glfs/postlfs/security/iptables/iptables-exp.xml

<sect2>
<title>Command explanations</title>

<para><parameter>PREFIX=/usr LIBDIR=/lib BINDIR=/sbin</parameter>: Compiles and installs 
<application>iptables</application> libraries into <filename
class="directory">/lib</filename>, binaries into <filename
class="directory">/sbin</filename> and the remainder into the 
<filename class="directory">/usr</filename> hierarchy instead of 
<filename class="directory">/usr/local</filename>. Firewalls are
generally set during the boot process and <filename
class="directory">/usr</filename> may not be mounted at that time.</para>

</sect2>