chapter07/libstdc++-pass2.xml

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   4   <!ENTITY % general-entities SYSTEM "../general.ent">
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   7
   8 <sect1 id="ch-tools-libstdcpp-pass2" role="wrap">
   9   <?dbhtml filename="gcc-libstdc++-pass2.html"?>
  10
  11   <sect1info condition="script">
  12     <productname>gcc-libstdc++</productname>
  13     <productnumber>&gcc-version;</productnumber>
  14     <address>&gcc-url;</address>
  15   </sect1info>
  16
  17   <title>Libstdc++ from GCC-&gcc-version;, Pass 2</title>
  18
  19   <indexterm zone="ch-tools-libstdcpp-pass2">
  20     <primary sortas="a-GCC">GCC</primary>
  21     <secondary>tools, libstdc++ pass 2</secondary>
  22   </indexterm>
  23
  24   <sect2 role="package">
  25     <title/>
  26
  27     <para>When building <xref linkend="ch-tools-gcc-pass2"/> we had to defer
  28     the installation of the C++ standard library because no suitable compiler
  29     was available to compile it. We could not use the compiler built in that
  30     section because it is a native compiler and should not be used outside of
  31     chroot and risks polluting the libraries with some host components.</para>
  32
  33     <segmentedlist>
  34       <segtitle>&buildtime;</segtitle>
  35       <segtitle>&diskspace;</segtitle>
  36
  37       <seglistitem>
  38         <seg>&libstdcpp-tmpp2-sbu;</seg>
  39         <seg>&libstdcpp-tmpp2-du;</seg>
  40       </seglistitem>
  41     </segmentedlist>
  42
  43   </sect2>
  44
  45   <sect2 role="installation">
  46     <title>Installation of Target Libstdc++</title>
  47
  48     <note>
  49       <para><application>Libstdc++</application> is part of the GCC sources.
  50       You should first unpack the GCC tarball and change to the
  51       <filename>gcc-&gcc-version;</filename> directory.</para>
  52     </note>
  53
  54     <para>Create a link which exists when building libstdc++ in the gcc tree:</para>
  55
  56 <screen><userinput remap="pre">ln -s gthr-posix.h libgcc/gthr-default.h</userinput></screen>
  57
  58     <para>Create a separate build directory for libstdc++ and enter it:</para>
  59
  60 <screen><userinput remap="pre">mkdir -v build
  61 cd       build</userinput></screen>
  62
  63     <para>Prepare libstdc++ for compilation:</para>
  64
  65 <screen><userinput remap="configure">../libstdc++-v3/configure           \
  66     CXXFLAGS="-g -O2 -D_GNU_SOURCE" \
  67     --prefix=/usr                   \
  68     --disable-multilib              \
  69     --disable-nls                   \
  70     --disable-libstdcxx-pch</userinput></screen>
  71
  72     <variablelist>
  73       <title>The meaning of the configure options:</title>
  74
  75       <varlistentry>
  76         <term><parameter>CXXFLAGS="-g -O2 -D_GNU_SOURCE"</parameter></term>
  77         <listitem>
  78           <para>These flags are passed by the top level Makefile when doing
  79           a full build of GCC.</para>
  80         </listitem>
  81       </varlistentry>
  82
  83       <varlistentry>
  84         <term><parameter>--disable-libstdcxx-pch</parameter></term>
  85         <listitem>
  86           <para>This switch prevents the installation of precompiled
  87           include files, which are not needed at this stage.</para>
  88         </listitem>
  89       </varlistentry>
  90
  91     </variablelist>
  92
  93     <para>Compile libstdc++ by running:</para>
  94
  95 <screen><userinput remap="make">make</userinput></screen>
  96
  97     <para>Install the library:</para>
  98
  99 <screen><userinput remap="install">make install</userinput></screen>
 100
 101   </sect2>
 102
 103   <sect2 role="content">
 104     <title/>
 105
 106     <para>Details on this package are located in <xref linkend="contents-gcc" role="."/></para>
 107
 108   </sect2>
 109
 110 </sect1>