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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks for trying it out! It is too bad you have to change a generated file to link correctly, but if you get a working build, feel free to post a patch.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-- Johnny<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> desetton@gmail.com [mailto:desetton@gmail.com]
<b>On Behalf Of </b>Débora Setton Sanches<br>
<b>Sent:</b> Monday, July 20, 2015 7:49 AM<br>
<b>To:</b> Peyton, Jonathan L<br>
<b>Cc:</b> openmp-dev@dcs-maillist2.engr.illinois.edu<br>
<b>Subject:</b> Re: [Openmp-dev] Trying to cross-compile the runtime for Android<o:p></o:p></span></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal">Sorry for the delay; here is my update on this issue: I believe the patch that was submitted works... as far as I could tell.<o:p></o:p></p>
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<p class="MsoNormal">I got the runtime to compile, after tweaking a CMake-generated file (build/src/CMakeFiles/omp.dir/link.txt) to link correctly, but I wasn't able to run it, because Android's standard C library (Bionic) is missing some basic functions on
which the runtime depends, such as "catclose".<o:p></o:p></p>
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<p class="MsoNormal">Still trying to figure out where to go from here (using musl (<a href="http://www.musl-libc.org/">http://www.musl-libc.org/</a>) instead of Bionic seems to be an option), so this is what I have so far.<o:p></o:p></p>
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<p class="MsoNormal">--<o:p></o:p></p>
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<p class="MsoNormal">Débora.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Jul 17, 2015 at 1:58 PM, Débora Setton Sanches <<a href="mailto:setton.debora@gmail.com" target="_blank">setton.debora@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi Jonathan,<o:p></o:p></p>
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<p class="MsoNormal">Thanks! I'll test it out and get back to you.<o:p></o:p></p>
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<p class="MsoNormal">--<o:p></o:p></p>
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<p class="MsoNormal">Débora.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Jul 17, 2015 at 1:31 PM, Peyton, Jonathan L <<a href="mailto:jonathan.l.peyton@intel.com" target="_blank">jonathan.l.peyton@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Débora,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I’ve submitted a small patch here:
<a href="http://reviews.llvm.org/D11301" target="_blank">http://reviews.llvm.org/D11301</a> 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.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a name="14e9cf39cfcc109b_14e9cdb29b5f6a30__MailE"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></a><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-- Johnny</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<a href="mailto:desetton@gmail.com" target="_blank">desetton@gmail.com</a> [mailto:<a href="mailto:desetton@gmail.com" target="_blank">desetton@gmail.com</a>]
<b>On Behalf Of </b>Débora Setton Sanches<br>
<b>Sent:</b> Friday, July 17, 2015 6:44 AM<br>
<b>To:</b> Peyton, Jonathan L<br>
<b>Cc:</b> <a href="mailto:openmp-dev@dcs-maillist2.engr.illinois.edu" target="_blank">
openmp-dev@dcs-maillist2.engr.illinois.edu</a><br>
<b>Subject:</b> Re: [Openmp-dev] Trying to cross-compile the runtime for Android</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Thu, Jul 16, 2015 at 10:50 PM, Peyton, Jonathan L <<a href="mailto:jonathan.l.peyton@intel.com" target="_blank">jonathan.l.peyton@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a name="14e9cf39cfcc109b_14e9cdb29b5f6a30_14e99b">> Is it possible to cross-compile the OpenMP runtime for Android (running on armhf)?</a><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">> 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.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I have no idea. You’re the first person to bring it up on this forum
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">. If compiling it for Android is as simple as compiling it for ARM then maybe, but I honestly am
not sure what obstacles exist.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Ha.. This is going to be fun, then. :)<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">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.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">That would be a big help!<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-- Johnny</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<a href="mailto:openmp-dev-bounces@cs.uiuc.edu" target="_blank">openmp-dev-bounces@cs.uiuc.edu</a> [mailto:<a href="mailto:openmp-dev-bounces@cs.uiuc.edu" target="_blank">openmp-dev-bounces@cs.uiuc.edu</a>]
<b>On Behalf Of </b>Débora Setton Sanches<br>
<b>Sent:</b> Thursday, July 16, 2015 8:17 PM<br>
<b>To:</b> <a href="mailto:openmp-dev@dcs-maillist2.engr.illinois.edu" target="_blank">
openmp-dev@dcs-maillist2.engr.illinois.edu</a><br>
<b>Subject:</b> [Openmp-dev] Trying to cross-compile the runtime for Android</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Is it possible to cross-compile the OpenMP runtime for Android (running on armhf)?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">This is what I have so far:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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 <i>could </i>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).<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Any thoughts on what I'm trying to accomplish are welcome -- any thoughts at all :)<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Débora.<o:p></o:p></p>
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