Installing Qt4

[grimx]

Using Mandriva 07

 

I have Qt3 already installed, and i just downloaded Qt4.3 from Trolltech.com.

I alread unpacked the .gz file.

Now do i just install it even though Qt3 is already there

or do i uninstall Qt3 before hand????

 

 

[moved from Software by spinynorman]

[neddie]

It's much easier to install using urpmi, is there a reason you particularly need that gz version?

 

I'm pretty sure both sets of development tools will sit happily side-by-side, but if it was me I'd uninstall the qt3-devel stuff just to be sure of what's going on. Don't try and uninstall qt3 though, because lots of apps rely on it ;)

[scarecrow]

Yeah, why not "urpmi qt4-common"

You may need some other qt4 packages for your needs.

Sometimes you may have to compile from source, but this is unlikely for things like gtk and qt: they are included in every distro out there right out of the box.

[tyme]

if you're using a KDE version prior to 4 you need QT3, I believe. KDE3.x and below will not run on QT4.

[scarecrow]

if you're using a KDE version prior to 4 you need QT3, c believe. KDE3.x and below will not run on QT4.

 

he already has QT3 installed if he's running KDE3.x - so my guess is he wants to install QT4.

QT4 can coexist with QT3 perfectly well... you just have to switch environment profiles whenever you want to compile something using a specific QT version.

[Greg2]

We need to know what version 'exactly', you d/l from Trolltech? What do you want to do with it? In any case, you (as has already been noted) can have both versions (libs & devel) sit happily side-by-side. :) I have three versions on my dev box, with KDE.

 

So what version (Commercial, Open Source), what for (desktop, embedded, phone)?

[grimx]

On Mandriva 07

KDE 3.5

i have installed

Qt3.3.6 (devel, common, libqt3) -18mdv2007.0

 

I downloaded

qt-X11-opensource-src-4.3.3.tar.gz

 

using just for gui programming

 

i ran .cofigure and then make and then ( su -c "make install") and so on, to build and install it.

but qtdemo exe does not work

and it wont compile Qt4 apps but it will compile Qt3 apps.

and Qt4 does not show up in MCC installed programs section.

 

Help

Edited January 28, 2008 by grimx

[grimx]

my env var QTDIR = /usr/lib/qt3

my PATH includes the Qt4 path

[Guest fredstah]

my env var QTDIR = /usr/lib/qt3

my PATH includes the Qt4 path

For Qt4 apps, your QTDIR should be set to your Qt4 install path.

[grimx]

meaning /usr/lib/qt4

[grimx]

do i leave the Qt3 entries that are in the PATH var

the qt3 entries come after the qt4 entries

[Greg2]

Unless you did ./configure with the -prefix-install option, you have probably installed in /usr/local/Trolltech/Qt-4.3.3/. If that is the case, you will have to set your environment $PATH accordingly.

 

You have qt4.1.4 available in your 2007 repos. Do you need qt4.3.3? I'm just curios.

[grimx]

my PATH includes the qt3 entries plus ( /usr/local/Trolltech/Qt-4.3.3/)

i do have that qt4.1 repo

[grimx]

the reason y i downloaded qt4 .tar.gz is because my DSL line is down

so i had to use my friends Window box to download it

[grimx]

so as long as my PATH and QTDIR are set to Qt4 values

it should work then??

 

well if does'nt

i'll be back tomarrow