From feb447e94d812c6d3ed0a42517d804905b4bd830 Mon Sep 17 00:00:00 2001
From: Ralf Corsepius <ralf.corsepius@rtems.org>
Date: Sun, 27 Jul 2008 06:50:08 +0000
Subject: Allow empty configdirs.

---
 acinclude.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 21496ee5d8..896710b409 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -211,7 +211,7 @@ if test "$no_recursion" != yes; then
   esac
 
   ac_popdir=`pwd`
-  for ac_dir in $$1_configdirs; do
+  for ac_dir in : $$1_configdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-- 
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