-The installation directories are controlled by $prefix, $exec_prefix
-$sysconfdir and $libdir-name. Documentation, development files are
-installed below $prefix, binaries are installed below $exec_prefix,
-libraries below $exec_prefix/$libdir-name.
+The options used in a RPM spec file look like:
+ %configure \
+ --prefix=%{_prefix} \
+ --sysconfdir=%{_sysconfdir} \
+ --bindir=%{_bindir} \
+ --libdir=%{_libdir} \
+ --libexecdir=%{_prefix}/lib/udev \
+ --with-systemdsystemunitdir=%{_prefix}/lib/systemd/system \
+ --with-selinux
+
+The options to install udev in the rootfs instead of /usr,
+and udevadm in /sbin:
+ --bindir=/sbin
+ --libexecdir=/lib/udev
+ --with-systemdsystemunitdir=/lib/systemd/system
+ --with-rootlibdir=/lib64