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6099a47149
They are really harmful. In Binutils pass 2, libstdc++.la caused the building system to use host /usr/lib/libstdc++.so for gprofng. We now has disabled gprofng for pass 2, but the similar issue also exists in GCC pass 2. In a normal LFS build, the building system silently uses /usr/lib/libstdc++.so (I guess it does not blow up simply because some blind luck); in a real cross build (x86 -> ARM for example) the build will fail. Remove the .la files to fix this issue. Instead of only modifying clfs-ng, it makes more sense to apply the change for trunk: though the build does not fail, using host library is still a contamination.
107 lines
3.3 KiB
XML
107 lines
3.3 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-tools-file" role="wrap">
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<?dbhtml filename="file.html"?>
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<sect1info condition="script">
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<productname>file</productname>
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<productnumber>&file-version;</productnumber>
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<address>&file-url;</address>
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</sect1info>
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<title>File-&file-version;</title>
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<indexterm zone="ch-tools-file">
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<primary sortas="a-File">File</primary>
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<secondary>tools</secondary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="../chapter08/file.xml"
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xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem>
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<seg>&file-tmp-sbu;</seg>
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<seg>&file-tmp-du;</seg>
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</seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of File</title>
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<para>
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The <command>file</command> command on the build host needs
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to be same version as the one we are building in order to
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create the signature file. Run the following commands to build it:
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</para>
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<screen><userinput remap="pre">mkdir build
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pushd build
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../configure --disable-bzlib \
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--disable-libseccomp \
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--disable-xzlib \
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--disable-zlib
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make
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popd</userinput></screen>
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<variablelist>
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<title>The meaning of the new configure option:</title>
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<varlistentry>
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<term><parameter>--disable-*</parameter></term>
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<listitem>
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<para>The configuration script attempts to use some packages from
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the host distribution if the corresponding library files exist.
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It may cause compilation failure if a library file exists, but
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the corresponding header files do not. These options prevent
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using these unneeded capabilities from the host.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>Prepare File for compilation:</para>
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<screen><userinput remap="configure">./configure --prefix=/usr --host=$LFS_TGT --build=$(./config.guess)</userinput></screen>
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<!-- devs: if using - -build here, the build system wants to compile
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the signature file with "file" on the build system, but stops if it is not
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the same version. One possibility would be to build "file" on the build
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system first, but it is simpler to have the system think it is not
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cross-compiling, and use the just built "file". -->
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<para>Compile the package:</para>
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<screen><userinput remap="make">make FILE_COMPILE=$(pwd)/build/src/file</userinput></screen>
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<para>Install the package:</para>
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<screen><userinput remap="install">make DESTDIR=$LFS install</userinput></screen>
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<para>Remove the libtool archive file because it is harmful for cross
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compilation:</para>
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<screen><userinput remap="install">rm -v $LFS/usr/lib/libmagic.la</userinput></screen>
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</sect2>
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<sect2 role="content">
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<title/>
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<para>Details on this package are located in <xref linkend="contents-file" role="."/></para>
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</sect2>
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</sect1>
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