[R-sig-Fedora] Centos / Fedora rpm - issue with openblas

[Tom Callaway]

On 06/16/2014 10:16 AM, Martyn Plummer wrote:
> On Mon, 2014-06-16 at 09:50 -0400, Tom Callaway wrote:
>> On 06/16/2014 09:38 AM, Martyn Plummer wrote:
>>> Something like the previous behaviour could be put in place by adding
>>> the option --enable-BLAS-shlib when R is configured. Then libRblas.so
>>> will be built as before. However, this libRblas will not contain a copy
>>> of the reference blas that comes with R. Instead it will be just be a
>>> stub that redirects BLAS calls to the external BLAS library. (NB You
>>> must also use --enable-R-shlib for this to work, but this is the case
>>> for the Fedora SRPM so not a problem).
>>>
>>> This option gives you the best of both worlds. However, such a change
>>> would have to wait until the next major release of R.
>>
>> I think we'd enable such a change if it were supported in R.
> 
> Sorry I'm not being clear. This option already exists. I just tested it.
> 
> But if you push an update of the R 3.1.0 RPM you might break R packages
> that need blas and which are already installed by users. This also
> applies to future R 3.1.1 since it will use the same personal package
> library (e.g. ~/R/x86_64-redhat-linux-gnu-library/3.1) . Hence my
> suggestion to wait for the next major release of R to make the change.
> 
> However, I might be wrong about that. You certainly can't get rid of
> libRblas if it exists, but you might be able to add a stub libRblas
> without affecting packages that are already installed.

Revisiting this, this seems to work for libRblas, but _not_ for
libRlapack. When we pass:

   --with-lapack --with-blas --enable-BLAS-shlib

It results in a libRlapack.so that is not a shim, but rather, built from
the bundled sources... which is not what we want in Fedora.

Thoughts?

~tom

==
¸.·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º> OSAS @ Red Hat
University Outreach || Fedora Special Projects || Fedora Legal
-------------- next part --------------
A non-text attachment was scrubbed...
Name: tcallawa.vcf
Type: text/x-vcard
Size: 4 bytes
Desc: not available
URL: <https://stat.ethz.ch/pipermail/r-sig-fedora/attachments/20140710/c8029cc1/attachment.vcf>