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Fortran/C interfacing (was: [PATCH 1/5] OpenACC 2.0 support for libgomp - OpenACC runtime, NVidia PTX/CUDA plugin (repost))

From: Thomas Schwinge <thomas at codesourcery dot com>
To: Jakub Jelinek <jakub at redhat dot com>, <fortran at gcc dot gnu dot org>, Tobias Burnus <burnus at net-b dot de>
Cc: <gcc-patches at gcc dot gnu dot org>, Julian Brown <julian at codesourcery dot com>
Date: Fri, 14 Nov 2014 16:56:20 +0100
Subject: Fortran/C interfacing (was: [PATCH 1/5] OpenACC 2.0 support for libgomp - OpenACC runtime, NVidia PTX/CUDA plugin (repost))
Authentication-results: sourceware.org; auth=none
References: <20140923191931 dot 2177e60f at octopus> <20141111135323 dot 29e0f27b at octopus> <20141112100626 dot GP5026 at tucnak dot redhat dot com> <20141113232615 dot 4ff373bf at octopus>

Hi!

On Wed, 12 Nov 2014 11:06:26 +0100, Jakub Jelinek <jakub@redhat.com> wrote:
> On Tue, Nov 11, 2014 at 01:53:23PM +0000, Julian Brown wrote:
> > [OpenACC libgomp changes]
> > [openacc.f90, and exporting symbols in libgomp.map]

> > +OACC_2.0 {
> > +  global:
> > +	acc_get_num_devices;
> > +	acc_get_num_devices_h_;
> 
> Somebody recently suggested (for OpenMP) that we just should use
> bind(C) in the Fortran module, it is too late for OpenMP, as we
> have to keep the *_ entrypoints for compatibility anyway, but
> for OpenACC and new OpenMP functions supposedly you could avoid
> exporting all the *_ wrappers and use * directly.

Tobis, as our local expert :-) -- how does that "resonate" with the
discussion (and implementation) about Fortran/C interfacing in
<http://news.gmane.org/find-root.php?message_id=%3C20140818135104.GA8943%40physik.fu-berlin.de%3E>?


GrÃÃe,
 Thomas

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Follow-Ups:
- Re: Fortran/C interfacing
  - From: Tobias Burnus

References:
- [PATCH 1/5] OpenACC 2.0 support for libgomp - OpenACC runtime, NVidia PTX/CUDA plugin (repost)
  - From: Julian Brown
- Re: [PATCH 1/5] OpenACC 2.0 support for libgomp - OpenACC runtime, NVidia PTX/CUDA plugin (repost)
  - From: Jakub Jelinek

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