X-Git-Url: http://erislabs.net/gitweb/?p=gnulib.git;a=blobdiff_plain;f=m4%2Fgnulib-common.m4;fp=m4%2Fgnulib-common.m4;h=3b61b239bebe9be42b8dddd3266437f4235fe1bf;hp=ae31e80d3bfc1a7b5d180d37236475c4cd2349ee;hb=e1c466d11a91615c413789ea8bc3ec358f2c6aa9;hpb=5d14f4f1c3cd98dd1362e3ad73863278d7e4f7e6

diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index ae31e80d3..3b61b239b 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 33
+# gnulib-common.m4 serial 34
 dnl Copyright (C) 2007-2014 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -375,3 +375,7 @@ AC_DEFUN([gl_CACHE_VAL_SILENT],
   AC_CACHE_VAL([$1], [$2])
   as_echo_n="$saved_as_echo_n"
 ])
+
+# AS_VAR_COPY was added in autoconf 2.63b
+m4_define_default([AS_VAR_COPY],
+[AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])])