SUB_NOSPLIT(defn([AC_OUTPUT_FILES_SUB1]))
+
+define(GENERATE_HEADER_NOSPLIT, [
+define([AC_OUTPUT_HEADER], [
+patsubst($@, [-e "s%:% \$ac_given_srcdir/%g"], [])
+])
+])
+GENERATE_HEADER_NOSPLIT(defn([AC_OUTPUT_HEADER]))
+
+define(GENERATE_SUBDIRS_ABS, [
+define([AC_OUTPUT_SUBDIRS], [
+patsubst($@, [/\*)], [/* | ?:/*)])
+])
+])
+GENERATE_SUBDIRS_ABS(defn([AC_OUTPUT_SUBDIRS]))