Not the fix:

[root@jb344 yum.repos.d]# yum install qt3-devel
Configuration file /etc/yum/pluginconf.d/fastestmirror.conf not found
Unable to find configuration file for plugin fastestmirror
Loaded plugins: changelog, downloadonly, kabi, protect-packages, 
refresh-packagekit, security
Loading support for Red Hat kernel ABI
Setting up Install Process
Package qt3-devel-3.3.8b-29.el6.x86_64 already installed and latest version
Nothing to do

On 06/27/2011 12:28 PM, Chris Tooley wrote:
> On 11-06-27 12:10 PM, Yasha Karant wrote:
>> Does anyone have a working copy and/or RPM of LabPlot for RHEL 6 (SL 6)
>> x86-64?
>>
>> URL: http://labplot.sourceforge.net/
>>
>> In the past, I have built this application from source. With SL 6, I
>> get the following message from configure:
>>
>> checking for KDE... configure: error:
>> in the prefix, you've chosen, are no KDE headers installed. This will
>> fail.
>> So, check this please and use another prefix!
>>
>> despite having loaded all the SL KDE development packages, having
>> /usr/lib64/kde4 and /usr/include/kde4 present.
>>
>> Any assistance would be appreciated.
>>
>> Yasha Karant
>
> Try installing kde3 development files, it looks like that program was
> last edited in 2008, and may not understand kde4. I'm not a kde
> programmer so I don't know if kde4 is backwards compatible with kde3 or
> not.
>
> In SL6, that would be "yum install qt3-devel" (afaik)
>
> Hope that works for you!
> -Chris