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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="ch-tools-file" role="wrap">
<?dbhtml filename="file.html"?>
<sect1info condition="script">
<productname>file</productname>
<productnumber>&file-version;</productnumber>
<address>&file-url;</address>
</sect1info>
<title>File-&file-version;</title>
<indexterm zone="ch-tools-file">
<primary sortas="a-File">File</primary>
<secondary>tools</secondary>
</indexterm>
<sect2 role="package">
<title/>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
href="../chapter08/file.xml"
xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem>
<seg>&file-tmp-sbu;</seg>
<seg>&file-tmp-du;</seg>
</seglistitem>
</segmentedlist>
</sect2>
<sect2 role="installation">
<title>Installation of File</title>
<para>
The <command>file</command> command on the build host needs
to be the same version as the one we are building in order to
create the signature file. Run the following commands to make a
temporary copy of the <command>file</command> command:
</para>
<screen><userinput remap="pre">mkdir build
pushd build
../configure --disable-bzlib \
--disable-libseccomp \
--disable-xzlib \
--disable-zlib
make
popd</userinput></screen>
<variablelist>
<title>The meaning of the new configure option:</title>
<varlistentry>
<term><parameter>--disable-*</parameter></term>
<listitem>
<para>The configuration script attempts to use some packages from
the host distribution if the corresponding library files exist.
It may cause compilation failure if a library file exists, but
the corresponding header files do not. These options prevent
using these unneeded capabilities from the host.</para>
</listitem>
</varlistentry>
</variablelist>
<para>Prepare File for compilation:</para>
<screen><userinput remap="configure">./configure --prefix=/usr --host=$LFS_TGT --build=$(./config.guess)</userinput></screen>
<!-- devs: if using - -build here, the build system wants to compile
the signature file with "file" on the build system, but stops if it is not
the same version. One possibility would be to build "file" on the build
system first, but it is simpler to have the system think it is not
cross-compiling, and use the just built "file". -->
<para>Compile the package:</para>
<screen><userinput remap="make">make FILE_COMPILE=$(pwd)/build/src/file</userinput></screen>
<para>Install the package:</para>
<screen><userinput remap="install">make DESTDIR=$LFS install</userinput></screen>
<para>Remove the libtool archive file because it is harmful for cross
compilation:</para>
<screen><userinput remap="install">rm -v $LFS/usr/lib/libmagic.la</userinput></screen>
</sect2>
<sect2 role="content">
<title/>
<para>Details on this package are located in <xref linkend="contents-file" role="."/></para>
</sect2>
</sect1>
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