GSoC 2015 - Clang support and Eclipse plugin work

[Charith Eranga]

Hi Asiri,

I did not had enough time to do a sufficient research on the project. So I
thought it would be better to work on this project outside of GSOC. I'm
currently doing my background research on the matter. I really value
assistance I am getting from you and other developers on RTEMS project.

I will let you all know my progress and keep asking related questions on
this thread. :)

Cheers,
Charith.

On Thu, Apr 2, 2015 at 1:40 PM, Asiri Rathnayake <asiri.rathnayake at gmail.com
> wrote:

> Hi Charith,
>
> I see you were unable to submit a proposal. Do you plan to work on this
> still? :)
>
> Best,
>
> - Asiri
>
> On Tue, Mar 24, 2015 at 9:12 PM, Asiri Rathnayake <
> asiri.rathnayake at gmail.com> wrote:
>
>> Hi Gedare, Joel,
>>
>> >> For clang support, I've made start by following the steps of [1]. I
>>> >> also have an industry contact (llvm/clang committer) who's willing to
>>> >> help me on that side of things. One question I have about this is, how
>>> > It would be most helpful if your contact would be willing to sign-up
>>> > in Google Melange as a mentor for RTEMS Project. Please have him/her
>>> > contact me directly for any clarifications.
>>> +1
>>>
>>
>> I've sent a request on Melange. I'm mostly familiar with the llvm backend
>> work, but I think I know (or can find out) enough about Clang to help
>> Charith with his work (if he gets selected, of course).
>>
>> Cheers,
>>
>> - Asiri
>>
>>
>>> >> do we define a success measure for this project? I mean, RTEMS seem to
>>> >> already compile with Clang with some local patches [1], but how do we
>>> > Somewhat true, but I believe there are problems with using clang that
>>> > have to do with the pervasive use of gcc spec files. A pre-requisite
>>> > task may be to get the spec files completely eliminated, which there
>>> > is an ongoing effort to do with the "waf branch" of RTEMS [1ing tghe].
>>> I am suspicious that most of what is in the specs files is obsolete and
>>> already
>>> taken into account inside gcc by our rtems specific tweaks.  GCC spec way
>>> extension is a way to accomplish things that can be done inside GCC but
>>> without modifying GCC source.  The specs use predates us having many
>>> gcc tweaks.
>>>
>>> The short version is that a careful review may significantly reduce them.
>>>
>>> Also I have long had the idea that adding an option for an rtems bsp
>>> to gcc and clang could eliminate some needs also. The -B option is
>>> mostly to set an include and lib path to get the BSP.
>>>
>>> Random core dump of thoughts of unsure value.
>>> > I think it makes the most sense to work from the waf branch and try to
>>> > help push it forward.
>>> +1
>>> >> evaluate whether the resulting binary is in good shape? should I also
>>> >> be thinking of some test-plan as part of the project? Secondly, will
>>> > RTEMS has an extensive test-suite [2], and you should be prepared to
>>> > run it before/after. We have a tool that helps with automation [3].
>>> >
>>> >> it be OK if I fork off clang in github and maintain the patches there?
>>> >>
>>> > Yes, we prefer for gsoc development to be done on github.
>>> >
>>> >> I haven't yet tried out the RTEMS Eclipse plugin (on my TODO list),
>>> >> but I have an interest in learning Eclipse plugin development. I
>>> >> suppose the objectives of this project would be implement as much as
>>> >> possible in the TODO list of [2]?
>>> >>
>>> > Yes, but some of those may be obsolete. Perhaps users will chime in
>>> > about what they would like to see in it.
>>> Agreed. And suggesting Eclipse capabilities that are useful is welcomed.
>>> >> Many thanks for your comments.
>>> >>
>>> >> - Charith
>>> >>
>>> >> PS: "Hello World" exercise attached herewith.
>>> > Confirmed, thanks. Feel free to add yourself to the "Tracking Table"
>>> for 2015.
>>> >
>>> > [1] https://git.rtems.org/amar/waf.git/
>>> > [2] https://git.rtems.org/rtems/tree/testsuites
>>> > [3] https://git.rtems.org/rtems-tools/tree/tester
>>> >
>>> > Gedare
>>> >
>>> >> [1] https://devel.rtems.org/wiki/Projects/CLANG
>>> >> [2] https://devel.rtems.org/wiki/Developer/Eclipse/Information
>>> >> [3] https://devel.rtems.org/wiki/GSoC/GettingStarted
>>> >>
>>> >> _______________________________________________
>>> >> devel mailing list
>>> >> devel at rtems.org
>>> >> http://lists.rtems.org/mailman/listinfo/devel
>>> > _______________________________________________
>>> > devel mailing list
>>> > devel at rtems.org
>>> > http://lists.rtems.org/mailman/listinfo/devel
>>>
>>> --
>>> Joel Sherrill, Ph.D.             Director of Research & Development
>>> joel.sherrill at OARcorp.com        On-Line Applications Research
>>> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>>> Support Available                (256) 722-9985
>>>
>>>
>>> _______________________________________________
>>> devel mailing list
>>> devel at rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>>
>>
>>
>
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