Qt (>= Qt 3.0) not found

[Florian Sievert]

Hi,

i noticed meanwhile several times that I am not able to compile one or another software
using qt. I always getting the same error:

checking for Qt... configure: error: Qt (>= Qt 3.0) (library qt-mt) not found. Please
check your installation!
For more details about this problem, look at the end of config.log.
Make sure that you have compiled Qt with thread support!

This time during the try to compile superkaramba. I searched around a while (also this
list) and noticed that 
someone points out the file /etc/profile.d/qt.sh and that the qt dir may be set wrong. 

However after starting the script an "echo $QTDIR" gives back an
/usr/lib/qt-3.1. For me this doesn look fine. I also noticed an tip to give the qt-dir as
param for configure:
./configure --with-qt-dir=/usr/lib/qt-3.1. With the same effect, the qt-lib isn't
found again. I am currently running out of good ideas? What could went wrong? I also
doesn't found any really usefull hint in the config.log, but I found it strange that
there wasn't anything behind the lines with qt-libaries and qt-includes.


Sorry, if i couldn't see the problem, but I don't really understand why he is not
finding the qt-lib, that is physically is installed and the important sys-var $QTDIR also
seems to have the right directory.

Thanks :)
Florian

[Michael Schwendt]

On Wed, 21 Jan 2004 21:50:46 +0100, Florian Sievert wrote:

>  i noticed meanwhile several times that I am not able to compile one
> or another software using qt. I always getting the same error:
>  
>  checking for Qt... configure: error: Qt (>= Qt 3.0) (library qt-mt) not found. Please
> check your installation!
>  For more details about this problem, look at the end of config.log.
>  Make sure that you have compiled Qt with thread support!
>  
>  This time during the try to compile superkaramba. I searched around a while (also this
> list) and noticed that 
>  someone points out the file /etc/profile.d/qt.sh and that the qt dir may be set wrong. 
>  
>  However after starting the script an "echo $QTDIR" gives back an
> /usr/lib/qt-3.1. For me this doesn look fine. I also noticed an tip to give the qt-dir as
> param for configure:
>  ./configure --with-qt-dir=/usr/lib/qt-3.1. With the same effect, the qt-lib isn't
> found again. I am currently running out of good ideas? What could went wrong? I also
> doesn't found any really usefull hint in the config.log,
>  
The reason for the failure should be in config.log, as diagnostic output
on compiling and linking a test program is stored there. One common reason
is that the test code checks for a wrong Qt version constant. The
QT_VERSION constant changed with Qt 3.0.5 and can result in Qt >= 3.0.5 to
be detected as Qt < 3.0. Another reason could be missing dependencies.

--

[Florian Sievert]

Michael Schwendt schrieb:

> The reason for the failure should be in config.log, as diagnostic
> output
> on compiling and linking a test program is stored there. One common reason
> is that the test code checks for a wrong Qt version constant. The
> QT_VERSION constant changed with Qt 3.0.5 and can result in Qt >= 3.0.5 to
> be detected as Qt < 3.0. Another reason could be missing dependencies.
>   
>  
Yes, you are right! The solution for this problem was in the coonfig.log 
(of course) ;) I am new to this, so it take some philosophic thoughts to 
get a solution. I noticed that the missing lib give back errors, because 
several OpenGL-Funtions are linked, but cannot be found. I have 
installed the Nvidia drivers and deinstall the Mesa-Lib, because of a 
conflict it caused. However I thought the missing Mesa could be the real 
problem (not qt itself). However I just solved the problem with three steps:

1. editing /etc/ld.conf.so and append the line /usr/lib/nvidia
2. creating in /usr/lib/nvidia a link on "libGL.so.1.0.4496" named 
"libGL.so.1"
3. recalling ldconf

Know ./configure is detecting QT and everything is running fine. I never 
thought that my nv drivers could be the problem of this. However thanks 
to everyone for listing ;)

Sincerly,
Florian

[Douglas Furlong]

On Wed, 2004-01-21 at 20:50, Florian Sievert wrote:
>  Hi,
>  
>  i noticed meanwhile several times that I am not able to compile one or another software
> using qt. I always getting the same error:
>  
>  checking for Qt... configure: error: Qt (>= Qt 3.0) (library qt-mt) not found. Please
> check your installation!
>  For more details about this problem, look at the end of config.log.
>  Make sure that you have compiled Qt with thread support!
>  
>  This time during the try to compile superkaramba. I searched around a while (also this
> list) and noticed that 
>  someone points out the file /etc/profile.d/qt.sh and that the qt dir may be set wrong. 
>  
>  However after starting the script an "echo $QTDIR" gives back an
> /usr/lib/qt-3.1. For me this doesn look fine. I also noticed an tip to give the qt-dir as
> param for configure:
>  ./configure --with-qt-dir=/usr/lib/qt-3.1. With the same effect, the qt-lib isn't
> found again. I am currently running out of good ideas? What could went wrong? I also
> doesn't found any really usefull hint in the config.log, but I found it strange that
> there wasn't anything behind the lines with qt-libaries and qt-includes. 
In the past this has always worked for me.

You have not actually stated what qt RPM's you have installed on your
system (this always gets me!).

rpm -qa | grep qt, and you should see, qt-devel-xxxx

Does that help?

Doug

[Florian Sievert]

Hi

> You have not actually stated what qt RPM's you have installed on
> your
> system (this always gets me!).
>
> rpm -qa | grep qt, and you should see, qt-devel-xxxx
>   
>  
I am sorry, I really thought, that it would be 3.1, when it is installed 
in this directory at /usr/lib. However I get this as output:
qt-devel-3.1.2-14

Sincerly,
Florian

[Douglas Furlong]

On Thu, 2004-01-22 at 17:52, Florian Sievert wrote:
>  Hi
>  
>  >You have not actually stated what qt RPM's you have installed on your
>  >system (this always gets me!).
>  >
>  >rpm -qa | grep qt, and you should see, qt-devel-xxxx
>  >  
>  >
>  I am sorry, I really thought, that it would be 3.1, when it is installed 
>  in this directory at /usr/lib. However I get this as output:
>  qt-devel-3.1.2-14 
Sorry for the really long delay, are you still trying to fix
this
problem?

Doug