Very Computer

by **Jinsong Ouya** » Wed, 09 Dec 1998 04:00:00

I upgraded RedHat 4.2 to RedHat 5.1 on one of our machines. Lots of
programs stop running after that. Most of time, it is because some of the
dynamic library files for 4.2 do not exist any more in 5.2 system.
I know everything should be all right if I can recompile everything. But
it is not always easy to do that. So I like to know if
anyone knows any easy way to make 5.1 backward compatible with 4.2?
Do I have to copy all those 4.2 library files to the 5.2 system which
does not seem to be the right way to do? Thanks a lot.

by **Jeremy Mathe** » Wed, 09 Dec 1998 04:00:00

>I upgraded RedHat 4.2 to RedHat 5.1 on one of our machines. Lots of
>programs stop running after that. Most of time, it is because some of the
>dynamic library files for 4.2 do not exist any more in 5.2 system.
>I know everything should be all right if I can recompile everything. But
>it is not always easy to do that. So I like to know if
>anyone knows any easy way to make 5.1 backward compatible with 4.2?
>Do I have to copy all those 4.2 library files to the 5.2 system which
>does not seem to be the right way to do? Thanks a lot.

First off - this was possibly an unwise thing to do, since RH5
introduced libc6, which is a pretty major change. I think treating
that move as an "upgrade" is a mistake.

However, you can install the libc5 compatibility stuff and then the
old stuff should work. Actually, I thought this would be installed by
default. Is it not?

by **j..** » Wed, 09 Dec 1998 04:00:00

>>I upgraded RedHat 4.2 to RedHat 5.1 on one of our machines. Lots of
>>programs stop running after that. Most of time, it is because some of the
>>dynamic library files for 4.2 do not exist any more in 5.2 system.
>>I know everything should be all right if I can recompile everything. But
>>it is not always easy to do that. So I like to know if
>>anyone knows any easy way to make 5.1 backward compatible with 4.2?
>>Do I have to copy all those 4.2 library files to the 5.2 system which
>>does not seem to be the right way to do? Thanks a lot.

>First off - this was possibly an unwise thing to do, since RH5
>introduced libc6, which is a pretty major change. I think treating
>that move as an "upgrade" is a mistake.

>However, you can install the libc5 compatibility stuff and then the
>old stuff should work. Actually, I thought this would be installed by
>default. Is it not?

Redhat doesn't keep up with their libc5 minor versions.
Although, I would not expect that to be a problem for
things compiled under 4.2. I don't recall experiencing
such problems.

What, specifically broke?

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Very Computer

Redhat backward compatibility

Redhat backward compatibility

Redhat backward compatibility

Redhat backward compatibility