-my $PWD = $ENV{PWD};
-my $sysfs = "sys/";
-my $udev_bin = "../udev/test-udev";
-my $udev_root = "udev-root/";
-my $udev_conf = "udev-test.conf";
-my $udev_rules = "udev-test.rules";
-
-# uncomment following line to run udev with valgrind.
-# Should make this a runtime option to the script someday...
-#my $udev_bin = "valgrind --tool=memcheck --leak-check=yes ../udev";
+my $PWD = $ENV{PWD};
+my $sysfs = "sys/";
+my $udev_bin = "../udev/test-udev";
+my $valgrind = 0;
+my $udev_bin_valgrind = "valgrind --tool=memcheck --leak-check=yes --quiet $udev_bin";
+my $udev_root = "udev-root/";
+my $udev_conf = "udev-test.conf";
+my $udev_rules = "udev-test.rules";