[89afa22] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-tools-libstdcpp" role="wrap">
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| 9 | <?dbhtml filename="gcc-libstdc++.html"?>
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| 10 |
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| 11 | <sect1info condition="script">
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[6070f51] | 12 | <productname>gcc-libstdc++</productname>
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[89afa22] | 13 | <productnumber>&gcc-version;</productnumber>
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| 14 | <address>&gcc-url;</address>
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| 15 | </sect1info>
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| 16 |
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[1067bac] | 17 | <title>Libstdc++ from GCC-&gcc-version;</title>
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[89afa22] | 18 |
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| 19 | <indexterm zone="ch-tools-libstdcpp">
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| 20 | <primary sortas="a-GCC">GCC</primary>
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| 21 | <secondary>tools, libstdc++</secondary>
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| 22 | </indexterm>
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| 23 |
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| 24 | <sect2 role="package">
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| 25 | <title/>
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| 26 |
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[1067bac] | 27 | <para>Libstdc++ is the standard C++ library. It is needed
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| 28 | to compile C++ code
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| 29 | (part of GCC is written in C++), but we had to defer its installation
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| 30 | when we built <xref linkend="ch-tools-gcc-pass1"/>
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| 31 | because it depends on glibc, which was not yet available in /tools.
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| 32 | </para>
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[89afa22] | 33 |
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| 34 | <segmentedlist>
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| 35 | <segtitle>&buildtime;</segtitle>
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| 36 | <segtitle>&diskspace;</segtitle>
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| 37 |
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| 38 | <seglistitem>
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| 39 | <seg>&libstdcpp-ch5-sbu;</seg>
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| 40 | <seg>&libstdcpp-ch5-du;</seg>
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| 41 | </seglistitem>
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| 42 | </segmentedlist>
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| 43 |
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| 44 | </sect2>
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| 45 |
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| 46 | <sect2 role="installation">
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| 47 | <title>Installation of Target Libstdc++</title>
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| 48 |
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| 49 | <note>
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| 50 | <para><application>Libstdc++</application> is part of the GCC sources.
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| 51 | You should first unpack the GCC tarball and change to the
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| 52 | <filename>gcc-&gcc-version;</filename> directory.</para>
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| 53 | </note>
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| 54 |
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[f1dd547] | 55 | <para>Create a separate build directory for Libstdc++ and enter it:</para>
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[89afa22] | 56 |
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[f1dd547] | 57 | <screen><userinput remap="pre">mkdir -v build
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| 58 | cd build</userinput></screen>
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[89afa22] | 59 |
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| 60 | <para>Prepare Libstdc++ for compilation:</para>
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| 61 |
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[f1dd547] | 62 | <screen><userinput remap="configure">../libstdc++-v3/configure \
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[3dc9543] | 63 | --host=$LFS_TGT \
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| 64 | --prefix=/tools \
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| 65 | --disable-multilib \
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| 66 | --disable-nls \
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| 67 | --disable-libstdcxx-threads \
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| 68 | --disable-libstdcxx-pch \
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[89afa22] | 69 | --with-gxx-include-dir=/tools/$LFS_TGT/include/c++/&gcc-version;</userinput></screen>
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| 70 |
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| 71 | <variablelist>
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| 72 | <title>The meaning of the configure options:</title>
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| 73 |
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| 74 | <varlistentry>
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| 75 | <term><parameter>--host=...</parameter></term>
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| 76 | <listitem>
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| 77 | <para>Indicates to use the cross compiler we have just built
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| 78 | instead of the one in <filename>/usr/bin</filename>.</para>
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| 79 | </listitem>
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| 80 | </varlistentry>
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| 81 |
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| 82 | <varlistentry>
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| 83 | <term><parameter>--disable-libstdcxx-threads</parameter></term>
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| 84 | <listitem>
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[3375f61] | 85 | <para>Since we have not yet built the C threads library, the C++
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| 86 | one cannot be built either.</para>
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[89afa22] | 87 | </listitem>
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| 88 | </varlistentry>
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| 89 |
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| 90 | <varlistentry>
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| 91 | <term><parameter>--disable-libstdcxx-pch</parameter></term>
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| 92 | <listitem>
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| 93 | <para>This switch prevents the installation of precompiled
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| 94 | include files, which are not needed at this stage.</para>
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| 95 | </listitem>
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| 96 | </varlistentry>
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| 97 |
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| 98 | <varlistentry>
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[c5be634] | 99 | <term><parameter>--with-gxx-include-dir=/tools/$LFS_TGT/include/c++/&gcc-version;</parameter></term>
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[89afa22] | 100 | <listitem>
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| 101 | <para>This is the location where the standard include files are
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| 102 | searched by the C++ compiler. In a normal build, this information
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| 103 | is automatically passed to the Libstdc++ <command>configure</command>
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[edbeeb5] | 104 | options from the top level directory. In our case, this information
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[4783efe] | 105 | must be explicitly given.</para>
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[89afa22] | 106 | </listitem>
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| 107 | </varlistentry>
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| 108 |
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| 109 | </variablelist>
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| 110 |
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| 111 | <para>Compile libstdc++ by running:</para>
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| 112 |
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| 113 | <screen><userinput remap="make">make</userinput></screen>
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| 114 |
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| 115 | <para>Install the library:</para>
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| 116 |
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| 117 | <screen><userinput remap="install">make install</userinput></screen>
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| 118 |
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| 119 | </sect2>
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| 120 |
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| 121 | <sect2 role="content">
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| 122 | <title/>
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| 123 |
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| 124 | <para>Details on this package are located in
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| 125 | <xref linkend="contents-gcc" role="."/></para>
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| 126 |
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| 127 | </sect2>
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| 128 |
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| 129 | </sect1>
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