[kde-linux] JPEG 7 vs KDE-4.4 (DLL HELL comes to Linux?)

[James Tyrer]

Kevin Krammer wrote:
> On Wednesday, 2010-03-10, James Tyrer wrote:
>> I have an interesting issue which appears to be an obscure bug or a
>> build system issue.  I updated Firefox and needed to upgrade a bunch of
>> stuff first.
>>
>> I installed: "jpeg-7", but I did not remove version 6.2 pending
>> rebuilding other packages.  I did rebuild KDESupport and the KDE-4.4
>> BRANCH tree.
>>
>> When I open Konqueror, it opens fine but when I open a web page (e.g.
>> www.kde.org) it crashes without the KDE crash dialog appearing.
>>
>> So, I opened it in a Konsole.  I get this error message:
>>
>> konqueror(32716)/kio (Slave) KIO::Slave::createSlave: createSlave "http"
>> for KUrl("http://www.kde.org/images/teaser/js-jam.jpg")
>> konqueror(32716)/kio (KIOConnection)
>> KIO::ConnectionServer::listenForRemote: Listening on
>> "local:/tmp/jrt-kde4/ksocket-jrt/konquerorE32716.slave-socket"
>> Wrong JPEG library version: library is 70, caller expects 62
> 
> Would be interesting where this output comes from.

Yes it would.  What I can't understand is that if something is linked 
against the older JPEG library, why doesn't it just use it.

> Can you check if both JPEG libraries have different so-names and whether you 
> have a .so symlink pointing to either one?

[root at localhost lib]# ls -l libjpeg.*
-rw-r--r-- 1 root root 247278 Mar  8 11:21 libjpeg.a
-rwxr-xr-x 1 root root    913 Mar  8 11:21 libjpeg.la
lrwxrwxrwx 1 root root     16 Mar  8 11:21 libjpeg.so -> libjpeg.so.7.0.0
lrwxrwxrwx 1 root root     17 Aug  3  2009 libjpeg.so.62 -> 
libjpeg.so.62.0.0
-rwxr-xr-x 1 root root 140777 Aug  3  2009 libjpeg.so.62.0.0
lrwxrwxrwx 1 root root     16 Mar  8 11:21 libjpeg.so.7 -> libjpeg.so.7.0.0
-rwxr-xr-x 1 root root 229176 Mar  8 11:21 libjpeg.so.7.0.0

Looks correct to me.

-- 
James Tyrer

Linux (mostly) From Scratch