CentOS - May 2007 - Problems running programs compiled unter Centos 5 on Centos 4 machines

I know this is quite a handwaving, stupid question, but I don't know
where else to ask it and maybe somebody here can at least point me
into the right direction, because I'm stuck.

I have a program package that were using here (OpenFOAM for those who
know it). My problem is that when I compile and link this package on
CentOS 5, it won't run on CentOS 4.x-machines but stops with a
floating-point-exception. The funny thing is that my experiments with
strace and gdb indicate that the problems occur during the loading of
an .so (that does not belong to the package). I was able to remove
that so from the build, the program then failed with similar symptoms
at another library.

Has anyone here seen similar behaviour and what would be a possible
solution? (to compile under 5 in such a way that it runs on 4)

My problem is, that moving all machines to CentOS 5 is not possible,
because our cluster-solution (Rocks) is based on 4.

Any hints (how trivial they may appear to you) are most welcome.

Bernhard Gschaider spake the following on 5/10/2007 1:05
PM:
> I know this is quite a handwaving, stupid question, but I don't know
> where else to ask it and maybe somebody here can at least point me
> into the right direction, because I'm stuck.
> 
> I have a program package that were using here (OpenFOAM for those who
> know it). My problem is that when I compile and link this package on
> CentOS 5, it won't run on CentOS 4.x-machines but stops with a
> floating-point-exception. The funny thing is that my experiments with
> strace and gdb indicate that the problems occur during the loading of
> an .so (that does not belong to the package). I was able to remove
> that so from the build, the program then failed with similar symptoms
> at another library.
> 
> Has anyone here seen similar behaviour and what would be a possible
> solution? (to compile under 5 in such a way that it runs on 4)
> 
> My problem is, that moving all machines to CentOS 5 is not possible,
> because our cluster-solution (Rocks) is based on 4.
> 
> Any hints (how trivial they may appear to you) are most welcome.
Compile on 4?


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On 5/10/07, Bernhard Gschaider <bgschaid_lists at ice-sf.at>
wrote:
>
> I know this is quite a handwaving, stupid question, but I don't know
> where else to ask it and maybe somebody here can at least point me
> into the right direction, because I'm stuck.
>
> I have a program package that were using here (OpenFOAM for those who
> know it). My problem is that when I compile and link this package on
> CentOS 5, it won't run on CentOS 4.x-machines but stops with a
> floating-point-exception. The funny thing is that my experiments with
> strace and gdb indicate that the problems occur during the loading of
> an .so (that does not belong to the package). I was able to remove
> that so from the build, the program then failed with similar symptoms
> at another library.
You can't do this as the libraries, glibc, and gcc versions are all
different between centos4 and centos5.
> Has anyone here seen similar behaviour and what would be a possible
> solution? (to compile under 5 in such a way that it runs on 4)
You can only do this if you're building in a chrooted environment with
the c4 libs. You'd have to use a tool like mock to do this.

> Any hints (how trivial they may appear to you) are most welcome.
Doing things like this are getting easier, but I wouldn't call them
'trivial' just yet.


-- 
During times of universal deceit, telling the truth becomes a revolutionary act.
George Orwell