source: general/prog/gcc3.xml@ 9f12e36

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
   "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

    <!-- Inserted as a reminder to do this. The mention of a test suite
         is usually right before the root user installation commands. Please
         delete these 12 (including one blank) lines after you are done.-->

    <!-- Use one of the two mentions below about a test suite,
         delete the line that is not applicable. Of course, if the
         test suite uses syntax other than "make check", revise the
         line to reflect the actual syntax to run the test suite -->

    <!-- <para>This package does not come with a test suite.</para> -->
    <!-- <para>To test the results, issue: <command>make check</command>.</para> -->

  <!ENTITY gcc3-download-http "http://ftp.gnu.org/gnu/gcc/gcc-&gcc3-version;/gcc-&gcc3-version;.tar.bz2">
  <!ENTITY gcc3-download-ftp  "ftp://ftp.gnu.org/gnu/gcc/gcc-&gcc3-version;/gcc-&gcc3-version;.tar.bz2">
  <!ENTITY gcc3-md5sum        "6936616a967da5a0b46f1e7424a06414">
  <!ENTITY gcc3-size          "24 MB">
  <!ENTITY gcc3-buildsize     "433 MB (includes running the test suite)">
  <!ENTITY gcc3-time          "5.2 SBU (additional 11.2 SBU to run the test suite)">
]>

<sect1 id="gcc3" xreflabel="GCC-&gcc3-version;">
  <?dbhtml filename="gcc3.html" ?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>GCC-&gcc3-version;</title>

  <indexterm zone="gcc3">
    <primary sortas="a-GCC-3-3">GCC-&gcc3-version;</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to GCC-&gcc3-version;</title>

    <para>There are several reasons why you may wish to install
    <application>GCC</application>-&gcc3-version;. Some packages have not been
    updated so they can be successfully compiled by
    <application>GCC</application>-&gcc-version; as
    version 4.x.x of <application>GCC</application> is much stricter in
    enforcing coding standards. Additionally, some pre-compiled packages may
    require the <application>GCC</application>-&gcc3-version; libraries at
    run-time. Another reason you may need to install
    <application>GCC</application>-&gcc3-version; is to use the
    <command>g77</command> Fortran 77 compiler provided by pre-4.x.x versions
    of <application>GCC</application>. <application>GCC</application>-4.x.x
    only includes <command>gfortran</command>, a Fortran 95 compatible compiler
    that is not yet ready to be used in a production environment.</para>

    <para>If all you need is a working <command>{f,g}77</command> Fortran 77
    compiler, you may wish to use the one provided by
    <application>GCC</application>-3.4.x. This is what the
    <application>GCC</application> developers recommend. Instructions for
    building the <application>GCC</application>-3.4.x Fortran compiler can be
    found on the
    <ulink url="http://wiki.linuxfromscratch.org/blfs/wiki/gcc3">BLFS
    Wiki</ulink>.</para>

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Download (HTTP): <ulink url="&gcc3-download-http;"/></para>
      </listitem>
      <listitem>
        <para>Download (FTP): <ulink url="&gcc3-download-ftp;"/></para>
      </listitem>
      <listitem>
        <para>Download MD5 sum: &gcc3-md5sum;</para>
      </listitem>
      <listitem>
        <para>Download size: &gcc3-size;</para>
      </listitem>
      <listitem>
        <para>Estimated disk space required: &gcc3-buildsize;</para>
      </listitem>
      <listitem>
        <para>Estimated build time: &gcc3-time;</para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing='compact'>
      <listitem>
        <para>Required patch: <ulink
        url="&patch-root;/gcc-&gcc3-version;-no_fixincludes-1.patch"/></para>
      </listitem>
      <listitem>
        <para>Required patch: <ulink
        url="&patch-root;/gcc-&gcc3-version;-linkonce-1.patch"/></para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">GCC-&gcc3-version; Dependencies</bridgehead>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional"><xref linkend="dejagnu"/> (required to run the full test suite)</para>

    <para condition="html" role="usernotes">User Notes:
    <ulink url="&blfs-wiki;/gcc3"/></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of GCC-&gcc3-version;</title>

    <para>Install <application>GCC</application>-&gcc3-version; by running
    the following commands:</para>

<screen><userinput>patch -Np1 -i ../gcc-&gcc3-version;-no_fixincludes-1.patch &amp;&amp;
patch -Np1 -i ../gcc-&gcc3-version;-linkonce-1.patch &amp;&amp;
mkdir ../gcc-build &amp;&amp;
cd ../gcc-build &amp;&amp;
../gcc-&gcc3-version;/configure --prefix=/opt/gcc-&gcc3-version; \
    --enable-shared --enable-languages=c,c++ --enable-threads=posix &amp;&amp;
make bootstrap</userinput></screen>

    <para>If desired, run the test suite using the following commands. The
    <command>test_summary</command> commands create log files which can be
    compared to known good results located at <ulink
    url="&files-anduin;/gcc336_test.txt"/>.</para>

<screen><userinput>make -k check &amp;&amp;
../gcc-&gcc3-version;/contrib/test_summary >test_summary.log 2>&amp;1 &amp;&amp;
../gcc-&gcc3-version;/contrib/test_summary | \
    grep -A7 Summ >test_summary_short.log 2>&amp;1</userinput></screen>

    <para>Now, as the <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>make install &amp;&amp;
mv -v /opt/gcc-&gcc3-version;/lib/libstdc++.so.5* /usr/lib &amp;&amp;
ln -v -sf /usr/lib/libstdc++.so.5.0.7 /opt/gcc-&gcc3-version;/lib &amp;&amp;
ln -v -sf libstdc++.so.5.0.7 /opt/gcc-&gcc3-version;/lib/libstdc++.so.5 &amp;&amp;
chown -v -R root:root \
    /opt/gcc-&gcc3-version;/lib/gcc-lib/i686-pc-linux-gnu/&gcc3-version;/include</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para><command>mkdir ../gcc-build; cd ../gcc-build</command>: The
    <application>GCC</application> development team recommends
    building in a separate directory.</para>

    <para id='gcc3-lang'><parameter>--enable-shared --enable-languages=c,c++
    --enable-threads=posix</parameter>: Configures
    <application>GCC</application> to build the <application>C</application>
    and <application>C++</application> compilers and enable the related
    <application>C++</application> options. In addition to c and c++, you can
    add f77 for FORTRAN (called <application>g77</application>).  Note that
    <application>GCC-4</application> no longer provides a FORTRAN 77
    compiler.</para>

    <indexterm zone="gcc3  gcc3-lang">
      <primary sortas="b-g77">g77</primary>
    </indexterm>
    <indexterm zone="gcc3 gcc3-lang">
      <primary sortas="b-FORTRAN">FORTRAN</primary>
    </indexterm>

    <para><command>mv -v /opt/gcc-&gcc3-version;/lib/libstdc++.so.5*
    /usr/lib</command>: Moves the <application>C++</application> library to the
    standard lib directory to avoid having to add
    <userinput>/opt/gcc-&gcc3-version;/lib</userinput> to
    <filename>/etc/ld.so.conf</filename>.</para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring GCC-&gcc3-version;</title>

    <sect3>
      <title>Configuration information</title>

      <para>If you only need the GCC-&gcc3-version; C++ library, you may delete
      <filename>/opt/gcc-&gcc3-version;</filename>.</para>

      <para>Whenever you need to use GCC-&gcc3-version; instead of your system
      installed compiler, add
      <filename class="directory">/opt/gcc-&gcc3-version;/bin</filename> to the
      front of your <envar>PATH</envar> or (preferably) set the <envar>CC</envar>
      environment variable before compiling the concerned package.</para>

      <para>If you use <application>g77</application>  programs, you also
      should move the libg2c.* libraries and symbolic links to <filename
      class='directory'>/usr/lib</filename>.  Using export
      LD_LIBRARY_PATH=/opt/gcc-&gcc3-version;/lib or  updating
      <filename>/etc/ld.so.conf</filename> to point to <filename
      class='directory'>/opt/gcc-&gcc3-version;/lib</filename> is not
      recommended as it may conflict with your normal libraries.</para>

    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directory</segtitle>

      <seglistitem>
        <seg>c++, cpp, g++, gcc, gccbug, gcov, and architecture specific
        names of these programs.</seg>
        <seg>libgcc_s.so, libiberty.a, libstdc++.{a,so}, libsupc++.a, and other
        support libraries and files.</seg>
        <seg>/opt/gcc-&gcc3-version;</seg>
      </seglistitem>
    </segmentedlist>

    <bridgehead renderas="sect3">Short Descriptions</bridgehead>

    <para>The GCC-&gcc3-version; package contains the
    <command>gcc</command>-&gcc3-version; <application>C</application> and
    <application>C++</application> compilers and the GCC-&gcc3-version;
    <filename>libstdc++.so</filename> library that is required by some
    commercial and pre-compiled packages.</para>

  </sect2>

</sect1>