# Compilation and Installation

1. Unix / X11
2. Windows
3. VMS
4. Other

## 1. Unix/X11 Compilation and Installation

Mesa uses a rather conventional Makefile system. A GNU autoconf/automake system used to be included, but was discarded in Mesa 5.1 because:

- It seldom worked on IRIX, Solaris, AIX, etc.
- It was very compilicated
- Nobody maintained it
- libtool was just too weird

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.

### 1.1 Compilation

Note: if you've obtained Mesa through CVS, do this first:

        cd Mesa-newtree
        cp Makefile.X11 Makefile
        chmod a+x bin/mklib

Now, just type make. You'll see a list of supported system configurations. Choose one from the list (such as linux-x86), and type:

        make linux-x86

That's it.

### 1.2 The libraries

When compilation has finished, look in the top-level lib/ directory. You'll see a set of library files similar to this:

    lrwxrwxrwx    1 brian    users          10 Sep  4 17:55 libGL.so -> libGL.so.1*
    lrwxrwxrwx    1 brian    users          19 Sep  4 17:55 libGL.so.1 -> libGL.so.1.4.050100*
    -rwxr-xr-x    1 brian    users    13940317 Sep  4 17:55 libGL.so.1.4.050100*
    lrwxrwxrwx    1 brian    users          11 Sep  4 17:54 libGLU.so -> libGLU.so.1*
    lrwxrwxrwx    1 brian    users          20 Sep  4 17:54 libGLU.so.1 -> libGLU.so.1.3.050100*
    -rwxr-xr-x    1 brian    users      324746 Sep  3 13:54 libGLU.so.1.1*
    -rwxr-xr-x    1 brian    users     2830539 Sep  4 17:54 libGLU.so.1.3.050100*
    lrwxrwxrwx    1 brian    users          12 Sep  4 17:53 libglut.so -> libglut.so.3*
    lrwxrwxrwx    1 brian    users          16 Sep  4 17:53 libglut.so.3 -> libglut.so.3.7.1*
    -rwxr-xr-x    1 brian    users     2426683 Sep  4 17:53 libglut.so.3.7.1*

libGL is the main OpenGL library (i.e. Mesa).
libGLU is the OpenGL Utility library.
libglut is the GLUT library.

### 1.3 Running the demos

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

Before running a demo, you may have to set an environment variable (such as LD_LIBRARY_PATH on Linux) to indicate where the libraries are located. For example:

> cd into the Mesa lib/ directory.
> setenv LD_LIBRARY_PATH ${cwd} (if using csh or tcsh shell)
> or,
> export LD_LIBRARY_PATH=${PWD} (if using bash or sh shell)

Next, change to the Mesa/demos/ directory:

> cd ../progs/demos

Run a demo such as gears:

> ./gears

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

If you're using Linux or a similar OS, verify that the demo program is being linked with the proper library files:

> ldd gears

You should see something like this:

            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)

Retrace your steps if this doesn't look right.

### 1.4 Installing the header and library files

The standard location for the OpenGL header files on Unix-type systems is in `/usr/include/GL/`. The standard location for the libraries is `/usr/lib/`. For more information see, the Linux/OpenGL ABI specification.

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 `/usr/local/include/GL/` and `/usr/local/lib/`.

To install the Mesa headers, do this:

> cp -r include/GL /usr/include

To install the Mesa libraries, do this:

> cp -pd lib/* /usr/lib
> (The -pd options preserve symbolic links)

If you install the libraries in a non-standard location you can use 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.

## 2. Windows Compilation and Installation

Please see the README.WIN32 file.

## 3. VMS Compilation and Installation

Please see the README.VMS file.

## 4. Other systems

Documentation for other environments (some may be very out of date):

- README.GGI - GGI
- README.3DFX - 3Dfx/Glide driver
- README.AMIWIN - Amiga Amiwin
- README.BEOS - BeOS
- README.D3D - Direct3D driver
- README.DJ - DJGPP
- README.LYNXOS - LynxOS
- README.MINGW32 - Mingw32
- README.NeXT - NeXT
- README.OpenStep - OpenStep
- README.OS2 - OS/2
- README.WINDML - WindML