the file CMakeLists.txt specify an URL for udev: http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html which is not correct. Where can I find the source? Reproducible: Always
It was merged into systemd (http://article.gmane.org/gmane.linux.hotplug.devel/17392). You can get the source here: http://cgit.freedesktop.org/systemd/systemd/tree/src/udev