--- configure.ac.orig	2009-12-01 19:07:37.000000000 +0200
+++ configure.ac	2010-01-06 19:23:05.000000000 +0200
@@ -717,7 +717,7 @@
         AC_MSG_CHECKING(for user-specified apu-config name/location)
         if test "$withval" != "no" ; then
             if test "$withval" != "yes"; then
-                APR_CONFIG=$withval
+                APU_CONFIG=$withval
                 AC_MSG_RESULT("$withval")
             fi
         fi