other/8888: Linking shared libraries with -pthread fails to link to libpthread

[wilhelmi@ira.uka.de]

>Number:         8888
>Category:       other
>Synopsis:       Linking shared libraries with -pthread fails to link to libpthread
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 10 04:16:03 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Sebastian Wilhelmi
>Release:        CVS
>Organization:
>Environment:
Linux
>Description:
Linking a shared library with -pthread does not link in libpthread.so on linux. 

Quoting from the corresponding GLib bug report about the reasons, that libpthread.so has to be on the linking line also for shared libs:

 - prelink; in order for prelink to preresolve relocations
   for a library must not have undefined symbols; any 
   undefined symbols will always have to handled at run 
   time.

 - Symbol versioning; the binding of symbols to particular 
   versions happens when the library is linked. If -lpthread
   not on the link line, then the symbol will get the base 
   version at run time, not the correct newer one. 

Please see 

    http://bugzilla.gnome.org/show_bug.cgi?id=100697

for further information.
>How-To-Repeat:

>Fix:
See attached patch. Other platforms surely need similiar fixes as well.
>Release-Note:
>Audit-Trail:
>Unformatted:
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