+#AC_ARG_ENABLE(quota, AC_HELP_STRING([--enable-quota],
+# [Enable quota statistics (experimental, disabled by default)]),
+# [], [enable_quota="no"])
+#if test "x$enable_quota" = "xno"
+#then
+# collect_quota=0
+#else
+# if test "x$enable_quota" = "xyes"
+# then
+# collect_quota=1
+# else
+# AC_MSG_NOTICE([Please specify either --enable-quota or --disable-quota; Enabling quota statistics.])
+# collect_quota=1
+# enable_quota="yes"
+# fi
+#fi
+#AC_DEFINE_UNQUOTED(COLLECT_QUOTA, [$collect_quota],
+# [Wether or not to collect quota statistics])
+#AM_CONDITIONAL(BUILD_MODULE_QUOTA, test "x$enable_quota" = "xyes")
+