systemd/INSTALL

Usual options for udev installed in the root filesystem are:
  ./configure \
    --prefix=/usr \
    --sysconfdir=/etc \
    --sbindir=/sbin \
    --libdir=/usr/lib64 \
    --with-rootlibdir=/lib64 \
    --libexecdir=/lib/udev \
    --with-selinux

All options:
  --prefix=
      Usually /usr, prefix for man pages, include files.
  --sysconfdir=
      Usually /etc.
  --sbindir=
      Usually /sbin, the place for udevd and udevadm.
  --libexecdir=
      Usually /lib/udev, the udev private directory.
  --enable-debug
      Compile-in verbose debug messages. Usually not needed,
      it increases the size of the binaries.
  --disable-logging
      Disable all logging and compile-out all log strings. This
      is not recommended, as it makes it almost impossible to debug
      udev on the running system.
  --with-selinux
      Link against SELinux libraries to set the expected context
      for created files.
  --disable-rule_generator
      Disable persistent network, cdrom naming support.
  --disable-hwdb
      Disable hardware database support
  --disable-udev_acl
      Disable local user acl permissions support.
  --disable-gudev
      Disable Gobject libudev support.
  --disable-introspection
      Disable Gobject introspection support.
  --disable-keymap
      Disable keymap fixup support.
  --enable-floppy
      Enable legacy floppy support.
  --enable-edd
      Enable disk edd support.
  --enable-action_modeswitch
      Enable action modeswitch support.

The options used in a RPM spec file usually look like:
  %configure \
    --prefix=%{_prefix} \
    --sysconfdir=%{_sysconfdir} \
    --sbindir=/sbin \
    --libdir=%{_libdir} \
    --with-rootlibdir=/%{_lib} \
    --libexecdir=/lib/udev \
    --with-selinux

The defined location for scripts and binaries which are called
from rules is /lib/udev/ on all systems and architectures. Any
other location will break other packages, who rightfully expect
the /lib/udev/ directory, to install their rule helper and udev
rule files.

It is possible to use the /lib/udev/devices/ directory to place
device nodes, directories and symlinks, which are copied to /dev/
at every bootup. That way, nodes for devices which can not be
detected automatically, or are activated on-demand by opening the
pre-existing device node, will be available.

Default udev rules and persistent device naming rules may be required
by other software that depends on the data udev collects from the
devices.