Building RTEMS with Clang?

[Hesham Almatary]

On Tue, Nov 7, 2017 at 10:27 AM, Joel Sherrill <joel at rtems.org> wrote:
>
>
> On Mon, Nov 6, 2017 at 5:23 PM, Hesham Almatary <heshamelmatary at gmail.com>
> wrote:
>>
>> Hi,
>>
>> I've come across this page [1], but it hasn't been updated since 2011.
>> I'm wondering what's the status of Clang project and how feasible it's
>> to build RTEMS with it.
>
>
> That page is status from my attempt to compile RTEMS with clang.
> I got far enough to know that the bsp_specs were a gcc dependent
> issue that had to be addressed and that the bsp_specs were
> assumed to be present by the build system.
>
> Things got a lot better with Gaisler (Daniel H. cc'ed) putting serious
> effort into clang/llvm on the SPARC for RTEMS. They even added
> support for a compact instruction set like the Thumb.
>
> It would be interesting to see how their SPARC work improved
> the situation in general. That has not been evaluated.
>
+1 I managed to get RTEMS/MIPS compiled/run using Clang, but had some
hacks to get around the GCC-dependent bsp_spec hack. Would be great to
see how Daniel/Gaisler fixed this.

> --joel
>
>>
>>
>> [1] https://devel.rtems.org/wiki/Projects/CLANG
>>
>> Cheers,
>> --
>> Hesham
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>
>



-- 
Hesham