Re: TBB license change and package rebuilds - openmp issues

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On 09/09/2016 08:24 AM, Jerry James wrote:
> There is no soname bump in this release, but one section of the API
> changed in a backwards-incompatible way.  

If they broke ABI, why wasn't the soname bumped?

> If the suitesparse maintainer does not object, I would also like to
> fix something I noticed in the build logs.  GCC complains about
> unrecognized pragmas.
> - #pragma ivdep: I propose to change all instances of this to #pragma GCC ivdep.
> - #pragma novector: there is no GCC equivalent, so nothing can be done here.
> - #pragma omp ...: I propose to build CHOLMOD with -fopenmp so these
> will be defined and used.

I'm concerned about this last change - if I understand it correctly everything
that link to CHOLMOD will now need to use -fopenmp as well.  I'm not
necessarily opposed to this, but it does have larger ramifications.  I know in
various places libraries will provide both serial and openmp versions.  I
wonder if it's time for Fedora to work out a scheme for this, or perhaps
simply embrace the multi-core age and accept openmp versions as standard.


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Orion Poplawski
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