3.  Building



    To configure the Qt library for your machine type, run the

    ./configure script in the package directory.



    By default, Qt is configured for installation in the

    /usr/local/Trolltech/Qt-4.2.2 directory, but this can be

    changed by using the -prefix option. Alternatively, the

    -prefix-install option can be used to specify a "local"

    installation within the source directory.



        cd /tmp/qt-x11-opensource-src-4.2.2

        ./configure



    Type "./configure -help" to get a list of all available options.



    To create the library and compile all the demos, examples, tools,

    and tutorials, type:



        make



    If you did not configure Qt using the -prefix-install option,

    you need to install the library, demos, examples, tools, and

    tutorials in the appropriate place. To do this, type:



        su -c "make install"



    and enter the root password.



    Note that on some systems the make utility is named differently,

    e.g. gmake. The configure script tells you which make utility to

    use.



    If you need to reconfigure and rebuild Qt from the same location,

    ensure that all traces of the previous configuration are removed

    by entering the build directory and typing



        make confclean



    before running the configure script again.



4.  Environment variables



    In order to use Qt, some environment variables needs to be

    extended.



        PATH               - to locate qmake, moc and other Qt tools



    This is done like this:



    In .profile (if your shell is bash, ksh, zsh or sh), add the

    following lines:



        PATH=/usr/local/Trolltech/Qt-4.2.2/bin:$PATH

        export PATH



    In .login (in case your shell is csh or tcsh), add the following line:



        setenv PATH /usr/local/Trolltech/Qt-4.2.2/bin:$PATH



    If you use a different shell, please modify your environment

    variables accordingly.



    For compilers that do not support rpath you must also extended the

    LD_LIBRARY_PATH environment variable to include

    /usr/local/Trolltech/Qt-4.2.2/lib. On Linux with GCC this step

    is not needed.



5.  That's all. Qt is now installed.