glibc-2.3.4-21: ld.so does not find glibc.so.6 for certain binaries

[Ville Herva]

On Wed, Apr 13, 2005 at 02:59:10AM -0400, you [Jakub Jelinek] wrote:
> On Wed, Apr 13, 2005 at 08:54:19AM +0300, Ville Herva wrote:
> > Is anyone else seeing this, or is this something specific to my
> > installation:
> > 
> > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=154229
> > 
> > Since upgrading to glibc-2.3.4-21, I've been seeing the following problem:
> > glibc.so.6 is not found when launching certain binaries (see below).
> >                                                                                 
> > Reverting back to glibc-2.3.4-18 fixes it (I just verified.)                    
> >                                                                                 
> > A binary called des (that I compiled on 1999) always shows this, but saw it
> > with at least grep once. That problem went away by itself, but older
> > binaries like des still show it.
> 
> See %changelog:
> - move LinuxThreads libraries to /%{_lib}/obsolete/linuxthreads/
>   and NPTL libraries to /%{_lib}.  To run a program against LinuxThreads,
>   LD_ASSUME_KERNEL=2.4.xx LD_LIBRARY_PATH=/%{_lib}/obsolete/linuxthreads/
>   is now needed

Thanks. LD_LIBRARY_PATH=/lib/obsolete/linuxthreads works.

I added this information to the bugzilla entry.

> The move was necessary because of the change to make NPTL the default
> library programs are linked against and are using its headers.
> 
> glibc 2.0 compiled programs are implicitly using LD_ASSUME_KERNEL=2.2.5.
> I'll probably change the hack to also add implicitly
> /%{_lib}/obsolete/linuxthreads/ to library search path, but be aware that
> when linuxthreads is finally dumped into the trash bin, which will happen
> in ~ a year or less, glibc 2.0 programs will finally stop working.
> 
> BTW, it must have been early 1999, RHL 6.0 already shipped with glibc 2.1.x.

I have at least two binaries that show this (possible quite a bit more I
haven't been searching for them), and another of them is compiled on Sep 22
2002 on then-current Red Hat system. (The 7912-byte binary is available at
http://iki.fi/v/tmp/xsel). I'm *quite* sure it wasn't linked against glibc
2.0. Strange.



-- v -- 

v at iki.fi