mirror of
https://git.linuxfromscratch.org/lfs.git
synced 2025-01-18 21:17:38 +00:00
6e6641f9b7
This option makes ld use DT_RUNPATH instead of DT_RPATH. DT_RPATH is generally considered bad because it takes precedence over LD_LIBRARY_PATH. For example, eog is linked with -rpath /usr/lib/eog, and with DT_RPATH if an old eog is already installed we are basically impossible to debug a new eog build w/o overwriting the system installation first or explicitly using "ld.so --inhibit-rpath" to invoke it. This "new" actually means "new in 2000," it's 24 years ago and all other distros has enabled it. Thus I guess some unexplainable "test suite uses installed library instead of the just built one" issues in BLFS are actually caused by this difference: the package author just assumes everyone is using DT_RUNPATH thus they just set LD_LIBRARY_PATH and consider it enough to test with the just built libraries, but DT_RPATH breaks this expectation. Let's eliminate the difference as it seems not doing anything good and doing so just takes one switch.
125 lines
3.9 KiB
XML
125 lines
3.9 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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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-binutils-pass2" role="wrap">
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<?dbhtml filename="binutils-pass2.html"?>
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<sect1info condition="script">
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<productname>binutils-pass2</productname>
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<productnumber>&binutils-version;</productnumber>
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<address>&binutils-url;</address>
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</sect1info>
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<title>Binutils-&binutils-version; - Pass 2</title>
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<indexterm zone="ch-tools-binutils-pass2">
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<primary sortas="a-Binutils">Binutils</primary>
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<secondary>tools, pass 2</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/binutils.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>&binutils-tmpp2-sbu;</seg>
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<seg>&binutils-tmpp2-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 Binutils</title>
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<!-- Don't remove this until Binutils upstream resolves this issue.
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We can test by building Binutils on a complete system with
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zlib (libz.so) installed, passing enable-shared and
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without-system-zlib. If the resulted libctf.so still links against
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libz.so (check with readelf -d) despite we are saying
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without-system-zlib, then the issue is still unresolved. -->
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<para>Binutils building system relies on an shipped libtool copy to link against
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internal static libraries, but the libiberty and zlib copies shipped
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in the package do not use libtool. This inconsistency may cause
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produced binaries mistakenly linked against libraries from the host
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distro. Work around this issue:</para>
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<screen><userinput remap="pre">sed '6009s/$add_dir//' -i ltmain.sh</userinput></screen>
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<para>Create a separate build directory again:</para>
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<screen><userinput remap="pre">mkdir -v build
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cd build</userinput></screen>
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<para>Prepare Binutils for compilation:</para>
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<screen><userinput remap="configure">../configure \
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--prefix=/usr \
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--build=$(../config.guess) \
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--host=$LFS_TGT \
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--disable-nls \
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--enable-shared \
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--enable-gprofng=no \
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--disable-werror \
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--enable-64-bit-bfd \
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--enable-new-dtags \
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--enable-default-hash-style=gnu</userinput></screen>
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<variablelist>
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<title>The meaning of the new configure options:</title>
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<varlistentry>
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<term><parameter>--enable-shared</parameter></term>
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<listitem>
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<para>Builds <filename
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class="libraryfile">libbfd</filename> as a shared library.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>--enable-64-bit-bfd</parameter></term>
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<listitem>
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<para>Enables 64-bit support (on hosts with smaller word sizes).
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This may not be needed on 64-bit systems, but it does no harm.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>Compile the package:</para>
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<screen><userinput remap="make">make</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 files because they are harmful for
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cross compilation, and remove unnecessary static libraries:</para>
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<screen><userinput remap="install">rm -v $LFS/usr/lib/lib{bfd,ctf,ctf-nobfd,opcodes,sframe}.{a,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
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<xref linkend="contents-binutils" role="."/></para>
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</sect2>
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</sect1>
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