--- configure.orig	2014-12-06 19:58:24 UTC
+++ configure
@@ -2486,6 +2486,7 @@ case $enable_silent_rules in # (((
    no) AM_DEFAULT_VERBOSITY=1;;
     *) AM_DEFAULT_VERBOSITY=0;;
 esac
+unset enableval
 am_make=${MAKE-make}
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
 $as_echo_n "checking whether $am_make supports nested variables... " >&6; }