Install qt4 alongside qt3 ?

Jessica Hall jes.hall at
Mon Jul 18 10:25:34 BST 2005

On Sat, 16 Jul 2005 09:57, Mikhail Ramendik wrote:
> Hello,
> I'd like to compile and install qt 4. I need it for some new open source
> project I'm participating in.
> But I don't want it to interfere with the existing qt 3. (Moreover, I want
> to be able to update qt 3.x from RPM without affecting qt 4).
> How do I do this?

Remember to read very carefully the Qt readme before starting.  Install your 
Qt4 to a different directory to your system Qt, for 
example /usr/local/lib/qt4. Then when you are wanting to build or run 
programs against that new qt, set the variable $QTDIR to the location of your 
new Qt, and add $QTDIR/bin to the $PATH. You may also need to set 
$LD_LIBRARY_PATH to $QTDIR/lib or add it to /etc/ If you are 
wanting to run or build applications against the old Qt, use your old 
settings for these variables.


KDE Frequently Asked Questions:

panic("esp_handle: current_SC == penguin within interrupt!");
This message is from the kde mailing list.
Account management:
More info:

More information about the kde mailing list