[Openmp-dev] Trying to cross-compile the runtime for Android

[Débora Setton Sanches]

Hi Jonathan,

Thanks! I'll test it out and get back to you.

--
Débora.

On Fri, Jul 17, 2015 at 1:31 PM, Peyton, Jonathan L <
jonathan.l.peyton at intel.com> wrote:

>  Débora,
>
>
>
> I’ve submitted a small patch here: http://reviews.llvm.org/D11301 which
> gets rid of the libffi dependency.  It would be great if you could test
> this patch out as well since I have no access to non-x86 architectures.
> Also, because I have no access to non-x86 architectures, the rest of the
> necessary changes for a port to Android would need to come from the
> external community since I have no way of testing this platform.  Good luck
> though.
>
>
>
> -- Johnny
>
>
>
> *From:* desetton at gmail.com [mailto:desetton at gmail.com] *On Behalf Of *Débora
> Setton Sanches
> *Sent:* Friday, July 17, 2015 6:44 AM
> *To:* Peyton, Jonathan L
> *Cc:* openmp-dev at dcs-maillist2.engr.illinois.edu
> *Subject:* Re: [Openmp-dev] Trying to cross-compile the runtime for
> Android
>
>
>
> On Thu, Jul 16, 2015 at 10:50 PM, Peyton, Jonathan L <
> jonathan.l.peyton at intel.com> wrote:
>
>  > Is it possible to cross-compile the OpenMP runtime for Android
> (running on armhf)?
>
> >
>
> > By "is it possible", I mean: has anyone ever done it and could help me
> with an overview of the process? Or, if not, I'm also trying to >figure out
> if it's worth trying at all, or if I'm going to hit a wall somewhere down
> the path that you may already be aware of, but I'm not.
>
>
>
> I have no idea.  You’re the first person to bring it up on this forum J.
> If compiling it for Android is as simple as compiling it for ARM then
> maybe, but I honestly am not sure what obstacles exist.
>
>
>
>  Ha.. This is going to be fun, then. :)
>
>
>
>  The libffi dependency is a relic from the first port of the runtime to
> the arm architecture.  Since then, there has been a contribution by Carlo
> Bertolli from IBM that eliminated this dependency for non-x86
> architectures, but the ARM architecture builds were never changed to use
> it.  I can change this for you since it needs to be done anyways.
>
>
>
>  That would be a big help!
>
>
>
>  -- Johnny
>
>
>
> *From:* openmp-dev-bounces at cs.uiuc.edu [mailto:
> openmp-dev-bounces at cs.uiuc.edu] *On Behalf Of *Débora Setton Sanches
> *Sent:* Thursday, July 16, 2015 8:17 PM
> *To:* openmp-dev at dcs-maillist2.engr.illinois.edu
> *Subject:* [Openmp-dev] Trying to cross-compile the runtime for Android
>
>
>
> Hi,
>
>
>
> Is it possible to cross-compile the OpenMP runtime for Android (running on
> armhf)?
>
>
>
> By "is it possible", I mean: has anyone ever done it and could help me
> with an overview of the process? Or, if not, I'm also trying to figure out
> if it's worth trying at all, or if I'm going to hit a wall somewhere down
> the path that you may already be aware of, but I'm not.
>
>
>
> This is what I have so far:
>
>
>
> I have successfully cross-compiled the RTL for the same hardware but with
> Ubuntu as OS. For that, I used arm-linux-gnueabihf toolchain for Debian (my
> host OS), but I also had to install libffi-dev:armhf, as it's a dependency.
> In the end, it worked great.
>
>
>
> For Android, I was thinking of trying something similar. I already have a
> cross-compiler for Android (the toolchain provided with Android NDK), but
> there is no "libffi-dev:android-eabi" or something like that. I *could *try
> building ffi, but I'm wondering if I won't end up having a lot of similar
> dependencies to build (assuming I get ffi to even build).
>
>
>
> Any thoughts on what I'm trying to accomplish are welcome -- any thoughts
> at all :)
>
>
>
> Thanks.
>
>
>
> --
>
> Débora.
>
>
>
>
>
>
>
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