+# Df plugin: Check if we know how to determine mount points first.
+#if test "x$have_listmntent" = "xyes"; then
+# plugin_df="yes"
+#fi
+if test "x$have_getvfsstat" = "xyes" || test "x$have_getfsstat" = "xyes"
+then
+ plugin_df="yes"
+fi
+if test "x$c_cv_have_two_getmntent" = "xyes" || test "x$have_getmntent" = "xgen" || test "x$have_getmntent" = "xsun"