rtems assembler

[suyash singh]

oh I mean

for target which does not exist like "hello" it says "unknown target"
I wrote that as example to say that
sparc-unknown-rtems5 is detected as valid target but not used

On Thu, Apr 30, 2020 at 7:52 PM Joel Sherrill <joel at rtems.org> wrote:

>
>
> On Thu, Apr 30, 2020 at 9:21 AM suyash singh <suyashsingh234 at gmail.com>
> wrote:
>
>> I think it doesn't support sparc backend although it does not give
>> unknown target error.
>>
>> I compiled this c program with
>> export PATH=$HOME/quick-start/rtems/5/bin:"$PATH"
>>  clang -target sparc-unknown-rtems5 test1.c
>>
>> *test1.c*
>> int main(int argc, char **argv) {
>>   int k = 0x7fffffff;
>>   k += argc;
>>   return 0;
>> }
>>
>> same error
>> /usr/bin/as: unrecognized option '-Av8'
>> clang-11: error: assembler command failed with exit code 1
>>
>> If i write
>> clang -target hello test1.c
>> error: unknown target triple 'hello', please use -triple or -arch
>>
>
> You left the target name off.
>
> clang -target sparc-unknown-rtems5 hello test1.c
>
>>
>> So I guess it is detecting sparc but not working with it
>>
>> On Thu, Apr 30, 2020 at 7:07 PM Hesham Almatary <heshamelmatary at gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Thu, 30 Apr 2020 at 14:18, suyash singh <suyashsingh234 at gmail.com>
>>> wrote:
>>>
>>>>
>>>> I am using ubuntu 18.04 terminal
>>>>
>>>> Here's the python script I wrote to find all include files and run
>>>> clang -fsanitize
>>>>
>>>> # run with python3 in terminal
>>>>
>>>> import subprocess
>>>> import os
>>>>
>>>> relativedir="../bsps/sparc/erc32/btimer"
>>>> directory=os.path.join(os.getcwd(),"../")
>>>> file="btimer.c"
>>>> root_dir="ubsan"
>>>>
>>>> arr=['clang','-target','sparc','-
>>>>
>>> target needs to be sparc-unknown-rtems5 to pick up the correct tools.
>>> Does your clang support sparc backend? Can you try to compile and link some
>>> simple C program with it?
>>>
>>>
>>>> fsanitize=undefined',"-I../../../../../../rtems/5/sparc-rtems5/erc32/lib/include","-I../../../../../../rtems/5/sparc-rtems5/include/"]
>>>>
>>>> for path, subdirs, files in os.walk(directory):
>>>>         for subdir in subdirs:
>>>>             if(subdir=="include"):
>>>>                 includepath=os.path.join(path,subdir)
>>>>                 idx=includepath.find("..")
>>>>                 arr.append("-I../../../../"+includepath[idx+3:])
>>>> arr.append(file)
>>>> subprocess.run(arr,cwd=relativedir, stdout=subprocess.PIPE)
>>>> #result=subprocess.run(['./a.out'],cwd=relativedir,
>>>> stdout=subprocess.PIPE)
>>>>
>>>> On Thu, Apr 30, 2020 at 6:44 PM Hesham Almatary <
>>>> heshamelmatary at gmail.com> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Thu, 30 Apr 2020 at 13:51, Joel Sherrill <joel at rtems.org> wrote:
>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, Apr 30, 2020 at 7:34 AM suyash singh <
>>>>>> suyashsingh234 at gmail.com> wrote:
>>>>>>
>>>>>>> Hello,
>>>>>>> I was running clang UBSan on
>>>>>>> bsps/sparc/erc32/btimer/btimer.c
>>>>>>>
>>>>>>> and got error
>>>>>>>
>>>>>>> /usr/bin/as: unrecognized option '-Av8'
>>>>>>> clang-11: error: assembler command failed with exit code 1
>>>>>>>
>>>>>>> I am not sure but is it because clang is using wrong assembler?
>>>>>>>
>>>>>>
>>>>>> I haven't seen anyone run into this in a long time. :)
>>>>>>
>>>>>> In this case, it is likely one of two things:
>>>>>>
>>>>>> + Look at your $PATH. Make sure the RTEMS tools are first.
>>>>>>
>>>>>> + But in your case, I expect that it is because the clang didn't
>>>>>> know (somehow) to put the target name in front of the as.
>>>>>> Did you invoke it for sparc-rtems5? If so, then there is a
>>>>>> path through clang where it isn't looking at the target name.
>>>>>>
>>>>> That’s likely to be the problem. I expect Suyash isn’t cross compiling
>>>>> with clang.
>>>>>
>>>>>
>>>>>> I also double checked the as manual to ensure -Av8 was in
>>>>>> fact a sparc option.
>>>>>>
>>>>>> --joel
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> 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
>>>>>
>>>>> --
>>>>> Hesham
>>>>> _______________________________________________
>>>>> devel mailing list
>>>>> devel at rtems.org
>>>>> http://lists.rtems.org/mailman/listinfo/devel
>>>>
>>>> --
>>> Hesham
>>>
>>
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