[syslog-ng] [Bug 188] Syslog-ng 3.3.5.90-20120810 problems: undefined symbol and ld. so library path

[bugzilla at bugzilla.balabit.com]

https://bugzilla.balabit.com/show_bug.cgi?id=188





--- Comment #3 from Jose Oliveira <jpo at di.uminho.pt>  2012-08-19 16:47:45 ---
(In reply to comment #2)
> (In reply to comment #0)
> > we have encountered a couple of problems when running syslog-ng-3.3.5.90-20120810 under Fedora 17 x86_64:
> > 
> >  1) ld.so library path
> >  2) undefined symbol: tls_context_setup_session
> 
> The second is due to afsocket-notls being compiled with ENABLE_SSL set by mistake. I saw that before, but forgot about it unfortunately. If you're shipping
> both afsocket and afsocket-notls in the same package, the easy fix is to not ship the latter, only one of these will be used anyway (even if I fix the
> compiling bug).
> 
> As for the library path, that's a tougher one: libsyslog-ng-crypto is not really a module, but a private shared library. The libafsocket-tls.so should have an
> RPATH set to /usr/lib64/syslog-ng, that way the ld.so.conf.d/ workaround wouldn't be needed. I'm not sure whether Fedora allows RPATH, on Debian, the plugins
> that link to libsyslog-ng-crypto have an RPATH set, and work fine without modifying the ld.so path.
> 
> In any case, I'd rather postpone fixing these after 3.3.6, as both problem can be worked around in a reasonable way. I'll definitely fix the undefined symbol
> problem in 3.3.7, but the ld.so path is a tougher beast: to fix that properly, libsyslog-ng-crypto.so must either be installed into /usr/lib64, merged into
> libsyslog-ng.so, or RPATH must be set on the modules (this is already done, but perhaps Fedora strips it?). The best would be an option at configure time that
> links the contents of libsyslog-ng-crypto into libsyslog-ng - for most distributions, this would be great. But that's a change to be made in 3.4 first, and I'm
> not sure I want to backport it to 3.3.
> 

Thanks for the feedback.

Regarding RPATH, the Fedora packaging policy allows its use for internal libraries that are not installed in the system path (the current case).
Further information can be found here: https://fedoraproject.org/wiki/Packaging:Guidelines#Beware_of_Rpath 

/jpo


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