[GSoC 2020]: Doubts in building RSB Recipe for EPICS for multiple architectures

[Joel Sherrill]

On Sun, Jul 26, 2020, 7:27 PM Chris Johns <chrisj at rtems.org> wrote:

> On 27/7/20 10:22 am, Joel Sherrill wrote:
> > On Sun, Jul 26, 2020, 7:06 PM Chris Johns <chrisj at rtems.org
> > <mailto:chrisj at rtems.org>> wrote:
> >
> >     On 27/7/20 9:46 am, Joel Sherrill wrote:
> >     > On Fri, Jul 24, 2020 at 8:51 AM Mritunjay Sharma
> >     <mritunjaysharma394 at gmail.com <mailto:mritunjaysharma394 at gmail.com>
> >     > <mailto:mritunjaysharma394 at gmail.com
> >     <mailto:mritunjaysharma394 at gmail.com>>> wrote:
> >     >
> >     >     Hello all,
> >     >
> >     >     To update you all, I have sent the first version of PATCHES
> that
> >     >     implement an RSB recipe for EPICS7 building with RTEMS5 for
> pc-386.
> >     >
> >     >     While the build was successful for pc-386, I have doubts and
> need
> >     >     suggestions on how to make it work across different BSP
> targets.
> >     >     I will request Chris to show me the path and if possible then
> also review
> >     >     the patches.
> >     >
> >     >
> >     > I didn't see anything in the patches that look to be pc specific
> but admit I
> >     > could have missed something.
> >
> >     There is a patch to EPICS for the PC BSP that I cannot find posted
> online
> >     anywhere.
> >
> >     > I would try another couple of BSPs known to work with EPICS
> >     > using the same network stack you used for the PC. Options include:
> >     >
> >     > + powerpc and beatnik or a motorola_powerpc variant
> >     > + arm zynq qemu
> >     > + m68k uc5282
> >     >
> >     > Which network stack did you build against?
> >     >
> >
> >     It currently is the legacy stack. Heinz has changes pending for
> RTEMS 5.
> >
> > Then it should be repeatable for multiple powerpc and m68k bsps. That
> works be
> > the next step past clean up and documentation to me.
> >
> > Then focus on some libbsd bsps.
>
> I am not sure yet as I have not seen what the changes are. We should be
> encouraging libbsd as the primary stack for RTEMS 5 and not the legacy
> stack. I
> would like to remove the legacy stack from the main source tree.
>

I don't disagree. Just reducing the variables for breakage. Build with one
powerpc bsp with legacy stack to verify no bsp specifics snuck in and then
move to libbsd.

--joel

>
> Chris
>
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