On 05/31/2012 07:26 AM, Jeff Squyres wrote:
> On May 31, 2012, at 2:04 AM, livelfs wrote:
>
>> Since 1.4.5 openmpi release, it is no longer possible to build openmpi 
>> binary with rpmbuild --rebuild if system rpm package version is 4.4.x, like 
>> in SLES10, SLES11, RHEL/CentOS 5.x.
>>
>> For instance, on CentOS 5.8 x86_64 with rpm 4.4.2.3-28.el5_8:
>>
>> [root@horizon _tmp]# rpmbuild --rebuild openmpi-1.4.5-1.src.rpm
>> Installing openmpi-1.4.5-1.src.rpm
>> warning: user jsquyres does not exist - using root
>> error: unpacking of archive failed on file 
>> /usr/src/redhat/SPECS/openmpi-1.4.5.spec;4fc65c74: cpio: MD5 sum mismatch
>> error: openmpi-1.4.5-1.src.rpm cannot be installed
>>
>> Apparently this problem is due to lack of support of SHA-256 in rpm 4.4.x
> Mmmm.  I wonder if this corresponds to me upgrading my cluster (where I make 
> the SRPM) from RHEL5 to RHEL6.  I'll bet it does.  :-\
>
> Just curious -- do you know if there's a way I can make an RHEL5-friendly 
> SRPM on my RHEL6 cluster?  I seem to have RPM 4.8.0 on my RHEL6 machines.
>
> Or, better yet, perhaps I should be producing the SRPM on the official OMPI 
> build machine (i.e., where we make our tarballs), which is still back at 
> RHEL4.  I'm not quite sure how it evolved that we make tarballs in tightly 
> controlled conditions, but the SRPM is just made by hand on my cluster (which 
> is subject to upgrades, etc.).  Hrm. :-\
>

Building on RHEL 4 shouldn't have any impact. If anything, it would make
things worse instead of better, but I think that's unlikely. This
problem has to do with changes in RPM itself from RHEL5 to RHEL 6.
Ideally, you should be using Mock to build your RPMs, and build a
separate set of RPMs for RHEL 3,4,5,6,... It's a PITA, I know, but it's
really the best way to build RPMs without any dependency gotchas.

--
Prentice

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