I'm using the very old os(RedHat9), because for some reason I cannot use other newer operaton system.
Here is my problem.
The default version of Qt on RedHat9 is 3.1. But I want to install the Qwt http://qwt.sourceforge.net/which is a library based of Qt to do my job. And the Qwt 5.0.x needs Qt>=3.3, so I want to install a Qt 3.3.5 on my machine.
I downloaded the "qt-x11-free-3.3.5.tar".
I know that I needn't firstly uninstall the default Qt3.1. The only thing that I should do is install the new Qt 3.3.5 followed by the install instruction within the source package.
But I'm not very clear about the environment varible settings. How to set these env varible correctly to make sure that I can use the newly installed Qt 3.3.5 instead of the default Qt3.1?
Could anybody write something about the env varible settings process.
Thanks a lot.
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