[mythtv-users] mythtv 0.19 -lqt-mt error linking problem

[Douglas Eckhart]

Sam,
Thanks for your help.  You were right about my libraries being broken.  
I was missing the:
lrwxrwxrwx   1 root root      17 Apr 21 22:38 libqt-mt.so 
->libqt-mt.so.3.3.4
link. So, of course it couldn't find it.  I guess the qt3 setup is bad 
in the Ubuntu 6.06 release.  I put in the link and now I'm on to my next 
missing library, "cannot find -lXext" .   I guess there's a package 
missing but it might just be that things are not setup right.
Thanks again,
-- Doug


Sam Varshavchik wrote:

> Douglas Eckhart writes:
>
>> Hi All,
>> I'm hoping someone can tell me what the trick is to build mythtv on 
>> ubuntu dapper, (yes, the recent release).  I apt-get qt3-dev-tools, 
>> set QTDIR=/usr/share/qt3, make sure that /usr/share/qt3/bin is in the 
>> $PATH, (so I can run qmake?) following the instructions posted on the 
>> mythtv webvsite:  unpack mythtv-0.19.tar.bz2, cd into mythtv-0.19/,  
>> run ./configure, qmake mythtv.pro, make, the  compile goes along 
>> without any warnings even, I think, finally it starts to link the 
>> first .so and I get an error and the message "cannot find -lqt-mt" .  
>> However, I can and I have done plenty to point at it 
>> (libqt-mt.so.3.3.4, which is actually 
>
>
> That's not what it's looking for.  The linker is looking for libqt-mt.so.
>
> Either your system has corrupted or missing files, or Ubuntu is 
> broken.  The same package that contains QT header files should also 
> install a symbolic link from libqt-mt.so to the versioned shared library.
>
> On Fedora, for example, /usr/lib/qt-3.3/lib contains:
>
> lrwxrwxrwx   1 root root      17 Apr 21 22:38 libqt-mt.so 
> ->libqt-mt.so.3.3.4
> lrwxrwxrwx   1 root root      17 Apr 21 22:04 libqt-mt.so.3 -> 
> libqt-mt.so.3.3.4
> lrwxrwxrwx   1 root root      17 Apr 21 22:04 libqt-mt.so.3.3 -> 
> libqt-mt.so.3.3.4
> -rwxr-xr-x   1 root root 8681592 Apr 20 05:18 libqt-mt.so.3.3.4
>
> libqt-mt.so.3.3.4 is installed by the base QT package:
>
> $ rpm -q -f libqt-mt.so.3.3.4
> qt-3.3.4-15.5
>
> The libqt-mt.so link is not installed by the base QT package.  It gets 
> installed by the qt-devel package, which contains the symlink explicitly.
>
> $ rpm -q -f libqt-mt.so
> qt-devel-3.3.4-15.5
>
> That's how it's done on Fedora; Ubuntu should work the same way.
>
> You can, of course, create the symlink by hand.  But, it's not really 
> going to fix whatever's broken on your box.  If you were, as you say, 
> able to get things compiled, but the link failed, that tells me that 
> your QT header files are installed, but the .so symlink is missing.  
> Either Ubuntu's qt-devel package is broken, or you have a bunch of 
> random files deleted in /usr/lib.
>
>
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