Redhat 6.1 kdevelop crashes

[Jim W. Bennett]

Robert.M.Wheat at storage.network.com, "Jr." wrote:
> 
> On Mon, 22 Nov 1999, you wrote:
> 
> > 5. To clearify, when I click 'DOC' and then click 'Qt Library'  kdevelop just
> >    simply goes away. This is what I called "crashed". Maybe the wrong terminology.
> 
> This sounds like the ongoing 'libjpeg' problem.  KDevelop crashes because it is finding the wrong
> libjpeg library.  To verify this, run KDevelop from the command line of a console.  When KDevelop
> "goes away", it should leave a message behind in the console.
> 
> If this is really what the problem is, then the following should help you solve the problem
> (snipped from an earlier e-mail dated Oct 16).
> 
> The KDE libraries want to link with libjpeg 61.  In KDevelop, when looking at the QT docs, it is a
> KDE function doing the jpeg loading.  The QT libs (1.44) want to link with libjpeg 62.  I have set
> my symbolic links named 'libjpeg.so', and 'libjpeg.so.6' to point to libjpeg.so.6.0.1.  These, of
> course, are the libs in the kde/lib directory.  I've created a new symbolic link which I named
> 'libjpeg62.so' and set to point at 'libjpeg.so.62.0.0'.  Now, when a KDE app is compiled and
> linked, if it requires libjpeg (at run time) it will use the 61 version (-ljpeg on the compiler
> command line will link the app with 'libjpeg.so').  When I compile a QT app that needs jpeg
> support, I explicitly link to 'libjpeg62' (-ljpeg62 on the compiler command line), which it also
> will find at run time.  All of this can be done without re-compiling anything, that is if the apps
> in question were compiled and linked for shared (dynamically loaded) libraries.
> 
> Bottom line, the two versions of libjpeg are incompatable and _must_ be kept separate.
> 
> Hope this helps!
> 
> --
> Robert M. Wheat, Jr.
> belran at worldnet.ibm.net


I wish to thank everyone that helped on fixing my problem. Would
especially like to thank Robert M.Wheat,Jr and Anthony Tekatch for thier
special help. Anthony probably doesn't know he helped but Robert listed
the mailing date of an email that he had received his information from.
So I went to  the mailing list on the Kdevelop Web and found Anthony's
message. Between the two message my problem came to light. Thanks to
everyone who tried to help. Every attempt was helpful, if for nothing
else they help to show what wasn't the problem. 

My poblem was simply that my libjpeg.so.62.0.0 was a '0' size file. I
did an 'rpm -Uhiv --force' to all libjpeg files (three in all) on my
Redhat 6.1 cdrom. That was all that was needed to fix the crash
condition.

There's one step that helps identify library problems.
while in root or SU type 'ldd /usr/bin/kdevelp', which will give you a
list of the lib files it uses. The entries look like the following:

libjpeg.so.6 => /usr/lib/libjpeg.so.6 90x40381000)

There is just one entry off many entries. There is only one libjpeg file
listed. By the way, the entry above was my problem. What it should have
looked like and does now:

libjpeg.so.62 => /usr/lib/libjpeg.so.62 90x40381000)

Thanks to All;

Jim