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Re: libc versioning question

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On 2/27/2012 9:23 AM, Lusotec wrote:
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> Rainer Weikusat wrote:
>> Lusotec writes:
>>> Cat22 wrote:
>>>> I have a (precompiled) program that requires libc 2.11 but i only
>>>> have libc 2.10. Is it practical or even possible to put the 2.11 files
>>>> in some directory then run the program using the LD_LIBRARY_PATH
>>>> environment variable so it would use the 2.11 versions? I dont think you
>>>> can just upgrade libc and libstdc++ on my system without wreaking havoc
>>>> can you? I do some C programming from time to to time, but I have not
>>>> had to really ever consider the versions of these libs in the past so I
>>>> just dont know what can or cant be done there.
>>>> Thanks
>>>> Cat22
>>>
>>> Upgrading libc 2.10 to libc 2.11 (a minor version upgrade) should not
>>> cause any issues.
>>
>> The problem with this is that the outcome of such an experiment isn't
>> known until after it was conducted and it is not usually reversible.
>
> If Cat22 only points the symlink /lib64/libc.so.6 to the new library, it
> should be easy to reverse. I don't foresee any issues. On the Mandriva
> systems I use and administer, the libcs have been updated many times without
> any issues.
>
> Still, you are right in that problems are not impossible. Upgrade problems
> are one of the reasons why having up-to-date backups is a very good idea.
>
> Regards.
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I do regular backups, learned that the hard way. I probably should 
upgrade, but i have made my little tweaks and so on  for a long time now 
and I am reluctant to lose them on an upgrade. What i suppose i could do 
is install the latest mandriva pp on a new disk and see how it goes. I 
may try the symlink idea, it seems to be an easily reversible option. I 
would still need to get a newer versoin of the binaries tho or compile 
them myself (how big a job is that? not to bad?)
Thanks
Cat22

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libc versioning question Cat22 <cat22@invalid.org> - 2012-02-26 15:51 -0800
  Re: libc versioning question Lusotec <nomail@nomail.not> - 2012-02-27 12:31 +0000
    Re: libc versioning question Rainer Weikusat <rweikusat@mssgmbh.com> - 2012-02-27 16:15 +0000
      Re: libc versioning question Lusotec <nomail@nomail.not> - 2012-02-27 17:23 +0000
        Re: libc versioning question Cat22 <cat22@invalid.org> - 2012-02-28 00:49 -0800
        Re: libc versioning question Richard Kettlewell <rjk@greenend.org.uk> - 2012-02-28 09:24 +0000
        Re: libc versioning question Rainer Weikusat <rweikusat@mssgmbh.com> - 2012-02-28 14:47 +0000
  Re: libc versioning question John Reiser <jreiserfl@comcast.net> - 2012-02-28 08:06 -0800

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