070612 - Qt 4.3.0

[easuter]

The latest release of Qt from Trolltech is available for download from the testing repository, along with full source code:

Source: http://vectorlinux.osuosl.org/veclinux-5.8/source/testing/libs/qt4
Package: http://vectorlinux.osuosl.org/veclinux-5.8/testing/libs/qt4-4.3.0-i586-4vl58.tlz

Code:

qt4: QT graphical toolkit, version 4.3.0
qt4:
qt4: Qt is a comprehensive development framework that includes
qt4: an extensive array of features, capabilities and tools
qt4: that enable development of high-performance, cross-platform
qt4: rich-client and server-side applications.
qt4:
qt4: Website: http://trolltech.com/products/qt
qt4: License GNU General Public License, version 2
qt4: (only for use with open source aplications, commercial
qt4: applications need payed licenses).

*General package info:

 - The package's base-name is qt4, not qt. This will prevent Qt3 from being removed during a dist-upgrade for example and will allow you to have both Qt versions installed and working side-by-side.

 - The installation prefix is /usr/lib/qt-4.3.0, with a symlink pointing to /usr/lib/qt4.

 - Symlinks in /usr/bin for Qt4's qmake, qtconfig, linguist, designer, lrelease and lupdate, respectively: qmake4, qt4config, linguist4, designer4, lrelease4, lupdate4.

 - To configure Qt4's appearance run qt4config

 - Menu entries made for Qt4's Linguist, Assistant and Designer.

 - SQL drivers built (as plugins): Sqlite3, MySQL and PostgreSQL drivers.


*Building apps against Qt4:

 - The $QTDIR environment variable in VL 5.8 is set by default to use Qt3 (in other words, /usr/lib/qt). If the source you need to compile has a configure script, then run it like this in order to override the QTDIR variable:

Code:

QTDIR="/usr/lib/qt4" ./configure --prefix=/usr
make

However, most Qt-based apps' configure scripts will have an option to set the Qt prefix using a flag. The flag may vary, but it is usually one of these:

Code:

--qtdir=/usr/lib/qt4
--qt-dir=/usr/lib/qt4
--with-qt=/usr/lib/qt4
--with-qt-dir=/usr/lib/qt4
--with-qt-prefix=/usr/lib/qt4

You can run ./configure --help to check for the correct Qt flag for that particular app.
If you use the flag, then you won't need the environment variable override when you configure the source:

Code:

./configure --prefix=/usr --qtdir=/usr/lib/qt4

 - If the Qt4 sources that need to be compiled use only qmake to create a Makefile, then you will have to use qmake4, since the qmake binary is for Qt3.

Code:

qmake4
make

 - If you get a segmentation fault error while compiling a Qt4 app, then you will most likely need to make GCC use libiconv:

Code:

LDFLAGS="-liconv" QTDIR="/usr/lib/qt4" ./configure --prefix=/usr

or

Code:

LDFLAGS="-liconv"  ./configure --prefix=/usr --qtdir=/usr/lib/qt4

That should solve the segmentation faults.

Post any problems with that package in this thread. 

[blurymind]

could you upload cdfly too?

[easuter]

could you upload cdfly too?

Yeah, I guess.

[jovanoti]

Well, I suceeded to compile Qt4 on my own  . I don't know whether this package creates a link to qtconfig, but if not this will be useful.

Code:

su
ln -s /usr/lib/qt4/bin/qtconfig /usr/bin/qt4config
su username
qt4config

http://img356.imageshack.us/my.php?image=snapshot2ul1.jpg

[easuter]

Yes, indeed, I'm thinking of doing something like that for Qt4's qmake as well (maybe a symlink called qmake4).
I can put that into a revised package. 

[easuter]

jovanoti, I have added the qt4config symlink to the package, and also a qmake4 symlink. The initial post was changed to reflect that.

Thanks for the suggestion! 

[rossofiorentino]

Hello to everybody!
I cant install KDE cause package
arts and Kdelibs, when i launch configure, say me:
....
checking for Qt... configure: error: Qt (>= Qt 3.3 and < 4.0) (headers and libraries) not found. Please check your installation!
For more details about this problem, look at the end of config.log.

I looked at end of config.log, but i don'7 understand a lot....
May someone help me?

[easuter]

Are you trying to compile compile KDE from source?
If yes, you don't have to because KDE can be downloaded from the VL repository.

[rossofiorentino]

Yes, i'd  like to compile it, i try to optimize it with "-O3 -march=i686 mtune=i686 -mcpu=pentium3".
But i try for educational also......
If i compile Kde with the old qt library 3.3.0 I haven't any problem,
but if i install qt4 i have that error. My problem is not with Kde, is with qt....

[easuter]

Which version of KDE are you trying to compile?

This Qt4 package should not interfere with the Qt3 package provided with VectorLinux 5.8
By the way, which version of Vector are you using?

[rossofiorentino]

I'm using the last VL 5.8 standard gold
and Kde is the last stable 3.5.7.....

[easuter]

I'll give it a try here later on to see if I get the same problem when Qt4 is installed.

[The Headacher]

i try to optimize it with "-O3 -march=i686 mtune=i686 -mcpu=pentium3"

mcpu is deprecated,  instead try

Code:

-O3 -march=i686 -mtune=pentium3

How much speed you gain with -O3 is usure too. Some people are of the opinion that you should just use -Os (optimize for size) for everything but math libraries. I think -O2 is a nice middle road, as it will be optimized for speed and size.
I'm not saying you should use -O2, just thought I'd mention it .

[rossofiorentino]

Thanks for suggestion for compiling!
It is jaus for educational....
But problem with qt4 still stay.......

[easuter]

I have a new Qt4 package that I'll upload this evening, and will hopefully fix that problem and any SQL problems too.