mirror of
https://git.linuxfromscratch.org/lfs.git
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430a8de69f
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@12169 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
124 lines
3.8 KiB
XML
124 lines
3.8 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-libstdcpp-pass1" role="wrap">
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<?dbhtml filename="gcc-libstdc++-pass1.html"?>
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<sect1info condition="script">
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<productname>gcc-libstdc++</productname>
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<productnumber>&gcc-version;</productnumber>
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<address>&gcc-url;</address>
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</sect1info>
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<title>Libstdc++ from GCC-&gcc-version;, Pass 1</title>
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<indexterm zone="ch-tools-libstdcpp-pass1">
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<primary sortas="a-GCC">GCC</primary>
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<secondary>tools, libstdc++ pass 1</secondary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<para>Libstdc++ is the standard C++ library. It is needed
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to compile C++ code
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(part of GCC is written in C++), but we had to defer its installation
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when we built <xref linkend="ch-tools-gcc-pass1"/>
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because it depends on glibc, which was not yet available in the target
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directory.
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</para>
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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>&libstdcpp-tmpp1-sbu;</seg>
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<seg>&libstdcpp-tmpp1-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 Target Libstdc++</title>
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<note>
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<para><application>Libstdc++</application> is part of the GCC sources.
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You should first unpack the GCC tarball and change to the
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<filename>gcc-&gcc-version;</filename> directory.</para>
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</note>
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<para>Create a separate build directory for libstdc++ and enter it:</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 libstdc++ for compilation:</para>
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<screen><userinput remap="configure">../libstdc++-v3/configure \
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--host=$LFS_TGT \
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--build=$(../config.guess) \
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--prefix=/usr \
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--disable-multilib \
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--disable-nls \
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--disable-libstdcxx-pch \
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--with-gxx-include-dir=/tools/$LFS_TGT/include/c++/&gcc-version;</userinput></screen>
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<variablelist>
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<title>The meaning of the configure options:</title>
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<varlistentry>
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<term><parameter>--host=...</parameter></term>
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<listitem>
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<para>Specifies that the cross compiler we have just built
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should be used instead of the one in
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<filename>/usr/bin</filename>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>--disable-libstdcxx-pch</parameter></term>
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<listitem>
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<para>This switch prevents the installation of precompiled
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include files, which are not needed at this stage.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>--with-gxx-include-dir=/tools/$LFS_TGT/include/c++/&gcc-version;</parameter></term>
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<listitem>
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<para>This is the location where the C++ compiler should search for the
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standard include files. In a normal build, this information
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is automatically passed to the libstdc++ <command>configure</command>
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options from the top level directory. In our case, this information
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must be explicitly given.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>Compile libstdc++ by running:</para>
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<screen><userinput remap="make">make</userinput></screen>
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<para>Install the library:</para>
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<screen><userinput remap="install">make DESTDIR=$LFS install</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-gcc" role="."/></para>
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</sect2>
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</sect1>
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