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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Joel,<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">I tried build RTEMS with RSB ARMv8 Toolchain & getting following error:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">checking whether the C compiler works... no<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">configure: error: in `/mnt/FSL/rtems/rtems-git/build/aarch64-rtems4.12/c/raspberrypi2':<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">configure: error: C compiler cannot create executables<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">See `config.log' for more details<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">Could you please provide some info to resolve this error<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">Thanks and With Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> Raghav<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>
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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"> Joel Sherrill [mailto:joel@rtems.org]
<br>
<b>Sent:</b> Monday, February 29, 2016 10:59 PM<br>
<b>To:</b> Raghav Nayak<br>
<b>Cc:</b> Chris Johns; Sebastian Huber; users@rtems.org<br>
<b>Subject:</b> Re: RTEMS ARMv8 Query<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Feb 29, 2016 at 9:54 AM, Raghav Nayak <<a href="mailto:raghav.nayak@nxp.com" target="_blank">raghav.nayak@nxp.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;color:#1F497D">Hi Joel,</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"> </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">After bootstrap if I want to add something for configure do you have any steps?</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"> </span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Normally, I configure something like this in a separate build tree:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">mkdir b<o:p></o:p></p>
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<p class="MsoNormal">cd b<o:p></o:p></p>
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<p class="MsoNormal">../rtems/configure --target=CPU-rtems4.12 --enable-rtemsbsp=XXX --enable-tests=samples --disable-networking<o:p></o:p></p>
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<p class="MsoNormal">make<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">CPU and BSP get replaced appropriately. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">But there is NO aarch64 code in RTEMS right now. If you have a specific board in mind and do a BSP for it,<o:p></o:p></p>
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<p class="MsoNormal">you could use the arm-rtems4.12 tools and treat the CPU core on that BSP as an ARMv7.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">To do anything ARMv8 specific is going to require work somewhere. aarch64 needs a port<o:p></o:p></p>
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<p class="MsoNormal">and a BSP. arm 32-bit armv8 will start with by treating the board as armv7 and possibly<o:p></o:p></p>
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<p class="MsoNormal">adding a multilib variant to gcc to get access to specific instructions that are desirable.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">--joel<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> <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">With Regards
</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"> Raghav</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"> </span><o:p></o:p></p>
<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"> Joel Sherrill [mailto:<a href="mailto:joel@rtems.org" target="_blank">joel@rtems.org</a>]
<br>
<b>Sent:</b> Monday, February 29, 2016 9:14 PM<br>
<b>To:</b> Raghav Nayak<br>
<b>Cc:</b> Chris Johns; Sebastian Huber; <a href="mailto:users@rtems.org" target="_blank">
users@rtems.org</a></span><o:p></o:p></p>
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<b>Subject:</b> Re: RTEMS ARMv8 Query<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 Mon, Feb 29, 2016 at 3:22 AM, Raghav Nayak <<a href="mailto:raghav.nayak@nxp.com" target="_blank">raghav.nayak@nxp.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Hi,<br>
<br>
I could build the armv8 toolchain properly but do I need to do anything else to build RTEMS other than providing the toolchain path<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">There is no 64-bit aarch64 port of RTEMS. One would have to be written.<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">In the mean time, you can run 32-bit ARMv7 code on the same CPU but not take advantage of newer instructions in 32-bit ARMv8 mode.<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;margin-bottom:12.0pt">With Regards<br>
Raghav<br>
<br>
-----Original Message-----<br>
From: users [mailto:<a href="mailto:users-bounces@rtems.org" target="_blank">users-bounces@rtems.org</a>] On Behalf Of Chris Johns<br>
Sent: Saturday, February 27, 2016 9:12 AM<br>
To: <a href="mailto:joel@rtems.org" target="_blank">joel@rtems.org</a>; Sebastian Huber<br>
Cc: <a href="mailto:users@rtems.org" target="_blank">users@rtems.org</a><br>
Subject: Re: RTEMS ARMv8 Query<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On 27/02/2016 7:16 AM, Joel Sherrill wrote:<br>
><br>
> Chris.. hopefully you have time this weekend to do some quick (for<br>
> you) RSB work. :)<br>
><br>
<br>
Yes, I will do this once the next gcc snapshot is made which should be in a day or so.<br>
<br>
> + Jeff Johnston just cut a newlib snapshot which includes two things<br>
> I wanted. So the tools in general need to bump for this.<br>
> + I sent you the two patches for binutils. Hopefully he can use them<br>
> to add the aarch64-rtems and x86_64-rtems targets to the RSB.<br>
<br>
I will add this to rtems-tools.git/tools/4.12.<br>
<br>
Chris<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">_______________________________________________<br>
users mailing list<br>
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<a href="http://lists.rtems.org/mailman/listinfo/users" target="_blank">http://lists.rtems.org/mailman/listinfo/users</a><o:p></o:p></p>
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