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<TITLE>Compilation and Installation</TITLE>

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<H1>Compilation and Installation</H1>

<ol>
<li><a href="#unix-x11">Unix / X11</a>
<li><a href="#windows">Windows</a>
<li><a href="#vms">VMS</a>
<li><a href="#other">Other</a>
</ol>


<a name="unix-x11">
<H2>1. Unix/X11 Compilation and Installation</H1>

<p>
Mesa uses a rather conventional Makefile system.
A GNU autoconf/automake system used to be included, but was discarded
in Mesa 5.1 because:
</p>
<ul>
<li>It seldom worked on IRIX, Solaris, AIX, etc.
<li>It was very compilicated
<li>Nobody maintained it
<li>libtool was just too weird
</ul>
<p>
If someone strongly feels that Mesa should have a autoconf/automake
system and wants to contribute one and maintain it, we'll consider
adding it again.
</p>

<p>
In Mesa 6.1 we modified the conventional Makefile system.
Instead of specifying all the various system configurations in the
Make-config file, there's a directory named <code>configs/</code> which
has an individual file for each configuration.
One of the configs gets copied to <code>configs/current</code>, which
is then included by all Makefiles.
</p>


<h3>1.1 Compilation</h3>

<p>
Note: if you've obtained Mesa through CVS, do this first:
</p>
<pre>
    cd Mesa
    chmod a+x bin/mklib
</pre>

<p>
Just type <b>make</b> in the top-level directory.
You'll see a list of supported system configurations.
Choose one from the list (such as linux-x86), and type:
</p>
<pre>
    make linux-x86
</pre>
<p>
If you want to rebuild for a different configuration run
<code>make realclean</code> before rebuilding.
</p>


<h3>1.2 The libraries</h3>

<p>
When compilation has finished, look in the top-level <b>lib/</b> directory.
You'll see a set of library files similar to this:
</p>
<pre>
lrwxrwxrwx    1 brian    users          10 Mar 26 07:53 libGL.so -> libGL.so.1*
lrwxrwxrwx    1 brian    users          19 Mar 26 07:53 libGL.so.1 -> libGL.so.1.5.060100*
-rwxr-xr-x    1 brian    users     3375861 Mar 26 07:53 libGL.so.1.5.060100*
lrwxrwxrwx    1 brian    users          11 Mar 26 07:53 libGLU.so -> libGLU.so.1*
lrwxrwxrwx    1 brian    users          20 Mar 26 07:53 libGLU.so.1 -> libGLU.so.1.3.060100*
-rwxr-xr-x    1 brian    users      549269 Mar 26 07:53 libGLU.so.1.3.060100*
lrwxrwxrwx    1 brian    users          12 Mar 26 07:53 libglut.so -> libglut.so.3*
lrwxrwxrwx    1 brian    users          16 Mar 26 07:53 libglut.so.3 -> libglut.so.3.7.1*
-rwxr-xr-x    1 brian    users      597754 Mar 26 07:53 libglut.so.3.7.1*
lrwxrwxrwx    1 brian    users          11 Mar 26 08:04 libGLw.so -> libGLw.so.1*
lrwxrwxrwx    1 brian    users          15 Mar 26 08:04 libGLw.so.1 -> libGLw.so.1.0.0*
-rwxr-xr-x    1 brian    users       20750 Mar 26 08:04 libGLw.so.1.0.0*
lrwxrwxrwx    1 brian    users          14 Mar 26 07:53 libOSMesa.so -> libOSMesa.so.6*
lrwxrwxrwx    1 brian    users          23 Mar 26 07:53 libOSMesa.so.6 -> libOSMesa.so.6.1.060100*
-rwxr-xr-x    1 brian    users       23871 Mar 26 07:53 libOSMesa.so.6.1.060100*
</pre>

<p>
<b>libGL</b> is the main OpenGL library (i.e. Mesa).
<br>
<b>libGLU</b> is the OpenGL Utility library.
<br>
<b>libglut</b> is the GLUT library.
<br>
<b>libGLw</b> is the Xt/Motif OpenGL drawing area widget library.
<br>
<b>libOSMesa</b> is the OSMesa (Off-Screen) interface library.
</p>


<h3>1.3 Running the demos</h3>

<p>
If you downloaded/unpacked the MesaDemos-x.y.z.tar.gz archive or
obtained Mesa from CVS, the <b>progs/</b> directory will contain a
bunch of demonstration programs.
</p>

<p>
Before running a demo, you may have to set an environment variable
(such as <b>LD_LIBRARY_PATH</b> on Linux) to indicate where the
libraries are located.  For example:
<p>
<blockquote>
<b>cd</b> into the Mesa <b>lib/</b> directory.
<br>
<b>setenv LD_LIBRARY_PATH ${cwd}</b>   (if using csh or tcsh shell)
<br>
or,
<br>
<b>export LD_LIBRARY_PATH=${PWD}</b>   (if using bash or sh shell)
</blockquote>

<p>
Next, change to the Mesa/demos/ directory:
</p>
<blockquote>
<b>cd ../progs/demos</b>
</blockquote>

<p>
Run a demo such as gears:
</p>
<blockquote>
<b>./gears</b>
</blockquote>

<p>
If this doesn't work, try the <b>Mesa/progs/xdemos/glxinfo</b> program
and see that it prints the expected Mesa version number.
</p>

<p>
If you're using Linux or a similar OS, verify that the demo program is
being linked with the proper library files:
</p>
<blockquote>
<b>ldd gears</b>
</blockquote>

<p>
You should see something like this:
</p>
<pre>
        libglut.so.3 => /home/brian/Mesa/lib/libglut.so.3 (0x40013000)
        libGLU.so.1 => /home/brian/Mesa/lib/libGLU.so.1 (0x40051000)
        libGL.so.1 => /home/brian/Mesa/lib/libGL.so.1 (0x400e0000)
        libc.so.6 => /lib/i686/libc.so.6 (0x42000000)
        libm.so.6 => /lib/i686/libm.so.6 (0x403da000)
        libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x403fc000)
        libXmu.so.6 => /usr/X11R6/lib/libXmu.so.6 (0x404da000)
        libXt.so.6 => /usr/X11R6/lib/libXt.so.6 (0x404f1000)
        libXi.so.6 => /usr/X11R6/lib/libXi.so.6 (0x40543000)
        libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0x4054b000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x405fd000)
        libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x40605000)
        libpthread.so.0 => /lib/i686/libpthread.so.0 (0x40613000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
        libdl.so.2 => /lib/libdl.so.2 (0x40644000)
        libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x40647000)
        libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x40650000)
</pre>

<p>
Retrace your steps if this doesn't look right.
</p>


<H3>1.4 Installing the header and library files</H3>

<p>
The standard location for the OpenGL header files on Unix-type systems is
in <code>/usr/include/GL/</code>.
The standard location for the libraries is <code>/usr/lib/</code>.
For more information see, the
<a href="http://oss.sgi.com/projects/ogl-sample/ABI/" target="_parent">
Linux/OpenGL ABI specification</a>.
</p>

<p>
If you'd like Mesa to co-exist with another implementation of OpenGL that's
already installed, you'll have to choose different directories, like
<code>/usr/local/include/GL/</code> and <code>/usr/local/lib/</code>.
</p>

<p>
To install Mesa's headers and libraries, run <code>make install</code>
You'll be prompted to enter alternative directories for the headers
and libraries.
</p>

<p>
Note: at runtime, you can set the LD_LIBRARY_PATH (on Linux) to switch
between the Mesa libs and another vendor libs whenever you want.
This is a handy way to compare multiple OpenGL implementations.
</p>


<a name="windows">
<H2>2. Windows Compilation and Installation</H1>

<p>
Please see the <a href="README.WIN32">README.WIN32</a> file.
</p>


<a name="vms">
<H2>3. VMS Compilation and Installation</H1>

<p>
Please see the <a href="README.VMS">README.VMS</a> file.
</p>


<a name="other">
<H2>4. Other systems</H1>

<p>
Documentation for other environments (some may be very out of date):
</p>

<UL>
<LI><A HREF="README.GGI">README.GGI</A> - GGI
<LI><A HREF="README.3DFX">README.3DFX</A> - 3Dfx/Glide driver
<LI><A HREF="README.AMIWIN">README.AMIWIN</A> - Amiga Amiwin
<LI><A HREF="README.BEOS">README.BEOS</A> - BeOS
<LI><A HREF="README.D3D">README.D3D</A> - Direct3D driver
<LI><A HREF="README.DJ">README.DJ</A> - DJGPP
<LI><A HREF="README.LYNXOS">README.LYNXOS</A> - LynxOS
<LI><A HREF="README.MINGW32">README.MINGW32</A> - Mingw32
<LI><A HREF="README.NeXT">README.NeXT</A> - NeXT
<LI><A HREF="README.OpenStep">README.OpenStep</A> - OpenStep
<LI><A HREF="README.OS2">README.OS2</A> - OS/2
<LI><A HREF="README.WINDML">README.WINDML</A> - WindML
</UL>


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