source: x/lib/mesalib.xml@ 4e88613

<?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;

  <!ENTITY mesalib-download-http "http://downloads.sourceforge.net/mesa3d/MesaLib-&mesalib-version;.tar.bz2">
  <!ENTITY mesalib-download-ftp  " ">
  <!ENTITY mesalib-md5sum        "61beda590bfc5b4a12e979d5f2d70d7a">
  <!ENTITY mesalib-size          "3.3 MB">
  <!ENTITY mesalib-buildsize     "823 MB">
  <!ENTITY mesalib-time          "1.7 SBU">
]>

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

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

  <title>MesaLib-&mesalib-version;</title>

  <indexterm zone="mesalib">
    <primary sortas="a-MesaLib">MesaLib</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to MesaLib</title>

    <para><application>Mesa</application> is an OpenGL compatible 3-D graphics
    library.</para>

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

    <bridgehead renderas="sect3">MesaLib Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required"><xref linkend="xorg7-lib"/>,
    <xref linkend="xorg7-util"/>, and
    <xref linkend="libdrm"/></para>

    <note>
      <para>It is not recommended to build a newer version of
      <application>Mesa</application> with <xref linkend="xfree86"/> or
      <xref linkend="xorg"/>.</para>
    </note>

    <bridgehead renderas="sect3">Recommended Download</bridgehead>
    <para><ulink
    url="http://downloads.sourceforge.net/mesa3d/MesaDemos-&mesalib-version;.tar.bz2">MesaDemos-&mesalib-version;</ulink>
    provides a demo and a diagnostic program to verify that GL is working
    properly.</para>

    <bridgehead renderas="sect3">Optional Download</bridgehead>
    <para><ulink
    url="http://downloads.sourceforge.net/mesa3d/MesaGLUT-&mesalib-version;.tar.bz2">MesaGLUT-&mesalib-version;</ulink>
    provides a working <filename class='libraryfile'>libglut</filename>.</para>

    <note>
      <para>You should extract all three tarballs from the same toplevel
      directory.  All three files will extract to the
      <filename class="directory">Mesa-&mesalib-version;</filename>
      directory.</para>
    </note>

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

  </sect2>

  <sect2 role="installation">
    <title>Installation of MesaLib</title>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../xincludes/xorg7-only.xml"/>

    <para>You will need to adjust the commands below to reflect the
    installation prefix of the X Window System.  First, correct several
    hard coded directories in the source files with the following
    commands:</para>

<screen><userinput>find . -type f -exec sed -i "s@/usr/X11R6@$XORG_PREFIX@g" {} \; &amp;&amp;
sed -i 's@lib/modules@lib/X11/modules@' src/glx/x11/dri_glx.c &amp;&amp;
sed -i 's@lib/modules@lib/X11/modules@' \
    src/mesa/drivers/dri/Makefile.template</userinput></screen>

    <para>Fix an error with output redirection if <command>/bin/sh</command>
    is not the <application>Bash</application> shell on your system:</para>

<screen><userinput>sed -i 's%&gt;&amp; /dev/null%&gt;/dev/null%' src/mesa/drivers/dri/Makefile.template</userinput></screen>

    <para>Build <application>MesaLib</application>
    by running the following command:</para>

<screen><userinput>make OPT_FLAGS="-O2 -fno-strict-aliasing" linux-dri-x86</userinput></screen>

    <para>This package does not come with a test suite.</para>

    <para>Now, as the <systemitem class="username">root</systemitem> user,
    issue the following commands to install
    <application>MesaLib</application>:</para>

<screen role="root"><userinput>bin/installmesa $XORG_PREFIX</userinput></screen>

    <para>While still the root user, install the modules for
    Xorg-&xorg7-version; with the following commands.</para>

<screen role="root"><userinput>mkdir -v -p $XORG_PREFIX/lib/X11/modules/dri &amp;&amp;
install -v -m755 lib/*dri* $XORG_PREFIX/lib/X11/modules/dri</userinput></screen>

    <para>If you've extracted the Demos package as well, then
    build the test programs with the following commands:</para>

<screen><userinput>sed -i 's@-l$(GLUT_LIB)@@g' configs/default &amp;&amp;
cd progs/xdemos &amp;&amp;
make PROGS='glxinfo glxgears'</userinput></screen>

    <para>Install the demos as the
    <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>install -v -m755 glxinfo glxgears $XORG_PREFIX/bin</userinput></screen>

    <note>
      <para>Do not remove the Mesa source tree yet, it will be required to
      build the <xref linkend="xorg7-server"/>.</para>
    </note>

    <para>Finally, if installing to any prefix other than
    <filename class="directory">/usr</filename>, you should create symlinks
    to the GL headers in <filename class="directory">/usr/include</filename>.
    Execute the following command as the
    <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>ln -s -v $XORG_PREFIX/include/GL /usr/include</userinput></screen>

  </sect2>

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

    <para><command>find...sed -i
    "s@/usr/X11R6@$XORG_PREFIX@"...</command>:
    This command corrects several hard coded references to the X11R6 default
    installation path.</para>

    <para><command>sed -i 's@lib/modules@lib/X11/modules@'
    src/glx/x11/dri_glx.c</command>: This command corrects a hard coded
    reference to the module directory.</para>

    <para><command>make OPT_FLAGS=... linux-dri-x86</command>: A bug where
    OpenGL applications are shifted to the left by 50% can be worked around
    by adding <option>-fno-strict-aliasing</option> to the compiler flags.
    Also, the <option>linux-dri-x86</option> target is specified to use a
    few other helpful flags in addition to the defaults. See the other
    targets in the <filename class="directory">configs</filename> directory
    if your architecture is not x86.</para>

    <para><command>bin/installmesa</command>: Mesa uses a custom installation
    script as opposed to the normal <parameter>install</parameter> make
    target.</para>

    <para><command>install -v -m755 lib/*dri*
    $XORG_PREFIX/lib/X11/modules/dri</command>:
    installs the DRI modules.</para>

    <para><command>sed -i 's@-l$(GLUT_LIB)@@g' configs/default</command>:
    disables linking against GLUT libraries for the demo programs.</para>

    <para><command>make PROGS='glxinfo glxgears'</command>: build only
    the glxinfo and glxgears programs.</para>

    <para><command>install -v -m755 glxinfo glxgears
    $XORG_PREFIX/bin</command>:
    Installs only the glxinfo and glxgears programs.</para>

  </sect2>

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

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

      <seglistitem>
        <seg>glxgears and glxinfo</seg>
        <seg>libGL.{so,a}, libGLU.{so,a}, libGLw.{so,a}, libglut.{so,a} and
        *_dri.so</seg>
        <seg>$XORG_PREFIX/lib/modules/dri</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="glxgears">
        <term><filename>glxgears</filename></term>
        <listitem>
          <para>a GL demo useful for troubleshooting graphics problems.</para>
          <indexterm zone="mesalib glxgears">
            <primary sortas="b-glxgears">glxgears</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="glxinfo">
        <term><filename>glxinfo</filename></term>
        <listitem>
          <para>a diagnostic program that displays information about the
          graphics hardware and installed GL libraries.</para>
          <indexterm zone="mesalib glxinfo">
            <primary sortas="b-glxinfo">glxinfo</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>