[RFC] RTEMS Waf Clang support

[Hesham Almatary]

Sebastian, I modified my patch set to properly add the XLEN option.
This should make it generic enough for other architectures to be built
with Clang/LLVM, but I have only tested RISC-V.
I can git send-email if you want me to.

[1] https://github.com/CTSRD-CHERI/rtems/compare/967b62464bf39602f8b0f2baf57617ad74c3643d...cbe9d2a40fade836667fe2a910b9c2f85866699c

On Mon, 16 Mar 2020 at 13:04, Hesham Almatary <heshamelmatary at gmail.com> wrote:
>
>
>
> On Mon, 16 Mar 2020 at 12:54, Sebastian Huber <sebastian.huber at embedded-brains.de> wrote:
>>
>>
>> On 16/03/2020 13:51, Hesham Almatary wrote:
>>
>> Thanks Sebastian!
>>
>> I tried to follow your instructions for adding this as a new option, but unfortunately, XLEN didn't evaluate for RTEMS-BUILD-CPUKIT-OPTCLANG to use. Here's the diff:
>>
>>> diff --git a/spec/build/cpukit/RTEMS-BUILD-CPUKIT-OPTXLEN.yml b/spec/build/cpukit/RTEMS-BUILD-CPUKIT-OPTXLEN.yml
>>> new file mode 100644
>>> index 0000000000..840a8ecc2c
>>> --- /dev/null
>>> +++ b/spec/build/cpukit/RTEMS-BUILD-CPUKIT-OPTXLEN.yml
>>> @@ -0,0 +1,19 @@
>>> +active: true
>>> +build-type: option
>>> +default: ''
>>> +default-by-variant:
>>> +- value: '64'
>>> +  variants:
>>> +  - riscv/rv64.*
>>> +derived: false
>>> +enabled-by: []
>>> +header: ''
>>> +level: '1.110'
>>> +links: []
>>> +name: XLEN
>>> +normative: true
>>> +order: -1000
>>> +ref: ''
>>> +reviewed: ChapNb5NSPl062d5CnU251RB5J6TljFz_mLkmFdgwVY=
>>> +text: ''
>>> +type: build
>>
>>
>> grepping for XLEN only gets me:
>>>
>>> c4che/spec_build.pickle:133389:ssS'RTEMS-BUILD-CPUKIT-OPTXLEN'
>>> c4che/spec_build.pickle:133433:S'XLEN'
>>> c4che/spec_build.pickle:154984:S'--target=${ARCH}${XLEN}-unknown-rtems${__RTEMS_MAJOR__}'
>>
>>
>> Am I missing something?
>>
>> Did you link the new item to
>>
>> spec/build/cpukit/RTEMS-BUILD-CPUKIT-CPUOPTS.yml
>>
>> ?
>
> That's what I was missing, thanks!
>
> --
> Hesham



-- 
Hesham