Re: [PATCH] RISC-V: Adjust stdint.h to stdint-gcc.h for rvv tests

[Richard Biener <richard.guenther@gmail.com>]

> Am 17.05.2023 um 08:55 schrieb Kito Cheng <kito.cheng@sifive.com>:
> 
> RISC-V glibc will require corresponding muilti-lib has built there,
> otherwise will report something like:
> 
>  /usr/include/gnu/stubs.h:11:11: fatal error: gnu/stubs-ilp32d.h: No
> such file or directory
> 
> But actually we only require those fixed length types to compile and
> scan assembly or dump,
> So we don't really have those multilib built, that's the reason we
> workaround this way.
> 
> This way could work even if the multilib build is disabled, and seems
> ARM has same issue around that and just disable those tests:

Then just mimic that or avoid using stdint.h and instead use things like __INT32_TYPE__?

> ---
> # Return 1 if this is an ARM target supporting -mfloat-abi=soft.  Some
> # multilibs may be incompatible with this option.
> 
> proc check_effective_target_arm_soft_ok { } {
>   return [check_no_compiler_messages arm_soft_ok object {
>       #include <stdint.h>
>       int dummy;
>       int main (void) { return 0; }
>       } "-mfloat-abi=soft"]
> }
> 
> # Return 1 if this is an ARM target supporting -mfloat-abi=soft even
> # for linking.  Some multilibs may be incompatible with this option,
> # and some linkers may reject incompatible options.
> 
> proc check_effective_target_arm_soft_ok_link { } {
>   return [check_no_compiler_messages arm_soft_ok_link executable {
>       #include <stdint.h>
>       int dummy;
>       int main (void) { return 0; }
>       } "-mfloat-abi=soft"]
> }
> ---
> 
> 
>> On Wed, May 17, 2023 at 2:25 PM Robin Dapp <rdapp.gcc@gmail.com> wrote:
>> 
>>> Huh, including stdint-gcc.h looks completely wrong.  What's the issue you are
>>> trying to solve?
>> 
>> The way I understood it is that that's a temporary workaround until
>> all multilib et al. (+testsuite) configurations are in place but I
>> haven't checked the details myself.  Eventually this should be done
>> properly so we can include the regular headers.  Kito might want to
>> comment as he dealt with it before.
>> 
>> I used #include <stdlib.h> for all those tests and Andreas Schwab reported:
>> 
>>  /usr/include/gnu/stubs.h:11:11: fatal error: gnu/stubs-ilp32d.h: No such file or directory
>> 
>> Regards
>> Robin