Install Qt

Nvidia OpenGL Configuration mini-HOWTO
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# 3.5. Install Qt

            # for Qt, there is no "make install", just place the source
            # where you want it to live:
    	cd /usr/local
    	tar -xvzf qt-x11-2.2.4.tar.gz
    	ln -s qt-2.2.4 qt
    	cd qt

Read the `INSTALL` file about environment variables to setup before you try to build Qt. You can add the following to `/etc/profile`:

                    QTDIR=/usr/local/qt
                    PATH=$PATH:$QTDIR/bin
                    MANPATH=$MANPATH:$QTDIR/man
                    LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$QTDIR/lib
                    export QTDIR PATH MANPATH LD_LIBRARY_PATH

`LD_LIBRARY_PATH` is optional if you include an entry in `/etc/ld.so.conf` for the library path: `/usr/local/qt/lib`, then run ldconfig to update `/etc/ld.so.cache`.

            # note: configure has some options you can try, to see them
            # see ./configure --help
    	./configure

            # NOTE: when you run make as suggested on the next line, you may
            # encounter a make error that halts the build IF you run make
            # from outside X.  The program $QTDIR/bin/uic (the User Interface Compiler)
            # may Segmentation Fault when run from a Linux console.  You can run
            # "startx" and use the twm (tiny window manager) and xterm (or whatever you
            # might have setup for X) to run the rest of the Qt build.  If for some
            # reason twm is not even available, then you can run "XFree86 &", use
            # "CTRL-ALT-F1" to get to a console, start an xterm as
            #  "xterm -display localhost:0.0 &", then switch back to X with "ALT-F7".

    	make

        # Only for old versions of Qt before 2.1.0 or so ...
    	# compile the opengl extension
    	# Note that in qt 2.2.0 on, the OpenGL support has been moved out of extensions
    	# and is now a standard part of the library that is installed if configure
    	# finds OpenGL installed on your system.  If you were to not want OpenGL
    	# support in Qt, you'd have to pass the -no-opengl option to configure.
    	cd extensions/opengl/src
    	# Check the Makefile and ensure there are not Mesa references.
    	make

    	ldconfig
            cd ../examples
            # Try compiling and running the examples.

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