[Openmp-dev] CMAKE_INSTALL_PREFIX vs -fopenmp and clang search library search path

[Carlo Bertolli]

Hi all

About the name of the library, I vote for -lllomp, i.e. lib name
libllomp.a.

There is already a (perhaps unofficially named) LOMP library around (which
can be used as openmp runtime for clang) and this would make some
discussion hard to understand. See references to it here:

http://cscads.rice.edu/workshops/summer-2012/slides/performance-tools/OpenMP-for-exascale-CScADS.pdf
https://www.alcf.anl.gov/files/BlueGeneQ_Optimization.pdf


Thanks

-- Carlo

(Apologies if you see this as a replicated e-mail, I tried answering this
thread from an e-mail address that the mailing list seems not to recognize)


> From: Chandler Carruth <chandlerc at google.com>
> Date: 13 May 2015 at 12:34
> Subject: Re: [cfe-dev] [Openmp-dev] CMAKE_INSTALL_PREFIX vs -fopenmp
> and clang search library search path
> To: David Chisnall <David.Chisnall at cl.cam.ac.uk>, "Peyton, Jonathan L" <
> jonathan.l.peyton at intel.com>
> Cc: "openmp-dev at dcs-maillist2.engr.illinois.edu" <openmp-dev at dcs-
> maillist2.engr.illinois.edu>, cfe-dev <cfe-dev at cs.uiuc.edu>
>

> My suggestion had been 'libllomp' which would be '-lllomp'. But I
> don't really care.
>
> On Wed, May 13, 2015 at 10:32 AM David Chisnall
<David.Chisnall at cl.cam.ac.uk
> > wrote:
> On 13 May 2015, at 17:29, Peyton, Jonathan L <jonathan.l.peyton at intel.com
> > wrote:
> >
> > What name is desirable instead of iomp?  Do we want to link via…
> > -lllvmomp
> > -llvmomp
> > -lclomp
> > -lcomp
> > -lnotintelomp ( just kidding J )
> > … Some other name?  I get the feeling someone outside of Intel
> should make this choice.
>
> [Joining in the bikeshed]
> -llomp seems most consistent (first letter of LLVM + omp, consistent
> with first letter of GNU + omp, first letter of Intel + omp).
>
> David

>
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